v0.0.352

.gitea/workflows/Dockerfile_tests

@@ -1,9 +0,0 @@
-FROM golang:latest
-
-RUN apt install -y make curl python3 && go install gotest.tools/gotestsum@latest
-
-COPY . /source
-
-WORKDIR /source
-
-CMD ["make", "test"]

.gitea/workflows/tests.yml

@@ -6,25 +6,50 @@
 name: Build Docker and Deploy
 run-name: Build & Deploy ${{ gitea.ref }} on ${{ gitea.actor }}
 
-on: [push]
+on:
+  push:
+    branches:
+      - '*'
+      - '**'
+
 
 jobs:
   run_tests:
-    name: Run goext test-suite
+    name: Run goext test-suite  
     runs-on: bfb-cicd-latest
     steps:
 
       - name: Check out code
         uses: actions/checkout@v3
 
-      - name: Build test docker
-        id: build_docker
-        run: echo "DOCKER_IMG_ID=$(docker build -q . -f .gitea/workflows/Dockerfile_tests || echo __err_build__)" >> $GITHUB_OUTPUT
+      - name: Setup go
+        uses: actions/setup-go@v4
+        with:
+          go-version-file: '${{ gitea.workspace }}/go.mod'
+
+      - name: Setup packages
+        uses: awalsh128/cache-apt-pkgs-action@latest
+        with:
+          packages: curl python3
+          version: 1.0
+
+      - name: go version
+        run: go version
 
       - name: Run tests
-        run: docker run --rm "${{ steps.build_docker.outputs.DOCKER_IMG_ID }}"
+        run: cd "${{ gitea.workspace }}" && make test
 
-      - name: Cleanup
-        if: always()
-        run: docker image rm "${{ steps.build_docker.outputs.DOCKER_IMG_ID }}"
+      - name: Send failure mail
+        if: failure()
+        uses: dawidd6/action-send-mail@v3
+        with:
+          server_address: smtp.fastmail.com
+          server_port: 465
+          secure: true
+          username: ${{secrets.MAIL_USERNAME}}
+          password: ${{secrets.MAIL_PASSWORD}}
+          subject: Pipeline on '${{ gitea.repository }}' failed
+          to: ${{ steps.commiter_info.outputs.MAIL }}
+          from: Gitea Actions <gitea_actions@blackforestbytes.de>
+          body: "Go to https://gogs.blackforestbytes.com/${{ gitea.repository }}/actions"
 

.idea/golinter.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="GoLinterSettings">
+    <option name="checkGoLinterExe" value="false" />
+  </component>
+</project>

.idea/sqldialects.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="SqlDialectMappings">
+    <file url="file://$PROJECT_DIR$/sq/sq_test.go" dialect="SQLite" />
+  </component>
+</project>

Makefile

@@ -7,5 +7,11 @@ test:
 	which gotestsum || go install gotest.tools/gotestsum@latest
 	gotestsum --format "testname" -- -tags="timetzdata sqlite_fts5 sqlite_foreign_keys" "./..."
 
+test-in-docker:
+	tag="goext_temp_test_image:$(shell uuidgen | tr -d '-')";        \
+	docker build --tag $$tag . -f .gitea/workflows/Dockerfile_tests; \
+	docker run --rm $$tag;                                           \
+	docker rmi $$tag
+
 version:
 	_data/version.sh

README.md

@@ -10,32 +10,34 @@ Potentially needs `export GOPRIVATE="gogs.mikescher.com"`
 
 ### Packages:
 
-| Name         | Maintainer | Description                                                                                                   |
-|--------------|------------|---------------------------------------------------------------------------------------------------------------|
-| langext      | Mike       | General uttility/helper functions, (everything thats missing from go standard library)                        |
-| mathext      | Mike       | Utility/Helper functions for math                                                                             |
-| cryptext     | Mike       | Utility/Helper functions for encryption                                                                       |
-| syncext      | Mike       | Utility/Helper funtions for multi-threading / mutex / channels                                                |
-| dataext      | Mike       | Various useful data structures                                                                                |
-| zipext       | Mike       | Utility for zip/gzip/tar etc                                                                                  |
-| reflectext   | Mike       | Utility for golagn reflection                                                                                 |
-|              |            |                                                                                                               |
-| mongoext     | Mike       | Utility/Helper functions for mongodb                                                                          |
-| cursortoken  | Mike       | MongoDB cursortoken implementation                                                                            |
-|              |            |                                                                                                               |
-| totpext      | Mike       | Implementation of TOTP (2-Factor-Auth)                                                                        |
-| termext      | Mike       | Utilities for terminals (mostly color output)                                                                 |
-| confext      | Mike       | Parses environment configuration into structs                                                                 |
-| cmdext       | Mike       | Runner for external commands/processes                                                                        |
-|              |            |                                                                                                               |
-| sq           | Mike       | Utility functions for sql based databases                                                                     |
-| tst          | Mike       | Utility functions for unit tests                                                                              |
-|              |            |                                                                                                               |
-| rfctime      | Mike       | Classes for time seriallization, with different marshallign method for mongo and json                         |
-| gojson       | Mike       | Same interface for marshalling/unmarshalling as go/json, except with proper serialization of null arrays/maps |
-|              |            |                                                                                                               |
-| bfcodegen    | Mike       | Various codegen tools (run via go generate)                                                                   |
-|              |            |                                                                                                               |
-| rext         | Mike       | Regex Wrapper, wraps regexp with a better interface                                                           |
-| wmo          | Mike       | Mongo Wrapper, wraps mongodb with a better interface                                                          |
-|              |            |                                                                                                               |
+| Name        | Maintainer | Description                                                                                                   |
+|-------------|------------|---------------------------------------------------------------------------------------------------------------|
+| langext     | Mike       | General uttility/helper functions, (everything thats missing from go standard library)                        |
+| mathext     | Mike       | Utility/Helper functions for math                                                                             |
+| cryptext    | Mike       | Utility/Helper functions for encryption                                                                       |
+| syncext     | Mike       | Utility/Helper funtions for multi-threading / mutex / channels                                                |
+| dataext     | Mike       | Various useful data structures                                                                                |
+| zipext      | Mike       | Utility for zip/gzip/tar etc                                                                                  |
+| reflectext  | Mike       | Utility for golang reflection                                                                                 |
+| fsext       | Mike       | Utility for filesytem access                                                                                  |
+|             |            |                                                                                                               |
+| mongoext    | Mike       | Utility/Helper functions for mongodb                                                                          |
+| cursortoken | Mike       | MongoDB cursortoken implementation                                                                            |
+| pagination  | Mike       | Pagination implementation                                                                                     |
+|             |            |                                                                                                               |
+| totpext     | Mike       | Implementation of TOTP (2-Factor-Auth)                                                                        |
+| termext     | Mike       | Utilities for terminals (mostly color output)                                                                 |
+| confext     | Mike       | Parses environment configuration into structs                                                                 |
+| cmdext      | Mike       | Runner for external commands/processes                                                                        |
+|             |            |                                                                                                               |
+| sq          | Mike       | Utility functions for sql based databases                                                                     |
+| tst         | Mike       | Utility functions for unit tests                                                                              |
+|             |            |                                                                                                               |
+| rfctime     | Mike       | Classes for time seriallization, with different marshallign method for mongo and json                         |
+| gojson      | Mike       | Same interface for marshalling/unmarshalling as go/json, except with proper serialization of null arrays/maps |
+|             |            |                                                                                                               |
+| bfcodegen   | Mike       | Various codegen tools (run via go generate)                                                                   |
+|             |            |                                                                                                               |
+| rext        | Mike       | Regex Wrapper, wraps regexp with a better interface                                                           |
+| wmo         | Mike       | Mongo Wrapper, wraps mongodb with a better interface                                                          |
+|             |            |                                                                                                               |

bfcodegen/csid-generate.go

@@ -0,0 +1,182 @@
+package bfcodegen
+
+import (
+	"bytes"
+	_ "embed"
+	"errors"
+	"fmt"
+	"go/format"
+	"gogs.mikescher.com/BlackForestBytes/goext"
+	"gogs.mikescher.com/BlackForestBytes/goext/cryptext"
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"gogs.mikescher.com/BlackForestBytes/goext/rext"
+	"io"
+	"os"
+	"path"
+	"path/filepath"
+	"regexp"
+	"strings"
+	"text/template"
+)
+
+type CSIDDef struct {
+	File         string
+	FileRelative string
+	Name         string
+	Prefix       string
+}
+
+var rexCSIDPackage = rext.W(regexp.MustCompile(`^package\s+(?P<name>[A-Za-z0-9_]+)\s*$`))
+
+var rexCSIDDef = rext.W(regexp.MustCompile(`^\s*type\s+(?P<name>[A-Za-z0-9_]+)\s+string\s*//\s*(@csid:type)\s+\[(?P<prefix>[A-Z0-9]{3})].*$`))
+
+var rexCSIDChecksumConst = rext.W(regexp.MustCompile(`const ChecksumCharsetIDGenerator = "(?P<cs>[A-Za-z0-9_]*)"`))
+
+//go:embed csid-generate.template
+var templateCSIDGenerateText string
+
+func GenerateCharsetIDSpecs(sourceDir string, destFile string) error {
+
+	files, err := os.ReadDir(sourceDir)
+	if err != nil {
+		return err
+	}
+
+	oldChecksum := "N/A"
+	if _, err := os.Stat(destFile); !os.IsNotExist(err) {
+		content, err := os.ReadFile(destFile)
+		if err != nil {
+			return err
+		}
+		if m, ok := rexCSIDChecksumConst.MatchFirst(string(content)); ok {
+			oldChecksum = m.GroupByName("cs").Value()
+		}
+	}
+
+	files = langext.ArrFilter(files, func(v os.DirEntry) bool { return v.Name() != path.Base(destFile) })
+	files = langext.ArrFilter(files, func(v os.DirEntry) bool { return strings.HasSuffix(v.Name(), ".go") })
+	files = langext.ArrFilter(files, func(v os.DirEntry) bool { return !strings.HasSuffix(v.Name(), "_gen.go") })
+	langext.SortBy(files, func(v os.DirEntry) string { return v.Name() })
+
+	newChecksumStr := goext.GoextVersion
+	for _, f := range files {
+		content, err := os.ReadFile(path.Join(sourceDir, f.Name()))
+		if err != nil {
+			return err
+		}
+		newChecksumStr += "\n" + f.Name() + "\t" + cryptext.BytesSha256(content)
+	}
+
+	newChecksum := cryptext.BytesSha256([]byte(newChecksumStr))
+
+	if newChecksum != oldChecksum {
+		fmt.Printf("[CSIDGenerate] Checksum has changed ( %s -> %s ), will generate new file\n\n", oldChecksum, newChecksum)
+	} else {
+		fmt.Printf("[CSIDGenerate] Checksum unchanged ( %s ), nothing to do\n", oldChecksum)
+		return nil
+	}
+
+	allIDs := make([]CSIDDef, 0)
+
+	pkgname := ""
+
+	for _, f := range files {
+		fmt.Printf("========= %s =========\n\n", f.Name())
+		fileIDs, pn, err := processCSIDFile(sourceDir, path.Join(sourceDir, f.Name()))
+		if err != nil {
+			return err
+		}
+
+		fmt.Printf("\n")
+
+		allIDs = append(allIDs, fileIDs...)
+
+		if pn != "" {
+			pkgname = pn
+		}
+	}
+
+	if pkgname == "" {
+		return errors.New("no package name found in any file")
+	}
+
+	fdata, err := format.Source([]byte(fmtCSIDOutput(newChecksum, allIDs, pkgname)))
+	if err != nil {
+		return err
+	}
+
+	err = os.WriteFile(destFile, fdata, 0o755)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func processCSIDFile(basedir string, fn string) ([]CSIDDef, string, error) {
+	file, err := os.Open(fn)
+	if err != nil {
+		return nil, "", err
+	}
+
+	defer func() { _ = file.Close() }()
+
+	bin, err := io.ReadAll(file)
+	if err != nil {
+		return nil, "", err
+	}
+
+	lines := strings.Split(string(bin), "\n")
+
+	ids := make([]CSIDDef, 0)
+
+	pkgname := ""
+
+	for i, line := range lines {
+		if i == 0 && strings.HasPrefix(line, "// Code generated by") {
+			break
+		}
+
+		if match, ok := rexCSIDPackage.MatchFirst(line); i == 0 && ok {
+			pkgname = match.GroupByName("name").Value()
+			continue
+		}
+
+		if match, ok := rexCSIDDef.MatchFirst(line); ok {
+
+			rfp, err := filepath.Rel(basedir, fn)
+			if err != nil {
+				return nil, "", err
+			}
+
+			def := CSIDDef{
+				File:         fn,
+				FileRelative: rfp,
+				Name:         match.GroupByName("name").Value(),
+				Prefix:       match.GroupByName("prefix").Value(),
+			}
+			fmt.Printf("Found ID definition { '%s' }\n", def.Name)
+			ids = append(ids, def)
+		}
+	}
+
+	return ids, pkgname, nil
+}
+
+func fmtCSIDOutput(cs string, ids []CSIDDef, pkgname string) string {
+	templ := template.Must(template.New("csid-generate").Parse(templateCSIDGenerateText))
+
+	buffer := bytes.Buffer{}
+
+	err := templ.Execute(&buffer, langext.H{
+		"PkgName":      pkgname,
+		"Checksum":     cs,
+		"GoextVersion": goext.GoextVersion,
+		"IDs":          ids,
+	})
+	if err != nil {
+		panic(err)
+	}
+
+	return buffer.String()
+}

bfcodegen/csid-generate.template

@@ -0,0 +1,190 @@
+// Code generated by csid-generate.go DO NOT EDIT.
+
+package {{.PkgName}}
+
+import "crypto/rand"
+import "crypto/sha256"
+import "fmt"
+import "github.com/go-playground/validator/v10"
+import "github.com/rs/zerolog/log"
+import "gogs.mikescher.com/BlackForestBytes/goext/exerr"
+import "gogs.mikescher.com/BlackForestBytes/goext/langext"
+import "gogs.mikescher.com/BlackForestBytes/goext/rext"
+import "math/big"
+import "reflect"
+import "regexp"
+import "strings"
+
+const ChecksumCharsetIDGenerator = "{{.Checksum}}" // GoExtVersion: {{.GoextVersion}}
+
+const idlen = 24
+
+const checklen = 1
+
+const idCharset = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
+const idCharsetLen = len(idCharset)
+
+var charSetReverseMap = generateCharsetMap()
+
+const ({{range .IDs}}
+	prefix{{.Name}} = "{{.Prefix}}" {{end}}
+)
+
+var ({{range .IDs}}
+	regex{{.Name}} = generateRegex(prefix{{.Name}}) {{end}}
+)
+
+func generateRegex(prefix string) rext.Regex {
+	return rext.W(regexp.MustCompile(fmt.Sprintf("^%s[%s]{%d}[%s]{%d}$", prefix, idCharset, idlen-len(prefix)-checklen, idCharset, checklen)))
+}
+
+func generateCharsetMap() []int {
+	result := make([]int, 128)
+	for i := 0; i < len(result); i++ {
+		result[i] = -1
+	}
+	for idx, chr := range idCharset {
+		result[int(chr)] = idx
+	}
+	return result
+}
+
+func generateID(prefix string) string {
+	k := ""
+	csMax := big.NewInt(int64(idCharsetLen))
+	checksum := 0
+	for i := 0; i < idlen-len(prefix)-checklen; i++ {
+		v, err := rand.Int(rand.Reader, csMax)
+		if err != nil {
+			panic(err)
+		}
+		v64 := v.Int64()
+		k += string(idCharset[v64])
+		checksum = (checksum + int(v64)) % (idCharsetLen)
+	}
+	checkstr := string(idCharset[checksum%idCharsetLen])
+	return prefix + k + checkstr
+}
+
+func generateIDFromSeed(prefix string, seed string) string {
+	h := sha256.New()
+
+	iddata := ""
+	for len(iddata) < idlen-len(prefix)-checklen {
+		h.Write([]byte(seed))
+		bs := h.Sum(nil)
+		iddata += langext.NewAnyBaseConverter(idCharset).Encode(bs)
+	}
+
+	checksum := 0
+	for i := 0; i < idlen-len(prefix)-checklen; i++ {
+		ichr := int(iddata[i])
+		checksum = (checksum + charSetReverseMap[ichr]) % (idCharsetLen)
+	}
+
+	checkstr := string(idCharset[checksum%idCharsetLen])
+
+	return prefix + iddata[:(idlen-len(prefix)-checklen)] + checkstr
+}
+
+func validateID(prefix string, value string) error {
+	if len(value) != idlen {
+		return exerr.New(exerr.TypeInvalidCSID, "id has the wrong length").Str("value", value).Build()
+	}
+
+	if !strings.HasPrefix(value, prefix) {
+		return exerr.New(exerr.TypeInvalidCSID, "id is missing the correct prefix").Str("value", value).Str("prefix", prefix).Build()
+	}
+
+	checksum := 0
+	for i := len(prefix); i < len(value)-checklen; i++ {
+		ichr := int(value[i])
+		if ichr < 0 || ichr >= len(charSetReverseMap) || charSetReverseMap[ichr] == -1 {
+			return exerr.New(exerr.TypeInvalidCSID, "id contains invalid characters").Str("value", value).Build()
+		}
+		checksum = (checksum + charSetReverseMap[ichr]) % (idCharsetLen)
+	}
+
+	checkstr := string(idCharset[checksum%idCharsetLen])
+
+	if !strings.HasSuffix(value, checkstr) {
+		return exerr.New(exerr.TypeInvalidCSID, "id checkstring is invalid").Str("value", value).Str("checkstr", checkstr).Build()
+	}
+
+	return nil
+}
+
+func getRawData(prefix string, value string) string {
+	if len(value) != idlen {
+		return ""
+	}
+	return value[len(prefix) : idlen-checklen]
+}
+
+func getCheckString(prefix string, value string) string {
+	if len(value) != idlen {
+		return ""
+	}
+	return value[idlen-checklen:]
+}
+
+func ValidateEntityID(vfl validator.FieldLevel) bool {
+	if !vfl.Field().CanInterface() {
+		log.Error().Msgf("Failed to validate EntityID (cannot interface ?!?)")
+		return false
+	}
+
+	ifvalue := vfl.Field().Interface()
+
+	if value1, ok := ifvalue.(EntityID); ok {
+
+		if vfl.Field().Type().Kind() == reflect.Pointer && langext.IsNil(value1) {
+			return true
+		}
+
+		if err := value1.Valid(); err != nil {
+			log.Debug().Msgf("Failed to validate EntityID '%s' (%s)", value1.String(), err.Error())
+			return false
+		} else {
+			return true
+		}
+
+	} else {
+		log.Error().Msgf("Failed to validate EntityID (wrong type: %T)", ifvalue)
+		return false
+	}
+}
+
+{{range .IDs}}
+
+// ================================ {{.Name}} ({{.FileRelative}}) ================================
+
+func New{{.Name}}() {{.Name}} {
+	return {{.Name}}(generateID(prefix{{.Name}}))
+}
+
+func (id {{.Name}}) Valid() error {
+	return validateID(prefix{{.Name}}, string(id))
+}
+
+func (i {{.Name}}) String() string {
+	return string(i)
+}
+
+func (i {{.Name}}) Prefix() string {
+	return prefix{{.Name}}
+}
+
+func (id {{.Name}}) Raw() string {
+	return getRawData(prefix{{.Name}}, string(id))
+}
+
+func (id {{.Name}}) CheckString() string {
+	return getCheckString(prefix{{.Name}}, string(id))
+}
+
+func (id {{.Name}}) Regex() rext.Regex {
+	return regex{{.Name}}
+}
+
+{{end}}

bfcodegen/csid-generate_test.go

@@ -0,0 +1,52 @@
+package bfcodegen
+
+import (
+	_ "embed"
+	"fmt"
+	"gogs.mikescher.com/BlackForestBytes/goext/cmdext"
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"gogs.mikescher.com/BlackForestBytes/goext/tst"
+	"os"
+	"path/filepath"
+	"testing"
+	"time"
+)
+
+//go:embed _test_example_1.tgz
+var CSIDExampleModels1 []byte
+
+func TestGenerateCSIDSpecs(t *testing.T) {
+
+	tmpFile := filepath.Join(t.TempDir(), langext.MustHexUUID()+".tgz")
+
+	tmpDir := filepath.Join(t.TempDir(), langext.MustHexUUID())
+
+	err := os.WriteFile(tmpFile, CSIDExampleModels1, 0o777)
+	tst.AssertNoErr(t, err)
+
+	t.Cleanup(func() { _ = os.Remove(tmpFile) })
+
+	err = os.Mkdir(tmpDir, 0o777)
+	tst.AssertNoErr(t, err)
+
+	t.Cleanup(func() { _ = os.RemoveAll(tmpFile) })
+
+	_, err = cmdext.Runner("tar").Arg("-xvzf").Arg(tmpFile).Arg("-C").Arg(tmpDir).FailOnExitCode().FailOnTimeout().Timeout(time.Minute).Run()
+	tst.AssertNoErr(t, err)
+
+	err = GenerateCharsetIDSpecs(tmpDir, tmpDir+"/csid_gen.go")
+	tst.AssertNoErr(t, err)
+
+	err = GenerateCharsetIDSpecs(tmpDir, tmpDir+"/csid_gen.go")
+	tst.AssertNoErr(t, err)
+
+	fmt.Println()
+	fmt.Println()
+	fmt.Println()
+	fmt.Println("=====================================================================================================")
+	fmt.Println(string(tst.Must(os.ReadFile(tmpDir + "/csid_gen.go"))(t)))
+	fmt.Println("=====================================================================================================")
+	fmt.Println()
+	fmt.Println()
+	fmt.Println()
+}

bfcodegen/enum-generate.go

@@ -1,10 +1,13 @@
 package bfcodegen
 
 import (
+	"bytes"
+	_ "embed"
+	"encoding/json"
 	"errors"
 	"fmt"
+	"go/format"
 	"gogs.mikescher.com/BlackForestBytes/goext"
-	"gogs.mikescher.com/BlackForestBytes/goext/cmdext"
 	"gogs.mikescher.com/BlackForestBytes/goext/cryptext"
 	"gogs.mikescher.com/BlackForestBytes/goext/langext"
 	"gogs.mikescher.com/BlackForestBytes/goext/rext"
@@ -12,15 +15,18 @@ import (
 	"os"
 	"path"
 	"path/filepath"
+	"reflect"
 	"regexp"
 	"strings"
-	"time"
+	"text/template"
 )
 
 type EnumDefVal struct {
 	VarName     string
 	Value       string
 	Description *string
+	Data        *map[string]any
+	RawComment  *string
 }
 
 type EnumDef struct {
@@ -35,16 +41,14 @@ var rexEnumPackage = rext.W(regexp.MustCompile(`^package\s+(?P<name>[A-Za-z0-9_]
 
 var rexEnumDef = rext.W(regexp.MustCompile(`^\s*type\s+(?P<name>[A-Za-z0-9_]+)\s+(?P<type>[A-Za-z0-9_]+)\s*//\s*(@enum:type).*$`))
 
-var rexEnumValueDef = rext.W(regexp.MustCompile(`^\s*(?P<name>[A-Za-z0-9_]+)\s+(?P<type>[A-Za-z0-9_]+)\s*=\s*(?P<value>("[A-Za-z0-9_:]+"|[0-9]+))\s*(//(?P<descr>.*))?.*$`))
+var rexEnumValueDef = rext.W(regexp.MustCompile(`^\s*(?P<name>[A-Za-z0-9_]+)\s+(?P<type>[A-Za-z0-9_]+)\s*=\s*(?P<value>("[A-Za-z0-9_:\s\-.]+"|[0-9]+))\s*(//(?P<comm>.*))?.*$`))
 
 var rexEnumChecksumConst = rext.W(regexp.MustCompile(`const ChecksumEnumGenerator = "(?P<cs>[A-Za-z0-9_]*)"`))
 
-func GenerateEnumSpecs(sourceDir string, destFile string) error {
+//go:embed enum-generate.template
+var templateEnumGenerateText string
 
-	files, err := os.ReadDir(sourceDir)
-	if err != nil {
-		return err
-	}
+func GenerateEnumSpecs(sourceDir string, destFile string) error {
 
 	oldChecksum := "N/A"
 	if _, err := os.Stat(destFile); !os.IsNotExist(err) {
@@ -57,6 +61,30 @@ func GenerateEnumSpecs(sourceDir string, destFile string) error {
 		}
 	}
 
+	gocode, _, changed, err := _generateEnumSpecs(sourceDir, destFile, oldChecksum, true)
+	if err != nil {
+		return err
+	}
+
+	if !changed {
+		return nil
+	}
+
+	err = os.WriteFile(destFile, []byte(gocode), 0o755)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func _generateEnumSpecs(sourceDir string, destFile string, oldChecksum string, gofmt bool) (string, string, bool, error) {
+
+	files, err := os.ReadDir(sourceDir)
+	if err != nil {
+		return "", "", false, err
+	}
+
 	files = langext.ArrFilter(files, func(v os.DirEntry) bool { return v.Name() != path.Base(destFile) })
 	files = langext.ArrFilter(files, func(v os.DirEntry) bool { return strings.HasSuffix(v.Name(), ".go") })
 	files = langext.ArrFilter(files, func(v os.DirEntry) bool { return !strings.HasSuffix(v.Name(), "_gen.go") })
@@ -66,7 +94,7 @@ func GenerateEnumSpecs(sourceDir string, destFile string) error {
 	for _, f := range files {
 		content, err := os.ReadFile(path.Join(sourceDir, f.Name()))
 		if err != nil {
-			return err
+			return "", "", false, err
 		}
 		newChecksumStr += "\n" + f.Name() + "\t" + cryptext.BytesSha256(content)
 	}
@@ -77,7 +105,7 @@ func GenerateEnumSpecs(sourceDir string, destFile string) error {
 		fmt.Printf("[EnumGenerate] Checksum has changed ( %s -> %s ), will generate new file\n\n", oldChecksum, newChecksum)
 	} else {
 		fmt.Printf("[EnumGenerate] Checksum unchanged ( %s ), nothing to do\n", oldChecksum)
-		return nil
+		return "", oldChecksum, false, nil
 	}
 
 	allEnums := make([]EnumDef, 0)
@@ -88,7 +116,7 @@ func GenerateEnumSpecs(sourceDir string, destFile string) error {
 		fmt.Printf("========= %s =========\n\n", f.Name())
 		fileEnums, pn, err := processEnumFile(sourceDir, path.Join(sourceDir, f.Name()))
 		if err != nil {
-			return err
+			return "", "", false, err
 		}
 
 		fmt.Printf("\n")
@@ -101,29 +129,21 @@ func GenerateEnumSpecs(sourceDir string, destFile string) error {
 	}
 
 	if pkgname == "" {
-		return errors.New("no package name found in any file")
+		return "", "", false, errors.New("no package name found in any file")
 	}
 
-	err = os.WriteFile(destFile, []byte(fmtEnumOutput(newChecksum, allEnums, pkgname)), 0o755)
+	rdata := fmtEnumOutput(newChecksum, allEnums, pkgname)
+
+	if !gofmt {
+		return rdata, newChecksum, true, nil
+	}
+
+	fdata, err := format.Source([]byte(rdata))
 	if err != nil {
-		return err
+		return "", "", false, err
 	}
 
-	res, err := cmdext.RunCommand("go", []string{"fmt", destFile}, langext.Ptr(2*time.Second))
-	if err != nil {
-		return err
-	}
-
-	if res.CommandTimedOut {
-		fmt.Println(res.StdCombined)
-		return errors.New("go fmt timed out")
-	}
-	if res.ExitCode != 0 {
-		fmt.Println(res.StdCombined)
-		return errors.New("go fmt did not succeed")
-	}
-
-	return nil
+	return string(fdata), newChecksum, true, nil
 }
 
 func processEnumFile(basedir string, fn string) ([]EnumDef, string, error) {
@@ -175,10 +195,34 @@ func processEnumFile(basedir string, fn string) ([]EnumDef, string, error) {
 
 		if match, ok := rexEnumValueDef.MatchFirst(line); ok {
 			typename := match.GroupByName("type").Value()
+
+			comment := match.GroupByNameOrEmpty("comm").ValueOrNil()
+			var descr *string = nil
+			var data *map[string]any = nil
+			if comment != nil {
+				comment = langext.Ptr(strings.TrimSpace(*comment))
+				if strings.HasPrefix(*comment, "{") {
+					if v, ok := tryParseDataComment(*comment); ok {
+						data = &v
+						if anyDataDescr, ok := v["description"]; ok {
+							if dataDescr, ok := anyDataDescr.(string); ok {
+								descr = &dataDescr
+							}
+						}
+					} else {
+						descr = comment
+					}
+				} else {
+					descr = comment
+				}
+			}
+
 			def := EnumDefVal{
 				VarName:     match.GroupByName("name").Value(),
 				Value:       match.GroupByName("value").Value(),
-				Description: match.GroupByNameOrEmpty("descr").ValueOrNil(),
+				RawComment:  comment,
+				Description: descr,
+				Data:        data,
 			}
 
 			found := false
@@ -203,134 +247,109 @@ func processEnumFile(basedir string, fn string) ([]EnumDef, string, error) {
 	return enums, pkgname, nil
 }
 
-func fmtEnumOutput(cs string, enums []EnumDef, pkgname string) string {
-	str := "// Code generated by enum-generate.go DO NOT EDIT.\n"
-	str += "\n"
-	str += "package " + pkgname + "\n"
-	str += "\n"
+func tryParseDataComment(s string) (map[string]any, bool) {
 
-	str += "import \"gogs.mikescher.com/BlackForestBytes/goext/langext\"" + "\n"
-	str += "import \"gogs.mikescher.com/BlackForestBytes/goext/enums\"" + "\n"
-	str += "\n"
-
-	str += "const ChecksumEnumGenerator = \"" + cs + "\" // GoExtVersion: " + goext.GoextVersion + "\n"
-	str += "\n"
-
-	for _, enumdef := range enums {
-
-		hasDescr := langext.ArrAll(enumdef.Values, func(val EnumDefVal) bool { return val.Description != nil })
-		hasStr := enumdef.Type == "string"
-
-		str += "// ================================ " + enumdef.EnumTypeName + " ================================" + "\n"
-		str += "//" + "\n"
-		str += "// File:       " + enumdef.FileRelative + "\n"
-		str += "// StringEnum: " + langext.Conditional(hasStr, "true", "false") + "\n"
-		str += "// DescrEnum:  " + langext.Conditional(hasDescr, "true", "false") + "\n"
-		str += "//" + "\n"
-		str += "" + "\n"
-
-		str += "var __" + enumdef.EnumTypeName + "Values = []" + enumdef.EnumTypeName + "{" + "\n"
-		for _, v := range enumdef.Values {
-			str += "    " + v.VarName + "," + "\n"
-		}
-		str += "}" + "\n"
-		str += "" + "\n"
-
-		if hasDescr {
-			str += "var __" + enumdef.EnumTypeName + "Descriptions = map[" + enumdef.EnumTypeName + "]string{" + "\n"
-			for _, v := range enumdef.Values {
-				str += "    " + v.VarName + ": \"" + strings.TrimSpace(*v.Description) + "\"," + "\n"
-			}
-			str += "}" + "\n"
-			str += "" + "\n"
-		}
-
-		str += "var __" + enumdef.EnumTypeName + "Varnames = map[" + enumdef.EnumTypeName + "]string{" + "\n"
-		for _, v := range enumdef.Values {
-			str += "    " + v.VarName + ": \"" + v.VarName + "\"," + "\n"
-		}
-		str += "}" + "\n"
-		str += "" + "\n"
-
-		str += "func (e " + enumdef.EnumTypeName + ") Valid() bool {" + "\n"
-		str += "    return langext.InArray(e, __" + enumdef.EnumTypeName + "Values)" + "\n"
-		str += "}" + "\n"
-		str += "" + "\n"
-
-		str += "func (e " + enumdef.EnumTypeName + ") Values() []" + enumdef.EnumTypeName + " {" + "\n"
-		str += "    return __" + enumdef.EnumTypeName + "Values" + "\n"
-		str += "}" + "\n"
-		str += "" + "\n"
-
-		str += "func (e " + enumdef.EnumTypeName + ") ValuesAny() []any {" + "\n"
-		str += "    return langext.ArrCastToAny(__" + enumdef.EnumTypeName + "Values)" + "\n"
-		str += "}" + "\n"
-		str += "" + "\n"
-
-		str += "func (e " + enumdef.EnumTypeName + ") ValuesMeta() []enums.EnumMetaValue {" + "\n"
-		str += "    return " + enumdef.EnumTypeName + "ValuesMeta()"
-		str += "}" + "\n"
-		str += "" + "\n"
-
-		if hasStr {
-			str += "func (e " + enumdef.EnumTypeName + ") String() string {" + "\n"
-			str += "    return string(e)" + "\n"
-			str += "}" + "\n"
-			str += "" + "\n"
-		}
-
-		if hasDescr {
-			str += "func (e " + enumdef.EnumTypeName + ") Description() string {" + "\n"
-			str += "    if d, ok := __" + enumdef.EnumTypeName + "Descriptions[e]; ok {" + "\n"
-			str += "        return d" + "\n"
-			str += "    }" + "\n"
-			str += "    return \"\"" + "\n"
-			str += "}" + "\n"
-			str += "" + "\n"
-		}
-
-		str += "func (e " + enumdef.EnumTypeName + ") VarName() string {" + "\n"
-		str += "    if d, ok := __" + enumdef.EnumTypeName + "Varnames[e]; ok {" + "\n"
-		str += "        return d" + "\n"
-		str += "    }" + "\n"
-		str += "    return \"\"" + "\n"
-		str += "}" + "\n"
-		str += "" + "\n"
-
-		str += "func (e " + enumdef.EnumTypeName + ") Meta() enums.EnumMetaValue {" + "\n"
-		if hasDescr {
-			str += "    return enums.EnumMetaValue{VarName: e.VarName(), Value: e, Description: langext.Ptr(e.Description())}"
-		} else {
-			str += "    return enums.EnumMetaValue{VarName: e.VarName(), Value: e, Description: nil}"
-		}
-		str += "}" + "\n"
-		str += "" + "\n"
-
-		str += "func Parse" + enumdef.EnumTypeName + "(vv string) (" + enumdef.EnumTypeName + ", bool) {" + "\n"
-		str += "    for _, ev := range __" + enumdef.EnumTypeName + "Values {" + "\n"
-		str += "        if string(ev) == vv {" + "\n"
-		str += "            return ev, true" + "\n"
-		str += "        }" + "\n"
-		str += "    }" + "\n"
-		str += "    return \"\", false" + "\n"
-		str += "}" + "\n"
-		str += "" + "\n"
-
-		str += "func " + enumdef.EnumTypeName + "Values() []" + enumdef.EnumTypeName + " {" + "\n"
-		str += "    return __" + enumdef.EnumTypeName + "Values" + "\n"
-		str += "}" + "\n"
-		str += "" + "\n"
-
-		str += "func " + enumdef.EnumTypeName + "ValuesMeta() []enums.EnumMetaValue {" + "\n"
-		str += "    return []enums.EnumMetaValue{" + "\n"
-		for _, v := range enumdef.Values {
-			str += "        " + v.VarName + ".Meta(),\n"
-		}
-		str += "    }" + "\n"
-		str += "}" + "\n"
-		str += "" + "\n"
+	r := make(map[string]any)
 
+	err := json.Unmarshal([]byte(s), &r)
+	if err != nil {
+		return nil, false
 	}
 
-	return str
+	for _, v := range r {
+
+		rv := reflect.ValueOf(v)
+
+		if rv.Kind() == reflect.Ptr && rv.IsNil() {
+			continue
+		}
+		if rv.Kind() == reflect.Bool {
+			continue
+		}
+		if rv.Kind() == reflect.String {
+			continue
+		}
+		if rv.Kind() == reflect.Int64 {
+			continue
+		}
+		if rv.Kind() == reflect.Float64 {
+			continue
+		}
+
+		return nil, false
+	}
+
+	return r, true
+}
+
+func fmtEnumOutput(cs string, enums []EnumDef, pkgname string) string {
+
+	templ := template.New("enum-generate")
+
+	templ = templ.Funcs(template.FuncMap{
+		"boolToStr": func(b bool) string { return langext.Conditional(b, "true", "false") },
+		"deref":     func(v *string) string { return *v },
+		"trimSpace": func(str string) string { return strings.TrimSpace(str) },
+		"hasStr":    func(v EnumDef) bool { return v.Type == "string" },
+		"hasDescr": func(v EnumDef) bool {
+			return langext.ArrAll(v.Values, func(val EnumDefVal) bool { return val.Description != nil })
+		},
+		"hasData": func(v EnumDef) bool {
+			return len(v.Values) > 0 && langext.ArrAll(v.Values, func(val EnumDefVal) bool { return val.Data != nil })
+		},
+		"gostr": func(v any) string {
+			return fmt.Sprintf("%#+v", v)
+		},
+		"goobj": func(name string, v any) string {
+			return fmt.Sprintf("%#+v", v)
+		},
+		"godatakey": func(v string) string {
+			return strings.ToUpper(v[0:1]) + v[1:]
+		},
+		"godatavalue": func(v any) string {
+			return fmt.Sprintf("%#+v", v)
+		},
+		"godatatype": func(v any) string {
+			return fmt.Sprintf("%T", v)
+		},
+		"mapindex": func(v map[string]any, k string) any {
+			return v[k]
+		},
+		"generalDataKeys": func(v EnumDef) map[string]string {
+			r0 := make(map[string]int)
+
+			for _, eval := range v.Values {
+				for k := range *eval.Data {
+					if ctr, ok := r0[k]; ok {
+						r0[k] = ctr + 1
+					} else {
+						r0[k] = 1
+					}
+				}
+			}
+
+			r1 := langext.MapToArr(r0)
+			r2 := langext.ArrFilter(r1, func(p langext.MapEntry[string, int]) bool { return p.Value == len(v.Values) })
+			r3 := langext.ArrMap(r2, func(p langext.MapEntry[string, int]) string { return p.Key })
+			r4 := langext.ArrToKVMap(r3, func(p string) string { return p }, func(p string) string { return fmt.Sprintf("%T", (*v.Values[0].Data)[p]) })
+
+			return r4
+		},
+	})
+
+	templ = template.Must(templ.Parse(templateEnumGenerateText))
+
+	buffer := bytes.Buffer{}
+
+	err := templ.Execute(&buffer, langext.H{
+		"PkgName":      pkgname,
+		"Checksum":     cs,
+		"GoextVersion": goext.GoextVersion,
+		"Enums":        enums,
+	})
+	if err != nil {
+		panic(err)
+	}
+
+	return buffer.String()
 }

bfcodegen/enum-generate.template

@@ -0,0 +1,137 @@
+// Code generated by enum-generate.go DO NOT EDIT.
+
+package {{.PkgName}}
+
+import "gogs.mikescher.com/BlackForestBytes/goext/langext"
+import "gogs.mikescher.com/BlackForestBytes/goext/enums"
+
+const ChecksumEnumGenerator = "{{.Checksum}}" // GoExtVersion: {{.GoextVersion}}
+
+{{range .Enums}}
+
+{{ $hasStr   := ( . | hasStr   ) }}
+{{ $hasDescr := ( . | hasDescr ) }}
+{{ $hasData  := ( . | hasData  ) }}
+
+// ================================ {{.EnumTypeName}} ================================
+//
+// File:       {{.FileRelative}}
+// StringEnum: {{$hasStr   | boolToStr}}
+// DescrEnum:  {{$hasDescr | boolToStr}}
+// DataEnum:   {{$hasData  | boolToStr}}
+//
+
+{{ $typename := .EnumTypeName }}
+{{ $enumdef  := . }}
+
+var __{{.EnumTypeName}}Values = []{{.EnumTypeName}}{ {{range .Values}}
+	{{.VarName}}, {{end}}
+}
+
+{{if $hasDescr}}
+var __{{.EnumTypeName}}Descriptions = map[{{.EnumTypeName}}]string{ {{range .Values}}
+	{{.VarName}}: {{.Description | deref | trimSpace | gostr}}, {{end}}
+}
+{{end}}
+
+{{if $hasData}}
+type {{ .EnumTypeName }}Data struct { {{ range $datakey, $datatype := ($enumdef | generalDataKeys)  }}
+    {{ $datakey | godatakey }} {{ $datatype }} `json:"{{ $datakey }}"` {{ end }}
+}
+
+var __{{.EnumTypeName}}Data = map[{{.EnumTypeName}}]{{.EnumTypeName}}Data{ {{range .Values}} {{ $enumvalue := . }}
+	{{.VarName}}: {{ $typename }}Data{ {{ range $datakey, $datatype := $enumdef | generalDataKeys  }}
+	    {{ $datakey | godatakey }}: {{ (mapindex $enumvalue.Data $datakey) | godatavalue }}, {{ end }}
+	}, {{end}}
+}
+{{end}}
+
+var __{{.EnumTypeName}}Varnames = map[{{.EnumTypeName}}]string{ {{range .Values}}
+	{{.VarName}}: "{{.VarName}}", {{end}}
+}
+
+func (e {{.EnumTypeName}}) Valid() bool {
+	return langext.InArray(e, __{{.EnumTypeName}}Values)
+}
+
+func (e {{.EnumTypeName}}) Values() []{{.EnumTypeName}} {
+	return __{{.EnumTypeName}}Values
+}
+
+func (e {{.EnumTypeName}}) ValuesAny() []any {
+	return langext.ArrCastToAny(__{{.EnumTypeName}}Values)
+}
+
+func (e {{.EnumTypeName}}) ValuesMeta() []enums.EnumMetaValue {
+	return {{.EnumTypeName}}ValuesMeta()
+}
+
+{{if $hasStr}}
+func (e {{.EnumTypeName}}) String() string {
+	return string(e)
+}
+{{end}}
+
+{{if $hasDescr}}
+func (e {{.EnumTypeName}}) Description() string {
+	if d, ok := __{{.EnumTypeName}}Descriptions[e]; ok {
+		return d
+	}
+	return ""
+}
+{{end}}
+
+{{if $hasData}}
+func (e {{.EnumTypeName}}) Data() {{.EnumTypeName}}Data {
+	if d, ok := __{{.EnumTypeName}}Data[e]; ok {
+		return d
+	}
+	return {{.EnumTypeName}}Data{}
+}
+{{end}}
+
+func (e {{.EnumTypeName}}) VarName() string {
+	if d, ok := __{{.EnumTypeName}}Varnames[e]; ok {
+		return d
+	}
+	return ""
+}
+
+func (e {{.EnumTypeName}}) Meta() enums.EnumMetaValue {
+    {{if $hasDescr}} return enums.EnumMetaValue{VarName: e.VarName(), Value: e, Description: langext.Ptr(e.Description())} {{else}} return enums.EnumMetaValue{VarName: e.VarName(), Value: e, Description: nil} {{end}}
+}
+
+{{if $hasDescr}}
+func (e {{.EnumTypeName}}) DescriptionMeta() enums.EnumDescriptionMetaValue {
+    return enums.EnumDescriptionMetaValue{VarName: e.VarName(), Value: e, Description: e.Description()}
+}
+{{end}}
+
+func Parse{{.EnumTypeName}}(vv string) ({{.EnumTypeName}}, bool) {
+	for _, ev := range __{{.EnumTypeName}}Values {
+		if string(ev) == vv {
+			return ev, true
+		}
+	}
+	return "", false
+}
+
+func {{.EnumTypeName}}Values() []{{.EnumTypeName}} {
+	return __{{.EnumTypeName}}Values
+}
+
+func {{.EnumTypeName}}ValuesMeta() []enums.EnumMetaValue {
+	return []enums.EnumMetaValue{ {{range .Values}}
+            {{.VarName}}.Meta(), {{end}}
+	}
+}
+
+{{if $hasDescr}}
+func {{.EnumTypeName}}ValuesDescriptionMeta() []enums.EnumDescriptionMetaValue {
+	return []enums.EnumDescriptionMetaValue{ {{range .Values}}
+            {{.VarName}}.DescriptionMeta(), {{end}}
+	}
+}
+{{end}}
+
+{{end}}

bfcodegen/enum-generate_test.go

@@ -2,6 +2,7 @@ package bfcodegen
 
 import (
 	_ "embed"
+	"fmt"
 	"gogs.mikescher.com/BlackForestBytes/goext/cmdext"
 	"gogs.mikescher.com/BlackForestBytes/goext/langext"
 	"gogs.mikescher.com/BlackForestBytes/goext/tst"
@@ -11,8 +12,11 @@ import (
 	"time"
 )
 
-//go:embed _test_example.tgz
-var ExampleModels []byte
+//go:embed _test_example_1.tgz
+var EnumExampleModels1 []byte
+
+//go:embed _test_example_2.tgz
+var EnumExampleModels2 []byte
 
 func TestGenerateEnumSpecs(t *testing.T) {
 
@@ -20,7 +24,7 @@ func TestGenerateEnumSpecs(t *testing.T) {
 
 	tmpDir := filepath.Join(t.TempDir(), langext.MustHexUUID())
 
-	err := os.WriteFile(tmpFile, ExampleModels, 0o777)
+	err := os.WriteFile(tmpFile, EnumExampleModels1, 0o777)
 	tst.AssertNoErr(t, err)
 
 	t.Cleanup(func() { _ = os.Remove(tmpFile) })
@@ -33,10 +37,55 @@ func TestGenerateEnumSpecs(t *testing.T) {
 	_, err = cmdext.Runner("tar").Arg("-xvzf").Arg(tmpFile).Arg("-C").Arg(tmpDir).FailOnExitCode().FailOnTimeout().Timeout(time.Minute).Run()
 	tst.AssertNoErr(t, err)
 
-	err = GenerateEnumSpecs(tmpDir, tmpDir+"/enums_gen.go")
+	s1, cs1, _, err := _generateEnumSpecs(tmpDir, "", "N/A", true)
 	tst.AssertNoErr(t, err)
 
-	err = GenerateEnumSpecs(tmpDir, tmpDir+"/enums_gen.go")
+	s2, cs2, _, err := _generateEnumSpecs(tmpDir, "", "N/A", true)
 	tst.AssertNoErr(t, err)
 
+	tst.AssertEqual(t, cs1, cs2)
+	tst.AssertEqual(t, s1, s2)
+
+	fmt.Println()
+	fmt.Println()
+	fmt.Println()
+	fmt.Println("=====================================================================================================")
+	fmt.Println(s1)
+	fmt.Println("=====================================================================================================")
+	fmt.Println()
+	fmt.Println()
+	fmt.Println()
+}
+
+func TestGenerateEnumSpecsData(t *testing.T) {
+
+	tmpFile := filepath.Join(t.TempDir(), langext.MustHexUUID()+".tgz")
+
+	tmpDir := filepath.Join(t.TempDir(), langext.MustHexUUID())
+
+	err := os.WriteFile(tmpFile, EnumExampleModels2, 0o777)
+	tst.AssertNoErr(t, err)
+
+	t.Cleanup(func() { _ = os.Remove(tmpFile) })
+
+	err = os.Mkdir(tmpDir, 0o777)
+	tst.AssertNoErr(t, err)
+
+	t.Cleanup(func() { _ = os.RemoveAll(tmpFile) })
+
+	_, err = cmdext.Runner("tar").Arg("-xvzf").Arg(tmpFile).Arg("-C").Arg(tmpDir).FailOnExitCode().FailOnTimeout().Timeout(time.Minute).Run()
+	tst.AssertNoErr(t, err)
+
+	s1, _, _, err := _generateEnumSpecs(tmpDir, "", "", true)
+	tst.AssertNoErr(t, err)
+
+	fmt.Println()
+	fmt.Println()
+	fmt.Println()
+	fmt.Println("=====================================================================================================")
+	fmt.Println(s1)
+	fmt.Println("=====================================================================================================")
+	fmt.Println()
+	fmt.Println()
+	fmt.Println()
 }

bfcodegen/id-generate.go

@@ -1,10 +1,12 @@
 package bfcodegen
 
 import (
+	"bytes"
+	_ "embed"
 	"errors"
 	"fmt"
+	"go/format"
 	"gogs.mikescher.com/BlackForestBytes/goext"
-	"gogs.mikescher.com/BlackForestBytes/goext/cmdext"
 	"gogs.mikescher.com/BlackForestBytes/goext/cryptext"
 	"gogs.mikescher.com/BlackForestBytes/goext/langext"
 	"gogs.mikescher.com/BlackForestBytes/goext/rext"
@@ -14,7 +16,7 @@ import (
 	"path/filepath"
 	"regexp"
 	"strings"
-	"time"
+	"text/template"
 )
 
 type IDDef struct {
@@ -29,6 +31,9 @@ var rexIDDef = rext.W(regexp.MustCompile(`^\s*type\s+(?P<name>[A-Za-z0-9_]+)\s+s
 
 var rexIDChecksumConst = rext.W(regexp.MustCompile(`const ChecksumIDGenerator = "(?P<cs>[A-Za-z0-9_]*)"`))
 
+//go:embed id-generate.template
+var templateIDGenerateText string
+
 func GenerateIDSpecs(sourceDir string, destFile string) error {
 
 	files, err := os.ReadDir(sourceDir)
@@ -94,25 +99,16 @@ func GenerateIDSpecs(sourceDir string, destFile string) error {
 		return errors.New("no package name found in any file")
 	}
 
-	err = os.WriteFile(destFile, []byte(fmtIDOutput(newChecksum, allIDs, pkgname)), 0o755)
+	fdata, err := format.Source([]byte(fmtIDOutput(newChecksum, allIDs, pkgname)))
 	if err != nil {
 		return err
 	}
 
-	res, err := cmdext.RunCommand("go", []string{"fmt", destFile}, langext.Ptr(2*time.Second))
+	err = os.WriteFile(destFile, fdata, 0o755)
 	if err != nil {
 		return err
 	}
 
-	if res.CommandTimedOut {
-		fmt.Println(res.StdCombined)
-		return errors.New("go fmt timed out")
-	}
-	if res.ExitCode != 0 {
-		fmt.Println(res.StdCombined)
-		return errors.New("go fmt did not succeed")
-	}
-
 	return nil
 }
 
@@ -166,71 +162,22 @@ func processIDFile(basedir string, fn string) ([]IDDef, string, error) {
 }
 
 func fmtIDOutput(cs string, ids []IDDef, pkgname string) string {
-	str := "// Code generated by id-generate.go DO NOT EDIT.\n"
-	str += "\n"
-	str += "package " + pkgname + "\n"
-	str += "\n"
+	templ := template.Must(template.New("id-generate").Parse(templateIDGenerateText))
 
-	str += "import \"go.mongodb.org/mongo-driver/bson\"" + "\n"
-	str += "import \"go.mongodb.org/mongo-driver/bson/bsontype\"" + "\n"
-	str += "import \"go.mongodb.org/mongo-driver/bson/primitive\"" + "\n"
-	str += "import \"gogs.mikescher.com/BlackForestBytes/goext/exerr\"" + "\n"
-	str += "\n"
-
-	str += "const ChecksumIDGenerator = \"" + cs + "\" // GoExtVersion: " + goext.GoextVersion + "\n"
-	str += "\n"
+	buffer := bytes.Buffer{}
 
 	anyDef := langext.ArrFirstOrNil(ids, func(def IDDef) bool { return def.Name == "AnyID" || def.Name == "AnyId" })
 
-	for _, iddef := range ids {
-
-		str += "// ================================ " + iddef.Name + " (" + iddef.FileRelative + ") ================================" + "\n"
-		str += "" + "\n"
-
-		str += "func (i " + iddef.Name + ") MarshalBSONValue() (bsontype.Type, []byte, error) {" + "\n"
-		str += "	if objId, err := primitive.ObjectIDFromHex(string(i)); err == nil {" + "\n"
-		str += "		return bson.MarshalValue(objId)" + "\n"
-		str += "	} else {" + "\n"
-		str += "		return 0, nil, exerr.New(exerr.TypeMarshalEntityID, \"Failed to marshal " + iddef.Name + "(\"+i.String()+\") to ObjectId\").Str(\"value\", string(i)).Type(\"type\", i).Build()" + "\n"
-		str += "	}" + "\n"
-		str += "}" + "\n"
-
-		str += "" + "\n"
-
-		str += "func (i " + iddef.Name + ") String() string {" + "\n"
-		str += "	return string(i)" + "\n"
-		str += "}" + "\n"
-
-		str += "" + "\n"
-
-		str += "func (i " + iddef.Name + ") ObjID() (primitive.ObjectID, error) {" + "\n"
-		str += "	return primitive.ObjectIDFromHex(string(i))" + "\n"
-		str += "}" + "\n"
-
-		str += "" + "\n"
-
-		str += "func (i " + iddef.Name + ") Valid() bool {" + "\n"
-		str += "	_, err := primitive.ObjectIDFromHex(string(i))" + "\n"
-		str += "	return err == nil" + "\n"
-		str += "}" + "\n"
-
-		str += "" + "\n"
-
-		if anyDef != nil {
-			str += "func (i " + iddef.Name + ") AsAny() " + anyDef.Name + " {" + "\n"
-			str += "	return " + anyDef.Name + "(i)" + "\n"
-			str += "}" + "\n"
-
-			str += "" + "\n"
-		}
-
-		str += "func New" + iddef.Name + "() " + iddef.Name + " {" + "\n"
-		str += "	return " + iddef.Name + "(primitive.NewObjectID().Hex())" + "\n"
-		str += "}" + "\n"
-
-		str += "" + "\n"
-
+	err := templ.Execute(&buffer, langext.H{
+		"PkgName":      pkgname,
+		"Checksum":     cs,
+		"GoextVersion": goext.GoextVersion,
+		"IDs":          ids,
+		"AnyDef":       anyDef,
+	})
+	if err != nil {
+		panic(err)
 	}
 
-	return str
+	return buffer.String()
 }

bfcodegen/id-generate.template

@@ -0,0 +1,47 @@
+// Code generated by id-generate.go DO NOT EDIT.
+
+package {{.PkgName}}
+
+import "go.mongodb.org/mongo-driver/bson"
+import "go.mongodb.org/mongo-driver/bson/bsontype"
+import "go.mongodb.org/mongo-driver/bson/primitive"
+import "gogs.mikescher.com/BlackForestBytes/goext/exerr"
+
+const ChecksumIDGenerator = "{{.Checksum}}" // GoExtVersion: {{.GoextVersion}}
+
+{{range .IDs}}
+
+// ================================ {{.Name}} ({{.FileRelative}}) ================================
+
+func (i {{.Name}}) MarshalBSONValue() (bsontype.Type, []byte, error) {
+	if objId, err := primitive.ObjectIDFromHex(string(i)); err == nil {
+		return bson.MarshalValue(objId)
+	} else {
+		return 0, nil, exerr.New(exerr.TypeMarshalEntityID, "Failed to marshal {{.Name}}("+i.String()+") to ObjectId").Str("value", string(i)).Type("type", i).Build()
+	}
+}
+
+func (i {{.Name}}) String() string {
+	return string(i)
+}
+
+func (i {{.Name}}) ObjID() (primitive.ObjectID, error) {
+	return primitive.ObjectIDFromHex(string(i))
+}
+
+func (i {{.Name}}) Valid() bool {
+	_, err := primitive.ObjectIDFromHex(string(i))
+	return err == nil
+}
+
+{{if ne $.AnyDef nil}}
+func (i {{.Name}}) AsAny() {{$.AnyDef.Name}} {
+	return {{$.AnyDef.Name}}(i)
+}
+{{end}}
+
+func New{{.Name}}() {{.Name}} {
+	return {{.Name}}(primitive.NewObjectID().Hex())
+}
+
+{{end}}

bfcodegen/id-generate_test.go

@@ -0,0 +1,52 @@
+package bfcodegen
+
+import (
+	_ "embed"
+	"fmt"
+	"gogs.mikescher.com/BlackForestBytes/goext/cmdext"
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"gogs.mikescher.com/BlackForestBytes/goext/tst"
+	"os"
+	"path/filepath"
+	"testing"
+	"time"
+)
+
+//go:embed _test_example_1.tgz
+var IDExampleModels1 []byte
+
+func TestGenerateIDSpecs(t *testing.T) {
+
+	tmpFile := filepath.Join(t.TempDir(), langext.MustHexUUID()+".tgz")
+
+	tmpDir := filepath.Join(t.TempDir(), langext.MustHexUUID())
+
+	err := os.WriteFile(tmpFile, IDExampleModels1, 0o777)
+	tst.AssertNoErr(t, err)
+
+	t.Cleanup(func() { _ = os.Remove(tmpFile) })
+
+	err = os.Mkdir(tmpDir, 0o777)
+	tst.AssertNoErr(t, err)
+
+	t.Cleanup(func() { _ = os.RemoveAll(tmpFile) })
+
+	_, err = cmdext.Runner("tar").Arg("-xvzf").Arg(tmpFile).Arg("-C").Arg(tmpDir).FailOnExitCode().FailOnTimeout().Timeout(time.Minute).Run()
+	tst.AssertNoErr(t, err)
+
+	err = GenerateIDSpecs(tmpDir, tmpDir+"/id_gen.go")
+	tst.AssertNoErr(t, err)
+
+	err = GenerateIDSpecs(tmpDir, tmpDir+"/id_gen.go")
+	tst.AssertNoErr(t, err)
+
+	fmt.Println()
+	fmt.Println()
+	fmt.Println()
+	fmt.Println("=====================================================================================================")
+	fmt.Println(string(tst.Must(os.ReadFile(tmpDir + "/id_gen.go"))(t)))
+	fmt.Println("=====================================================================================================")
+	fmt.Println()
+	fmt.Println()
+	fmt.Println()
+}

cmdext/cmdrunner.go

@@ -133,9 +133,6 @@ func run(opt CommandRunner) (CommandResult, error) {
 
 	case <-stderrFailChan:
 		_ = cmd.Process.Kill()
-		for _, lstr := range opt.listener {
-			lstr.Timeout()
-		}
 
 		if fallback, ok := syncext.ReadChannelWithTimeout(outputChan, 32*time.Millisecond); ok {
 			// most of the time the cmd.Process.Kill() should also have finished the pipereader
@@ -160,7 +157,8 @@ func run(opt CommandRunner) (CommandResult, error) {
 		}
 
 	case outobj := <-outputChan:
-		if exiterr, ok := outobj.err.(*exec.ExitError); ok {
+		var exiterr *exec.ExitError
+		if errors.As(outobj.err, &exiterr) {
 			excode := exiterr.ExitCode()
 			for _, lstr := range opt.listener {
 				lstr.Finished(excode)

cmdext/pipereader.go

@@ -32,8 +32,8 @@ func (pr *pipeReader) Read(listener []CommandListener) (string, string, string,
 	stdout := ""
 	go func() {
 		buf := make([]byte, 128)
-		for true {
-			n, out := pr.stdout.Read(buf)
+		for {
+			n, err := pr.stdout.Read(buf)
 			if n > 0 {
 				txt := string(buf[:n])
 				stdout += txt
@@ -42,11 +42,11 @@ func (pr *pipeReader) Read(listener []CommandListener) (string, string, string,
 					lstr.ReadRawStdout(buf[:n])
 				}
 			}
-			if out == io.EOF {
+			if err == io.EOF {
 				break
 			}
-			if out != nil {
-				errch <- out
+			if err != nil {
+				errch <- err
 				break
 			}
 		}
@@ -61,7 +61,7 @@ func (pr *pipeReader) Read(listener []CommandListener) (string, string, string,
 	stderr := ""
 	go func() {
 		buf := make([]byte, 128)
-		for true {
+		for {
 			n, err := pr.stderr.Read(buf)
 
 			if n > 0 {

confext/confParser.go

@@ -41,12 +41,12 @@ func processEnvOverrides(rval reflect.Value, delim string, prefix string) error
 			continue
 		}
 
-		if rvfield.Kind() == reflect.Struct {
+		envkey, found := rsfield.Tag.Lookup("env")
+		if !found || envkey == "-" {
+			continue
+		}
 
-			envkey, found := rsfield.Tag.Lookup("env")
-			if !found || envkey == "-" {
-				continue
-			}
+		if rvfield.Kind() == reflect.Struct && rvfield.Type() != reflect.TypeOf(time.UnixMilli(0)) {
 
 			subPrefix := prefix
 			if envkey != "" {
@@ -57,10 +57,7 @@ func processEnvOverrides(rval reflect.Value, delim string, prefix string) error
 			if err != nil {
 				return err
 			}
-		}
 
-		envkey := rsfield.Tag.Get("env")
-		if envkey == "" || envkey == "-" {
 			continue
 		}
 

cryptext/passHash.go

@@ -66,7 +66,6 @@ func (ph PassHash) Data() (_version int, _seed []byte, _payload []byte, _totp bo
 		return int(version), nil, payload, false, nil, true
 	}
 
-	//
 	if version == 2 {
 		if len(split) != 3 {
 			return -1, nil, nil, false, nil, false

cursortoken/filter.go

@@ -4,6 +4,10 @@ import (
 	"go.mongodb.org/mongo-driver/mongo"
 )
 
+type RawFilter interface {
+	FilterQuery() mongo.Pipeline
+}
+
 type Filter interface {
 	FilterQuery() mongo.Pipeline
 	Pagination() (string, SortDirection, string, SortDirection)

enums/enum.go

@@ -15,10 +15,17 @@ type StringEnum interface {
 type DescriptionEnum interface {
 	Enum
 	Description() string
+	DescriptionMeta() EnumDescriptionMetaValue
 }
 
 type EnumMetaValue struct {
 	VarName     string  `json:"varName"`
-	Value       any     `json:"value"`
+	Value       Enum    `json:"value"`
 	Description *string `json:"description"`
 }
+
+type EnumDescriptionMetaValue struct {
+	VarName     string `json:"varName"`
+	Value       Enum   `json:"value"`
+	Description string `json:"description"`
+}

exerr/builder.go

@@ -70,6 +70,7 @@ func init() {
 type Builder struct {
 	errorData       *ExErr
 	containsGinData bool
+	noLog           bool
 }
 
 func Get(err error) *Builder {
@@ -190,6 +191,13 @@ func (b *Builder) System() *Builder {
 
 // ----------------------------------------------------------------------------
 
+func (b *Builder) NoLog() *Builder {
+	b.noLog = true
+	return b
+}
+
+// ----------------------------------------------------------------------------
+
 func (b *Builder) Id(key string, val fmt.Stringer) *Builder {
 	return b.addMeta(key, MDTID, newIDWrap(val))
 }
@@ -275,7 +283,7 @@ func (b *Builder) Any(key string, val any) *Builder {
 }
 
 func (b *Builder) Stringer(key string, val fmt.Stringer) *Builder {
-	if val == nil {
+	if langext.IsNil(val) {
 		return b.addMeta(key, MDTString, "(!nil)")
 	} else {
 		return b.addMeta(key, MDTString, val.String())
@@ -401,12 +409,14 @@ func extractHeader(header map[string][]string) []string {
 
 // Build creates a new error, ready to pass up the stack
 // If the errors is not SevWarn or SevInfo it gets also logged (in short form, without stacktrace) onto stdout
+// Can be gloablly configured with ZeroLogErrTraces and ZeroLogAllTraces
+// Can be locally suppressed with Builder.NoLog()
 func (b *Builder) Build() error {
 	warnOnPkgConfigNotInitialized()
 
-	if pkgconfig.ZeroLogErrTraces && (b.errorData.Severity == SevErr || b.errorData.Severity == SevFatal) {
+	if pkgconfig.ZeroLogErrTraces && !b.noLog && (b.errorData.Severity == SevErr || b.errorData.Severity == SevFatal) {
 		b.errorData.ShortLog(stackSkipLogger.Error())
-	} else if pkgconfig.ZeroLogAllTraces {
+	} else if pkgconfig.ZeroLogAllTraces && !b.noLog {
 		b.errorData.ShortLog(stackSkipLogger.Error())
 	}
 

exerr/data.go

@@ -46,6 +46,7 @@ var (
 	TypeCursorTokenDecode = NewType("CURSOR_TOKEN_DECODE", langext.Ptr(500))
 	TypeMongoFilter       = NewType("MONGO_FILTER", langext.Ptr(500))
 	TypeMongoReflection   = NewType("MONGO_REFLECTION", langext.Ptr(500))
+	TypeMongoInvalidOpt   = NewType("MONGO_INVALIDOPT", langext.Ptr(500))
 
 	TypeWrap = NewType("Wrap", nil)
 
@@ -56,6 +57,10 @@ var (
 	TypeBindFailHeader   = NewType("BINDFAIL_HEADER", langext.Ptr(400))
 
 	TypeMarshalEntityID = NewType("MARSHAL_ENTITY_ID", langext.Ptr(400))
+	TypeInvalidCSID     = NewType("INVALID_CSID", langext.Ptr(400))
+
+	TypeGoogleStatuscode = NewType("GOOGLE_STATUSCODE", langext.Ptr(400))
+	TypeGoogleResponse   = NewType("GOOGLE_RESPONSE", langext.Ptr(400))
 
 	TypeUnauthorized = NewType("UNAUTHORIZED", langext.Ptr(401))
 	TypeAuthFailed   = NewType("AUTH_FAILED", langext.Ptr(401))

exerr/errinit.go

@@ -68,6 +68,10 @@ func Init(cfg ErrorPackageConfigInit) {
 	initialized = true
 }
 
+func Initialized() bool {
+	return initialized
+}
+
 func warnOnPkgConfigNotInitialized() {
 	if !initialized {
 		fmt.Printf("\n")

exerr/exerr.go

@@ -30,7 +30,7 @@ type ExErr struct {
 }
 
 func (ee *ExErr) Error() string {
-	return ee.Message
+	return ee.RecursiveMessage()
 }
 
 // Unwrap must be implemented so that some error.XXX methods work
@@ -164,19 +164,37 @@ func (ee *ExErr) FormatLog(lvl LogPrintLevel) string {
 }
 
 func (ee *ExErr) ShortLog(evt *zerolog.Event) {
-	ee.Meta.Apply(evt).Msg(ee.FormatLog(LogPrintShort))
+	ee.Meta.Apply(evt, langext.Ptr(240)).Msg(ee.FormatLog(LogPrintShort))
 }
 
 // RecursiveMessage returns the message to show
 // = first error (top-down) that is not wrapping/foreign/empty
+// = lowest level error (that is not empty)
+// = fallback to self.message
 func (ee *ExErr) RecursiveMessage() string {
+
+	// ==== [1] ==== first error (top-down) that is not wrapping/foreign/empty
+
 	for curr := ee; curr != nil; curr = curr.OriginalError {
 		if curr.Message != "" && curr.Category != CatWrap && curr.Category != CatForeign {
 			return curr.Message
 		}
 	}
 
-	// fallback to self
+	// ==== [2] ==== lowest level error (that is not empty)
+
+	deepestMsg := ""
+	for curr := ee; curr != nil; curr = curr.OriginalError {
+		if curr.Message != "" {
+			deepestMsg = curr.Message
+		}
+	}
+	if deepestMsg != "" {
+		return deepestMsg
+	}
+
+	// ==== [3] ==== fallback to self.message
+
 	return ee.Message
 }
 

exerr/gin.go

@@ -57,6 +57,19 @@ func (ee *ExErr) toJson(depth int, applyExtendListener bool, outputMeta bool) la
 	return ginJson
 }
 
+func (ee *ExErr) ToDefaultAPIJson() (string, error) {
+
+	gjr := json.GoJsonRender{Data: ee.ToAPIJson(true, pkgconfig.ExtendedGinOutput, pkgconfig.IncludeMetaInGinOutput), NilSafeSlices: true, NilSafeMaps: true}
+
+	r, err := gjr.RenderString()
+
+	if err != nil {
+		return "", err
+	}
+
+	return r, nil
+}
+
 // ToAPIJson converts the ExError to a json object
 // (the same object as used in the Output(gin) method)
 //

exerr/meta.go

@@ -217,23 +217,35 @@ func (v MetaValue) ShortString(lim int) string {
 	return "(err)"
 }
 
-func (v MetaValue) Apply(key string, evt *zerolog.Event) *zerolog.Event {
+func (v MetaValue) Apply(key string, evt *zerolog.Event, limitLen *int) *zerolog.Event {
 	switch v.DataType {
 	case MDTString:
-		return evt.Str(key, v.Value.(string))
+		if limitLen == nil {
+			return evt.Str(key, v.Value.(string))
+		} else {
+			return evt.Str(key, langext.StrLimit(v.Value.(string), *limitLen, "..."))
+		}
 	case MDTID:
 		return evt.Str(key, v.Value.(IDWrap).Value)
 	case MDTAny:
 		if v.Value.(AnyWrap).IsError {
 			return evt.Str(key, "(err)")
 		} else {
-			return evt.Str(key, v.Value.(AnyWrap).Json)
+			if limitLen == nil {
+				return evt.Str(key, v.Value.(AnyWrap).Json)
+			} else {
+				return evt.Str(key, langext.StrLimit(v.Value.(AnyWrap).Json, *limitLen, "..."))
+			}
 		}
 	case MDTStringPtr:
 		if langext.IsNil(v.Value) {
 			return evt.Str(key, "<<null>>")
 		}
-		return evt.Str(key, langext.CoalesceString(v.Value.(*string), "<<null>>"))
+		if limitLen == nil {
+			return evt.Str(key, langext.CoalesceString(v.Value.(*string), "<<null>>"))
+		} else {
+			return evt.Str(key, langext.StrLimit(langext.CoalesceString(v.Value.(*string), "<<null>>"), *limitLen, "..."))
+		}
 	case MDTInt:
 		return evt.Int(key, v.Value.(int))
 	case MDTInt8:
@@ -702,9 +714,9 @@ func (mm MetaMap) Any() bool {
 	return len(mm) > 0
 }
 
-func (mm MetaMap) Apply(evt *zerolog.Event) *zerolog.Event {
+func (mm MetaMap) Apply(evt *zerolog.Event, limitLen *int) *zerolog.Event {
 	for key, val := range mm {
-		evt = val.Apply(key, evt)
+		evt = val.Apply(key, evt, limitLen)
 	}
 	return evt
 }

fsext/exists.go

@@ -0,0 +1,36 @@
+package fsext
+
+import "os"
+
+func PathExists(fp string) (bool, error) {
+	_, err := os.Stat(fp)
+	if err == nil {
+		return true, nil
+	}
+	if os.IsNotExist(err) {
+		return false, nil
+	}
+	return false, err
+}
+
+func FileExists(fp string) (bool, error) {
+	stat, err := os.Stat(fp)
+	if err == nil {
+		return !stat.IsDir(), nil
+	}
+	if os.IsNotExist(err) {
+		return false, nil
+	}
+	return false, err
+}
+
+func DirectoryExists(fp string) (bool, error) {
+	stat, err := os.Stat(fp)
+	if err == nil {
+		return stat.IsDir(), nil
+	}
+	if os.IsNotExist(err) {
+		return false, nil
+	}
+	return false, err
+}

ginext/engine.go

@@ -6,8 +6,10 @@ import (
 	"github.com/rs/zerolog/log"
 	"gogs.mikescher.com/BlackForestBytes/goext/langext"
 	"gogs.mikescher.com/BlackForestBytes/goext/mathext"
+	"gogs.mikescher.com/BlackForestBytes/goext/rext"
 	"net"
 	"net/http"
+	"regexp"
 	"strings"
 	"time"
 )
@@ -16,10 +18,12 @@ type GinWrapper struct {
 	engine          *gin.Engine
 	SuppressGinLogs bool
 
-	allowCors      bool
-	ginDebug       bool
-	bufferBody     bool
-	requestTimeout time.Duration
+	allowCors             bool
+	ginDebug              bool
+	bufferBody            bool
+	requestTimeout        time.Duration
+	listenerBeforeRequest []func(g *gin.Context)
+	listenerAfterRequest  []func(g *gin.Context, resp HTTPResponse)
 
 	routeSpecs []ginRouteSpec
 }
@@ -31,35 +35,41 @@ type ginRouteSpec struct {
 	Handler     string
 }
 
+type Options struct {
+	AllowCors             *bool                                     // Add cors handler to allow all CORS requests on the default http methods
+	GinDebug              *bool                                     // Set gin.debug to true (adds more logs)
+	BufferBody            *bool                                     // Buffers the input body stream, this way the ginext error handler can later include the whole request body
+	Timeout               *time.Duration                            // The default handler timeout
+	ListenerBeforeRequest []func(g *gin.Context)                    // Register listener that are called before the handler method
+	ListenerAfterRequest  []func(g *gin.Context, resp HTTPResponse) // Register listener that are called after the handler method
+}
+
 // NewEngine creates a new (wrapped) ginEngine
-// Parameters are:
-// - [allowCors]    Add cors handler to allow all CORS requests on the default http methods
-// - [ginDebug]     Set gin.debug to true (adds more logs)
-// - [bufferBody]   Buffers the input body stream, this way the ginext error handler can later include the whole request body
-// - [timeout]      The default handler timeout
-func NewEngine(allowCors bool, ginDebug bool, bufferBody bool, timeout time.Duration) *GinWrapper {
+func NewEngine(opt Options) *GinWrapper {
 	engine := gin.New()
 
 	wrapper := &GinWrapper{
-		engine:          engine,
-		SuppressGinLogs: false,
-		allowCors:       allowCors,
-		ginDebug:        ginDebug,
-		bufferBody:      bufferBody,
-		requestTimeout:  timeout,
+		engine:                engine,
+		SuppressGinLogs:       false,
+		allowCors:             langext.Coalesce(opt.AllowCors, false),
+		ginDebug:              langext.Coalesce(opt.GinDebug, true),
+		bufferBody:            langext.Coalesce(opt.BufferBody, false),
+		requestTimeout:        langext.Coalesce(opt.Timeout, 24*time.Hour),
+		listenerBeforeRequest: opt.ListenerBeforeRequest,
+		listenerAfterRequest:  opt.ListenerAfterRequest,
 	}
 
 	engine.RedirectFixedPath = false
 	engine.RedirectTrailingSlash = false
 
-	if allowCors {
+	if wrapper.allowCors {
 		engine.Use(CorsMiddleware())
 	}
 
 	// do not debug-print routes
 	gin.DebugPrintRouteFunc = func(_, _, _ string, _ int) {}
 
-	if ginDebug {
+	if !wrapper.ginDebug {
 		gin.SetMode(gin.ReleaseMode)
 
 		ginlogger := gin.Logger()
@@ -126,8 +136,8 @@ func (w *GinWrapper) DebugPrintRoutes() {
 		line := [4]string{
 			spec.Method,
 			spec.URL,
-			strings.Join(spec.Middlewares, " -> "),
-			spec.Handler,
+			strings.Join(langext.ArrMap(spec.Middlewares, w.cleanMiddlewareName), " -> "),
+			w.cleanMiddlewareName(spec.Handler),
 		}
 
 		lines = append(lines, line)
@@ -138,12 +148,40 @@ func (w *GinWrapper) DebugPrintRoutes() {
 		pad[3] = mathext.Max(pad[3], len(line[3]))
 	}
 
+	fmt.Printf("Gin-Routes:\n")
+	fmt.Printf("{\n")
 	for _, line := range lines {
 
-		fmt.Printf("Gin-Route: %s  %s  -->  %s  -->  %s\n",
+		fmt.Printf(" %s  %s  -->  %s  -->  %s\n",
 			langext.StrPadRight("["+line[0]+"]", " ", pad[0]+2),
 			langext.StrPadRight(line[1], " ", pad[1]),
 			langext.StrPadRight(line[2], " ", pad[2]),
 			langext.StrPadRight(line[3], " ", pad[3]))
 	}
+	fmt.Printf("}\n")
+}
+
+func (w *GinWrapper) cleanMiddlewareName(fname string) string {
+
+	funcSuffix := rext.W(regexp.MustCompile(`\.func[0-9]+(?:\.[0-9]+)*$`))
+	if match, ok := funcSuffix.MatchFirst(fname); ok {
+		fname = fname[:len(fname)-match.FullMatch().Length()]
+	}
+
+	if strings.HasSuffix(fname, ".(*GinRoutesWrapper).WithJSONFilter") {
+		fname = "[JSONFilter]"
+	}
+
+	if fname == "ginext.BodyBuffer" {
+		fname = "[BodyBuffer]"
+	}
+
+	skipPrefixes := []string{"api.(*Handler).", "api.", "ginext.", "handler.", "admin-app.", "employee-app.", "employer-app."}
+	for _, pfx := range skipPrefixes {
+		if strings.HasPrefix(fname, pfx) {
+			fname = fname[len(pfx):]
+		}
+	}
+
+	return fname
 }

ginext/funcWrapper.go

@@ -14,7 +14,17 @@ func Wrap(w *GinWrapper, fn WHandlerFunc) gin.HandlerFunc {
 
 		reqctx := g.Request.Context()
 
-		wrap, stackTrace, panicObj := callPanicSafe(fn, PreContext{wrapper: w, ginCtx: g})
+		pctx := PreContext{
+			wrapper:        w,
+			ginCtx:         g,
+			persistantData: &preContextData{},
+		}
+
+		for _, lstr := range w.listenerBeforeRequest {
+			lstr(g)
+		}
+
+		wrap, stackTrace, panicObj := callPanicSafe(fn, pctx)
 		if panicObj != nil {
 
 			fmt.Printf("\n======== ======== STACKTRACE ======== ========\n%s\n======== ======== ======== ========\n\n", stackTrace)
@@ -32,6 +42,17 @@ func Wrap(w *GinWrapper, fn WHandlerFunc) gin.HandlerFunc {
 			panic("Writing in WrapperFunc is not supported")
 		}
 
+		if pctx.persistantData.sessionObj != nil {
+			err := pctx.persistantData.sessionObj.Finish(reqctx, wrap)
+			if err != nil {
+				wrap = Error(exerr.Wrap(err, "Failed to finish session").Any("originalResponse", wrap).Build())
+			}
+		}
+
+		for _, lstr := range w.listenerAfterRequest {
+			lstr(g, wrap)
+		}
+
 		if reqctx.Err() == nil {
 			wrap.Write(g)
 		}

ginext/preContext.go

@@ -1,25 +1,34 @@
 package ginext
 
 import (
+	"bytes"
 	"context"
 	"fmt"
 	"github.com/gin-gonic/gin"
 	"github.com/gin-gonic/gin/binding"
+	"gogs.mikescher.com/BlackForestBytes/goext/dataext"
 	"gogs.mikescher.com/BlackForestBytes/goext/exerr"
 	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"io"
 	"runtime/debug"
 	"time"
 )
 
 type PreContext struct {
-	ginCtx  *gin.Context
-	wrapper *GinWrapper
-	uri     any
-	query   any
-	body    any
-	form    any
-	header  any
-	timeout *time.Duration
+	ginCtx         *gin.Context
+	wrapper        *GinWrapper
+	uri            any
+	query          any
+	body           any
+	rawbody        *[]byte
+	form           any
+	header         any
+	timeout        *time.Duration
+	persistantData *preContextData // must be a ptr, so that we can get the values back in out Wrap func
+}
+
+type preContextData struct {
+	sessionObj SessionObject
 }
 
 func (pctx *PreContext) URI(uri any) *PreContext {
@@ -37,6 +46,11 @@ func (pctx *PreContext) Body(body any) *PreContext {
 	return pctx
 }
 
+func (pctx *PreContext) RawBody(rawbody *[]byte) *PreContext {
+	pctx.rawbody = rawbody
+	return pctx
+}
+
 func (pctx *PreContext) Form(form any) *PreContext {
 	pctx.form = form
 	return pctx
@@ -52,6 +66,11 @@ func (pctx *PreContext) WithTimeout(to time.Duration) *PreContext {
 	return pctx
 }
 
+func (pctx *PreContext) WithSession(sessionObj SessionObject) *PreContext {
+	pctx.persistantData.sessionObj = sessionObj
+	return pctx
+}
+
 func (pctx PreContext) Start() (*AppContext, *gin.Context, *HTTPResponse) {
 	if pctx.uri != nil {
 		if err := pctx.ginCtx.ShouldBindUri(pctx.uri); err != nil {
@@ -90,6 +109,23 @@ func (pctx PreContext) Start() (*AppContext, *gin.Context, *HTTPResponse) {
 		}
 	}
 
+	if pctx.rawbody != nil {
+		if brc, ok := pctx.ginCtx.Request.Body.(dataext.BufferedReadCloser); ok {
+			v, err := brc.BufferedAll()
+			if err != nil {
+				return nil, nil, langext.Ptr(Error(err))
+			}
+			*pctx.rawbody = v
+		} else {
+			buf := &bytes.Buffer{}
+			_, err := io.Copy(buf, pctx.ginCtx.Request.Body)
+			if err != nil {
+				return nil, nil, langext.Ptr(Error(err))
+			}
+			*pctx.rawbody = buf.Bytes()
+		}
+	}
+
 	if pctx.form != nil {
 		if pctx.ginCtx.ContentType() == "multipart/form-data" {
 			if err := pctx.ginCtx.ShouldBindWith(pctx.form, binding.Form); err != nil {
@@ -126,6 +162,15 @@ func (pctx PreContext) Start() (*AppContext, *gin.Context, *HTTPResponse) {
 	}
 
 	ictx, cancel := context.WithTimeout(context.Background(), langext.Coalesce(pctx.timeout, pctx.wrapper.requestTimeout))
+
+	if pctx.persistantData.sessionObj != nil {
+		err := pctx.persistantData.sessionObj.Init(pctx.ginCtx, ictx)
+		if err != nil {
+			cancel()
+			return nil, nil, langext.Ptr(Error(exerr.Wrap(err, "Failed to init session").Build()))
+		}
+	}
+
 	actx := CreateAppContext(pctx.ginCtx, ictx, cancel)
 
 	return actx, pctx.ginCtx, nil

ginext/response.go

@@ -5,6 +5,8 @@ import (
 	"github.com/gin-gonic/gin"
 	"gogs.mikescher.com/BlackForestBytes/goext/exerr"
 	json "gogs.mikescher.com/BlackForestBytes/goext/gojson"
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"os"
 )
 
 type headerval struct {
@@ -15,6 +17,16 @@ type headerval struct {
 type HTTPResponse interface {
 	Write(g *gin.Context)
 	WithHeader(k string, v string) HTTPResponse
+	IsSuccess() bool
+}
+
+type InspectableHTTPResponse interface {
+	HTTPResponse
+
+	Statuscode() int
+	BodyString(g *gin.Context) *string
+	ContentType() string
+	Headers() []string
 }
 
 type jsonHTTPResponse struct {
@@ -23,11 +35,19 @@ type jsonHTTPResponse struct {
 	headers    []headerval
 }
 
+func (j jsonHTTPResponse) jsonRenderer(g *gin.Context) json.GoJsonRender {
+	var f *string
+	if jsonfilter := g.GetString("goext.jsonfilter"); jsonfilter != "" {
+		f = &jsonfilter
+	}
+	return json.GoJsonRender{Data: j.data, NilSafeSlices: true, NilSafeMaps: true, Filter: f}
+}
+
 func (j jsonHTTPResponse) Write(g *gin.Context) {
 	for _, v := range j.headers {
 		g.Header(v.Key, v.Val)
 	}
-	g.Render(j.statusCode, json.GoJsonRender{Data: j.data, NilSafeSlices: true, NilSafeMaps: true})
+	g.Render(j.statusCode, j.jsonRenderer(g))
 }
 
 func (j jsonHTTPResponse) WithHeader(k string, v string) HTTPResponse {
@@ -35,6 +55,30 @@ func (j jsonHTTPResponse) WithHeader(k string, v string) HTTPResponse {
 	return j
 }
 
+func (j jsonHTTPResponse) IsSuccess() bool {
+	return j.statusCode >= 200 && j.statusCode <= 399
+}
+
+func (j jsonHTTPResponse) Statuscode() int {
+	return j.statusCode
+}
+
+func (j jsonHTTPResponse) BodyString(g *gin.Context) *string {
+	if str, err := j.jsonRenderer(g).RenderString(); err == nil {
+		return &str
+	} else {
+		return nil
+	}
+}
+
+func (j jsonHTTPResponse) ContentType() string {
+	return "application/json"
+}
+
+func (j jsonHTTPResponse) Headers() []string {
+	return langext.ArrMap(j.headers, func(v headerval) string { return v.Key + "=" + v.Val })
+}
+
 type emptyHTTPResponse struct {
 	statusCode int
 	headers    []headerval
@@ -52,6 +96,26 @@ func (j emptyHTTPResponse) WithHeader(k string, v string) HTTPResponse {
 	return j
 }
 
+func (j emptyHTTPResponse) IsSuccess() bool {
+	return j.statusCode >= 200 && j.statusCode <= 399
+}
+
+func (j emptyHTTPResponse) Statuscode() int {
+	return j.statusCode
+}
+
+func (j emptyHTTPResponse) BodyString(*gin.Context) *string {
+	return nil
+}
+
+func (j emptyHTTPResponse) ContentType() string {
+	return ""
+}
+
+func (j emptyHTTPResponse) Headers() []string {
+	return langext.ArrMap(j.headers, func(v headerval) string { return v.Key + "=" + v.Val })
+}
+
 type textHTTPResponse struct {
 	statusCode int
 	data       string
@@ -70,6 +134,26 @@ func (j textHTTPResponse) WithHeader(k string, v string) HTTPResponse {
 	return j
 }
 
+func (j textHTTPResponse) IsSuccess() bool {
+	return j.statusCode >= 200 && j.statusCode <= 399
+}
+
+func (j textHTTPResponse) Statuscode() int {
+	return j.statusCode
+}
+
+func (j textHTTPResponse) BodyString(*gin.Context) *string {
+	return langext.Ptr(j.data)
+}
+
+func (j textHTTPResponse) ContentType() string {
+	return "text/plain"
+}
+
+func (j textHTTPResponse) Headers() []string {
+	return langext.ArrMap(j.headers, func(v headerval) string { return v.Key + "=" + v.Val })
+}
+
 type dataHTTPResponse struct {
 	statusCode  int
 	data        []byte
@@ -89,6 +173,26 @@ func (j dataHTTPResponse) WithHeader(k string, v string) HTTPResponse {
 	return j
 }
 
+func (j dataHTTPResponse) IsSuccess() bool {
+	return j.statusCode >= 200 && j.statusCode <= 399
+}
+
+func (j dataHTTPResponse) Statuscode() int {
+	return j.statusCode
+}
+
+func (j dataHTTPResponse) BodyString(*gin.Context) *string {
+	return langext.Ptr(string(j.data))
+}
+
+func (j dataHTTPResponse) ContentType() string {
+	return j.contentType
+}
+
+func (j dataHTTPResponse) Headers() []string {
+	return langext.ArrMap(j.headers, func(v headerval) string { return v.Key + "=" + v.Val })
+}
+
 type fileHTTPResponse struct {
 	mimetype string
 	filepath string
@@ -113,6 +217,30 @@ func (j fileHTTPResponse) WithHeader(k string, v string) HTTPResponse {
 	return j
 }
 
+func (j fileHTTPResponse) IsSuccess() bool {
+	return true
+}
+
+func (j fileHTTPResponse) Statuscode() int {
+	return 200
+}
+
+func (j fileHTTPResponse) BodyString(*gin.Context) *string {
+	data, err := os.ReadFile(j.filepath)
+	if err != nil {
+		return nil
+	}
+	return langext.Ptr(string(data))
+}
+
+func (j fileHTTPResponse) ContentType() string {
+	return j.mimetype
+}
+
+func (j fileHTTPResponse) Headers() []string {
+	return langext.ArrMap(j.headers, func(v headerval) string { return v.Key + "=" + v.Val })
+}
+
 type downloadDataHTTPResponse struct {
 	statusCode int
 	mimetype   string
@@ -138,6 +266,26 @@ func (j downloadDataHTTPResponse) WithHeader(k string, v string) HTTPResponse {
 	return j
 }
 
+func (j downloadDataHTTPResponse) IsSuccess() bool {
+	return j.statusCode >= 200 && j.statusCode <= 399
+}
+
+func (j downloadDataHTTPResponse) Statuscode() int {
+	return j.statusCode
+}
+
+func (j downloadDataHTTPResponse) BodyString(*gin.Context) *string {
+	return langext.Ptr(string(j.data))
+}
+
+func (j downloadDataHTTPResponse) ContentType() string {
+	return j.mimetype
+}
+
+func (j downloadDataHTTPResponse) Headers() []string {
+	return langext.ArrMap(j.headers, func(v headerval) string { return v.Key + "=" + v.Val })
+}
+
 type redirectHTTPResponse struct {
 	statusCode int
 	url        string
@@ -153,6 +301,26 @@ func (j redirectHTTPResponse) WithHeader(k string, v string) HTTPResponse {
 	return j
 }
 
+func (j redirectHTTPResponse) IsSuccess() bool {
+	return j.statusCode >= 200 && j.statusCode <= 399
+}
+
+func (j redirectHTTPResponse) Statuscode() int {
+	return j.statusCode
+}
+
+func (j redirectHTTPResponse) BodyString(*gin.Context) *string {
+	return nil
+}
+
+func (j redirectHTTPResponse) ContentType() string {
+	return ""
+}
+
+func (j redirectHTTPResponse) Headers() []string {
+	return langext.ArrMap(j.headers, func(v headerval) string { return v.Key + "=" + v.Val })
+}
+
 type jsonAPIErrResponse struct {
 	err     *exerr.ExErr
 	headers []headerval
@@ -167,6 +335,30 @@ func (j jsonAPIErrResponse) WithHeader(k string, v string) HTTPResponse {
 	return j
 }
 
+func (j jsonAPIErrResponse) IsSuccess() bool {
+	return false
+}
+
+func (j jsonAPIErrResponse) Statuscode() int {
+	return langext.Coalesce(j.err.RecursiveStatuscode(), 0)
+}
+
+func (j jsonAPIErrResponse) BodyString(*gin.Context) *string {
+	if str, err := j.err.ToDefaultAPIJson(); err == nil {
+		return &str
+	} else {
+		return nil
+	}
+}
+
+func (j jsonAPIErrResponse) ContentType() string {
+	return "application/json"
+}
+
+func (j jsonAPIErrResponse) Headers() []string {
+	return langext.ArrMap(j.headers, func(v headerval) string { return v.Key + "=" + v.Val })
+}
+
 func Status(sc int) HTTPResponse {
 	return &emptyHTTPResponse{statusCode: sc}
 }

ginext/routes.go

@@ -3,11 +3,9 @@ package ginext
 import (
 	"github.com/gin-gonic/gin"
 	"gogs.mikescher.com/BlackForestBytes/goext/langext"
-	"gogs.mikescher.com/BlackForestBytes/goext/rext"
 	"net/http"
 	"path"
 	"reflect"
-	"regexp"
 	"runtime"
 	"strings"
 )
@@ -58,6 +56,14 @@ func (w *GinRoutesWrapper) Use(middleware ...gin.HandlerFunc) *GinRoutesWrapper
 	return &GinRoutesWrapper{wrapper: w.wrapper, routes: w.routes, defaultHandler: defHandler}
 }
 
+func (w *GinRoutesWrapper) WithJSONFilter(filter string) *GinRoutesWrapper {
+	defHandler := langext.ArrCopy(w.defaultHandler)
+	defHandler = append(defHandler, func(g *gin.Context) {
+		g.Set("goext.jsonfilter", filter)
+	})
+	return &GinRoutesWrapper{wrapper: w.wrapper, routes: w.routes, defaultHandler: defHandler}
+}
+
 func (w *GinRoutesWrapper) GET(relativePath string) *GinRouteBuilder {
 	return w._route(http.MethodGet, relativePath)
 }
@@ -109,6 +115,13 @@ func (w *GinRouteBuilder) Use(middleware ...gin.HandlerFunc) *GinRouteBuilder {
 	return w
 }
 
+func (w *GinRouteBuilder) WithJSONFilter(filter string) *GinRouteBuilder {
+	w.handlers = append(w.handlers, func(g *gin.Context) {
+		g.Set("goext.jsonfilter", filter)
+	})
+	return w
+}
+
 func (w *GinRouteBuilder) Handle(handler WHandlerFunc) {
 
 	if w.routes.wrapper.bufferBody {
@@ -181,12 +194,6 @@ func nameOfFunction(f any) string {
 		fname = fname[:len(fname)-len("-fm")]
 	}
 
-	suffix := rext.W(regexp.MustCompile(`\.func[0-9]+(?:\.[0-9]+)*$`))
-
-	if match, ok := suffix.MatchFirst(fname); ok {
-		fname = fname[:len(fname)-match.FullMatch().Length()]
-	}
-
 	return fname
 }
 

ginext/session.go

@@ -0,0 +1,11 @@
+package ginext
+
+import (
+	"context"
+	"github.com/gin-gonic/gin"
+)
+
+type SessionObject interface {
+	Init(g *gin.Context, ctx context.Context) error
+	Finish(ctx context.Context, resp HTTPResponse) error
+}

go.mod

@@ -1,50 +1,50 @@
 module gogs.mikescher.com/BlackForestBytes/goext
 
-go 1.19
+go 1.21
 
 require (
 	github.com/gin-gonic/gin v1.9.1
 	github.com/jmoiron/sqlx v1.3.5
+	github.com/mattn/go-sqlite3 v1.14.19 // only needed for tests -.-
 	github.com/rs/xid v1.5.0
-	github.com/rs/zerolog v1.30.0
-	go.mongodb.org/mongo-driver v1.12.1
-	golang.org/x/crypto v0.13.0
-	golang.org/x/sys v0.12.0
-	golang.org/x/term v0.12.0
+	github.com/rs/zerolog v1.31.0
+	go.mongodb.org/mongo-driver v1.13.1
+	golang.org/x/crypto v0.17.0
+	golang.org/x/sys v0.15.0
+	golang.org/x/term v0.15.0
 )
 
 require (
-	github.com/bytedance/sonic v1.10.1 // indirect
+	github.com/bytedance/sonic v1.10.2 // indirect
 	github.com/chenzhuoyu/base64x v0.0.0-20230717121745-296ad89f973d // indirect
-	github.com/chenzhuoyu/iasm v0.9.0 // indirect
-	github.com/gabriel-vasile/mimetype v1.4.2 // indirect
+	github.com/chenzhuoyu/iasm v0.9.1 // indirect
+	github.com/gabriel-vasile/mimetype v1.4.3 // indirect
 	github.com/gin-contrib/sse v0.1.0 // indirect
 	github.com/go-playground/locales v0.14.1 // indirect
 	github.com/go-playground/universal-translator v0.18.1 // indirect
-	github.com/go-playground/validator/v10 v10.15.4 // indirect
+	github.com/go-playground/validator/v10 v10.16.0 // indirect
 	github.com/goccy/go-json v0.10.2 // indirect
 	github.com/golang/snappy v0.0.4 // indirect
 	github.com/json-iterator/go v1.1.12 // indirect
-	github.com/klauspost/compress v1.17.0 // indirect
-	github.com/klauspost/cpuid/v2 v2.2.5 // indirect
+	github.com/klauspost/compress v1.17.4 // indirect
+	github.com/klauspost/cpuid/v2 v2.2.6 // indirect
 	github.com/leodido/go-urn v1.2.4 // indirect
 	github.com/mattn/go-colorable v0.1.13 // indirect
-	github.com/mattn/go-isatty v0.0.19 // indirect
+	github.com/mattn/go-isatty v0.0.20 // indirect
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/modern-go/reflect2 v1.0.2 // indirect
 	github.com/montanaflynn/stats v0.7.1 // indirect
-	github.com/pelletier/go-toml/v2 v2.1.0 // indirect
-	github.com/pkg/errors v0.9.1 // indirect
+	github.com/pelletier/go-toml/v2 v2.1.1 // indirect
 	github.com/twitchyliquid64/golang-asm v0.15.1 // indirect
-	github.com/ugorji/go/codec v1.2.11 // indirect
+	github.com/ugorji/go/codec v1.2.12 // indirect
 	github.com/xdg-go/pbkdf2 v1.0.0 // indirect
 	github.com/xdg-go/scram v1.1.2 // indirect
 	github.com/xdg-go/stringprep v1.0.4 // indirect
 	github.com/youmark/pkcs8 v0.0.0-20201027041543-1326539a0a0a // indirect
-	golang.org/x/arch v0.5.0 // indirect
-	golang.org/x/net v0.15.0 // indirect
-	golang.org/x/sync v0.3.0 // indirect
-	golang.org/x/text v0.13.0 // indirect
-	google.golang.org/protobuf v1.31.0 // indirect
+	golang.org/x/arch v0.6.0 // indirect
+	golang.org/x/net v0.19.0 // indirect
+	golang.org/x/sync v0.5.0 // indirect
+	golang.org/x/text v0.14.0 // indirect
+	google.golang.org/protobuf v1.32.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )

go.sum

@@ -1,243 +1,169 @@
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-golang.org/x/text v0.11.0 h1:LAntKIrcmeSKERyiOh0XMV39LXS8IE9UL2yP7+f5ij4=
-golang.org/x/text v0.11.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
-golang.org/x/text v0.12.0 h1:k+n5B8goJNdU7hSvEtMUz3d1Q6D/XW4COJSJR6fN0mc=
-golang.org/x/text v0.12.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
-golang.org/x/text v0.13.0 h1:ablQoSUd0tRdKxZewP80B+BaqeKJuVhuRxj/dkrun3k=
-golang.org/x/text v0.13.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
+golang.org/x/text v0.14.0 h1:ScX5w1eTa3QqT8oi6+ziP7dTV1S2+ALU0bI+0zXKWiQ=
+golang.org/x/text v0.14.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
-google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
-google.golang.org/protobuf v1.31.0 h1:g0LDEJHgrBl9N9r17Ru3sqWhkIx2NB67okBHPwC7hs8=
-google.golang.org/protobuf v1.31.0/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
+google.golang.org/protobuf v1.32.0 h1:pPC6BG5ex8PDFnkbrGU3EixyhKcQ2aDuBS36lqK/C7I=
+google.golang.org/protobuf v1.32.0/go.mod h1:c6P6GXX6sHbq/GpV6MGZEdwhWPcYBgnhAHhKbcUYpos=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

goextVersion.go

@@ -1,5 +1,5 @@
 package goext
 
-const GoextVersion = "0.0.267"
+const GoextVersion = "0.0.352"
 
-const GoextVersionTimestamp = "2023-09-21T14:15:02+0200"
+const GoextVersionTimestamp = "2023-12-29T19:29:36+0100"

gojson/encode.go

@@ -156,7 +156,6 @@ import (
 // an error.
 func Marshal(v any) ([]byte, error) {
 	e := newEncodeState()
-	defer encodeStatePool.Put(e)
 
 	err := e.marshal(v, encOpts{escapeHTML: true})
 	if err != nil {
@@ -164,6 +163,8 @@ func Marshal(v any) ([]byte, error) {
 	}
 	buf := append([]byte(nil), e.Bytes()...)
 
+	encodeStatePool.Put(e)
+
 	return buf, nil
 }
 
@@ -174,9 +175,9 @@ type IndentOpt struct {
 
 // MarshalSafeCollections is like Marshal except it will marshal nil maps and
 // slices as '{}' and '[]' respectfully instead of 'null'
-func MarshalSafeCollections(v interface{}, nilSafeSlices bool, nilSafeMaps bool, indent *IndentOpt) ([]byte, error) {
+func MarshalSafeCollections(v interface{}, nilSafeSlices bool, nilSafeMaps bool, indent *IndentOpt, filter *string) ([]byte, error) {
 	e := &encodeState{}
-	err := e.marshal(v, encOpts{escapeHTML: true, nilSafeSlices: nilSafeSlices, nilSafeMaps: nilSafeMaps})
+	err := e.marshal(v, encOpts{escapeHTML: true, nilSafeSlices: nilSafeSlices, nilSafeMaps: nilSafeMaps, filter: filter})
 	if err != nil {
 		return nil, err
 	}
@@ -393,6 +394,9 @@ type encOpts struct {
 	nilSafeSlices bool
 	// nilSafeMaps marshals a nil maps '{}' instead of 'null'
 	nilSafeMaps bool
+	// filter matches jsonfilter tag of struct
+	// marshals if no jsonfilter is set or otherwise if jsonfilter has the filter value
+	filter *string
 }
 
 type encoderFunc func(e *encodeState, v reflect.Value, opts encOpts)
@@ -777,6 +781,8 @@ FieldLoop:
 
 		if f.omitEmpty && isEmptyValue(fv) {
 			continue
+		} else if opts.filter != nil && len(f.jsonfilter) > 0 && !f.jsonfilter.Contains(*opts.filter) {
+			continue
 		}
 		e.WriteByte(next)
 		next = ','
@@ -1220,15 +1226,28 @@ type field struct {
 	nameNonEsc  string // `"` + name + `":`
 	nameEscHTML string // `"` + HTMLEscape(name) + `":`
 
-	tag       bool
-	index     []int
-	typ       reflect.Type
-	omitEmpty bool
-	quoted    bool
+	tag        bool
+	index      []int
+	typ        reflect.Type
+	omitEmpty  bool
+	jsonfilter jsonfilter
+	quoted     bool
 
 	encoder encoderFunc
 }
 
+// jsonfilter stores the value of the jsonfilter struct tag
+type jsonfilter []string
+
+func (j jsonfilter) Contains(t string) bool {
+	for _, tag := range j {
+		if t == tag {
+			return true
+		}
+	}
+	return false
+}
+
 // byIndex sorts field by index sequence.
 type byIndex []field
 
@@ -1304,6 +1323,13 @@ func typeFields(t reflect.Type) structFields {
 				if !isValidTag(name) {
 					name = ""
 				}
+
+				var jsonfilter []string
+				jsonfilterTag := sf.Tag.Get("jsonfilter")
+				if jsonfilterTag != "" && jsonfilterTag != "-" {
+					jsonfilter = strings.Split(jsonfilterTag, ",")
+				}
+
 				index := make([]int, len(f.index)+1)
 				copy(index, f.index)
 				index[len(f.index)] = i
@@ -1334,12 +1360,13 @@ func typeFields(t reflect.Type) structFields {
 						name = sf.Name
 					}
 					field := field{
-						name:      name,
-						tag:       tagged,
-						index:     index,
-						typ:       ft,
-						omitEmpty: opts.Contains("omitempty"),
-						quoted:    quoted,
+						name:       name,
+						tag:        tagged,
+						index:      index,
+						typ:        ft,
+						omitEmpty:  opts.Contains("omitempty"),
+						jsonfilter: jsonfilter,
+						quoted:     quoted,
 					}
 					field.nameBytes = []byte(field.name)
 					field.equalFold = foldFunc(field.nameBytes)

gojson/encode_test.go

@@ -1253,6 +1253,10 @@ func TestMarshalSafeCollections(t *testing.T) {
 		nilMapStruct struct {
 			NilMap map[string]interface{} `json:"nil_map"`
 		}
+		testWithFilter struct {
+			Test1 string `json:"test1" jsonfilter:"FILTERONE"`
+			Test2 string `json:"test2" jsonfilter:"FILTERTWO"`
+		}
 	)
 
 	tests := []struct {
@@ -1271,10 +1275,12 @@ func TestMarshalSafeCollections(t *testing.T) {
 		{map[string]interface{}{"1": 1, "2": 2, "3": 3}, "{\"1\":1,\"2\":2,\"3\":3}"},
 		{pNilMap, "null"},
 		{nilMapStruct{}, "{\"nil_map\":{}}"},
+		{testWithFilter{}, "{\"test1\":\"\"}"},
 	}
 
+	filter := "FILTERONE"
 	for i, tt := range tests {
-		b, err := MarshalSafeCollections(tt.in, true, true, nil)
+		b, err := MarshalSafeCollections(tt.in, true, true, nil, &filter)
 		if err != nil {
 			t.Errorf("test %d, unexpected failure: %v", i, err)
 		}

gojson/fold.go

@@ -97,7 +97,10 @@ func equalFoldRight(s, t []byte) bool {
 		t = t[size:]
 
 	}
-	return len(t) == 0
+	if len(t) > 0 {
+		return false
+	}
+	return true
 }
 
 // asciiEqualFold is a specialization of bytes.EqualFold for use when

gojson/fold_test.go

@@ -52,7 +52,9 @@ func TestFold(t *testing.T) {
 }
 
 func TestFoldAgainstUnicode(t *testing.T) {
-	var buf1, buf2 []byte
+	const bufSize = 5
+	buf1 := make([]byte, 0, bufSize)
+	buf2 := make([]byte, 0, bufSize)
 	var runes []rune
 	for i := 0x20; i <= 0x7f; i++ {
 		runes = append(runes, rune(i))
@@ -94,8 +96,12 @@ func TestFoldAgainstUnicode(t *testing.T) {
 				continue
 			}
 			for _, r2 := range runes {
-				buf1 = append(utf8.AppendRune(append(buf1[:0], 'x'), r), 'x')
-				buf2 = append(utf8.AppendRune(append(buf2[:0], 'x'), r2), 'x')
+				buf1 := append(buf1[:0], 'x')
+				buf2 := append(buf2[:0], 'x')
+				buf1 = buf1[:1+utf8.EncodeRune(buf1[1:bufSize], r)]
+				buf2 = buf2[:1+utf8.EncodeRune(buf2[1:bufSize], r2)]
+				buf1 = append(buf1, 'x')
+				buf2 = append(buf2, 'x')
 				want := bytes.EqualFold(buf1, buf2)
 				if got := ff.fold(buf1, buf2); got != want {
 					t.Errorf("%s(%q, %q) = %v; want %v", ff.name, buf1, buf2, got, want)

gojson/gionic.go

@@ -17,6 +17,7 @@ type GoJsonRender struct {
 	NilSafeSlices bool
 	NilSafeMaps   bool
 	Indent        *IndentOpt
+	Filter        *string
 }
 
 func (r GoJsonRender) Render(w http.ResponseWriter) error {
@@ -25,7 +26,7 @@ func (r GoJsonRender) Render(w http.ResponseWriter) error {
 		header["Content-Type"] = []string{"application/json; charset=utf-8"}
 	}
 
-	jsonBytes, err := MarshalSafeCollections(r.Data, r.NilSafeSlices, r.NilSafeMaps, r.Indent)
+	jsonBytes, err := MarshalSafeCollections(r.Data, r.NilSafeSlices, r.NilSafeMaps, r.Indent, r.Filter)
 	if err != nil {
 		panic(err)
 	}
@@ -36,6 +37,14 @@ func (r GoJsonRender) Render(w http.ResponseWriter) error {
 	return nil
 }
 
+func (r GoJsonRender) RenderString() (string, error) {
+	jsonBytes, err := MarshalSafeCollections(r.Data, r.NilSafeSlices, r.NilSafeMaps, r.Indent, r.Filter)
+	if err != nil {
+		panic(err)
+	}
+	return string(jsonBytes), nil
+}
+
 func (r GoJsonRender) WriteContentType(w http.ResponseWriter) {
 	header := w.Header()
 	if val := header["Content-Type"]; len(val) == 0 {

gojson/number_test.go

@@ -116,3 +116,18 @@ func TestNumberIsValid(t *testing.T) {
 		}
 	}
 }
+
+func BenchmarkNumberIsValid(b *testing.B) {
+	s := "-61657.61667E+61673"
+	for i := 0; i < b.N; i++ {
+		isValidNumber(s)
+	}
+}
+
+func BenchmarkNumberIsValidRegexp(b *testing.B) {
+	var jsonNumberRegexp = regexp.MustCompile(`^-?(?:0|[1-9]\d*)(?:\.\d+)?(?:[eE][+-]?\d+)?$`)
+	s := "-61657.61667E+61673"
+	for i := 0; i < b.N; i++ {
+		jsonNumberRegexp.MatchString(s)
+	}
+}

gojson/scanner.go

@@ -594,7 +594,7 @@ func (s *scanner) error(c byte, context string) int {
 	return scanError
 }
 
-// quoteChar formats c as a quoted character literal.
+// quoteChar formats c as a quoted character literal
 func quoteChar(c byte) string {
 	// special cases - different from quoted strings
 	if c == '\'' {

gojson/stream.go

@@ -179,11 +179,9 @@ func nonSpace(b []byte) bool {
 
 // An Encoder writes JSON values to an output stream.
 type Encoder struct {
-	w             io.Writer
-	err           error
-	escapeHTML    bool
-	nilSafeSlices bool
-	nilSafeMaps   bool
+	w          io.Writer
+	err        error
+	escapeHTML bool
 
 	indentBuf    *bytes.Buffer
 	indentPrefix string
@@ -204,11 +202,8 @@ func (enc *Encoder) Encode(v any) error {
 	if enc.err != nil {
 		return enc.err
 	}
-
 	e := newEncodeState()
-	defer encodeStatePool.Put(e)
-
-	err := e.marshal(v, encOpts{escapeHTML: enc.escapeHTML, nilSafeMaps: enc.nilSafeMaps, nilSafeSlices: enc.nilSafeSlices})
+	err := e.marshal(v, encOpts{escapeHTML: enc.escapeHTML})
 	if err != nil {
 		return err
 	}
@@ -236,6 +231,7 @@ func (enc *Encoder) Encode(v any) error {
 	if _, err = enc.w.Write(b); err != nil {
 		enc.err = err
 	}
+	encodeStatePool.Put(e)
 	return err
 }
 
@@ -247,13 +243,6 @@ func (enc *Encoder) SetIndent(prefix, indent string) {
 	enc.indentValue = indent
 }
 
-// SetNilSafeCollection specifies whether to represent nil slices and maps as
-// '[]' or '{}' respectfully (flag on) instead of 'null' (default) when marshaling json.
-func (enc *Encoder) SetNilSafeCollection(nilSafeSlices bool, nilSafeMaps bool) {
-	enc.nilSafeSlices = nilSafeSlices
-	enc.nilSafeMaps = nilSafeMaps
-}
-
 // SetEscapeHTML specifies whether problematic HTML characters
 // should be escaped inside JSON quoted strings.
 // The default behavior is to escape &, <, and > to \u0026, \u003c, and \u003e

gojson/stream_test.go

@@ -12,7 +12,6 @@ import (
 	"net/http"
 	"net/http/httptest"
 	"reflect"
-	"runtime/debug"
 	"strings"
 	"testing"
 )
@@ -42,7 +41,7 @@ false
 
 func TestEncoder(t *testing.T) {
 	for i := 0; i <= len(streamTest); i++ {
-		var buf strings.Builder
+		var buf bytes.Buffer
 		enc := NewEncoder(&buf)
 		// Check that enc.SetIndent("", "") turns off indentation.
 		enc.SetIndent(">", ".")
@@ -60,43 +59,6 @@ func TestEncoder(t *testing.T) {
 	}
 }
 
-func TestEncoderErrorAndReuseEncodeState(t *testing.T) {
-	// Disable the GC temporarily to prevent encodeState's in Pool being cleaned away during the test.
-	percent := debug.SetGCPercent(-1)
-	defer debug.SetGCPercent(percent)
-
-	// Trigger an error in Marshal with cyclic data.
-	type Dummy struct {
-		Name string
-		Next *Dummy
-	}
-	dummy := Dummy{Name: "Dummy"}
-	dummy.Next = &dummy
-
-	var buf bytes.Buffer
-	enc := NewEncoder(&buf)
-	if err := enc.Encode(dummy); err == nil {
-		t.Errorf("Encode(dummy) == nil; want error")
-	}
-
-	type Data struct {
-		A string
-		I int
-	}
-	data := Data{A: "a", I: 1}
-	if err := enc.Encode(data); err != nil {
-		t.Errorf("Marshal(%v) = %v", data, err)
-	}
-
-	var data2 Data
-	if err := Unmarshal(buf.Bytes(), &data2); err != nil {
-		t.Errorf("Unmarshal(%v) = %v", data2, err)
-	}
-	if data2 != data {
-		t.Errorf("expect: %v, but get: %v", data, data2)
-	}
-}
-
 var streamEncodedIndent = `0.1
 "hello"
 null
@@ -115,7 +77,7 @@ false
 `
 
 func TestEncoderIndent(t *testing.T) {
-	var buf strings.Builder
+	var buf bytes.Buffer
 	enc := NewEncoder(&buf)
 	enc.SetIndent(">", ".")
 	for _, v := range streamTest {
@@ -185,7 +147,7 @@ func TestEncoderSetEscapeHTML(t *testing.T) {
 			`{"bar":"\"<html>foobar</html>\""}`,
 		},
 	} {
-		var buf strings.Builder
+		var buf bytes.Buffer
 		enc := NewEncoder(&buf)
 		if err := enc.Encode(tt.v); err != nil {
 			t.Errorf("Encode(%s): %s", tt.name, err)
@@ -347,6 +309,21 @@ func TestBlocking(t *testing.T) {
 	}
 }
 
+func BenchmarkEncoderEncode(b *testing.B) {
+	b.ReportAllocs()
+	type T struct {
+		X, Y string
+	}
+	v := &T{"foo", "bar"}
+	b.RunParallel(func(pb *testing.PB) {
+		for pb.Next() {
+			if err := NewEncoder(io.Discard).Encode(v); err != nil {
+				b.Fatal(err)
+			}
+		}
+	})
+}
+
 type tokenStreamCase struct {
 	json      string
 	expTokens []any
@@ -495,45 +472,3 @@ func TestHTTPDecoding(t *testing.T) {
 		t.Errorf("err = %v; want io.EOF", err)
 	}
 }
-
-func TestEncoderSetNilSafeCollection(t *testing.T) {
-	var (
-		nilSlice  []interface{}
-		pNilSlice *[]interface{}
-		nilMap    map[string]interface{}
-		pNilMap   *map[string]interface{}
-	)
-	for _, tt := range []struct {
-		name        string
-		v           interface{}
-		want        string
-		rescuedWant string
-	}{
-		{"nilSlice", nilSlice, "null", "[]"},
-		{"nonNilSlice", []interface{}{}, "[]", "[]"},
-		{"sliceWithValues", []interface{}{1, 2, 3}, "[1,2,3]", "[1,2,3]"},
-		{"pNilSlice", pNilSlice, "null", "null"},
-		{"nilMap", nilMap, "null", "{}"},
-		{"nonNilMap", map[string]interface{}{}, "{}", "{}"},
-		{"mapWithValues", map[string]interface{}{"1": 1, "2": 2, "3": 3}, "{\"1\":1,\"2\":2,\"3\":3}", "{\"1\":1,\"2\":2,\"3\":3}"},
-		{"pNilMap", pNilMap, "null", "null"},
-	} {
-		var buf bytes.Buffer
-		enc := NewEncoder(&buf)
-		if err := enc.Encode(tt.v); err != nil {
-			t.Fatalf("Encode(%s): %s", tt.name, err)
-		}
-		if got := strings.TrimSpace(buf.String()); got != tt.want {
-			t.Errorf("Encode(%s) = %#q, want %#q", tt.name, got, tt.want)
-		}
-		buf.Reset()
-		enc.SetNilSafeCollection(true, true)
-		if err := enc.Encode(tt.v); err != nil {
-			t.Fatalf("SetNilSafeCollection(true) Encode(%s): %s", tt.name, err)
-		}
-		if got := strings.TrimSpace(buf.String()); got != tt.rescuedWant {
-			t.Errorf("SetNilSafeCollection(true) Encode(%s) = %#q, want %#q",
-				tt.name, got, tt.want)
-		}
-	}
-}

googleapi/README.md

@@ -0,0 +1,54 @@
+
+Google OAuth Setup (to send mails)
+==================================
+
+
+ - Login @ https://console.cloud.google.com
+
+ - GMail API akivieren: https://console.cloud.google.com/apis/library/gmail.googleapis.com?
+
+ - Create new Project (aka 'BackendMailAPI') @ https://console.cloud.google.com/projectcreate
+   User Type: Intern
+   Anwendungsname: 'BackendMailAPI'
+   Support-Email: ...
+   Authorisierte Domains: 'heydyno.de' (or project domain)
+   Kontakt-Email: ...
+   
+
+ - Unter "Anmeldedaten" neuer OAuth Client erstellen @ https://console.cloud.google.com/apis/credentials
+   Anwendungstyp: Web
+   Name: 'BackendMailOAuth'
+   Redirect-Uri: 'http://localhost/oauth'
+   Client-ID und Client-Key merken
+
+ - Open in Browser:
+   https://accounts.google.com/o/oauth2/v2/auth?redirect_uri=http://localhost/oauth&prompt=consent&response_type=code&client_id={...}&scope=https://www.googleapis.com/auth/gmail.send&access_type=offline
+   Code aus redirected URI merken
+
+ - Code via request einlösen (und refresh_roken merken):
+
+```
+curl --request POST \
+  --url https://oauth2.googleapis.com/token \
+  --data code={...} \
+  --data redirect_uri=http://localhost/oauth \
+  --data client_id={...} \
+  --data client_secret={...} \
+  --data grant_type=authorization_code \
+  --data scope=https://www.googleapis.com/auth/gmail.send
+```
+
+ - Fertig, mit `client_id`, `client_secret` und `refresh_token` kann das package benutzt werden
+
+
+
+
+
+
+
+
+
+
+
+
+

googleapi/attachment.go

@@ -0,0 +1,46 @@
+package googleapi
+
+import (
+	"encoding/base64"
+	"fmt"
+)
+
+type MailAttachment struct {
+	IsInline    bool
+	ContentType string
+	Filename    string
+	Data        []byte
+}
+
+func (a MailAttachment) dump() []string {
+	res := make([]string, 0, 4)
+
+	if a.ContentType != "" {
+		res = append(res, "Content-Type: "+a.ContentType+"; charset=UTF-8")
+	}
+
+	res = append(res, "Content-Transfer-Encoding: base64")
+
+	if a.IsInline {
+		if a.Filename != "" {
+			res = append(res, fmt.Sprintf("Content-Disposition: inline;filename=\"%s\"", a.Filename))
+		} else {
+			res = append(res, "Content-Disposition: inline")
+		}
+	} else {
+		if a.Filename != "" {
+			res = append(res, fmt.Sprintf("Content-Disposition: attachment;filename=\"%s\"", a.Filename))
+		} else {
+			res = append(res, "Content-Disposition: attachment")
+		}
+	}
+
+	b64 := base64.StdEncoding.EncodeToString(a.Data)
+	for i := 0; i < len(b64); i += 80 {
+		res = append(res, b64[i:min(i+80, len(b64))])
+	}
+
+	res = append(res)
+
+	return res
+}

googleapi/body.go

@@ -0,0 +1,6 @@
+package googleapi
+
+type MailBody struct {
+	Plain string
+	HTML  string
+}

googleapi/mimeMessage.go

@@ -0,0 +1,224 @@
+package googleapi
+
+import (
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"mime"
+	"strings"
+	"time"
+)
+
+// https://datatracker.ietf.org/doc/html/rfc2822
+func encodeMimeMail(from string, recipients []string, cc []string, bcc []string, subject string, body MailBody, attachments []MailAttachment) string {
+
+	data := make([]string, 0, 32)
+
+	data = append(data, "Date: "+time.Now().Format(time.RFC1123Z))
+	data = append(data, "MIME-Version: 1.0")
+	data = append(data, "From: "+mime.QEncoding.Encode("UTF-8", from))
+	data = append(data, "To: "+strings.Join(langext.ArrMap(recipients, func(v string) string { return mime.QEncoding.Encode("UTF-8", v) }), ", "))
+	if len(cc) > 0 {
+		data = append(data, "To: "+strings.Join(langext.ArrMap(cc, func(v string) string { return mime.QEncoding.Encode("UTF-8", v) }), ", "))
+	}
+	if len(bcc) > 0 {
+		data = append(data, "Bcc: "+strings.Join(langext.ArrMap(bcc, func(v string) string { return mime.QEncoding.Encode("UTF-8", v) }), ", "))
+	}
+	data = append(data, "Subject: "+mime.QEncoding.Encode("UTF-8", subject))
+
+	hasInlineAttachments := langext.ArrAny(attachments, func(v MailAttachment) bool { return v.IsInline })
+	hasNormalAttachments := langext.ArrAny(attachments, func(v MailAttachment) bool { return !v.IsInline })
+	hasPlain := body.Plain != ""
+	hasHTML := body.HTML != ""
+
+	mixedBoundary := langext.MustRawHexUUID()
+	relatedBoundary := langext.MustRawHexUUID()
+	altBoundary := langext.MustRawHexUUID()
+
+	inlineAttachments := langext.ArrFilter(attachments, func(v MailAttachment) bool { return v.IsInline })
+	normalAttachments := langext.ArrFilter(attachments, func(v MailAttachment) bool { return !v.IsInline })
+
+	if hasInlineAttachments && hasNormalAttachments {
+		// "mixed+related"
+
+		data = append(data, "Content-Type: multipart/mixed; boundary="+mixedBoundary)
+		data = append(data, "")
+		data = append(data, "--"+mixedBoundary)
+
+		data = append(data, "Content-Type: multipart/related; boundary="+relatedBoundary)
+		data = append(data, "")
+
+		data = append(data, dumpMailBody(body, hasInlineAttachments, hasNormalAttachments, relatedBoundary, altBoundary)...)
+		data = append(data, "")
+
+		for i, attachment := range inlineAttachments {
+			data = append(data, "--"+relatedBoundary)
+			data = append(data, attachment.dump()...)
+
+			if i < len(inlineAttachments)-1 {
+				data = append(data, "")
+			}
+		}
+
+		data = append(data, "--"+relatedBoundary+"--")
+
+		for i, attachment := range normalAttachments {
+			data = append(data, "--"+mixedBoundary)
+			data = append(data, attachment.dump()...)
+
+			if i < len(normalAttachments)-1 {
+				data = append(data, "")
+			}
+		}
+
+		data = append(data, "--"+mixedBoundary+"--")
+
+	} else if hasNormalAttachments {
+		// "mixed"
+
+		data = append(data, "Content-Type: multipart/mixed; boundary="+mixedBoundary)
+		data = append(data, "")
+
+		data = append(data, dumpMailBody(body, hasInlineAttachments, hasNormalAttachments, mixedBoundary, altBoundary)...)
+		if hasPlain && hasHTML {
+			data = append(data, "")
+		}
+
+		for i, attachment := range normalAttachments {
+			data = append(data, "--"+mixedBoundary)
+			data = append(data, attachment.dump()...)
+
+			if i < len(normalAttachments)-1 {
+				data = append(data, "")
+			}
+		}
+
+		data = append(data, "--"+mixedBoundary+"--")
+
+	} else if hasInlineAttachments {
+		// "related"
+
+		data = append(data, "Content-Type: multipart/related; boundary="+relatedBoundary)
+		data = append(data, "")
+
+		data = append(data, dumpMailBody(body, hasInlineAttachments, hasNormalAttachments, relatedBoundary, altBoundary)...)
+		data = append(data, "")
+
+		for i, attachment := range inlineAttachments {
+			data = append(data, "--"+relatedBoundary)
+			data = append(data, attachment.dump()...)
+
+			if i < len(inlineAttachments)-1 {
+				data = append(data, "")
+			}
+		}
+
+		data = append(data, "--"+relatedBoundary+"--")
+
+	} else if hasPlain && hasHTML {
+		// "alternative"
+
+		data = append(data, "Content-Type: multipart/alternative; boundary="+altBoundary)
+		data = append(data, "")
+
+		data = append(data, dumpMailBody(body, hasInlineAttachments, hasNormalAttachments, altBoundary, altBoundary)...)
+		data = append(data, "")
+
+		data = append(data, "--"+altBoundary+"--")
+
+	} else if hasPlain {
+		// "plain"
+
+		data = append(data, "Content-Type: text/plain; charset=UTF-8")
+		data = append(data, "Content-Transfer-Encoding: 7bit")
+		data = append(data, "")
+		data = append(data, body.Plain)
+
+	} else if hasHTML {
+		// "plain"
+
+		data = append(data, "Content-Type: text/html; charset=UTF-8")
+		data = append(data, "Content-Transfer-Encoding: 7bit")
+		data = append(data, "")
+		data = append(data, body.HTML)
+
+	} else {
+		// "empty??"
+
+	}
+
+	return strings.Join(data, "\r\n")
+}
+
+func dumpMailBody(body MailBody, hasInlineAttachments bool, hasNormalAttachments bool, boundary string, boundaryAlt string) []string {
+
+	if body.HTML != "" && body.Plain != "" && !hasInlineAttachments && hasNormalAttachments {
+		data := make([]string, 0, 16)
+		data = append(data, "--"+boundary)
+		data = append(data, "Content-Type: multipart/alternative; boundary="+boundaryAlt)
+		data = append(data, "")
+		data = append(data, "--"+boundaryAlt)
+		data = append(data, "Content-Type: text/plain; charset=UTF-8")
+		data = append(data, "Content-Transfer-Encoding: 7bit")
+		data = append(data, "")
+		data = append(data, body.Plain)
+		data = append(data, "")
+		data = append(data, "--"+boundaryAlt)
+		data = append(data, "Content-Type: text/html; charset=UTF-8")
+		data = append(data, "Content-Transfer-Encoding: 7bit")
+		data = append(data, "")
+		data = append(data, body.HTML)
+		data = append(data, "")
+		data = append(data, "--"+boundaryAlt+"--")
+		return data
+	}
+
+	if body.HTML != "" && body.Plain != "" && hasInlineAttachments {
+		data := make([]string, 0, 2)
+		data = append(data, "--"+boundary)
+		data = append(data, body.HTML)
+		return data
+	}
+
+	if body.HTML != "" && body.Plain != "" {
+		data := make([]string, 0, 8)
+		data = append(data, "--"+boundary)
+		data = append(data, "Content-Type: text/plain; charset=UTF-8")
+		data = append(data, "Content-Transfer-Encoding: 7bit")
+		data = append(data, "")
+		data = append(data, body.Plain)
+		data = append(data, "")
+		data = append(data, "--"+boundary)
+		data = append(data, "Content-Type: text/html; charset=UTF-8")
+		data = append(data, "Content-Transfer-Encoding: 7bit")
+		data = append(data, "")
+		data = append(data, body.HTML)
+		return data
+	}
+
+	if body.HTML != "" {
+		data := make([]string, 0, 2)
+		data = append(data, "--"+boundary)
+		data = append(data, "Content-Type: text/html; charset=UTF-8")
+		data = append(data, "Content-Transfer-Encoding: 7bit")
+		data = append(data, "")
+		data = append(data, body.HTML)
+		return data
+	}
+
+	if body.Plain != "" {
+		data := make([]string, 0, 2)
+		data = append(data, "--"+boundary)
+		data = append(data, "Content-Type: text/plain; charset=UTF-8")
+		data = append(data, "Content-Transfer-Encoding: 7bit")
+		data = append(data, "")
+		data = append(data, body.Plain)
+		return data
+	}
+
+	data := make([]string, 0, 16)
+	data = append(data, "--"+boundary)
+	data = append(data, "Content-Type: text/plain; charset=UTF-8")
+	data = append(data, "Content-Transfer-Encoding: 7bit")
+	data = append(data, "")
+	data = append(data, "") // no content ?!?
+	return data
+}

googleapi/mimeMessage_test.go

@@ -0,0 +1,80 @@
+package googleapi
+
+import (
+	"gogs.mikescher.com/BlackForestBytes/goext/tst"
+	"os"
+	"testing"
+)
+
+func TestEncodeMimeMail(t *testing.T) {
+
+	mail := encodeMimeMail(
+		"noreply@heydyno.de",
+		[]string{"trash@mikescher.de"},
+		nil,
+		nil,
+		"Hello Test Mail",
+		MailBody{Plain: "Plain Text"},
+		nil)
+
+	verifyMime(mail)
+}
+
+func TestEncodeMimeMail2(t *testing.T) {
+
+	mail := encodeMimeMail(
+		"noreply@heydyno.de",
+		[]string{"trash@mikescher.de"},
+		nil,
+		nil,
+		"Hello Test Mail (alternative)",
+		MailBody{
+			Plain: "Plain Text",
+			HTML:  "<html><body><u>Non</u> Pl<i>ai</i>n T<b>ex</b>t</body></html>",
+		},
+		nil)
+
+	verifyMime(mail)
+}
+
+func TestEncodeMimeMail3(t *testing.T) {
+
+	mail := encodeMimeMail(
+		"noreply@heydyno.de",
+		[]string{"trash@mikescher.de"},
+		nil,
+		nil,
+		"Hello Test Mail (alternative)",
+		MailBody{
+			HTML: "<html><body><u>Non</u> Pl<i>ai</i>n T<b>ex</b>t</body></html>",
+		},
+		[]MailAttachment{
+			{Data: []byte("HelloWorld"), Filename: "test.txt", IsInline: false, ContentType: "text/plain"},
+		})
+
+	verifyMime(mail)
+}
+
+func TestEncodeMimeMail4(t *testing.T) {
+
+	b := tst.Must(os.ReadFile("test_placeholder.png"))(t)
+
+	mail := encodeMimeMail(
+		"noreply@heydyno.de",
+		[]string{"trash@mikescher.de"},
+		nil,
+		nil,
+		"Hello Test Mail (inline)",
+		MailBody{
+			HTML: "<html><body><u>Non</u> Pl<i>ai</i>n T<b>ex</b>t</body></html>",
+		},
+		[]MailAttachment{
+			{Data: b, Filename: "img.png", IsInline: true, ContentType: "image/png"},
+		})
+
+	verifyMime(mail)
+}
+
+func verifyMime(mail string) {
+	//fmt.Printf("%s\n\n", mail)
+}

googleapi/oAuth.go

@@ -0,0 +1,91 @@
+package googleapi
+
+import (
+	"encoding/json"
+	"fmt"
+	"gogs.mikescher.com/BlackForestBytes/goext/exerr"
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"gogs.mikescher.com/BlackForestBytes/goext/timeext"
+	"io"
+	"net/http"
+	"sync"
+	"time"
+)
+
+type GoogleOAuth interface {
+	AccessToken() (string, error)
+}
+
+type oauth struct {
+	clientID     string
+	clientSecret string
+	refreshToken string
+
+	lock        sync.RWMutex
+	accessToken *string
+	expiryDate  *time.Time
+}
+
+func NewGoogleOAuth(clientid string, clientsecret, refreshtoken string) GoogleOAuth {
+	return &oauth{
+		clientID:     clientid,
+		clientSecret: clientsecret,
+		refreshToken: refreshtoken,
+	}
+}
+
+func (c *oauth) AccessToken() (string, error) {
+	c.lock.RLock()
+	if c.accessToken != nil && c.expiryDate != nil && (*c.expiryDate).After(time.Now()) {
+		c.lock.RUnlock()
+		return *c.accessToken, nil // still valid
+	}
+	c.lock.RUnlock()
+
+	httpclient := http.Client{}
+
+	url := fmt.Sprintf("https://oauth2.googleapis.com/token?client_id=%s&client_secret=%s&grant_type=%s&refresh_token=%s",
+		c.clientID,
+		c.clientSecret,
+		"refresh_token",
+		c.refreshToken)
+
+	req, err := http.NewRequest(http.MethodPost, url, nil)
+	if err != nil {
+		return "", err
+	}
+
+	reqStartTime := time.Now()
+
+	res, err := httpclient.Do(req)
+
+	type response struct {
+		AccessToken string `json:"access_token"`
+		ExpiresIn   int    `json:"expires_in"`
+		Scope       string `json:"scope"`
+		TokenType   string `json:"token_type"`
+	}
+
+	var r response
+
+	data, err := io.ReadAll(res.Body)
+	if err != nil {
+		return "", err
+	}
+
+	err = json.Unmarshal(data, &r)
+	if err != nil {
+		return "", err
+	}
+
+	if r.ExpiresIn == 0 || r.AccessToken == "" {
+		return "", exerr.New(exerr.TypeGoogleResponse, "google oauth returned no response").Str("body", string(data)).Build()
+	}
+
+	c.lock.Lock()
+	c.expiryDate = langext.Ptr(reqStartTime.Add(timeext.FromSeconds(r.ExpiresIn - 10)))
+	c.accessToken = langext.Ptr(r.AccessToken)
+	c.lock.Unlock()
+
+	return r.AccessToken, nil
+}

googleapi/sendMail.go

@@ -0,0 +1,69 @@
+package googleapi
+
+import (
+	"bytes"
+	"context"
+	"encoding/base64"
+	"encoding/json"
+	"fmt"
+	"gogs.mikescher.com/BlackForestBytes/goext"
+	"gogs.mikescher.com/BlackForestBytes/goext/exerr"
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"io"
+	"net/http"
+)
+
+type MailRef struct {
+	ID       string   `json:"id"`
+	ThreadID string   `json:"threadId"`
+	LabelIDs []string `json:"labelIds"`
+}
+
+func (c *client) SendMail(ctx context.Context, from string, recipients []string, cc []string, bcc []string, subject string, body MailBody, attachments []MailAttachment) (MailRef, error) {
+
+	mm := encodeMimeMail(from, recipients, cc, bcc, subject, body, attachments)
+
+	tok, err := c.oauth.AccessToken()
+	if err != nil {
+		return MailRef{}, exerr.Wrap(err, "").Build()
+	}
+
+	url := fmt.Sprintf("https://gmail.googleapis.com/gmail/v1/users/%s/messages/send?alt=json&prettyPrint=false", "me")
+
+	msgbody, err := json.Marshal(langext.H{"raw": base64.URLEncoding.EncodeToString([]byte(mm))})
+	if err != nil {
+		return MailRef{}, exerr.Wrap(err, "").Build()
+	}
+
+	req, err := http.NewRequestWithContext(ctx, http.MethodPost, url, bytes.NewReader(msgbody))
+	if err != nil {
+		return MailRef{}, exerr.Wrap(err, "").Build()
+	}
+
+	req.Header.Add("Authorization", "Bearer "+tok)
+	req.Header.Add("X-Goog-Api-Client", "blackforestbytes-goext/"+goext.GoextVersion)
+	req.Header.Add("User-Agent", "blackforestbytes-goext/"+goext.GoextVersion)
+	req.Header.Add("Content-Type", "application/json")
+
+	resp, err := c.http.Do(req)
+	if err != nil {
+		return MailRef{}, exerr.Wrap(err, "").Build()
+	}
+
+	respBody, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return MailRef{}, exerr.Wrap(err, "").Build()
+	}
+
+	if resp.StatusCode != 200 {
+		return MailRef{}, exerr.New(exerr.TypeGoogleStatuscode, "gmail returned non-200 statuscode").Int("sc", resp.StatusCode).Str("body", string(respBody)).Build()
+	}
+
+	var respObj MailRef
+	err = json.Unmarshal(respBody, &respObj)
+	if err != nil {
+		return MailRef{}, exerr.Wrap(err, "").Str("body", string(respBody)).Build()
+	}
+
+	return respObj, nil
+}

googleapi/sendMail_test.go

@@ -0,0 +1,151 @@
+package googleapi
+
+import (
+	"context"
+	"fmt"
+	"gogs.mikescher.com/BlackForestBytes/goext/exerr"
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"gogs.mikescher.com/BlackForestBytes/goext/tst"
+	"os"
+	"testing"
+)
+
+func TestMain(m *testing.M) {
+	if !exerr.Initialized() {
+		exerr.Init(exerr.ErrorPackageConfigInit{ZeroLogErrTraces: langext.PFalse, ZeroLogAllTraces: langext.PFalse})
+	}
+	os.Exit(m.Run())
+}
+
+func TestSendMail1(t *testing.T) {
+	t.Skip()
+	return
+
+	auth := NewGoogleOAuth(
+		"554617284247-8di0j6s5dcmlk4lmk4hdf9kdn8scss54.apps.googleusercontent.com",
+		"TODO",
+		"TODO")
+
+	ctx := context.Background()
+
+	gclient := NewGoogleClient(auth)
+
+	mail, err := gclient.SendMail(
+		ctx,
+		"noreply@heydyno.de",
+		[]string{"trash@mikescher.de"},
+		nil,
+		nil,
+		"Hello Test Mail",
+		MailBody{Plain: "Plain Text"},
+		nil)
+
+	tst.AssertNoErr(t, err)
+
+	fmt.Printf("mail.ID        := %s\n", mail.ID)
+	fmt.Printf("mail.ThreadID  := %s\n", mail.ThreadID)
+	fmt.Printf("mail.LabelIDs  := %v\n", mail.LabelIDs)
+}
+
+func TestSendMail2(t *testing.T) {
+	t.Skip()
+	return
+
+	auth := NewGoogleOAuth(
+		"554617284247-8di0j6s5dcmlk4lmk4hdf9kdn8scss54.apps.googleusercontent.com",
+		"TODO",
+		"TODO")
+
+	ctx := context.Background()
+
+	gclient := NewGoogleClient(auth)
+
+	mail, err := gclient.SendMail(
+		ctx,
+		"noreply@heydyno.de",
+		[]string{"trash@mikescher.de"},
+		nil,
+		nil,
+		"Hello Test Mail (alternative)",
+		MailBody{
+			Plain: "Plain Text",
+			HTML:  "<html><body><u>Non</u> Pl<i>ai</i>n T<b>ex</b>t</body></html>",
+		},
+		nil)
+
+	tst.AssertNoErr(t, err)
+
+	fmt.Printf("mail.ID        := %s\n", mail.ID)
+	fmt.Printf("mail.ThreadID  := %s\n", mail.ThreadID)
+	fmt.Printf("mail.LabelIDs  := %v\n", mail.LabelIDs)
+}
+
+func TestSendMail3(t *testing.T) {
+	t.Skip()
+	return
+
+	auth := NewGoogleOAuth(
+		"554617284247-8di0j6s5dcmlk4lmk4hdf9kdn8scss54.apps.googleusercontent.com",
+		"TODO",
+		"TODO")
+
+	ctx := context.Background()
+
+	gclient := NewGoogleClient(auth)
+
+	mail, err := gclient.SendMail(
+		ctx,
+		"noreply@heydyno.de",
+		[]string{"trash@mikescher.de"},
+		nil,
+		nil,
+		"Hello Test Mail (attach)",
+		MailBody{
+			HTML: "<html><body><u>Non</u> Pl<i>ai</i>n T<b>ex</b>t</body></html>",
+		},
+		[]MailAttachment{
+			{Data: []byte("HelloWorld"), Filename: "test.txt", IsInline: false, ContentType: "text/plain"},
+		})
+
+	tst.AssertNoErr(t, err)
+
+	fmt.Printf("mail.ID        := %s\n", mail.ID)
+	fmt.Printf("mail.ThreadID  := %s\n", mail.ThreadID)
+	fmt.Printf("mail.LabelIDs  := %v\n", mail.LabelIDs)
+}
+
+func TestSendMail4(t *testing.T) {
+	t.Skip()
+	return
+
+	auth := NewGoogleOAuth(
+		"554617284247-8di0j6s5dcmlk4lmk4hdf9kdn8scss54.apps.googleusercontent.com",
+		"TODO",
+		"TODO")
+
+	ctx := context.Background()
+
+	gclient := NewGoogleClient(auth)
+
+	b := tst.Must(os.ReadFile("test_placeholder.png"))(t)
+
+	mail, err := gclient.SendMail(
+		ctx,
+		"noreply@heydyno.de",
+		[]string{"trash@mikescher.de"},
+		nil,
+		nil,
+		"Hello Test Mail (inline)",
+		MailBody{
+			HTML: "<html><body><u>Non</u> Pl<i>ai</i>n T<b>ex</b>t</body></html>",
+		},
+		[]MailAttachment{
+			{Data: b, Filename: "img.png", IsInline: true, ContentType: "image/png"},
+		})
+
+	tst.AssertNoErr(t, err)
+
+	fmt.Printf("mail.ID        := %s\n", mail.ID)
+	fmt.Printf("mail.ThreadID  := %s\n", mail.ThreadID)
+	fmt.Printf("mail.LabelIDs  := %v\n", mail.LabelIDs)
+}

googleapi/service.go

@@ -0,0 +1,22 @@
+package googleapi
+
+import (
+	"context"
+	"net/http"
+)
+
+type GoogleClient interface {
+	SendMail(ctx context.Context, from string, recipients []string, cc []string, bcc []string, subject string, body MailBody, attachments []MailAttachment) (MailRef, error)
+}
+
+type client struct {
+	oauth GoogleOAuth
+	http  http.Client
+}
+
+func NewGoogleClient(oauth GoogleOAuth) GoogleClient {
+	return &client{
+		oauth: oauth,
+		http:  http.Client{},
+	}
+}

langext/baseAny.go

@@ -0,0 +1,178 @@
+package langext
+
+import (
+	"crypto/rand"
+	"errors"
+	"math"
+	"math/big"
+)
+
+type AnyBaseConverter struct {
+	base    uint64
+	charset []rune
+}
+
+func NewAnyBaseConverter(cs string) AnyBaseConverter {
+	rcs := []rune(cs)
+	return AnyBaseConverter{
+		base:    uint64(len(rcs)),
+		charset: rcs,
+	}
+}
+
+func (bc AnyBaseConverter) Rand(rlen int) string {
+	biBase := big.NewInt(int64(bc.base))
+
+	randMax := big.NewInt(math.MaxInt64)
+
+	r := ""
+
+	for i := 0; i < rlen; i++ {
+		v, err := rand.Int(rand.Reader, randMax)
+		if err != nil {
+			panic(err)
+		}
+
+		r += string(bc.charset[v.Mod(v, biBase).Int64()])
+	}
+
+	return r
+}
+
+func (bc AnyBaseConverter) EncodeUInt64(num uint64) string {
+	if num == 0 {
+		return "0"
+	}
+
+	b := ""
+
+	// loop as long the num is bigger than zero
+	for num > 0 {
+		r := num % bc.base
+
+		num -= r
+		num /= base62Base
+
+		b += string(bc.charset[int(r)])
+	}
+
+	return b
+}
+
+func (bc AnyBaseConverter) DecodeUInt64(str string) (uint64, error) {
+	if str == "" {
+		return 0, errors.New("empty string")
+	}
+
+	result := uint64(0)
+
+	for _, v := range str {
+		result *= base62Base
+
+		pos := ArrFirstIndex(bc.charset, v)
+		if pos == -1 {
+			return 0, errors.New("invalid character: " + string(v))
+		}
+
+		result += uint64(pos)
+	}
+
+	return result, nil
+}
+
+func (bc AnyBaseConverter) Encode(src []byte) string {
+	value := new(big.Int)
+	value.SetBytes(src)
+	return bc.EncodeBigInt(value)
+}
+
+func (bc AnyBaseConverter) EncodeBigInt(src *big.Int) string {
+	value := new(big.Int)
+	value.Set(src)
+
+	isneg := value.Sign() < 0
+
+	answer := ""
+
+	if isneg {
+		value.Neg(value)
+	}
+
+	biBase := big.NewInt(int64(bc.base))
+
+	rem := new(big.Int)
+
+	for value.Sign() > 0 {
+		value.QuoRem(value, biBase, rem)
+		answer = string(bc.charset[rem.Int64()]) + answer
+	}
+
+	if isneg {
+		return "-" + answer
+	} else {
+		return answer
+	}
+}
+
+func (bc AnyBaseConverter) Decode(src string) ([]byte, error) {
+	value, err := bc.DecodeToBigInt(src)
+	if err != nil {
+		return nil, err
+	}
+	return value.Bytes(), nil
+}
+
+func (bc AnyBaseConverter) DecodeToBigInt(_src string) (*big.Int, error) {
+	result := new(big.Int)
+	result.SetInt64(0)
+
+	src := []rune(_src)
+
+	if len(src) == 0 {
+		return nil, errors.New("string is empty")
+	}
+	if bc.base < 2 {
+		return nil, errors.New("not enough digits")
+	}
+
+	i := 0
+
+	sign := new(big.Int)
+	sign.SetInt64(1)
+	if src[i] == '+' {
+		i++
+	} else if src[i] == '-' {
+		i++
+		sign.SetInt64(-1)
+	}
+
+	if i >= len(src) {
+		return nil, errors.New("no digits in input")
+	}
+
+	biBase := big.NewInt(int64(bc.base))
+
+	oldResult := new(big.Int)
+
+	for ; i < len(src); i++ {
+		n := ArrFirstIndex(bc.charset, src[i])
+		if n < 0 {
+			return nil, errors.New("invalid characters in input")
+		}
+
+		oldResult.Set(result)
+
+		result.Mul(result, biBase)
+		result.Add(result, big.NewInt(int64(n)))
+
+		if result.Cmp(oldResult) < 0 {
+			return nil, errors.New("overflow")
+		}
+	}
+
+	if sign.Cmp(big.NewInt(0)) < 0 {
+		result.Neg(result)
+	}
+
+	return result, nil
+}

langext/baseAny_test.go

@@ -0,0 +1,80 @@
+package langext
+
+import (
+	"gogs.mikescher.com/BlackForestBytes/goext/tst"
+	"testing"
+)
+
+func _anyEncStr(bc AnyBaseConverter, v string) string {
+	vr := bc.Encode([]byte(v))
+	return vr
+}
+
+func _anyDecStr(bc AnyBaseConverter, v string) string {
+	vr, err := bc.Decode(v)
+	if err != nil {
+		panic(err)
+	}
+	return string(vr)
+}
+
+func TestAnyBase58DefaultEncoding(t *testing.T) {
+	tst.AssertEqual(t, _anyEncStr(NewAnyBaseConverter("123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz"), "Hello"), "9Ajdvzr")
+	tst.AssertEqual(t, _anyEncStr(NewAnyBaseConverter("123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz"), "If debugging is the process of removing software bugs, then programming must be the process of putting them in."), "48638SMcJuah5okqPx4kCVf5d8QAdgbdNf28g7ReY13prUENNbMyssjq5GjsrJHF5zeZfqs4uJMUJHr7VbrU4XBUZ2Fw9DVtqtn9N1eXucEWSEZahXV6w4ysGSWqGdpeYTJf1MdDzTg8vfcQViifJjZX")
+}
+
+func TestAnyBase58DefaultDecoding(t *testing.T) {
+	tst.AssertEqual(t, _anyDecStr(NewAnyBaseConverter("123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz"), "9Ajdvzr"), "Hello")
+	tst.AssertEqual(t, _anyDecStr(NewAnyBaseConverter("123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz"), "48638SMcJuah5okqPx4kCVf5d8QAdgbdNf28g7ReY13prUENNbMyssjq5GjsrJHF5zeZfqs4uJMUJHr7VbrU4XBUZ2Fw9DVtqtn9N1eXucEWSEZahXV6w4ysGSWqGdpeYTJf1MdDzTg8vfcQViifJjZX"), "If debugging is the process of removing software bugs, then programming must be the process of putting them in.")
+}
+
+func TestAnyBaseDecode(t *testing.T) {
+
+	const (
+		Binary  = "01"
+		Decimal = "0123456789"
+		Hex     = "0123456789ABCDEF"
+		DNA     = "ACGT"
+		Base32  = "ABCDEFGHIJKLMNOPQRSTUVWXYZ234567"
+		Base58  = "123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz"
+		Base62  = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
+		Base64  = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"
+		Base256 = "🚀🪐☄🛰🌌🌑🌒🌓🌔🌕🌖🌗🌘🌍🌏🌎🐉☀💻🖥💾💿😂❤😍🤣😊🙏💕😭😘👍😅👏😁🔥🥰💔💖💙😢🤔😆🙄💪😉☺👌🤗💜😔😎😇🌹🤦🎉💞✌✨🤷😱😌🌸🙌😋💗💚😏💛🙂💓🤩😄😀🖤😃💯🙈👇🎶😒🤭❣😜💋👀😪😑💥🙋😞😩😡🤪👊🥳😥🤤👉💃😳✋😚😝😴🌟😬🙃🍀🌷😻😓⭐✅🥺🌈😈🤘💦✔😣🏃💐☹🎊💘😠☝😕🌺🎂🌻😐🖕💝🙊😹🗣💫💀👑🎵🤞😛🔴😤🌼😫⚽🤙☕🏆🤫👈😮🙆🍻🍃🐶💁😲🌿🧡🎁⚡🌞🎈❌✊👋😰🤨😶🤝🚶💰🍓💢🤟🙁🚨💨🤬✈🎀🍺🤓😙💟🌱😖👶🥴▶➡❓💎💸⬇😨🌚🦋😷🕺⚠🙅😟😵👎🤲🤠🤧📌🔵💅🧐🐾🍒😗🤑🌊🤯🐷☎💧😯💆👆🎤🙇🍑❄🌴💣🐸💌📍🥀🤢👅💡💩👐📸👻🤐🤮🎼🥵🚩🍎🍊👼💍📣🥂"
+	)
+
+	type TestDef struct {
+		FromCS  string
+		FromVal string
+		ToCS    string
+		ToVal   string
+	}
+
+	defs := []TestDef{
+		{Binary, "10100101011100000101010", Decimal, "5421098"},
+		{Decimal, "5421098", DNA, "CCAGGTGAAGGG"},
+		{Decimal, "5421098", DNA, "CCAGGTGAAGGG"},
+		{Decimal, "80085", Base256, "🪐💞🔵"},
+		{Hex, "48656C6C6C20576F526C5421", Base64, "SGVsbGwgV29SbFQh"},
+		{Base64, "SGVsbGw/gV29SbF+Qh", Base32, "CIMVWGY3B7QFO32SNRPZBB"},
+		{Base64, "SGVsbGw/gV29SbF+Qh", Base58, "2fUsGKQUcgQcwSqpvy6"},
+		{Base64, "SGVsbGw/gV29SbF+Qh", Base62, "V34nvybdQ3m3RHk9Sr"},
+	}
+
+	for _, def := range defs {
+
+		d1 := NewAnyBaseConverter(def.FromCS)
+		d2 := NewAnyBaseConverter(def.ToCS)
+
+		v1 := tst.Must(d1.Decode(def.FromVal))(t)
+		v2 := tst.Must(d2.Decode(def.ToVal))(t)
+
+		tst.AssertArrayEqual(t, v1, v2)
+
+		str2 := d2.Encode(v1)
+		tst.AssertEqual(t, str2, def.ToVal)
+
+		str1 := d1.Encode(v2)
+		tst.AssertEqual(t, str1, def.FromVal)
+
+	}
+}

langext/maps.go

@@ -29,6 +29,14 @@ func ArrToMap[T comparable, V any](a []V, keyfunc func(V) T) map[T]V {
 	return result
 }
 
+func ArrToKVMap[T any, K comparable, V any](a []T, keyfunc func(T) K, valfunc func(T) V) map[K]V {
+	result := make(map[K]V, len(a))
+	for _, v := range a {
+		result[keyfunc(v)] = valfunc(v)
+	}
+	return result
+}
+
 func ArrToSet[T comparable](a []T) map[T]bool {
 	result := make(map[T]bool, len(a))
 	for _, v := range a {

langext/panic.go

@@ -1,7 +1,10 @@
 package langext
 
+import "runtime/debug"
+
 type PanicWrappedErr struct {
 	panic any
+	Stack string
 }
 
 func (p PanicWrappedErr) Error() string {
@@ -15,7 +18,7 @@ func (p PanicWrappedErr) ReoveredObj() any {
 func RunPanicSafe(fn func()) (err error) {
 	defer func() {
 		if rec := recover(); rec != nil {
-			err = PanicWrappedErr{panic: rec}
+			err = PanicWrappedErr{panic: rec, Stack: string(debug.Stack())}
 		}
 	}()
 
@@ -27,7 +30,7 @@ func RunPanicSafe(fn func()) (err error) {
 func RunPanicSafeR1(fn func() error) (err error) {
 	defer func() {
 		if rec := recover(); rec != nil {
-			err = PanicWrappedErr{panic: rec}
+			err = PanicWrappedErr{panic: rec, Stack: string(debug.Stack())}
 		}
 	}()
 
@@ -38,7 +41,7 @@ func RunPanicSafeR2[T1 any](fn func() (T1, error)) (r1 T1, err error) {
 	defer func() {
 		if rec := recover(); rec != nil {
 			r1 = *new(T1)
-			err = PanicWrappedErr{panic: rec}
+			err = PanicWrappedErr{panic: rec, Stack: string(debug.Stack())}
 		}
 	}()
 
@@ -50,7 +53,7 @@ func RunPanicSafeR3[T1 any, T2 any](fn func() (T1, T2, error)) (r1 T1, r2 T2, er
 		if rec := recover(); rec != nil {
 			r1 = *new(T1)
 			r2 = *new(T2)
-			err = PanicWrappedErr{panic: rec}
+			err = PanicWrappedErr{panic: rec, Stack: string(debug.Stack())}
 		}
 	}()
 
@@ -63,7 +66,7 @@ func RunPanicSafeR4[T1 any, T2 any, T3 any](fn func() (T1, T2, T3, error)) (r1 T
 			r1 = *new(T1)
 			r2 = *new(T2)
 			r3 = *new(T3)
-			err = PanicWrappedErr{panic: rec}
+			err = PanicWrappedErr{panic: rec, Stack: string(debug.Stack())}
 		}
 	}()
 

langext/pointer.go

@@ -10,10 +10,23 @@ var PTrue = Ptr(true)
 // PFalse := &false
 var PFalse = Ptr(false)
 
+// PNil := &nil
+var PNil = Ptr[any](nil)
+
 func Ptr[T any](v T) *T {
 	return &v
 }
 
+func DblPtr[T any](v T) **T {
+	v_ := &v
+	return &v_
+}
+
+func DblPtrNil[T any]() **T {
+	var v *T = nil
+	return &v
+}
+
 func PtrInt32(v int32) *int32 {
 	return &v
 }
@@ -35,7 +48,7 @@ func IsNil(i interface{}) bool {
 		return true
 	}
 	switch reflect.TypeOf(i).Kind() {
-	case reflect.Ptr, reflect.Map, reflect.Array, reflect.Chan, reflect.Slice:
+	case reflect.Ptr, reflect.Map, reflect.Chan, reflect.Slice, reflect.Func, reflect.UnsafePointer:
 		return reflect.ValueOf(i).IsNil()
 	}
 	return false

mongoext/registry.go

@@ -3,6 +3,9 @@ package mongoext
 import (
 	"go.mongodb.org/mongo-driver/bson"
 	"go.mongodb.org/mongo-driver/bson/bsoncodec"
+	"go.mongodb.org/mongo-driver/bson/bsontype"
+	"go.mongodb.org/mongo-driver/bson/primitive"
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
 	"gogs.mikescher.com/BlackForestBytes/goext/rfctime"
 	"reflect"
 )
@@ -16,13 +19,29 @@ func CreateGoExtBsonRegistry() *bsoncodec.Registry {
 	rb.RegisterTypeDecoder(reflect.TypeOf(rfctime.RFC3339NanoTime{}), rfctime.RFC3339NanoTime{})
 	rb.RegisterTypeDecoder(reflect.TypeOf(&rfctime.RFC3339NanoTime{}), rfctime.RFC3339NanoTime{})
 
+	rb.RegisterTypeDecoder(reflect.TypeOf(rfctime.UnixTime{}), rfctime.UnixTime{})
+	rb.RegisterTypeDecoder(reflect.TypeOf(&rfctime.UnixTime{}), rfctime.UnixTime{})
+
+	rb.RegisterTypeDecoder(reflect.TypeOf(rfctime.UnixMilliTime{}), rfctime.UnixMilliTime{})
+	rb.RegisterTypeDecoder(reflect.TypeOf(&rfctime.UnixMilliTime{}), rfctime.UnixMilliTime{})
+
+	rb.RegisterTypeDecoder(reflect.TypeOf(rfctime.UnixNanoTime{}), rfctime.UnixNanoTime{})
+	rb.RegisterTypeDecoder(reflect.TypeOf(&rfctime.UnixNanoTime{}), rfctime.UnixNanoTime{})
+
 	rb.RegisterTypeDecoder(reflect.TypeOf(rfctime.Date{}), rfctime.Date{})
 	rb.RegisterTypeDecoder(reflect.TypeOf(&rfctime.Date{}), rfctime.Date{})
 
+	rb.RegisterTypeDecoder(reflect.TypeOf(rfctime.SecondsF64(0)), rfctime.SecondsF64(0))
+	rb.RegisterTypeDecoder(reflect.TypeOf(langext.Ptr(rfctime.SecondsF64(0))), rfctime.SecondsF64(0))
+
 	bsoncodec.DefaultValueEncoders{}.RegisterDefaultEncoders(rb)
 	bsoncodec.DefaultValueDecoders{}.RegisterDefaultDecoders(rb)
 
 	bson.PrimitiveCodecs{}.RegisterPrimitiveCodecs(rb)
 
+	// otherwise we get []primitve.E when unmarshalling into any
+	// which will result in {'key': .., 'value': ...}[] json when json-marshalling
+	rb.RegisterTypeMapEntry(bsontype.EmbeddedDocument, reflect.TypeOf(primitive.M{}))
+
 	return rb.Build()
 }

pagination/filter.go

@@ -0,0 +1,28 @@
+package pagination
+
+import (
+	"go.mongodb.org/mongo-driver/bson"
+	"go.mongodb.org/mongo-driver/mongo"
+)
+
+type Filter interface {
+	FilterQuery() mongo.Pipeline
+	Sort() bson.D
+}
+
+type dynamicFilter struct {
+	pipeline mongo.Pipeline
+	sort     bson.D
+}
+
+func (d dynamicFilter) FilterQuery() mongo.Pipeline {
+	return d.pipeline
+}
+
+func (d dynamicFilter) Sort() bson.D {
+	return d.sort
+}
+
+func CreateFilter(pipeline mongo.Pipeline, sort bson.D) Filter {
+	return dynamicFilter{pipeline: pipeline, sort: sort}
+}

pagination/pagination.go

@@ -0,0 +1,16 @@
+package pagination
+
+type Pagination struct {
+	Page             int `json:"page"`             // page (first page == 1)
+	Limit            int `json:"limit"`            // max-page-size
+	TotalPages       int `json:"totalPages"`       // total page-count
+	TotalItems       int `json:"totalItems"`       // total items-count
+	CurrentPageCount int `json:"currentPageCount"` // item-count in current page ( == len(data) )
+}
+
+func CalcPaginationTotalPages(totalItems int, limit int) int {
+	if totalItems == 0 {
+		return 0
+	}
+	return 1 + (totalItems-1)/limit
+}

rfctime/seconds.go

@@ -2,7 +2,14 @@ package rfctime
 
 import (
 	"encoding/json"
+	"errors"
+	"fmt"
+	"go.mongodb.org/mongo-driver/bson"
+	"go.mongodb.org/mongo-driver/bson/bsoncodec"
+	"go.mongodb.org/mongo-driver/bson/bsonrw"
+	"go.mongodb.org/mongo-driver/bson/bsontype"
 	"gogs.mikescher.com/BlackForestBytes/goext/timeext"
+	"reflect"
 	"time"
 )
 
@@ -54,6 +61,63 @@ func (d SecondsF64) MarshalJSON() ([]byte, error) {
 	return json.Marshal(secs)
 }
 
+func (d *SecondsF64) UnmarshalBSONValue(bt bsontype.Type, data []byte) error {
+	if bt == bson.TypeNull {
+		// we can't set nil in UnmarshalBSONValue (so we use default(struct))
+		// Use mongoext.CreateGoExtBsonRegistry if you need to unmarsh pointer values
+		// https://stackoverflow.com/questions/75167597
+		// https://jira.mongodb.org/browse/GODRIVER-2252
+		*d = SecondsF64(0)
+		return nil
+	}
+	if bt != bson.TypeDouble {
+		return errors.New(fmt.Sprintf("cannot unmarshal %v into SecondsF64", bt))
+	}
+	var secValue float64
+	err := bson.RawValue{Type: bt, Value: data}.Unmarshal(&secValue)
+	if err != nil {
+		return err
+	}
+	*d = SecondsF64(int64(secValue * float64(time.Second)))
+	return nil
+}
+
+func (d SecondsF64) MarshalBSONValue() (bsontype.Type, []byte, error) {
+	return bson.MarshalValue(d.Seconds())
+}
+
+func (d SecondsF64) DecodeValue(dc bsoncodec.DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
+	if val.Kind() == reflect.Ptr && val.IsNil() {
+		if !val.CanSet() {
+			return errors.New("ValueUnmarshalerDecodeValue")
+		}
+		val.Set(reflect.New(val.Type().Elem()))
+	}
+
+	tp, src, err := bsonrw.Copier{}.CopyValueToBytes(vr)
+	if err != nil {
+		return err
+	}
+
+	if val.Kind() == reflect.Ptr && len(src) == 0 {
+		val.Set(reflect.Zero(val.Type()))
+		return nil
+	}
+
+	err = d.UnmarshalBSONValue(tp, src)
+	if err != nil {
+		return err
+	}
+
+	if val.Kind() == reflect.Ptr {
+		val.Set(reflect.ValueOf(&d))
+	} else {
+		val.Set(reflect.ValueOf(d))
+	}
+
+	return nil
+}
+
 func NewSecondsF64(t time.Duration) SecondsF64 {
 	return SecondsF64(t)
 }

rfctime/unix.go

@@ -2,6 +2,13 @@ package rfctime
 
 import (
 	"encoding/json"
+	"errors"
+	"fmt"
+	"go.mongodb.org/mongo-driver/bson"
+	"go.mongodb.org/mongo-driver/bson/bsoncodec"
+	"go.mongodb.org/mongo-driver/bson/bsonrw"
+	"go.mongodb.org/mongo-driver/bson/bsontype"
+	"reflect"
 	"strconv"
 	"time"
 )
@@ -59,6 +66,63 @@ func (t *UnixTime) UnmarshalText(data []byte) error {
 	return nil
 }
 
+func (t *UnixTime) UnmarshalBSONValue(bt bsontype.Type, data []byte) error {
+	if bt == bson.TypeNull {
+		// we can't set nil in UnmarshalBSONValue (so we use default(struct))
+		// Use mongoext.CreateGoExtBsonRegistry if you need to unmarsh pointer values
+		// https://stackoverflow.com/questions/75167597
+		// https://jira.mongodb.org/browse/GODRIVER-2252
+		*t = UnixTime{}
+		return nil
+	}
+	if bt != bson.TypeDateTime {
+		return errors.New(fmt.Sprintf("cannot unmarshal %v into UnixTime", bt))
+	}
+	var tt time.Time
+	err := bson.RawValue{Type: bt, Value: data}.Unmarshal(&tt)
+	if err != nil {
+		return err
+	}
+	*t = UnixTime(tt)
+	return nil
+}
+
+func (t UnixTime) MarshalBSONValue() (bsontype.Type, []byte, error) {
+	return bson.MarshalValue(time.Time(t))
+}
+
+func (t UnixTime) DecodeValue(dc bsoncodec.DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
+	if val.Kind() == reflect.Ptr && val.IsNil() {
+		if !val.CanSet() {
+			return errors.New("ValueUnmarshalerDecodeValue")
+		}
+		val.Set(reflect.New(val.Type().Elem()))
+	}
+
+	tp, src, err := bsonrw.Copier{}.CopyValueToBytes(vr)
+	if err != nil {
+		return err
+	}
+
+	if val.Kind() == reflect.Ptr && len(src) == 0 {
+		val.Set(reflect.Zero(val.Type()))
+		return nil
+	}
+
+	err = t.UnmarshalBSONValue(tp, src)
+	if err != nil {
+		return err
+	}
+
+	if val.Kind() == reflect.Ptr {
+		val.Set(reflect.ValueOf(&t))
+	} else {
+		val.Set(reflect.ValueOf(t))
+	}
+
+	return nil
+}
+
 func (t UnixTime) Serialize() string {
 	return strconv.FormatInt(t.Time().Unix(), 10)
 }

rfctime/unixMilli.go

@@ -2,6 +2,13 @@ package rfctime
 
 import (
 	"encoding/json"
+	"errors"
+	"fmt"
+	"go.mongodb.org/mongo-driver/bson"
+	"go.mongodb.org/mongo-driver/bson/bsoncodec"
+	"go.mongodb.org/mongo-driver/bson/bsonrw"
+	"go.mongodb.org/mongo-driver/bson/bsontype"
+	"reflect"
 	"strconv"
 	"time"
 )
@@ -59,6 +66,63 @@ func (t *UnixMilliTime) UnmarshalText(data []byte) error {
 	return nil
 }
 
+func (t *UnixMilliTime) UnmarshalBSONValue(bt bsontype.Type, data []byte) error {
+	if bt == bson.TypeNull {
+		// we can't set nil in UnmarshalBSONValue (so we use default(struct))
+		// Use mongoext.CreateGoExtBsonRegistry if you need to unmarsh pointer values
+		// https://stackoverflow.com/questions/75167597
+		// https://jira.mongodb.org/browse/GODRIVER-2252
+		*t = UnixMilliTime{}
+		return nil
+	}
+	if bt != bson.TypeDateTime {
+		return errors.New(fmt.Sprintf("cannot unmarshal %v into UnixMilliTime", bt))
+	}
+	var tt time.Time
+	err := bson.RawValue{Type: bt, Value: data}.Unmarshal(&tt)
+	if err != nil {
+		return err
+	}
+	*t = UnixMilliTime(tt)
+	return nil
+}
+
+func (t UnixMilliTime) MarshalBSONValue() (bsontype.Type, []byte, error) {
+	return bson.MarshalValue(time.Time(t))
+}
+
+func (t UnixMilliTime) DecodeValue(dc bsoncodec.DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
+	if val.Kind() == reflect.Ptr && val.IsNil() {
+		if !val.CanSet() {
+			return errors.New("ValueUnmarshalerDecodeValue")
+		}
+		val.Set(reflect.New(val.Type().Elem()))
+	}
+
+	tp, src, err := bsonrw.Copier{}.CopyValueToBytes(vr)
+	if err != nil {
+		return err
+	}
+
+	if val.Kind() == reflect.Ptr && len(src) == 0 {
+		val.Set(reflect.Zero(val.Type()))
+		return nil
+	}
+
+	err = t.UnmarshalBSONValue(tp, src)
+	if err != nil {
+		return err
+	}
+
+	if val.Kind() == reflect.Ptr {
+		val.Set(reflect.ValueOf(&t))
+	} else {
+		val.Set(reflect.ValueOf(t))
+	}
+
+	return nil
+}
+
 func (t UnixMilliTime) Serialize() string {
 	return strconv.FormatInt(t.Time().UnixMilli(), 10)
 }

rfctime/unixNano.go

@@ -2,6 +2,13 @@ package rfctime
 
 import (
 	"encoding/json"
+	"errors"
+	"fmt"
+	"go.mongodb.org/mongo-driver/bson"
+	"go.mongodb.org/mongo-driver/bson/bsoncodec"
+	"go.mongodb.org/mongo-driver/bson/bsonrw"
+	"go.mongodb.org/mongo-driver/bson/bsontype"
+	"reflect"
 	"strconv"
 	"time"
 )
@@ -59,6 +66,63 @@ func (t *UnixNanoTime) UnmarshalText(data []byte) error {
 	return nil
 }
 
+func (t *UnixNanoTime) UnmarshalBSONValue(bt bsontype.Type, data []byte) error {
+	if bt == bson.TypeNull {
+		// we can't set nil in UnmarshalBSONValue (so we use default(struct))
+		// Use mongoext.CreateGoExtBsonRegistry if you need to unmarsh pointer values
+		// https://stackoverflow.com/questions/75167597
+		// https://jira.mongodb.org/browse/GODRIVER-2252
+		*t = UnixNanoTime{}
+		return nil
+	}
+	if bt != bson.TypeDateTime {
+		return errors.New(fmt.Sprintf("cannot unmarshal %v into UnixNanoTime", bt))
+	}
+	var tt time.Time
+	err := bson.RawValue{Type: bt, Value: data}.Unmarshal(&tt)
+	if err != nil {
+		return err
+	}
+	*t = UnixNanoTime(tt)
+	return nil
+}
+
+func (t UnixNanoTime) MarshalBSONValue() (bsontype.Type, []byte, error) {
+	return bson.MarshalValue(time.Time(t))
+}
+
+func (t UnixNanoTime) DecodeValue(dc bsoncodec.DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
+	if val.Kind() == reflect.Ptr && val.IsNil() {
+		if !val.CanSet() {
+			return errors.New("ValueUnmarshalerDecodeValue")
+		}
+		val.Set(reflect.New(val.Type().Elem()))
+	}
+
+	tp, src, err := bsonrw.Copier{}.CopyValueToBytes(vr)
+	if err != nil {
+		return err
+	}
+
+	if val.Kind() == reflect.Ptr && len(src) == 0 {
+		val.Set(reflect.Zero(val.Type()))
+		return nil
+	}
+
+	err = t.UnmarshalBSONValue(tp, src)
+	if err != nil {
+		return err
+	}
+
+	if val.Kind() == reflect.Ptr {
+		val.Set(reflect.ValueOf(&t))
+	} else {
+		val.Set(reflect.ValueOf(t))
+	}
+
+	return nil
+}
+
 func (t UnixNanoTime) Serialize() string {
 	return strconv.FormatInt(t.Time().UnixNano(), 10)
 }

sq/converter.go

@@ -4,17 +4,11 @@ import (
 	"errors"
 	"fmt"
 	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"gogs.mikescher.com/BlackForestBytes/goext/rfctime"
+	"reflect"
 	"time"
 )
 
-//TODO UNFINISHED
-// this is not finished
-// idea was that we can register converter in the database struct
-// they get inherited from the transactions
-// and when marshallingunmarshaling (sq.Query | sq.QueryAll)
-// or marshaling (sq.InsertSingle)
-// the types get converter automatically...
-
 type DBTypeConverter interface {
 	ModelTypeString() string
 	DBTypeString() string
@@ -40,16 +34,46 @@ var ConverterTimeToUnixMillis = NewDBTypeConverter[time.Time, int64](func(v time
 	return time.UnixMilli(v), nil
 })
 
-var ConverterOptTimeToUnixMillis = NewDBTypeConverter[*time.Time, *int64](func(v *time.Time) (*int64, error) {
-	if v == nil {
-		return nil, nil
+var ConverterRFCUnixMilliTimeToUnixMillis = NewDBTypeConverter[rfctime.UnixMilliTime, int64](func(v rfctime.UnixMilliTime) (int64, error) {
+	return v.UnixMilli(), nil
+}, func(v int64) (rfctime.UnixMilliTime, error) {
+	return rfctime.NewUnixMilli(time.UnixMilli(v)), nil
+})
+
+var ConverterRFCUnixNanoTimeToUnixNanos = NewDBTypeConverter[rfctime.UnixNanoTime, int64](func(v rfctime.UnixNanoTime) (int64, error) {
+	return v.UnixNano(), nil
+}, func(v int64) (rfctime.UnixNanoTime, error) {
+	return rfctime.NewUnixNano(time.Unix(0, v)), nil
+})
+
+var ConverterRFCUnixTimeToUnixSeconds = NewDBTypeConverter[rfctime.UnixTime, int64](func(v rfctime.UnixTime) (int64, error) {
+	return v.Unix(), nil
+}, func(v int64) (rfctime.UnixTime, error) {
+	return rfctime.NewUnix(time.Unix(v, 0)), nil
+})
+
+// ConverterRFC339TimeToString
+// Does not really use RFC339 - but sqlite does not understand timezones and the `T` delimiter
+var ConverterRFC339TimeToString = NewDBTypeConverter[rfctime.RFC3339Time, string](func(v rfctime.RFC3339Time) (string, error) {
+	return v.Time().In(time.UTC).Format("2006-01-02 15:04:05"), nil
+}, func(v string) (rfctime.RFC3339Time, error) {
+	t, err := time.Parse("2006-01-02 15:04:05", v)
+	if err != nil {
+		return rfctime.RFC3339Time{}, err
 	}
-	return langext.Ptr(v.UnixMilli()), nil
-}, func(v *int64) (*time.Time, error) {
-	if v == nil {
-		return nil, nil
+	return rfctime.NewRFC3339(t), nil
+})
+
+// ConverterRFC339NanoTimeToString
+// Does not really use RFC339 - but sqlite does not understand timezones and the `T` delimiter
+var ConverterRFC339NanoTimeToString = NewDBTypeConverter[rfctime.RFC3339NanoTime, string](func(v rfctime.RFC3339NanoTime) (string, error) {
+	return v.Time().In(time.UTC).Format("2006-01-02 15:04:05.999999999"), nil
+}, func(v string) (rfctime.RFC3339NanoTime, error) {
+	t, err := time.ParseInLocation("2006-01-02 15:04:05.999999999", v, time.UTC)
+	if err != nil {
+		return rfctime.RFC3339NanoTime{}, err
 	}
-	return langext.Ptr(time.UnixMilli(*v)), nil
+	return rfctime.NewRFC3339Nano(t), nil
 })
 
 type dbTypeConverterImpl[TModelData any, TDBData any] struct {
@@ -89,3 +113,36 @@ func NewDBTypeConverter[TModelData any, TDBData any](todb func(v TModelData) (TD
 		tomodel:         tomodel,
 	}
 }
+
+func convertValueToDB(q Queryable, value any) (any, error) {
+	modelTypeStr := fmt.Sprintf("%T", value)
+
+	for _, conv := range q.ListConverter() {
+		if conv.ModelTypeString() == modelTypeStr {
+			return conv.ModelToDB(value)
+		}
+	}
+
+	if value != nil && reflect.TypeOf(value).Kind() == reflect.Ptr {
+		vof := reflect.ValueOf(value)
+		if vof.IsNil() {
+			return nil, nil
+		} else {
+			return convertValueToDB(q, vof.Elem().Interface())
+		}
+	}
+
+	return value, nil
+}
+
+func convertValueToModel(q Queryable, value any, destinationType string) (any, error) {
+	dbTypeString := fmt.Sprintf("%T", value)
+
+	for _, conv := range q.ListConverter() {
+		if conv.ModelTypeString() == destinationType && conv.DBTypeString() == dbTypeString {
+			return conv.DBToModel(value)
+		}
+	}
+
+	return value, nil
+}

sq/database.go

@@ -4,16 +4,19 @@ import (
 	"context"
 	"database/sql"
 	"github.com/jmoiron/sqlx"
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
 	"sync"
 )
 
 type DB interface {
-	Exec(ctx context.Context, sql string, prep PP) (sql.Result, error)
-	Query(ctx context.Context, sql string, prep PP) (*sqlx.Rows, error)
+	Queryable
+
 	Ping(ctx context.Context) error
 	BeginTransaction(ctx context.Context, iso sql.IsolationLevel) (Tx, error)
 	AddListener(listener Listener)
 	Exit() error
+	RegisterConverter(DBTypeConverter)
+	RegisterDefaultConverter()
 }
 
 type database struct {
@@ -21,6 +24,7 @@ type database struct {
 	txctr uint16
 	lock  sync.Mutex
 	lstr  []Listener
+	conv  []DBTypeConverter
 }
 
 func NewDB(db *sqlx.DB) DB {
@@ -120,9 +124,28 @@ func (db *database) BeginTransaction(ctx context.Context, iso sql.IsolationLevel
 		v.PostTxBegin(txid, err)
 	}
 
-	return NewTransaction(xtx, txid, db.lstr), nil
+	return NewTransaction(xtx, txid, db), nil
 }
 
 func (db *database) Exit() error {
 	return db.db.Close()
 }
+
+func (db *database) ListConverter() []DBTypeConverter {
+	return db.conv
+}
+
+func (db *database) RegisterConverter(conv DBTypeConverter) {
+	db.conv = langext.ArrFilter(db.conv, func(v DBTypeConverter) bool { return v.ModelTypeString() != conv.ModelTypeString() })
+	db.conv = append(db.conv, conv)
+}
+
+func (db *database) RegisterDefaultConverter() {
+	db.RegisterConverter(ConverterBoolToBit)
+	db.RegisterConverter(ConverterTimeToUnixMillis)
+	db.RegisterConverter(ConverterRFCUnixMilliTimeToUnixMillis)
+	db.RegisterConverter(ConverterRFCUnixNanoTimeToUnixNanos)
+	db.RegisterConverter(ConverterRFCUnixTimeToUnixSeconds)
+	db.RegisterConverter(ConverterRFC339TimeToString)
+	db.RegisterConverter(ConverterRFC339NanoTimeToString)
+}

sq/hasher.go

@@ -13,7 +13,9 @@ import (
 	"strings"
 )
 
-func HashSqliteSchema(ctx context.Context, schemaStr string) (string, error) {
+// HashMattnSqliteSchema
+// use if github.com/glebarez/go-sqlite
+func HashMattnSqliteSchema(ctx context.Context, schemaStr string) (string, error) {
 	dbdir := os.TempDir()
 	dbfile1 := filepath.Join(dbdir, langext.MustHexUUID()+".sqlite3")
 
@@ -39,6 +41,34 @@ func HashSqliteSchema(ctx context.Context, schemaStr string) (string, error) {
 	return HashSqliteDatabase(ctx, db)
 }
 
+// HashGoSqliteSchema
+// use if mattn/go-sqlite3
+func HashGoSqliteSchema(ctx context.Context, schemaStr string) (string, error) {
+	dbdir := os.TempDir()
+	dbfile1 := filepath.Join(dbdir, langext.MustHexUUID()+".sqlite3")
+
+	err := os.MkdirAll(dbdir, os.ModePerm)
+	if err != nil {
+		return "", err
+	}
+
+	url := fmt.Sprintf("file:%s?_pragma=journal_mode(%s)&_pragma=timeout(%d)&_pragma=foreign_keys(%s)&_pragma=busy_timeout(%d)", dbfile1, "DELETE", 1000, "true", 1000)
+
+	xdb, err := sqlx.Open("sqlite", url)
+	if err != nil {
+		return "", err
+	}
+
+	db := NewDB(xdb)
+
+	_, err = db.Exec(ctx, schemaStr, PP{})
+	if err != nil {
+		return "", err
+	}
+
+	return HashSqliteDatabase(ctx, db)
+}
+
 func HashSqliteDatabase(ctx context.Context, db Queryable) (string, error) {
 	ss, err := CreateSqliteDatabaseSchemaString(ctx, db)
 	if err != nil {
@@ -91,7 +121,7 @@ func CreateSqliteDatabaseSchemaString(ctx context.Context, db Queryable) (string
 	if err != nil {
 		return "", err
 	}
-	tableList, err := ScanAll[tabInfo](rowsTableList, SModeFast, Unsafe, true)
+	tableList, err := ScanAll[tabInfo](ctx, db, rowsTableList, SModeFast, Unsafe, true)
 	if err != nil {
 		return "", err
 	}
@@ -113,7 +143,7 @@ func CreateSqliteDatabaseSchemaString(ctx context.Context, db Queryable) (string
 				return "", err
 			}
 
-			columnList, err := ScanAll[colInfo](rowsColumnList, SModeFast, Unsafe, true)
+			columnList, err := ScanAll[colInfo](ctx, db, rowsColumnList, SModeFast, Unsafe, true)
 			if err != nil {
 				return "", err
 			}
@@ -128,7 +158,7 @@ func CreateSqliteDatabaseSchemaString(ctx context.Context, db Queryable) (string
 			if err != nil {
 				return "", err
 			}
-			idxList, err := ScanAll[idxInfo](rowsIdxList, SModeFast, Unsafe, true)
+			idxList, err := ScanAll[idxInfo](ctx, db, rowsIdxList, SModeFast, Unsafe, true)
 			if err != nil {
 				return "", err
 			}
@@ -143,7 +173,7 @@ func CreateSqliteDatabaseSchemaString(ctx context.Context, db Queryable) (string
 			if err != nil {
 				return "", err
 			}
-			fkyList, err := ScanAll[fkyInfo](rowsIdxList, SModeFast, Unsafe, true)
+			fkyList, err := ScanAll[fkyInfo](ctx, db, rowsIdxList, SModeFast, Unsafe, true)
 			if err != nil {
 				return "", err
 			}

sq/queryable.go

@@ -9,4 +9,5 @@ import (
 type Queryable interface {
 	Exec(ctx context.Context, sql string, prep PP) (sql.Result, error)
 	Query(ctx context.Context, sql string, prep PP) (*sqlx.Rows, error)
+	ListConverter() []DBTypeConverter
 }

sq/scanner.go

@@ -13,8 +13,8 @@ import (
 type StructScanMode string
 
 const (
-	SModeFast     StructScanMode = "FAST"
-	SModeExtended StructScanMode = "EXTENDED"
+	SModeFast     StructScanMode = "FAST"     // Use default sq.Scan, does not work with joined/resolved types and/or custom value converter
+	SModeExtended StructScanMode = "EXTENDED" // Fully featured perhaps (?) a tiny bit slower - default
 )
 
 type StructScanSafety string
@@ -51,7 +51,13 @@ func InsertSingle[TData any](ctx context.Context, q Queryable, tableName string,
 
 		columns = append(columns, "\""+columnName+"\"")
 		params = append(params, ":"+paramkey)
-		pp[paramkey] = rvfield.Interface()
+
+		val, err := convertValueToDB(q, rvfield.Interface())
+		if err != nil {
+			return nil, err
+		}
+
+		pp[paramkey] = val
 
 	}
 
@@ -71,7 +77,7 @@ func QuerySingle[TData any](ctx context.Context, q Queryable, sql string, pp PP,
 		return *new(TData), err
 	}
 
-	data, err := ScanSingle[TData](rows, mode, sec, true)
+	data, err := ScanSingle[TData](ctx, q, rows, mode, sec, true)
 	if err != nil {
 		return *new(TData), err
 	}
@@ -85,7 +91,7 @@ func QueryAll[TData any](ctx context.Context, q Queryable, sql string, pp PP, mo
 		return nil, err
 	}
 
-	data, err := ScanAll[TData](rows, mode, sec, true)
+	data, err := ScanAll[TData](ctx, q, rows, mode, sec, true)
 	if err != nil {
 		return nil, err
 	}
@@ -93,7 +99,7 @@ func QueryAll[TData any](ctx context.Context, q Queryable, sql string, pp PP, mo
 	return data, nil
 }
 
-func ScanSingle[TData any](rows *sqlx.Rows, mode StructScanMode, sec StructScanSafety, close bool) (TData, error) {
+func ScanSingle[TData any](ctx context.Context, q Queryable, rows *sqlx.Rows, mode StructScanMode, sec StructScanSafety, close bool) (TData, error) {
 	if rows.Next() {
 		var strscan *StructScanner
 
@@ -123,7 +129,7 @@ func ScanSingle[TData any](rows *sqlx.Rows, mode StructScanMode, sec StructScanS
 				return *new(TData), err
 			}
 		} else if mode == SModeExtended {
-			err := strscan.StructScanExt(&data)
+			err := strscan.StructScanExt(q, &data)
 			if err != nil {
 				return *new(TData), err
 			}
@@ -149,6 +155,10 @@ func ScanSingle[TData any](rows *sqlx.Rows, mode StructScanMode, sec StructScanS
 			return *new(TData), err
 		}
 
+		if err := ctx.Err(); err != nil {
+			return *new(TData), err
+		}
+
 		return data, nil
 
 	} else {
@@ -159,7 +169,7 @@ func ScanSingle[TData any](rows *sqlx.Rows, mode StructScanMode, sec StructScanS
 	}
 }
 
-func ScanAll[TData any](rows *sqlx.Rows, mode StructScanMode, sec StructScanSafety, close bool) ([]TData, error) {
+func ScanAll[TData any](ctx context.Context, q Queryable, rows *sqlx.Rows, mode StructScanMode, sec StructScanSafety, close bool) ([]TData, error) {
 	var strscan *StructScanner
 
 	if sec == Safe {
@@ -182,6 +192,11 @@ func ScanAll[TData any](rows *sqlx.Rows, mode StructScanMode, sec StructScanSafe
 
 	res := make([]TData, 0)
 	for rows.Next() {
+
+		if err := ctx.Err(); err != nil {
+			return nil, err
+		}
+
 		if mode == SModeFast {
 			var data TData
 			err := strscan.StructScanBase(&data)
@@ -191,7 +206,7 @@ func ScanAll[TData any](rows *sqlx.Rows, mode StructScanMode, sec StructScanSafe
 			res = append(res, data)
 		} else if mode == SModeExtended {
 			var data TData
-			err := strscan.StructScanExt(&data)
+			err := strscan.StructScanExt(q, &data)
 			if err != nil {
 				return nil, err
 			}

sq/sq_test.go

@@ -0,0 +1,89 @@
+package sq
+
+import (
+	"context"
+	"fmt"
+	"github.com/jmoiron/sqlx"
+	"github.com/mattn/go-sqlite3"
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"gogs.mikescher.com/BlackForestBytes/goext/rfctime"
+	"gogs.mikescher.com/BlackForestBytes/goext/tst"
+	"os"
+	"path/filepath"
+	"testing"
+	"time"
+)
+
+func TestTypeConverter1(t *testing.T) {
+	type RequestData struct {
+		ID        string    `db:"id"`
+		Timestamp time.Time `db:"timestamp"`
+	}
+
+	ctx := context.Background()
+
+	dbdir := t.TempDir()
+	dbfile1 := filepath.Join(dbdir, langext.MustHexUUID()+".sqlite3")
+
+	sqlite3.Version() // ensure loaded
+
+	tst.AssertNoErr(t, os.MkdirAll(dbdir, os.ModePerm))
+
+	url := fmt.Sprintf("file:%s?_journal=%s&_timeout=%d&_fk=%s&_busy_timeout=%d", dbfile1, "DELETE", 1000, "true", 1000)
+
+	xdb := tst.Must(sqlx.Open("sqlite3", url))(t)
+
+	db := NewDB(xdb)
+	db.RegisterDefaultConverter()
+
+	_, err := db.Exec(ctx, "CREATE TABLE `requests` ( id TEXT NOT NULL, timestamp INTEGER NOT NULL, PRIMARY KEY (id) ) STRICT", PP{})
+	tst.AssertNoErr(t, err)
+
+	_, err = InsertSingle(ctx, db, "requests", RequestData{
+		ID:        "001",
+		Timestamp: time.Date(2000, 06, 15, 12, 0, 0, 0, time.UTC),
+	})
+	tst.AssertNoErr(t, err)
+}
+
+func TestTypeConverter2(t *testing.T) {
+	type RequestData struct {
+		ID        string                `db:"id"`
+		Timestamp rfctime.UnixMilliTime `db:"timestamp"`
+	}
+
+	ctx := context.Background()
+
+	dbdir := t.TempDir()
+	dbfile1 := filepath.Join(dbdir, langext.MustHexUUID()+".sqlite3")
+
+	sqlite3.Version() // ensure loaded
+
+	tst.AssertNoErr(t, os.MkdirAll(dbdir, os.ModePerm))
+
+	url := fmt.Sprintf("file:%s?_journal=%s&_timeout=%d&_fk=%s&_busy_timeout=%d", dbfile1, "DELETE", 1000, "true", 1000)
+
+	xdb := tst.Must(sqlx.Open("sqlite3", url))(t)
+
+	db := NewDB(xdb)
+	db.RegisterDefaultConverter()
+
+	_, err := db.Exec(ctx, "CREATE TABLE `requests` ( id TEXT NOT NULL, timestamp INTEGER NOT NULL, PRIMARY KEY (id) ) STRICT", PP{})
+	tst.AssertNoErr(t, err)
+
+	t0 := rfctime.NewUnixMilli(time.Date(2012, 03, 01, 16, 0, 0, 0, time.UTC))
+
+	_, err = InsertSingle(ctx, db, "requests", RequestData{
+		ID:        "002",
+		Timestamp: t0,
+	})
+	tst.AssertNoErr(t, err)
+
+	r, err := QuerySingle[RequestData](ctx, db, "SELECT * FROM requests WHERE id = '002'", PP{}, SModeExtended, Safe)
+	tst.AssertNoErr(t, err)
+
+	fmt.Printf("%+v\n", r)
+
+	tst.AssertEqual(t, "002", r.ID)
+	tst.AssertEqual(t, t0.UnixNano(), r.Timestamp.UnixNano())
+}

sq/structscanner.go

@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"github.com/jmoiron/sqlx"
 	"github.com/jmoiron/sqlx/reflectx"
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
 	"reflect"
 )
 
@@ -15,9 +16,10 @@ type StructScanner struct {
 	Mapper *reflectx.Mapper
 	unsafe bool
 
-	fields  [][]int
-	values  []any
-	columns []string
+	fields    [][]int
+	values    []any
+	converter []DBTypeConverter
+	columns   []string
 }
 
 func NewStructScanner(rows *sqlx.Rows, unsafe bool) *StructScanner {
@@ -47,13 +49,15 @@ func (r *StructScanner) Start(dest any) error {
 		return fmt.Errorf("missing destination name %s in %T", columns[f], dest)
 	}
 	r.values = make([]interface{}, len(columns))
+	r.converter = make([]DBTypeConverter, len(columns))
 
 	return nil
 }
 
 // StructScanExt forked from github.com/jmoiron/sqlx@v1.3.5/sqlx.go
-// does also wok with nullabel structs (from LEFT JOIN's)
-func (r *StructScanner) StructScanExt(dest any) error {
+// does also work with nullabel structs (from LEFT JOIN's)
+// does also work with custom value converters
+func (r *StructScanner) StructScanExt(q Queryable, dest any) error {
 	v := reflect.ValueOf(dest)
 
 	if v.Kind() != reflect.Ptr {
@@ -64,7 +68,7 @@ func (r *StructScanner) StructScanExt(dest any) error {
 
 	v = v.Elem()
 
-	err := fieldsByTraversalExtended(v, r.fields, r.values)
+	err := fieldsByTraversalExtended(q, v, r.fields, r.values, r.converter)
 	if err != nil {
 		return err
 	}
@@ -131,7 +135,6 @@ func (r *StructScanner) StructScanExt(dest any) error {
 
 		val1 := reflect.ValueOf(r.values[i])
 		val2 := val1.Elem()
-		val3 := val2.Elem()
 
 		if val2.IsNil() {
 			if f.Kind() != reflect.Pointer {
@@ -140,7 +143,16 @@ func (r *StructScanner) StructScanExt(dest any) error {
 
 			f.Set(reflect.Zero(f.Type())) // set to nil
 		} else {
-			f.Set(val3)
+			if r.converter[i] != nil {
+				val3 := val2.Elem().Interface()
+				conv3, err := r.converter[i].DBToModel(val3)
+				if err != nil {
+					return err
+				}
+				f.Set(reflect.ValueOf(conv3))
+			} else {
+				f.Set(val2.Elem())
+			}
 		}
 
 	}
@@ -172,7 +184,7 @@ func (r *StructScanner) StructScanBase(dest any) error {
 }
 
 // fieldsByTraversal forked from github.com/jmoiron/sqlx@v1.3.5/sqlx.go
-func fieldsByTraversalExtended(v reflect.Value, traversals [][]int, values []interface{}) error {
+func fieldsByTraversalExtended(q Queryable, v reflect.Value, traversals [][]int, values []interface{}, converter []DBTypeConverter) error {
 	v = reflect.Indirect(v)
 	if v.Kind() != reflect.Struct {
 		return errors.New("argument not a struct")
@@ -185,7 +197,23 @@ func fieldsByTraversalExtended(v reflect.Value, traversals [][]int, values []int
 		}
 		f := reflectx.FieldByIndexes(v, traversal)
 
-		values[i] = reflect.New(reflect.PointerTo(f.Type())).Interface()
+		typeStr := f.Type().String()
+
+		foundConverter := false
+		for _, conv := range q.ListConverter() {
+			if conv.ModelTypeString() == typeStr {
+				_v := langext.Ptr[any](nil)
+				values[i] = _v
+				foundConverter = true
+				converter[i] = conv
+				break
+			}
+		}
+
+		if !foundConverter {
+			values[i] = reflect.New(reflect.PointerTo(f.Type())).Interface()
+			converter[i] = nil
+		}
 	}
 	return nil
 }

sq/transaction.go

@@ -17,35 +17,35 @@ const (
 )
 
 type Tx interface {
+	Queryable
+
 	Rollback() error
 	Commit() error
 	Status() TxStatus
-	Exec(ctx context.Context, sql string, prep PP) (sql.Result, error)
-	Query(ctx context.Context, sql string, prep PP) (*sqlx.Rows, error)
 }
 
 type transaction struct {
 	tx       *sqlx.Tx
 	id       uint16
-	lstr     []Listener
 	status   TxStatus
 	execCtr  int
 	queryCtr int
+	db       *database
 }
 
-func NewTransaction(xtx *sqlx.Tx, txid uint16, lstr []Listener) Tx {
+func NewTransaction(xtx *sqlx.Tx, txid uint16, db *database) Tx {
 	return &transaction{
 		tx:       xtx,
 		id:       txid,
-		lstr:     lstr,
 		status:   TxStatusInitial,
 		execCtr:  0,
 		queryCtr: 0,
+		db:       db,
 	}
 }
 
 func (tx *transaction) Rollback() error {
-	for _, v := range tx.lstr {
+	for _, v := range tx.db.lstr {
 		err := v.PreTxRollback(tx.id)
 		if err != nil {
 			return err
@@ -58,7 +58,7 @@ func (tx *transaction) Rollback() error {
 		tx.status = TxStatusRollback
 	}
 
-	for _, v := range tx.lstr {
+	for _, v := range tx.db.lstr {
 		v.PostTxRollback(tx.id, result)
 	}
 
@@ -66,7 +66,7 @@ func (tx *transaction) Rollback() error {
 }
 
 func (tx *transaction) Commit() error {
-	for _, v := range tx.lstr {
+	for _, v := range tx.db.lstr {
 		err := v.PreTxCommit(tx.id)
 		if err != nil {
 			return err
@@ -79,7 +79,7 @@ func (tx *transaction) Commit() error {
 		tx.status = TxStatusComitted
 	}
 
-	for _, v := range tx.lstr {
+	for _, v := range tx.db.lstr {
 		v.PostTxRollback(tx.id, result)
 	}
 
@@ -88,7 +88,7 @@ func (tx *transaction) Commit() error {
 
 func (tx *transaction) Exec(ctx context.Context, sqlstr string, prep PP) (sql.Result, error) {
 	origsql := sqlstr
-	for _, v := range tx.lstr {
+	for _, v := range tx.db.lstr {
 		err := v.PreExec(ctx, langext.Ptr(tx.id), &sqlstr, &prep)
 		if err != nil {
 			return nil, err
@@ -101,7 +101,7 @@ func (tx *transaction) Exec(ctx context.Context, sqlstr string, prep PP) (sql.Re
 		tx.status = TxStatusActive
 	}
 
-	for _, v := range tx.lstr {
+	for _, v := range tx.db.lstr {
 		v.PostExec(langext.Ptr(tx.id), origsql, sqlstr, prep)
 	}
 
@@ -113,7 +113,7 @@ func (tx *transaction) Exec(ctx context.Context, sqlstr string, prep PP) (sql.Re
 
 func (tx *transaction) Query(ctx context.Context, sqlstr string, prep PP) (*sqlx.Rows, error) {
 	origsql := sqlstr
-	for _, v := range tx.lstr {
+	for _, v := range tx.db.lstr {
 		err := v.PreQuery(ctx, langext.Ptr(tx.id), &sqlstr, &prep)
 		if err != nil {
 			return nil, err
@@ -126,7 +126,7 @@ func (tx *transaction) Query(ctx context.Context, sqlstr string, prep PP) (*sqlx
 		tx.status = TxStatusActive
 	}
 
-	for _, v := range tx.lstr {
+	for _, v := range tx.db.lstr {
 		v.PostQuery(langext.Ptr(tx.id), origsql, sqlstr, prep)
 	}
 
@@ -140,6 +140,10 @@ func (tx *transaction) Status() TxStatus {
 	return tx.status
 }
 
+func (tx *transaction) ListConverter() []DBTypeConverter {
+	return tx.db.conv
+}
+
 func (tx *transaction) Traffic() (int, int) {
 	return tx.execCtr, tx.queryCtr
 }

syncext/atomic.go

@@ -1,109 +1,34 @@
 package syncext
 
 import (
-	"context"
-	"gogs.mikescher.com/BlackForestBytes/goext/langext"
 	"sync"
-	"time"
 )
 
-type AtomicBool struct {
-	v        bool
-	listener map[string]chan bool
-	lock     sync.Mutex
+type Atomic[T any] struct {
+	v    T
+	lock sync.RWMutex
 }
 
-func NewAtomicBool(value bool) *AtomicBool {
-	return &AtomicBool{
-		v:        value,
-		listener: make(map[string]chan bool),
-		lock:     sync.Mutex{},
+func NewAtomic[T any](value T) *Atomic[T] {
+	return &Atomic[T]{
+		v:    value,
+		lock: sync.RWMutex{},
 	}
 }
 
-func (a *AtomicBool) Get() bool {
-	a.lock.Lock()
-	defer a.lock.Unlock()
+func (a *Atomic[T]) Get() T {
+	a.lock.RLock()
+	defer a.lock.RUnlock()
 	return a.v
 }
 
-func (a *AtomicBool) Set(value bool) {
+func (a *Atomic[T]) Set(value T) T {
 	a.lock.Lock()
 	defer a.lock.Unlock()
 
+	oldValue := a.v
+
 	a.v = value
 
-	for k, v := range a.listener {
-		select {
-		case v <- value:
-			// message sent
-		default:
-			// no receiver on channel
-			delete(a.listener, k)
-		}
-	}
-}
-
-func (a *AtomicBool) Wait(waitFor bool) {
-	_ = a.WaitWithContext(context.Background(), waitFor)
-}
-
-func (a *AtomicBool) WaitWithTimeout(timeout time.Duration, waitFor bool) error {
-	ctx, cancel := context.WithTimeout(context.Background(), timeout)
-	defer cancel()
-	return a.WaitWithContext(ctx, waitFor)
-}
-
-func (a *AtomicBool) WaitWithContext(ctx context.Context, waitFor bool) error {
-	if err := ctx.Err(); err != nil {
-		return err
-	}
-
-	if a.Get() == waitFor {
-		return nil
-	}
-
-	uuid, _ := langext.NewHexUUID()
-
-	waitchan := make(chan bool)
-
-	a.lock.Lock()
-	a.listener[uuid] = waitchan
-	a.lock.Unlock()
-	defer func() {
-		a.lock.Lock()
-		delete(a.listener, uuid)
-		a.lock.Unlock()
-	}()
-
-	for {
-		if err := ctx.Err(); err != nil {
-			return err
-		}
-
-		timeOut := 1024 * time.Millisecond
-
-		if dl, ok := ctx.Deadline(); ok {
-			timeOutMax := dl.Sub(time.Now())
-			if timeOutMax <= 0 {
-				timeOut = 0
-			} else if 0 < timeOutMax && timeOutMax < timeOut {
-				timeOut = timeOutMax
-			}
-		}
-
-		if v, ok := ReadChannelWithTimeout(waitchan, timeOut); ok {
-			if v == waitFor {
-				return nil
-			}
-		} else {
-			if err := ctx.Err(); err != nil {
-				return err
-			}
-
-			if a.Get() == waitFor {
-				return nil
-			}
-		}
-	}
+	return oldValue
 }

syncext/bool.go

@@ -0,0 +1,113 @@
+package syncext
+
+import (
+	"context"
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"sync"
+	"time"
+)
+
+type AtomicBool struct {
+	v        bool
+	listener map[string]chan bool
+	lock     sync.Mutex
+}
+
+func NewAtomicBool(value bool) *AtomicBool {
+	return &AtomicBool{
+		v:        value,
+		listener: make(map[string]chan bool),
+		lock:     sync.Mutex{},
+	}
+}
+
+func (a *AtomicBool) Get() bool {
+	a.lock.Lock()
+	defer a.lock.Unlock()
+	return a.v
+}
+
+func (a *AtomicBool) Set(value bool) bool {
+	a.lock.Lock()
+	defer a.lock.Unlock()
+
+	oldValue := a.v
+
+	a.v = value
+
+	for k, v := range a.listener {
+		select {
+		case v <- value:
+			// message sent
+		default:
+			// no receiver on channel
+			delete(a.listener, k)
+		}
+	}
+
+	return oldValue
+}
+
+func (a *AtomicBool) Wait(waitFor bool) {
+	_ = a.WaitWithContext(context.Background(), waitFor)
+}
+
+func (a *AtomicBool) WaitWithTimeout(timeout time.Duration, waitFor bool) error {
+	ctx, cancel := context.WithTimeout(context.Background(), timeout)
+	defer cancel()
+	return a.WaitWithContext(ctx, waitFor)
+}
+
+func (a *AtomicBool) WaitWithContext(ctx context.Context, waitFor bool) error {
+	if err := ctx.Err(); err != nil {
+		return err
+	}
+
+	if a.Get() == waitFor {
+		return nil
+	}
+
+	uuid, _ := langext.NewHexUUID()
+
+	waitchan := make(chan bool)
+
+	a.lock.Lock()
+	a.listener[uuid] = waitchan
+	a.lock.Unlock()
+	defer func() {
+		a.lock.Lock()
+		delete(a.listener, uuid)
+		a.lock.Unlock()
+	}()
+
+	for {
+		if err := ctx.Err(); err != nil {
+			return err
+		}
+
+		timeOut := 1024 * time.Millisecond
+
+		if dl, ok := ctx.Deadline(); ok {
+			timeOutMax := dl.Sub(time.Now())
+			if timeOutMax <= 0 {
+				timeOut = 0
+			} else if 0 < timeOutMax && timeOutMax < timeOut {
+				timeOut = timeOutMax
+			}
+		}
+
+		if v, ok := ReadChannelWithTimeout(waitchan, timeOut); ok {
+			if v == waitFor {
+				return nil
+			}
+		} else {
+			if err := ctx.Err(); err != nil {
+				return err
+			}
+
+			if a.Get() == waitFor {
+				return nil
+			}
+		}
+	}
+}

timeext/calendarweek.go

@@ -0,0 +1,28 @@
+package timeext
+
+import "time"
+
+func WeekStart(year, week int) time.Time {
+
+	// https://stackoverflow.com/a/52303730/1761622
+
+	// Start from the middle of the year:
+	t := time.Date(year, 7, 1, 0, 0, 0, 0, time.UTC)
+
+	// Roll back to Monday:
+	if wd := t.Weekday(); wd == time.Sunday {
+		t = t.AddDate(0, 0, -6)
+	} else {
+		t = t.AddDate(0, 0, -int(wd)+1)
+	}
+
+	// Difference in weeks:
+	_, w := t.ISOWeek()
+	t = t.AddDate(0, 0, (week-w)*7)
+
+	return t
+}
+
+func WeekEnd(year, week int) time.Time {
+	return WeekStart(year, week).AddDate(0, 0, 7).Add(time.Duration(-1))
+}

timeext/calendarweek_test.go

@@ -0,0 +1,25 @@
+package timeext
+
+import (
+	"gogs.mikescher.com/BlackForestBytes/goext/tst"
+	"testing"
+	"time"
+)
+
+func TestWeekStart(t *testing.T) {
+
+	tst.AssertEqual(t, WeekStart(2018, 1).Format(time.RFC3339Nano), "2018-01-01T00:00:00Z")
+	tst.AssertEqual(t, WeekStart(2018, 2).Format(time.RFC3339Nano), "2018-01-08T00:00:00Z")
+	tst.AssertEqual(t, WeekStart(2019, 1).Format(time.RFC3339Nano), "2018-12-31T00:00:00Z")
+	tst.AssertEqual(t, WeekStart(2019, 2).Format(time.RFC3339Nano), "2019-01-07T00:00:00Z")
+
+}
+
+func TestWeekEnd(t *testing.T) {
+
+	tst.AssertEqual(t, WeekEnd(2018, 1).Format(time.RFC3339Nano), "2018-01-07T23:59:59.999999999Z")
+	tst.AssertEqual(t, WeekEnd(2018, 2).Format(time.RFC3339Nano), "2018-01-14T23:59:59.999999999Z")
+	tst.AssertEqual(t, WeekEnd(2019, 1).Format(time.RFC3339Nano), "2019-01-06T23:59:59.999999999Z")
+	tst.AssertEqual(t, WeekEnd(2019, 2).Format(time.RFC3339Nano), "2019-01-13T23:59:59.999999999Z")
+
+}

tst/assertions.go

@@ -14,6 +14,20 @@ func AssertEqual[T comparable](t *testing.T, actual T, expected T) {
 	}
 }
 
+func AssertArrayEqual[T comparable](t *testing.T, actual []T, expected []T) {
+	t.Helper()
+	if len(actual) != len(expected) {
+		t.Errorf("values differ: Actual: '%v', Expected: '%v' (len %d <> %d)", actual, expected, len(actual), len(expected))
+		return
+	}
+	for i := 0; i < len(actual); i++ {
+		if actual[i] != expected[i] {
+			t.Errorf("values differ: Actual: '%v', Expected: '%v' (at index %d)", actual, expected, i)
+			return
+		}
+	}
+}
+
 func AssertNotEqual[T comparable](t *testing.T, actual T, expected T) {
 	t.Helper()
 	if actual == expected {
@@ -23,14 +37,32 @@ func AssertNotEqual[T comparable](t *testing.T, actual T, expected T) {
 
 func AssertDeepEqual[T any](t *testing.T, actual T, expected T) {
 	t.Helper()
-	if reflect.DeepEqual(actual, expected) {
+	if !reflect.DeepEqual(actual, expected) {
 		t.Errorf("values differ: Actual: '%v', Expected: '%v'", actual, expected)
 	}
 }
 
+func AssertSetDeepEqual[T any](t *testing.T, actual []T, expected []T) {
+	t.Helper()
+	if len(actual) != len(expected) {
+		t.Errorf("values differ in length: Actual (n=%d): '%v', Expected (n=%d): '%v'", len(actual), actual, len(expected), expected)
+	}
+
+	for _, a := range expected {
+		found := false
+		for _, b := range actual {
+			found = found || reflect.DeepEqual(a, b)
+		}
+		if !found {
+			t.Errorf("values differ: Element '%v' not found. Actual: '%v', Expected: '%v'", a, actual, expected)
+			return
+		}
+	}
+}
+
 func AssertNotDeepEqual[T any](t *testing.T, actual T, expected T) {
 	t.Helper()
-	if !reflect.DeepEqual(actual, expected) {
+	if reflect.DeepEqual(actual, expected) {
 		t.Errorf("values do not differ: Actual: '%v', Expected: '%v'", actual, expected)
 	}
 }

tst/must.go

@@ -0,0 +1,21 @@
+package tst
+
+import (
+	"runtime/debug"
+	"testing"
+)
+
+// Must can b used to AssertNoErr of an (T, err) function
+//
+// Usage:
+//
+// input := "123.8"
+// value := tst.Must(strconv.Atoi(input))(t)
+func Must[T any](v T, anerr error) func(t *testing.T) T {
+	return func(t *testing.T) T {
+		if anerr != nil {
+			t.Error("Function returned an error: " + anerr.Error() + "\n" + string(debug.Stack()))
+		}
+		return v
+	}
+}

wmo/collection.go

@@ -44,6 +44,8 @@ type Coll[TData any] struct {
 	implDataTypeMap     map[reflect.Type]map[string]fullTypeRef                  // dynamic list of fields of TData implementations (only if TData is an interface)
 	customDecoder       *func(ctx context.Context, dec Decodable) (TData, error) // custom decoding function (useful if TData is an interface)
 	isInterfaceDataType bool                                                     // true if TData is an interface (not a struct)
+	unmarshalHooks      []func(d TData) TData                                    // called for every object after unmarshalling
+	extraModPipeline    mongo.Pipeline                                           // appended to pipelines after filter/limit/skip/sort, used for $lookup, $set, $unset, $project, etc
 }
 
 func (c *Coll[TData]) Collection() *mongo.Collection {
@@ -54,14 +56,6 @@ func (c *Coll[TData]) Name() string {
 	return c.coll.Name()
 }
 
-func (c *Coll[TData]) WithDecodeFunc(cdf func(ctx context.Context, dec Decodable) (TData, error), example TData) *Coll[TData] {
-
-	c.EnsureInitializedReflection(example)
-
-	c.customDecoder = langext.Ptr(cdf)
-	return c
-}
-
 func (c *Coll[TData]) Indexes() mongo.IndexView {
 	return c.coll.Indexes()
 }
@@ -74,6 +68,26 @@ func (c *Coll[TData]) Drop(ctx context.Context) error {
 	return nil
 }
 
+func (c *Coll[TData]) WithDecodeFunc(cdf func(ctx context.Context, dec Decodable) (TData, error), example TData) *Coll[TData] {
+
+	c.EnsureInitializedReflection(example)
+
+	c.customDecoder = langext.Ptr(cdf)
+	return c
+}
+
+func (c *Coll[TData]) WithUnmarshalHook(fn func(d TData) TData) *Coll[TData] {
+	c.unmarshalHooks = append(c.unmarshalHooks, fn)
+
+	return c
+}
+
+func (c *Coll[TData]) WithModifyingPipeline(p mongo.Pipeline) *Coll[TData] {
+	c.extraModPipeline = append(c.extraModPipeline, p...)
+
+	return c
+}
+
 func (c *Coll[TData]) createToken(fieldPrimary string, dirPrimary ct.SortDirection, fieldSecondary *string, dirSecondary *ct.SortDirection, lastEntity TData, pageSize *int) (ct.CursorToken, error) {
 
 	valuePrimary, err := c.getFieldValueAsTokenString(lastEntity, fieldPrimary)

wmo/decoding.go

@@ -2,37 +2,39 @@ package wmo
 
 import (
 	"context"
+	"go.mongodb.org/mongo-driver/bson"
 	"gogs.mikescher.com/BlackForestBytes/goext/exerr"
 )
 
 func (c *Coll[TData]) decodeSingle(ctx context.Context, dec Decodable) (TData, error) {
+
+	var res TData
+	var err error
+
 	if c.customDecoder != nil {
-
-		res, err := (*c.customDecoder)(ctx, dec)
+		res, err = (*c.customDecoder)(ctx, dec)
 		if err != nil {
-			return *new(TData), exerr.Wrap(err, "failed to decode single entity with custom-decoder").Type("decoder", *c.customDecoder).Build()
+			return *new(TData), exerr.Wrap(err, "failed to decode single entity with custom-decoder").Type("decoder", *c.customDecoder).NoLog().Build()
 		}
-		return res, nil
-
 	} else {
-
-		var res TData
-
-		err := dec.Decode(&res)
+		err = dec.Decode(&res)
 		if err != nil {
-			return *new(TData), exerr.Wrap(err, "failed to decode single entity").Type("target-type", res).Build()
+			return *new(TData), exerr.Wrap(err, "failed to decode single entity").Type("target-type", res).NoLog().Build()
 		}
-
-		return res, nil
-
 	}
+
+	for _, hook := range c.unmarshalHooks {
+		res = hook(res)
+	}
+
+	return res, nil
 }
 
 func (c *Coll[TData]) decodeAll(ctx context.Context, cursor Cursorable) ([]TData, error) {
+
+	res := make([]TData, 0, cursor.RemainingBatchLength())
+
 	if c.customDecoder != nil {
-
-		res := make([]TData, 0, cursor.RemainingBatchLength())
-
 		for cursor.Next(ctx) {
 			entry, err := (*c.customDecoder)(ctx, cursor)
 			if err != nil {
@@ -40,20 +42,48 @@ func (c *Coll[TData]) decodeAll(ctx context.Context, cursor Cursorable) ([]TData
 			}
 			res = append(res, entry)
 		}
-
-		return res, nil
-
 	} else {
-
-		res := make([]TData, 0, cursor.RemainingBatchLength())
-
 		err := cursor.All(ctx, &res)
 		if err != nil {
 			return nil, exerr.Wrap(err, "failed to batch-decode entity").Type("target-type", res).Build()
 		}
-
-		return res, nil
-
 	}
 
+	for i := 0; i < len(res); i++ {
+		for _, hook := range c.unmarshalHooks {
+			res[i] = hook(res[i])
+		}
+	}
+
+	return res, nil
+
+}
+
+func (c *Coll[TData]) decodeSingleOrRequery(ctx context.Context, dec Decodable) (TData, error) {
+	if c.extraModPipeline == nil {
+
+		// simple case, we can just decode the result and return it
+		return c.decodeSingle(ctx, dec)
+
+	} else {
+
+		// annyoing case, we have a extraModPipeline and need to re-query the document such that the extraModPipeline is applied...
+
+		type genDoc struct {
+			ID any `bson:"_id"`
+		}
+		var res genDoc
+		err := dec.Decode(&res)
+		if err != nil {
+			return *new(TData), exerr.Wrap(err, "failed to ID-decode entity").NoLog().Build()
+		}
+
+		v, err := c.findOneInternal(ctx, bson.M{"_id": res.ID}, false)
+		if err != nil {
+			return *new(TData), exerr.Wrap(err, "failed to re-query entity").Any("_id", res.ID).NoLog().Build()
+		}
+
+		return *v, nil
+
+	}
 }

wmo/pagination.go

@@ -1,87 +0,0 @@
-package wmo
-
-import (
-	"go.mongodb.org/mongo-driver/bson"
-	ct "gogs.mikescher.com/BlackForestBytes/goext/cursortoken"
-	"gogs.mikescher.com/BlackForestBytes/goext/exerr"
-)
-
-func CreatePagination[TData any](coll *Coll[TData], token ct.CursorToken, fieldPrimary string, sortPrimary ct.SortDirection, fieldSecondary *string, sortSecondary *ct.SortDirection, pageSize *int) ([]bson.D, error) {
-
-	cond := bson.A{}
-	sort := bson.D{}
-
-	valuePrimary, err := coll.getTokenValueAsMongoType(token.ValuePrimary, fieldPrimary)
-	if err != nil {
-		return nil, exerr.Wrap(err, "failed to get (primary) token-value as mongo-type").Build()
-	}
-
-	if sortPrimary == ct.SortASC {
-		// We sort ASC on <field> - so we want all entries newer ($gt) than the $primary
-		cond = append(cond, bson.M{fieldPrimary: bson.M{"$gt": valuePrimary}})
-		sort = append(sort, bson.E{Key: fieldPrimary, Value: +1})
-	} else if sortPrimary == ct.SortDESC {
-		// We sort DESC on <field> - so we want all entries older ($lt) than the $primary
-		cond = append(cond, bson.M{fieldPrimary: bson.M{"$lt": valuePrimary}})
-		sort = append(sort, bson.E{Key: fieldPrimary, Value: -1})
-	}
-
-	if fieldSecondary != nil && sortSecondary != nil && *fieldSecondary != fieldPrimary {
-
-		valueSecondary, err := coll.getTokenValueAsMongoType(token.ValueSecondary, *fieldSecondary)
-		if err != nil {
-			return nil, exerr.Wrap(err, "failed to get (secondary) token-value as mongo-type").Build()
-		}
-
-		if *sortSecondary == ct.SortASC {
-
-			// the conflict-resolution condition, for entries with the _same_ <field> as the $primary we take the ones with a greater $secondary (= newer)
-			cond = append(cond, bson.M{"$and": bson.A{
-				bson.M{fieldPrimary: valuePrimary},
-				bson.M{*fieldSecondary: bson.M{"$gt": valueSecondary}},
-			}})
-
-			sort = append(sort, bson.E{Key: fieldPrimary, Value: +1})
-
-		} else if *sortSecondary == ct.SortDESC {
-
-			// the conflict-resolution condition, for entries with the _same_ <field> as the $primary we take the ones with a smaller $secondary (= older)
-			cond = append(cond, bson.M{"$and": bson.A{
-				bson.M{fieldPrimary: valuePrimary},
-				bson.M{*fieldSecondary: bson.M{"$lt": valueSecondary}},
-			}})
-
-			sort = append(sort, bson.E{Key: fieldPrimary, Value: -1})
-
-		}
-	}
-
-	pipeline := make([]bson.D, 0, 3)
-
-	if token.Mode == ct.CTMStart {
-
-		// no gt/lt condition
-
-	} else if token.Mode == ct.CTMNormal {
-
-		pipeline = append(pipeline, bson.D{{Key: "$match", Value: bson.M{"$or": cond}}})
-
-	} else if token.Mode == ct.CTMEnd {
-
-		// false
-		pipeline = append(pipeline, bson.D{{Key: "$match", Value: bson.M{"$expr": bson.M{"$eq": bson.A{"1", "0"}}}}})
-
-	} else {
-
-		return nil, exerr.New(exerr.TypeInternal, "unknown ct mode: "+string(token.Mode)).Any("token.Mode", token.Mode).Build()
-
-	}
-
-	pipeline = append(pipeline, bson.D{{Key: "$sort", Value: sort}})
-
-	if pageSize != nil {
-		pipeline = append(pipeline, bson.D{{Key: "$limit", Value: int64(*pageSize + 1)}})
-	}
-
-	return pipeline, nil
-}

wmo/queryAggregate.go

@@ -5,9 +5,13 @@ import (
 	"go.mongodb.org/mongo-driver/mongo"
 	"go.mongodb.org/mongo-driver/mongo/options"
 	"gogs.mikescher.com/BlackForestBytes/goext/exerr"
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
 )
 
 func (c *Coll[TData]) Aggregate(ctx context.Context, pipeline mongo.Pipeline, opts ...*options.AggregateOptions) ([]TData, error) {
+
+	pipeline = langext.ArrConcat(pipeline, c.extraModPipeline)
+
 	cursor, err := c.coll.Aggregate(ctx, pipeline, opts...)
 	if err != nil {
 		return nil, exerr.Wrap(err, "mongo-aggregation failed").Any("pipeline", pipeline).Any("options", opts).Str("collection", c.Name()).Build()
@@ -22,6 +26,9 @@ func (c *Coll[TData]) Aggregate(ctx context.Context, pipeline mongo.Pipeline, op
 }
 
 func (c *Coll[TData]) AggregateOneOpt(ctx context.Context, pipeline mongo.Pipeline, opts ...*options.AggregateOptions) (*TData, error) {
+
+	pipeline = langext.ArrConcat(pipeline, c.extraModPipeline)
+
 	cursor, err := c.coll.Aggregate(ctx, pipeline, opts...)
 	if err != nil {
 		return nil, exerr.Wrap(err, "mongo-aggregation failed").Any("pipeline", pipeline).Any("options", opts).Str("collection", c.Name()).Build()
@@ -39,6 +46,9 @@ func (c *Coll[TData]) AggregateOneOpt(ctx context.Context, pipeline mongo.Pipeli
 }
 
 func (c *Coll[TData]) AggregateOne(ctx context.Context, pipeline mongo.Pipeline, opts ...*options.AggregateOptions) (TData, error) {
+
+	pipeline = langext.ArrConcat(pipeline, c.extraModPipeline)
+
 	cursor, err := c.coll.Aggregate(ctx, pipeline, opts...)
 	if err != nil {
 		return *new(TData), exerr.Wrap(err, "mongo-aggregation failed").Any("pipeline", pipeline).Any("options", opts).Str("collection", c.Name()).Build()

wmo/queryFind.go

@@ -2,69 +2,56 @@ package wmo
 
 import (
 	"context"
-	"errors"
 	"go.mongodb.org/mongo-driver/bson"
 	"go.mongodb.org/mongo-driver/mongo"
 	"go.mongodb.org/mongo-driver/mongo/options"
 	"gogs.mikescher.com/BlackForestBytes/goext/exerr"
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
 )
 
-func (c *Coll[TData]) FindOne(ctx context.Context, filter bson.M) (TData, error) {
-	mongoRes := c.coll.FindOne(ctx, filter)
-	if err := mongoRes.Err(); err != nil {
-		return *new(TData), exerr.Wrap(err, "mongo-query[find-one] failed").
-			Str("collection", c.Name()).
-			Any("filter", filter).
-			Build()
-	}
-
-	return c.decodeSingle(ctx, mongoRes)
-}
-
-func (c *Coll[TData]) FindOneOpt(ctx context.Context, filter bson.M) (*TData, error) {
-	mongoRes := c.coll.FindOne(ctx, filter)
-
-	res, err := c.decodeSingle(ctx, mongoRes)
-	if errors.Is(err, mongo.ErrNoDocuments) {
-		return nil, nil
-	}
-	if err != nil {
-		return nil, exerr.Wrap(err, "mongo-query[find-one-opt] failed").Any("filter", filter).Str("collection", c.Name()).Build()
-	}
-
-	return &res, nil
-}
-
-func (c *Coll[TData]) FindOneByID(ctx context.Context, id EntityID) (TData, error) {
-	mongoRes := c.coll.FindOne(ctx, bson.M{"_id": id})
-	if err := mongoRes.Err(); err != nil {
-		return *new(TData), exerr.Wrap(err, "mongo-query[find-one-by-id] failed").
-			Str("collection", c.Name()).
-			Id("id", id).
-			Build()
-	}
-
-	return c.decodeSingle(ctx, mongoRes)
-}
-
-func (c *Coll[TData]) FindOneOptByID(ctx context.Context, id EntityID) (*TData, error) {
-	mongoRes := c.coll.FindOne(ctx, bson.M{"_id": id})
-
-	res, err := c.decodeSingle(ctx, mongoRes)
-	if errors.Is(err, mongo.ErrNoDocuments) {
-		return nil, nil
-	}
-	if err != nil {
-		return nil, exerr.Wrap(err, "mongo-query[find-one-opt-by-id] failed").Id("id", id).Str("collection", c.Name()).Build()
-	}
-
-	return &res, nil
-}
-
 func (c *Coll[TData]) Find(ctx context.Context, filter bson.M, opts ...*options.FindOptions) ([]TData, error) {
-	cursor, err := c.coll.Find(ctx, filter, opts...)
+
+	pipeline := mongo.Pipeline{}
+	pipeline = append(pipeline, bson.D{{Key: "$match", Value: filter}})
+
+	for _, opt := range opts {
+		if opt != nil && opt.Sort != nil {
+			pipeline = append(pipeline, bson.D{{Key: "$sort", Value: opt.Sort}})
+		}
+	}
+
+	for _, opt := range opts {
+		if opt != nil && opt.Skip != nil {
+			pipeline = append(pipeline, bson.D{{Key: "$skip", Value: *opt.Skip}})
+		}
+	}
+
+	for _, opt := range opts {
+		if opt != nil && opt.Limit != nil {
+			pipeline = append(pipeline, bson.D{{Key: "$limit", Value: *opt.Limit}})
+		}
+	}
+
+	pipeline = langext.ArrConcat(pipeline, c.extraModPipeline)
+
+	for _, opt := range opts {
+		if opt != nil && opt.Projection != nil {
+			pipeline = append(pipeline, bson.D{{Key: "$project", Value: opt.Projection}})
+		}
+	}
+
+	convOpts := make([]*options.AggregateOptions, 0, len(opts))
+	for _, v := range opts {
+		vConv, err := convertFindOpt(v)
+		if err != nil {
+			return nil, exerr.Wrap(err, "mongo-aggregation failed").Any("pipeline", pipeline).Str("collection", c.Name()).Build()
+		}
+		convOpts = append(convOpts, vConv)
+	}
+
+	cursor, err := c.coll.Aggregate(ctx, pipeline, convOpts...)
 	if err != nil {
-		return nil, exerr.Wrap(err, "mongo-query[find-one-opt] failed").Any("filter", filter).Any("opts", opts).Str("collection", c.Name()).Build()
+		return nil, exerr.Wrap(err, "mongo-aggregation failed").Any("pipeline", pipeline).Str("collection", c.Name()).Build()
 	}
 
 	res, err := c.decodeAll(ctx, cursor)
@@ -74,3 +61,66 @@ func (c *Coll[TData]) Find(ctx context.Context, filter bson.M, opts ...*options.
 
 	return res, nil
 }
+
+// converts FindOptions to AggregateOptions
+func convertFindOpt(v *options.FindOptions) (*options.AggregateOptions, error) {
+	if v == nil {
+		return nil, nil
+	}
+
+	r := options.Aggregate()
+
+	if v.AllowDiskUse != nil {
+		r.SetAllowDiskUse(*v.AllowDiskUse)
+	}
+	if v.AllowPartialResults != nil {
+		return nil, exerr.New(exerr.TypeMongoInvalidOpt, "Invalid option 'AllowPartialResults' (cannot convert to AggregateOptions)").Build()
+	}
+	if v.BatchSize != nil {
+		r.SetBatchSize(*v.BatchSize)
+	}
+	if v.Collation != nil {
+		r.SetCollation(v.Collation)
+	}
+	if v.Comment != nil {
+		r.SetComment(*v.Comment)
+	}
+	if v.CursorType != nil {
+		return nil, exerr.New(exerr.TypeMongoInvalidOpt, "Invalid option 'CursorType' (cannot convert to AggregateOptions)").Build()
+	}
+	if v.Hint != nil {
+		r.SetHint(v.Hint)
+	}
+	if v.Max != nil {
+		return nil, exerr.New(exerr.TypeMongoInvalidOpt, "Invalid option 'Max' (cannot convert to AggregateOptions)").Build()
+	}
+	if v.MaxAwaitTime != nil {
+		r.SetMaxAwaitTime(*v.MaxAwaitTime)
+	}
+	if v.MaxTime != nil {
+		r.SetMaxTime(*v.MaxTime)
+	}
+	if v.Min != nil {
+		return nil, exerr.New(exerr.TypeMongoInvalidOpt, "Invalid option 'Min' (cannot convert to AggregateOptions)").Build()
+	}
+	if v.NoCursorTimeout != nil {
+		return nil, exerr.New(exerr.TypeMongoInvalidOpt, "Invalid option 'NoCursorTimeout' (cannot convert to AggregateOptions)").Build()
+	}
+	if v.OplogReplay != nil {
+		return nil, exerr.New(exerr.TypeMongoInvalidOpt, "Invalid option 'OplogReplay' (cannot convert to AggregateOptions)").Build()
+	}
+	if v.ReturnKey != nil {
+		return nil, exerr.New(exerr.TypeMongoInvalidOpt, "Invalid option 'ReturnKey' (cannot convert to AggregateOptions)").Build()
+	}
+	if v.ShowRecordID != nil {
+		return nil, exerr.New(exerr.TypeMongoInvalidOpt, "Invalid option 'ShowRecordID' (cannot convert to AggregateOptions)").Build()
+	}
+	if v.Snapshot != nil {
+		return nil, exerr.New(exerr.TypeMongoInvalidOpt, "Invalid option 'Snapshot' (cannot convert to AggregateOptions)").Build()
+	}
+	if v.Let != nil {
+		r.SetLet(v.Let)
+	}
+
+	return r, nil
+}

wmo/queryFindOne.go

@@ -0,0 +1,93 @@
+package wmo
+
+import (
+	"context"
+	"errors"
+	"go.mongodb.org/mongo-driver/bson"
+	"go.mongodb.org/mongo-driver/mongo"
+	"gogs.mikescher.com/BlackForestBytes/goext/exerr"
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+)
+
+func (c *Coll[TData]) FindOne(ctx context.Context, filter bson.M) (TData, error) {
+	r, err := c.findOneInternal(ctx, filter, false)
+	if err != nil {
+		return *new(TData), exerr.Wrap(err, "mongo-query[find-one] failed").Str("collection", c.Name()).Build()
+	}
+
+	return *r, nil
+}
+
+func (c *Coll[TData]) FindOneOpt(ctx context.Context, filter bson.M) (*TData, error) {
+	r, err := c.findOneInternal(ctx, filter, true)
+	if err != nil {
+		return nil, exerr.Wrap(err, "mongo-query[find-one-opt] failed").Str("collection", c.Name()).Build()
+	}
+
+	return r, nil
+}
+
+func (c *Coll[TData]) FindOneByID(ctx context.Context, id EntityID) (TData, error) {
+	r, err := c.findOneInternal(ctx, bson.M{"_id": id}, false)
+	if err != nil {
+		return *new(TData), exerr.Wrap(err, "mongo-query[find-one-by-id] failed").Id("id", id).Str("collection", c.Name()).Build()
+	}
+
+	return *r, nil
+}
+
+func (c *Coll[TData]) FindOneOptByID(ctx context.Context, id EntityID) (*TData, error) {
+	r, err := c.findOneInternal(ctx, bson.M{"_id": id}, true)
+	if err != nil {
+		return nil, exerr.Wrap(err, "mongo-query[find-one-opt-by-id] failed").Id("id", id).Str("collection", c.Name()).Build()
+	}
+
+	return r, nil
+}
+
+func (c *Coll[TData]) findOneInternal(ctx context.Context, filter bson.M, allowNull bool) (*TData, error) {
+
+	if len(c.extraModPipeline) == 0 {
+
+		// simple case, use mongo FindOne
+
+		mongoRes := c.coll.FindOne(ctx, filter)
+
+		res, err := c.decodeSingle(ctx, mongoRes)
+		if allowNull && errors.Is(err, mongo.ErrNoDocuments) {
+			return nil, nil
+		}
+		if err != nil {
+			return nil, exerr.Wrap(err, "mongo-query[find-one] failed").Any("filter", filter).Str("collection", c.Name()).NoLog().Build()
+		}
+
+		return &res, nil
+
+	} else {
+
+		// complex case, we one ore more additional pipeline stages, convert to aggregation
+
+		pipeline := mongo.Pipeline{}
+		pipeline = append(pipeline, bson.D{{Key: "$match", Value: filter}})
+		pipeline = append(pipeline, bson.D{{Key: "$limit", Value: 1}})
+
+		pipeline = langext.ArrConcat(pipeline, c.extraModPipeline)
+
+		cursor, err := c.coll.Aggregate(ctx, pipeline)
+		if err != nil {
+			return nil, exerr.Wrap(err, "mongo-aggregation [find-one] failed").Any("pipeline", pipeline).Str("collection", c.Name()).NoLog().Build()
+		}
+
+		if cursor.Next(ctx) {
+			v, err := c.decodeSingle(ctx, cursor)
+			if err != nil {
+				return nil, exerr.Wrap(err, "mongo-aggregation [find-one] failed to decode results").Any("pipeline", pipeline).Str("collection", c.Name()).NoLog().Build()
+			}
+			return &v, nil
+		} else if allowNull {
+			return nil, nil
+		} else {
+			return nil, exerr.Wrap(mongo.ErrNoDocuments, "mongo-aggregation [find-one] returned no documents").Any("pipeline", pipeline).Str("collection", c.Name()).NoLog().Build()
+		}
+	}
+}

wmo/queryInsert.go

@@ -14,9 +14,25 @@ func (c *Coll[TData]) InsertOne(ctx context.Context, valueIn TData) (TData, erro
 		return *new(TData), exerr.Wrap(err, "mongo-query[insert-one] failed").Str("collection", c.Name()).Build()
 	}
 
-	mongoRes := c.coll.FindOne(ctx, bson.M{"_id": insRes.InsertedID})
+	r, err := c.findOneInternal(ctx, bson.M{"_id": insRes.InsertedID}, false)
+	if err != nil {
+		return *new(TData), exerr.Wrap(err, "mongo-query[insert-one] failed").Str("collection", c.Name()).Build()
+	}
+	return *r, nil
+}
 
-	return c.decodeSingle(ctx, mongoRes)
+// InsertOneUnchecked behaves the same as InsertOne, but allows arbitrary data to be inserted (valueIn is any instead of TData)
+func (c *Coll[TData]) InsertOneUnchecked(ctx context.Context, valueIn any) (TData, error) {
+	insRes, err := c.coll.InsertOne(ctx, valueIn)
+	if err != nil {
+		return *new(TData), exerr.Wrap(err, "mongo-query[insert-one] failed").Str("collection", c.Name()).Build()
+	}
+
+	r, err := c.findOneInternal(ctx, bson.M{"_id": insRes.InsertedID}, false)
+	if err != nil {
+		return *new(TData), exerr.Wrap(err, "mongo-query[insert-one] failed").Str("collection", c.Name()).Build()
+	}
+	return *r, nil
 }
 
 func (c *Coll[TData]) InsertMany(ctx context.Context, valueIn []TData) (*mongo.InsertManyResult, error) {
@@ -27,3 +43,13 @@ func (c *Coll[TData]) InsertMany(ctx context.Context, valueIn []TData) (*mongo.I
 
 	return insRes, nil
 }
+
+// InsertManyUnchecked behaves the same as InsertOne, but allows arbitrary data to be inserted (valueIn is []any instead of []TData)
+func (c *Coll[TData]) InsertManyUnchecked(ctx context.Context, valueIn []any) (*mongo.InsertManyResult, error) {
+	insRes, err := c.coll.InsertMany(ctx, langext.ArrayToInterface(valueIn))
+	if err != nil {
+		return nil, exerr.Wrap(err, "mongo-query[insert-many] failed").Int("len(valueIn)", len(valueIn)).Str("collection", c.Name()).Build()
+	}
+
+	return insRes, nil
+}

wmo/queryList.go

@@ -34,7 +34,7 @@ func (c *Coll[TData]) List(ctx context.Context, filter ct.Filter, pageSize *int,
 		sortDirSecondary = nil
 	}
 
-	paginationPipeline, err := CreatePagination(c, inTok, sortPrimary, sortDirPrimary, sortSecondary, sortDirSecondary, pageSize)
+	paginationPipeline, err := createPaginationPipeline(c, inTok, sortPrimary, sortDirPrimary, sortSecondary, sortDirSecondary, pageSize)
 	if err != nil {
 		return nil, ct.CursorToken{}, exerr.
 			Wrap(err, "failed to create pagination").
@@ -50,6 +50,7 @@ func (c *Coll[TData]) List(ctx context.Context, filter ct.Filter, pageSize *int,
 	}
 
 	pipeline = append(pipeline, paginationPipeline...)
+	pipeline = append(pipeline, c.extraModPipeline...)
 
 	cursor, err := c.coll.Aggregate(ctx, pipeline)
 	if err != nil {
@@ -91,11 +92,11 @@ func (c *Coll[TData]) List(ctx context.Context, filter ct.Filter, pageSize *int,
 	return entities, nextToken, nil
 }
 
-type countRes struct {
-	Count int64 `bson:"c"`
-}
+func (c *Coll[TData]) Count(ctx context.Context, filter ct.RawFilter) (int64, error) {
+	type countRes struct {
+		Count int64 `bson:"c"`
+	}
 
-func (c *Coll[TData]) Count(ctx context.Context, filter ct.Filter) (int64, error) {
 	pipeline := filter.FilterQuery()
 
 	pipeline = append(pipeline, bson.D{{Key: "$count", Value: "c"}})
@@ -130,3 +131,83 @@ func (c *Coll[TData]) ListWithCount(ctx context.Context, filter ct.Filter, pageS
 	}
 	return data, token, count, nil
 }
+
+func createPaginationPipeline[TData any](coll *Coll[TData], token ct.CursorToken, fieldPrimary string, sortPrimary ct.SortDirection, fieldSecondary *string, sortSecondary *ct.SortDirection, pageSize *int) ([]bson.D, error) {
+
+	cond := bson.A{}
+	sort := bson.D{}
+
+	valuePrimary, err := coll.getTokenValueAsMongoType(token.ValuePrimary, fieldPrimary)
+	if err != nil {
+		return nil, exerr.Wrap(err, "failed to get (primary) token-value as mongo-type").Build()
+	}
+
+	if sortPrimary == ct.SortASC {
+		// We sort ASC on <field> - so we want all entries newer ($gt) than the $primary
+		cond = append(cond, bson.M{fieldPrimary: bson.M{"$gt": valuePrimary}})
+		sort = append(sort, bson.E{Key: fieldPrimary, Value: +1})
+	} else if sortPrimary == ct.SortDESC {
+		// We sort DESC on <field> - so we want all entries older ($lt) than the $primary
+		cond = append(cond, bson.M{fieldPrimary: bson.M{"$lt": valuePrimary}})
+		sort = append(sort, bson.E{Key: fieldPrimary, Value: -1})
+	}
+
+	if fieldSecondary != nil && sortSecondary != nil && *fieldSecondary != fieldPrimary {
+
+		valueSecondary, err := coll.getTokenValueAsMongoType(token.ValueSecondary, *fieldSecondary)
+		if err != nil {
+			return nil, exerr.Wrap(err, "failed to get (secondary) token-value as mongo-type").Build()
+		}
+
+		if *sortSecondary == ct.SortASC {
+
+			// the conflict-resolution condition, for entries with the _same_ <field> as the $primary we take the ones with a greater $secondary (= newer)
+			cond = append(cond, bson.M{"$and": bson.A{
+				bson.M{fieldPrimary: valuePrimary},
+				bson.M{*fieldSecondary: bson.M{"$gt": valueSecondary}},
+			}})
+
+			sort = append(sort, bson.E{Key: fieldPrimary, Value: +1})
+
+		} else if *sortSecondary == ct.SortDESC {
+
+			// the conflict-resolution condition, for entries with the _same_ <field> as the $primary we take the ones with a smaller $secondary (= older)
+			cond = append(cond, bson.M{"$and": bson.A{
+				bson.M{fieldPrimary: valuePrimary},
+				bson.M{*fieldSecondary: bson.M{"$lt": valueSecondary}},
+			}})
+
+			sort = append(sort, bson.E{Key: fieldPrimary, Value: -1})
+
+		}
+	}
+
+	pipeline := make([]bson.D, 0, 3)
+
+	if token.Mode == ct.CTMStart {
+
+		// no gt/lt condition
+
+	} else if token.Mode == ct.CTMNormal {
+
+		pipeline = append(pipeline, bson.D{{Key: "$match", Value: bson.M{"$or": cond}}})
+
+	} else if token.Mode == ct.CTMEnd {
+
+		// false
+		pipeline = append(pipeline, bson.D{{Key: "$match", Value: bson.M{"$expr": bson.M{"$eq": bson.A{"1", "0"}}}}})
+
+	} else {
+
+		return nil, exerr.New(exerr.TypeInternal, "unknown ct mode: "+string(token.Mode)).Any("token.Mode", token.Mode).Build()
+
+	}
+
+	pipeline = append(pipeline, bson.D{{Key: "$sort", Value: sort}})
+
+	if pageSize != nil {
+		pipeline = append(pipeline, bson.D{{Key: "$limit", Value: int64(*pageSize + 1)}})
+	}
+
+	return pipeline, nil
+}

wmo/queryPaginate.go

@@ -0,0 +1,82 @@
+package wmo
+
+import (
+	"context"
+	"go.mongodb.org/mongo-driver/bson"
+	"go.mongodb.org/mongo-driver/mongo"
+	"gogs.mikescher.com/BlackForestBytes/goext/exerr"
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	pag "gogs.mikescher.com/BlackForestBytes/goext/pagination"
+)
+
+func (c *Coll[TData]) Paginate(ctx context.Context, filter pag.Filter, page int, limit *int) ([]TData, pag.Pagination, error) {
+	type totalCountResult struct {
+		Count int `bson:"count"`
+	}
+
+	if page < 0 {
+		page = 1
+	}
+
+	pipelineSort := mongo.Pipeline{}
+	pipelineFilter := mongo.Pipeline{}
+	sort := bson.D{}
+
+	if filter != nil {
+		pipelineFilter = filter.FilterQuery()
+		sort = filter.Sort()
+	}
+
+	if len(sort) != 0 {
+		pipelineSort = append(pipelineSort, bson.D{{Key: "$sort", Value: sort}})
+	}
+
+	pipelinePaginate := mongo.Pipeline{}
+	if limit != nil {
+		pipelinePaginate = append(pipelinePaginate, bson.D{{Key: "$skip", Value: *limit * (page - 1)}})
+		pipelinePaginate = append(pipelinePaginate, bson.D{{Key: "$limit", Value: *limit}})
+	} else {
+		page = 1
+	}
+
+	pipelineCount := mongo.Pipeline{}
+	pipelineCount = append(pipelineCount, bson.D{{Key: "$count", Value: "count"}})
+
+	pipelineList := langext.ArrConcat(pipelineFilter, pipelineSort, pipelinePaginate, c.extraModPipeline, pipelineSort)
+	pipelineTotalCount := langext.ArrConcat(pipelineFilter, pipelineCount)
+
+	cursorList, err := c.coll.Aggregate(ctx, pipelineList)
+	if err != nil {
+		return nil, pag.Pagination{}, exerr.Wrap(err, "mongo-aggregation failed").Any("pipeline", pipelineList).Str("collection", c.Name()).Build()
+	}
+
+	entities, err := c.decodeAll(ctx, cursorList)
+	if err != nil {
+		return nil, pag.Pagination{}, exerr.Wrap(err, "failed to all-decode entities").Build()
+	}
+
+	cursorTotalCount, err := c.coll.Aggregate(ctx, pipelineTotalCount)
+	if err != nil {
+		return nil, pag.Pagination{}, exerr.Wrap(err, "mongo-aggregation failed").Any("pipeline", pipelineTotalCount).Str("collection", c.Name()).Build()
+	}
+
+	var tcRes totalCountResult
+	if cursorTotalCount.Next(ctx) {
+		err = cursorTotalCount.Decode(&tcRes)
+		if err != nil {
+			return nil, pag.Pagination{}, exerr.Wrap(err, "failed to decode mongo-aggregation $count result").Any("pipeline", pipelineTotalCount).Str("collection", c.Name()).Build()
+		}
+	} else {
+		tcRes.Count = 0 // no entries in DB
+	}
+
+	paginationObj := pag.Pagination{
+		Page:             page,
+		Limit:            langext.Coalesce(limit, tcRes.Count),
+		TotalPages:       pag.CalcPaginationTotalPages(tcRes.Count, langext.Coalesce(limit, tcRes.Count)),
+		TotalItems:       tcRes.Count,
+		CurrentPageCount: len(entities),
+	}
+
+	return entities, paginationObj, nil
+}

wmo/queryUpdate.go

@@ -18,7 +18,7 @@ func (c *Coll[TData]) FindOneAndUpdate(ctx context.Context, filterQuery bson.M,
 			Build()
 	}
 
-	return c.decodeSingle(ctx, mongoRes)
+	return c.decodeSingleOrRequery(ctx, mongoRes)
 }
 
 func (c *Coll[TData]) UpdateOne(ctx context.Context, filterQuery bson.M, updateQuery bson.M) error {
@@ -73,7 +73,7 @@ func (c *Coll[TData]) ReplaceOne(ctx context.Context, filterQuery bson.M, value
 }
 
 func (c *Coll[TData]) FindOneAndReplace(ctx context.Context, filterQuery bson.M, value TData) (TData, error) {
-	mongoRes := c.coll.FindOneAndUpdate(ctx, filterQuery, bson.M{"$set": value}, options.FindOneAndUpdate().SetReturnDocument(options.After))
+	mongoRes := c.coll.FindOneAndReplace(ctx, filterQuery, value, options.FindOneAndReplace().SetReturnDocument(options.After))
 	if err := mongoRes.Err(); err != nil {
 		return *new(TData), exerr.Wrap(err, "mongo-query[find-one-and-update] failed").
 			Str("collection", c.Name()).
@@ -81,5 +81,5 @@ func (c *Coll[TData]) FindOneAndReplace(ctx context.Context, filterQuery bson.M,
 			Build()
 	}
 
-	return c.decodeSingle(ctx, mongoRes)
+	return c.decodeSingleOrRequery(ctx, mongoRes)
 }