Merge branch 'feature/gmail_api'

.gitea/workflows/tests.yml

@@ -6,7 +6,12 @@
 name: Build Docker and Deploy
 run-name: Build & Deploy ${{ gitea.ref }} on ${{ gitea.actor }}
 
-on: [push]
+on:
+  push:
+    branches:
+      - '*'
+      - '**'
+
 
 jobs:
   run_tests:
@@ -34,3 +39,17 @@ jobs:
       - name: Run tests
         run: cd "${{ gitea.workspace }}" && make test
 
+      - 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>

README.md

@@ -23,6 +23,7 @@ Potentially needs `export GOPRIVATE="gogs.mikescher.com"`
 |             |            |                                                                                                               |
 | 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)                                                                 |

bfcodegen/enum-generate.go

@@ -37,7 +37,7 @@ 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_:\s]+"|[0-9]+))\s*(//(?P<descr>.*))?.*$`))
+var rexEnumValueDef = rext.W(regexp.MustCompile(`^\s*(?P<name>[A-Za-z0-9_]+)\s+(?P<type>[A-Za-z0-9_]+)\s*=\s*(?P<value>("[A-Za-z0-9_:\s\-]+"|[0-9]+))\s*(//(?P<descr>.*))?.*$`))
 
 var rexEnumChecksumConst = rext.W(regexp.MustCompile(`const ChecksumEnumGenerator = "(?P<cs>[A-Za-z0-9_]*)"`))
 

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)

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))
 }
@@ -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)
 
@@ -58,6 +59,9 @@ var (
 	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

@@ -169,14 +169,32 @@ func (ee *ExErr) ShortLog(evt *zerolog.Event) {
 
 // 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
 }
 

ginext/funcWrapper.go

@@ -14,7 +14,13 @@ 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{},
+		}
+
+		wrap, stackTrace, panicObj := callPanicSafe(fn, pctx)
 		if panicObj != nil {
 
 			fmt.Printf("\n======== ======== STACKTRACE ======== ========\n%s\n======== ======== ======== ========\n\n", stackTrace)
@@ -32,6 +38,13 @@ 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())
+			}
+		}
+
 		if reqctx.Err() == nil {
 			wrap.Write(g)
 		}

ginext/preContext.go

@@ -1,12 +1,15 @@
 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"
 )
@@ -17,9 +20,15 @@ type PreContext struct {
 	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

@@ -15,6 +15,7 @@ type headerval struct {
 type HTTPResponse interface {
 	Write(g *gin.Context)
 	WithHeader(k string, v string) HTTPResponse
+	IsSuccess() bool
 }
 
 type jsonHTTPResponse struct {
@@ -39,6 +40,10 @@ func (j jsonHTTPResponse) WithHeader(k string, v string) HTTPResponse {
 	return j
 }
 
+func (j jsonHTTPResponse) IsSuccess() bool {
+	return j.statusCode >= 200 && j.statusCode <= 399
+}
+
 type emptyHTTPResponse struct {
 	statusCode int
 	headers    []headerval
@@ -56,6 +61,10 @@ func (j emptyHTTPResponse) WithHeader(k string, v string) HTTPResponse {
 	return j
 }
 
+func (j emptyHTTPResponse) IsSuccess() bool {
+	return j.statusCode >= 200 && j.statusCode <= 399
+}
+
 type textHTTPResponse struct {
 	statusCode int
 	data       string
@@ -74,6 +83,10 @@ func (j textHTTPResponse) WithHeader(k string, v string) HTTPResponse {
 	return j
 }
 
+func (j textHTTPResponse) IsSuccess() bool {
+	return j.statusCode >= 200 && j.statusCode <= 399
+}
+
 type dataHTTPResponse struct {
 	statusCode  int
 	data        []byte
@@ -93,6 +106,10 @@ func (j dataHTTPResponse) WithHeader(k string, v string) HTTPResponse {
 	return j
 }
 
+func (j dataHTTPResponse) IsSuccess() bool {
+	return j.statusCode >= 200 && j.statusCode <= 399
+}
+
 type fileHTTPResponse struct {
 	mimetype string
 	filepath string
@@ -117,6 +134,10 @@ func (j fileHTTPResponse) WithHeader(k string, v string) HTTPResponse {
 	return j
 }
 
+func (j fileHTTPResponse) IsSuccess() bool {
+	return true
+}
+
 type downloadDataHTTPResponse struct {
 	statusCode int
 	mimetype   string
@@ -142,6 +163,10 @@ func (j downloadDataHTTPResponse) WithHeader(k string, v string) HTTPResponse {
 	return j
 }
 
+func (j downloadDataHTTPResponse) IsSuccess() bool {
+	return j.statusCode >= 200 && j.statusCode <= 399
+}
+
 type redirectHTTPResponse struct {
 	statusCode int
 	url        string
@@ -157,6 +182,10 @@ func (j redirectHTTPResponse) WithHeader(k string, v string) HTTPResponse {
 	return j
 }
 
+func (j redirectHTTPResponse) IsSuccess() bool {
+	return j.statusCode >= 200 && j.statusCode <= 399
+}
+
 type jsonAPIErrResponse struct {
 	err     *exerr.ExErr
 	headers []headerval
@@ -171,6 +200,10 @@ func (j jsonAPIErrResponse) WithHeader(k string, v string) HTTPResponse {
 	return j
 }
 
+func (j jsonAPIErrResponse) IsSuccess() bool {
+	return false
+}
+
 func Status(sc int) HTTPResponse {
 	return &emptyHTTPResponse{statusCode: sc}
 }

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

@@ -1,32 +1,32 @@
 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/rs/xid v1.5.0
 	github.com/rs/zerolog v1.31.0
-	go.mongodb.org/mongo-driver v1.12.1
+	go.mongodb.org/mongo-driver v1.13.0
-	golang.org/x/crypto v0.14.0
+	golang.org/x/crypto v0.16.0
-	golang.org/x/sys v0.13.0
+	golang.org/x/sys v0.15.0
-	golang.org/x/term v0.13.0
+	golang.org/x/term v0.15.0
 )
 
 require (
 	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/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 v10.15.5 // 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 v1.17.2 // indirect
+	github.com/klauspost/compress v1.17.4 // indirect
-	github.com/klauspost/cpuid/v2 v2.2.5 // 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 v0.0.20 // indirect
@@ -35,15 +35,15 @@ require (
 	github.com/montanaflynn/stats v0.7.1 // indirect
 	github.com/pelletier/go-toml/v2 v2.1.0 // 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/arch v0.6.0 // indirect
-	golang.org/x/net v0.17.0 // indirect
+	golang.org/x/net v0.19.0 // indirect
-	golang.org/x/sync v0.4.0 // indirect
+	golang.org/x/sync v0.5.0 // indirect
-	golang.org/x/text v0.13.0 // indirect
+	golang.org/x/text v0.14.0 // indirect
 	google.golang.org/protobuf v1.31.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )

go.sum

@@ -8,6 +8,8 @@ github.com/chenzhuoyu/base64x v0.0.0-20230717121745-296ad89f973d h1:77cEq6EriyTZ
 github.com/chenzhuoyu/base64x v0.0.0-20230717121745-296ad89f973d/go.mod h1:8EPpVsBuRksnlj1mLy4AWzRNQYxauNi62uWcE3to6eA=
 github.com/chenzhuoyu/iasm v0.9.0 h1:9fhXjVzq5hUy2gkhhgHl95zG2cEAhw9OSGs8toWWAwo=
 github.com/chenzhuoyu/iasm v0.9.0/go.mod h1:Xjy2NpN3h7aUqeqM+woSuuvxmIe6+DDsiNLIrkAmYog=
+github.com/chenzhuoyu/iasm v0.9.1 h1:tUHQJXo3NhBqw6s33wkGn9SP3bvrWLdlVIJ3hQBL7P0=
+github.com/chenzhuoyu/iasm v0.9.1/go.mod h1:Xjy2NpN3h7aUqeqM+woSuuvxmIe6+DDsiNLIrkAmYog=
 github.com/coreos/go-systemd/v22 v22.5.0/go.mod h1:Y58oyj3AT4RCenI/lSvhwexgC+NSVTIJ3seZv2GcEnc=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
@@ -27,6 +29,8 @@ github.com/go-playground/universal-translator v0.18.1 h1:Bcnm0ZwsGyWbCzImXv+pAJn
 github.com/go-playground/universal-translator v0.18.1/go.mod h1:xekY+UJKNuX9WP91TpwSH2VMlDf28Uj24BCp08ZFTUY=
 github.com/go-playground/validator/v10 v10.15.5 h1:LEBecTWb/1j5TNY1YYG2RcOUN3R7NLylN+x8TTueE24=
 github.com/go-playground/validator/v10 v10.15.5/go.mod h1:9iXMNT7sEkjXb0I+enO7QXmzG6QCsPWY4zveKFVRSyU=
+github.com/go-playground/validator/v10 v10.16.0 h1:x+plE831WK4vaKHO/jpgUGsvLKIqRRkz6M78GuJAfGE=
+github.com/go-playground/validator/v10 v10.16.0/go.mod h1:9iXMNT7sEkjXb0I+enO7QXmzG6QCsPWY4zveKFVRSyU=
 github.com/go-sql-driver/mysql v1.6.0 h1:BCTh4TKNUYmOmMUcQ3IipzF5prigylS7XXjEkfCHuOE=
 github.com/go-sql-driver/mysql v1.6.0/go.mod h1:DCzpHaOWr8IXmIStZouvnhqoel9Qv2LBy8hT2VhHyBg=
 github.com/goccy/go-json v0.10.2 h1:CrxCmQqYDkv1z7lO7Wbh2HN93uovUHgrECaO5ZrCXAU=
@@ -51,9 +55,15 @@ github.com/klauspost/compress v1.17.1 h1:NE3C767s2ak2bweCZo3+rdP4U/HoyVXLv/X9f2g
 github.com/klauspost/compress v1.17.1/go.mod h1:ntbaceVETuRiXiv4DpjP66DpAtAGkEQskQzEyD//IeE=
 github.com/klauspost/compress v1.17.2 h1:RlWWUY/Dr4fL8qk9YG7DTZ7PDgME2V4csBXA8L/ixi4=
 github.com/klauspost/compress v1.17.2/go.mod h1:ntbaceVETuRiXiv4DpjP66DpAtAGkEQskQzEyD//IeE=
+github.com/klauspost/compress v1.17.3 h1:qkRjuerhUU1EmXLYGkSH6EZL+vPSxIrYjLNAK4slzwA=
+github.com/klauspost/compress v1.17.3/go.mod h1:/dCuZOvVtNoHsyb+cuJD3itjs3NbnF6KH9zAO4BDxPM=
+github.com/klauspost/compress v1.17.4 h1:Ej5ixsIri7BrIjBkRZLTo6ghwrEtHFk7ijlczPW4fZ4=
+github.com/klauspost/compress v1.17.4/go.mod h1:/dCuZOvVtNoHsyb+cuJD3itjs3NbnF6KH9zAO4BDxPM=
 github.com/klauspost/cpuid/v2 v2.0.9/go.mod h1:FInQzS24/EEf25PyTYn52gqo7WaD8xa0213Md/qVLRg=
 github.com/klauspost/cpuid/v2 v2.2.5 h1:0E5MSMDEoAulmXNFquVs//DdoomxaoTY1kUhbc/qbZg=
 github.com/klauspost/cpuid/v2 v2.2.5/go.mod h1:Lcz8mBdAVJIBVzewtcLocK12l3Y+JytZYpaMropDUws=
+github.com/klauspost/cpuid/v2 v2.2.6 h1:ndNyv040zDGIDh8thGkXYjnFtiN02M1PVVF+JE/48xc=
+github.com/klauspost/cpuid/v2 v2.2.6/go.mod h1:Lcz8mBdAVJIBVzewtcLocK12l3Y+JytZYpaMropDUws=
 github.com/knz/go-libedit v1.10.1/go.mod h1:MZTVkCWyz0oBc7JOWP3wNAzd002ZbM/5hgShxwh4x8M=
 github.com/leodido/go-urn v1.2.4 h1:XlAE/cm/ms7TE/VMVoduSpNBoyc2dOxHs5MZSwAN63Q=
 github.com/leodido/go-urn v1.2.4/go.mod h1:7ZrI8mTSeBSHl/UaRyKQW1qZeMgak41ANeCNaVckg+4=
@@ -100,6 +110,8 @@ github.com/twitchyliquid64/golang-asm v0.15.1 h1:SU5vSMR7hnwNxj24w34ZyCi/FmDZTkS
 github.com/twitchyliquid64/golang-asm v0.15.1/go.mod h1:a1lVb/DtPvCB8fslRZhAngC2+aY1QWCk3Cedj/Gdt08=
 github.com/ugorji/go/codec v1.2.11 h1:BMaWp1Bb6fHwEtbplGBGJ498wD+LKlNSl25MjdZY4dU=
 github.com/ugorji/go/codec v1.2.11/go.mod h1:UNopzCgEMSXjBc6AOMqYvWC1ktqTAfzJZUZgYf6w6lg=
+github.com/ugorji/go/codec v1.2.12 h1:9LC83zGrHhuUA9l16C9AHXAqEV/2wBQ4nkvumAE65EE=
+github.com/ugorji/go/codec v1.2.12/go.mod h1:UNopzCgEMSXjBc6AOMqYvWC1ktqTAfzJZUZgYf6w6lg=
 github.com/xdg-go/pbkdf2 v1.0.0 h1:Su7DPu48wXMwC3bs7MCNG+z4FhcyEuz5dlvchbq0B0c=
 github.com/xdg-go/pbkdf2 v1.0.0/go.mod h1:jrpuAogTd400dnrH08LKmI/xc1MbPOebTwRqcT5RDeI=
 github.com/xdg-go/scram v1.1.2 h1:FHX5I5B4i4hKRVRBCFRxq1iQRej7WO3hhBuJf+UUySY=
@@ -112,15 +124,23 @@ github.com/youmark/pkcs8 v0.0.0-20201027041543-1326539a0a0a/go.mod h1:ul22v+Nro/
 github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
 go.mongodb.org/mongo-driver v1.12.1 h1:nLkghSU8fQNaK7oUmDhQFsnrtcoNy7Z6LVFKsEecqgE=
 go.mongodb.org/mongo-driver v1.12.1/go.mod h1:/rGBTebI3XYboVmgz+Wv3Bcbl3aD0QF9zl6kDDw18rQ=
+go.mongodb.org/mongo-driver v1.13.0 h1:67DgFFjYOCMWdtTEmKFpV3ffWlFnh+CYZ8ZS/tXWUfY=
+go.mongodb.org/mongo-driver v1.13.0/go.mod h1:/rGBTebI3XYboVmgz+Wv3Bcbl3aD0QF9zl6kDDw18rQ=
 golang.org/x/arch v0.0.0-20210923205945-b76863e36670/go.mod h1:5om86z9Hs0C8fWVUuoMHwpExlXzs5Tkyp9hOrfG7pp8=
 golang.org/x/arch v0.5.0 h1:jpGode6huXQxcskEIpOCvrU+tzo81b6+oFLUYXWtH/Y=
 golang.org/x/arch v0.5.0/go.mod h1:5om86z9Hs0C8fWVUuoMHwpExlXzs5Tkyp9hOrfG7pp8=
+golang.org/x/arch v0.6.0 h1:S0JTfE48HbRj80+4tbvZDYsJ3tGv6BUU3XxyZ7CirAc=
+golang.org/x/arch v0.6.0/go.mod h1:FEVrYAQjsQXMVJ1nsMoVVXPZg6p2JE2mx8psSWTDQys=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20200302210943-78000ba7a073/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
 golang.org/x/crypto v0.0.0-20220622213112-05595931fe9d/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
 golang.org/x/crypto v0.14.0 h1:wBqGXzWJW6m1XrIKlAH0Hs1JJ7+9KBwnIO8v66Q9cHc=
 golang.org/x/crypto v0.14.0/go.mod h1:MVFd36DqK4CsrnJYDkBA3VC4m2GkXAM0PvzMCn4JQf4=
+golang.org/x/crypto v0.15.0 h1:frVn1TEaCEaZcn3Tmd7Y2b5KKPaZ+I32Q2OA3kYp5TA=
+golang.org/x/crypto v0.15.0/go.mod h1:4ChreQoLWfG3xLDer1WdlH5NdlQ3+mwnQq1YTKY+72g=
+golang.org/x/crypto v0.16.0 h1:mMMrFzRSCF0GvB7Ne27XVtVAaXLrPmgPC7/v0tkwHaY=
+golang.org/x/crypto v0.16.0/go.mod h1:gCAAfMLgwOJRpTjQ2zCCt2OcSfYMTeZVSRtQlPC7Nq4=
 golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
 golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
@@ -131,10 +151,16 @@ golang.org/x/net v0.16.0 h1:7eBu7KsSvFDtSXUIDbh3aqlK4DPsZ1rByC8PFfBThos=
 golang.org/x/net v0.16.0/go.mod h1:NxSsAGuq816PNPmqtQdLE42eU2Fs7NoRIZrHJAlaCOE=
 golang.org/x/net v0.17.0 h1:pVaXccu2ozPjCXewfr1S7xza/zcXTity9cCdXQYSjIM=
 golang.org/x/net v0.17.0/go.mod h1:NxSsAGuq816PNPmqtQdLE42eU2Fs7NoRIZrHJAlaCOE=
+golang.org/x/net v0.18.0 h1:mIYleuAkSbHh0tCv7RvjL3F6ZVbLjq4+R7zbOn3Kokg=
+golang.org/x/net v0.18.0/go.mod h1:/czyP5RqHAH4odGYxBJ1qz0+CE5WZ+2j1YgoEo8F2jQ=
+golang.org/x/net v0.19.0 h1:zTwKpTd2XuCqf8huc7Fo2iSy+4RHPd10s4KzeTnVr1c=
+golang.org/x/net v0.19.0/go.mod h1:CfAk/cbD4CthTvqiEl8NpboMuiuOYsAr/7NOjZJtv1U=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.4.0 h1:zxkM55ReGkDlKSM+Fu41A+zmbZuaPVbGMzvvdUPznYQ=
 golang.org/x/sync v0.4.0/go.mod h1:FU7BRWz2tNW+3quACPkgCx/L+uEAv1htQ0V83Z9Rj+Y=
+golang.org/x/sync v0.5.0 h1:60k92dhOjHxJkrqnwsfl8KuaHbn/5dl0lUPUklKo3qE=
+golang.org/x/sync v0.5.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
@@ -148,10 +174,18 @@ golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.12.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.13.0 h1:Af8nKPmuFypiUBjVoU9V20FiaFXOcuZI21p0ycVYYGE=
 golang.org/x/sys v0.13.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.14.0 h1:Vz7Qs629MkJkGyHxUlRHizWJRG2j8fbQKjELVSNhy7Q=
+golang.org/x/sys v0.14.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/sys v0.15.0 h1:h48lPFYpsTvQJZF4EKyI4aLHaev3CxivZmv7yZig9pc=
+golang.org/x/sys v0.15.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
 golang.org/x/term v0.13.0 h1:bb+I9cTfFazGW51MZqBVmZy7+JEJMouUHTUSKVQLBek=
 golang.org/x/term v0.13.0/go.mod h1:LTmsnFJwVN6bCy1rVCoS+qHT1HhALEFxKncY3WNNh4U=
+golang.org/x/term v0.14.0 h1:LGK9IlZ8T9jvdy6cTdfKUCltatMFOehAQo9SRC46UQ8=
+golang.org/x/term v0.14.0/go.mod h1:TySc+nGkYR6qt8km8wUhuFRTVSMIX3XPR58y2lC8vww=
+golang.org/x/term v0.15.0 h1:y/Oo/a/q3IXu26lQgl04j/gjuBDOBlx7X6Om1j2CPW4=
+golang.org/x/term v0.15.0/go.mod h1:BDl952bC7+uMoWR75FIrCDx79TPU9oHkTZ9yRbYOrX0=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
@@ -160,6 +194,8 @@ golang.org/x/text v0.3.8/go.mod h1:E6s5w1FMmriuDzIBO73fBruAKo1PCIq6d2Q6DHfQ8WQ=
 golang.org/x/text v0.7.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
 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=

goextVersion.go

@@ -1,5 +1,5 @@
 package goext
 
-const GoextVersion = "0.0.298"
+const GoextVersion = "0.0.333"
 
-const GoextVersionTimestamp = "2023-11-01T04:20:08+0100"
+const GoextVersionTimestamp = "2023-12-02T13:56:00+0100"

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 +1,77 @@
+package googleapi
+
+import (
+	"fmt"
+	"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)
+
+	fmt.Printf("%s\n\n", 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)
+
+	fmt.Printf("%s\n\n", 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"},
+		})
+
+	fmt.Printf("%s\n\n", mail)
+}
+
+func TestEncodeMimeMail4(t *testing.T) {
+
+	b := tst.Must(os.ReadFile("/home/mike/Pictures/Screenshot_20220706_190205.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"},
+		})
+
+	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("/home/mike/Pictures/Screenshot_20220706_190205.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/pointer.go

@@ -35,7 +35,7 @@ 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

@@ -5,6 +5,7 @@ import (
 	"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"
 )
@@ -18,9 +19,21 @@ 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)
 

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:"currntPageCount"` // 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)
 }

syncext/atomic.go

@@ -1,33 +1,28 @@
 package syncext
 
 import (
-	"context"
-	"gogs.mikescher.com/BlackForestBytes/goext/langext"
 	"sync"
-	"time"
 )
 
-type AtomicBool struct {
+type Atomic[T any] struct {
-	v        bool
+	v    T
-	listener map[string]chan bool
+	lock sync.RWMutex
-	lock     sync.Mutex
 }
 
-func NewAtomicBool(value bool) *AtomicBool {
+func NewAtomic[T any](value T) *Atomic[T] {
-	return &AtomicBool{
+	return &Atomic[T]{
 		v:    value,
-		listener: make(map[string]chan bool),
+		lock: sync.RWMutex{},
-		lock:     sync.Mutex{},
 	}
 }
 
-func (a *AtomicBool) Get() bool {
+func (a *Atomic[T]) Get() T {
-	a.lock.Lock()
+	a.lock.RLock()
-	defer a.lock.Unlock()
+	defer a.lock.RUnlock()
 	return a.v
 }
 
-func (a *AtomicBool) Set(value bool) bool {
+func (a *Atomic[T]) Set(value T) T {
 	a.lock.Lock()
 	defer a.lock.Unlock()
 
@@ -35,79 +30,5 @@ func (a *AtomicBool) Set(value bool) bool {
 
 	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
-			}
-		}
-	}
-}

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
+			}
+		}
+	}
+}

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) {
-	if c.customDecoder != nil {
-
-		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 res, nil
-
-	} else {
 
 	var res TData
+	var err error
 
-		err := dec.Decode(&res)
+	if c.customDecoder != nil {
+		res, err = (*c.customDecoder)(ctx, dec)
 		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 with custom-decoder").Type("decoder", *c.customDecoder).NoLog().Build()
+		}
+	} else {
+		err = dec.Decode(&res)
+		if err != nil {
+			return *new(TData), exerr.Wrap(err, "failed to decode single entity").Type("target-type", res).NoLog().Build()
+		}
+	}
+
+	for _, hook := range c.unmarshalHooks {
+		res = hook(res)
 	}
 
 	return res, nil
-
-	}
 }
 
 func (c *Coll[TData]) decodeAll(ctx context.Context, cursor Cursorable) ([]TData, error) {
-	if c.customDecoder != nil {
 
 	res := make([]TData, 0, cursor.RemainingBatchLength())
 
+	if c.customDecoder != nil {
 		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()
 		}
+	}
+
+	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-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()
+		}
+		convOpts = append(convOpts, vConv)
+	}
+
+	cursor, err := c.coll.Aggregate(ctx, pipeline, convOpts...)
+	if err != nil {
+		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 {
+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 {
@@ -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)
 }