v0.0.172

bfcodegen/enum-generate.go

@@ -11,6 +11,7 @@ import (
 	"io"
 	"os"
 	"path"
+	"path/filepath"
 	"regexp"
 	"strings"
 	"time"
@@ -24,6 +25,7 @@ type EnumDefVal struct {
 
 type EnumDef struct {
 	File         string
+	FileRelative string
 	EnumTypeName string
 	Type         string
 	Values       []EnumDefVal
@@ -83,7 +85,7 @@ func GenerateEnumSpecs(sourceDir string, destFile string) error {
 
 	for _, f := range files {
 		fmt.Printf("========= %s =========\n\n", f.Name())
-		fileEnums, pn, err := processFile(path.Join(sourceDir, f.Name()))
+		fileEnums, pn, err := processFile(sourceDir, path.Join(sourceDir, f.Name()))
 		if err != nil {
 			return err
 		}
@@ -123,7 +125,7 @@ func GenerateEnumSpecs(sourceDir string, destFile string) error {
 	return nil
 }
 
-func processFile(fn string) ([]EnumDef, string, error) {
+func processFile(basedir string, fn string) ([]EnumDef, string, error) {
 	file, err := os.Open(fn)
 	if err != nil {
 		return nil, "", err
@@ -153,8 +155,15 @@ func processFile(fn string) ([]EnumDef, string, error) {
 		}
 
 		if match, ok := rexEnumDef.MatchFirst(line); ok {
+
+			rfp, err := filepath.Rel(basedir, fn)
+			if err != nil {
+				return nil, "", err
+			}
+
 			def := EnumDef{
 				File:         fn,
+				FileRelative: rfp,
 				EnumTypeName: match.GroupByName("name").Value(),
 				Type:         match.GroupByName("type").Value(),
 				Values:       make([]EnumDefVal, 0),
@@ -239,7 +248,7 @@ func fmtOutput(cs string, enums []EnumDef, pkgname string) string {
 
 		str += "// ================================ " + enumdef.EnumTypeName + " ================================" + "\n"
 		str += "//" + "\n"
-		str += "// File:       " + enumdef.File + "\n"
+		str += "// File:       " + enumdef.FileRelative + "\n"
 		str += "// StringEnum: " + langext.Conditional(hasStr, "true", "false") + "\n"
 		str += "// DescrEnum:  " + langext.Conditional(hasDescr, "true", "false") + "\n"
 		str += "//" + "\n"

confext/confParser.go

@@ -178,9 +178,9 @@ func parseEnvToValue(envval string, fullEnvKey string, rvtype reflect.Type) (ref
 		if strings.TrimSpace(strings.ToLower(envval)) == "true" {
 			return reflect.ValueOf(true).Convert(rvtype), nil
 		} else if strings.TrimSpace(strings.ToLower(envval)) == "false" {
-			return reflect.ValueOf(true).Convert(rvtype), nil
-		} else if strings.TrimSpace(strings.ToLower(envval)) == "1" {
 			return reflect.ValueOf(false).Convert(rvtype), nil
+		} else if strings.TrimSpace(strings.ToLower(envval)) == "1" {
+			return reflect.ValueOf(true).Convert(rvtype), nil
 		} else if strings.TrimSpace(strings.ToLower(envval)) == "0" {
 			return reflect.ValueOf(false).Convert(rvtype), nil
 		} else {

cryptext/passHash.go

@@ -3,6 +3,7 @@ package cryptext
 import (
 	"crypto/rand"
 	"crypto/sha256"
+	"crypto/sha512"
 	"encoding/base64"
 	"encoding/hex"
 	"errors"
@@ -14,14 +15,15 @@ import (
 	"strings"
 )
 
-const LatestPassHashVersion = 4
+const LatestPassHashVersion = 5
 
 // PassHash
-// - [v0]: plaintext password ( `0|...` )
+// - [v0]: plaintext password ( `0|...` )                  // simple, used to write PW's directly in DB
-// - [v1]: sha256(plaintext)
+// - [v1]: sha256(plaintext)                               // simple hashing
-// - [v2]: seed | sha256<seed>(plaintext)
+// - [v2]: seed | sha256<seed>(plaintext)                  // add seed
-// - [v3]: seed | sha256<seed>(plaintext) | [hex(totp)]
+// - [v3]: seed | sha256<seed>(plaintext) | [hex(totp)]    // add TOTP support
-// - [v4]: bcrypt(plaintext) | [hex(totp)]
+// - [v4]: bcrypt(plaintext) | [hex(totp)]                 // use proper bcrypt
+// - [v5]: bcrypt(sha512(plaintext)) | [hex(totp)]         // hash pw before bcrypt (otherwise max pw-len = 72)
 type PassHash string
 
 func (ph PassHash) Valid() bool {
@@ -109,7 +111,21 @@ func (ph PassHash) Data() (_version int, _seed []byte, _payload []byte, _totp bo
 		totp := false
 		totpsecret := make([]byte, 0)
 		if split[2] != "0" {
-			totpsecret, err = hex.DecodeString(split[3])
+			totpsecret, err = hex.DecodeString(split[2])
+			totp = true
+		}
+		return int(version), nil, payload, totp, totpsecret, true
+	}
+
+	if version == 5 {
+		if len(split) != 3 {
+			return -1, nil, nil, false, nil, false
+		}
+		payload := []byte(split[1])
+		totp := false
+		totpsecret := make([]byte, 0)
+		if split[2] != "0" {
+			totpsecret, err = hex.DecodeString(split[2])
 			totp = true
 		}
 		return int(version), nil, payload, totp, totpsecret, true
@@ -156,6 +172,14 @@ func (ph PassHash) Verify(plainpass string, totp *string) bool {
 		}
 	}
 
+	if version == 5 {
+		if !hastotp {
+			return bcrypt.CompareHashAndPassword(payload, hash512(plainpass)) == nil
+		} else {
+			return bcrypt.CompareHashAndPassword(payload, hash512(plainpass)) == nil && totpext.Validate(totpsecret, *totp)
+		}
+	}
+
 	return false
 }
 
@@ -209,6 +233,12 @@ func (ph PassHash) ClearTOTP() (PassHash, error) {
 		return PassHash(strings.Join(split, "|")), nil
 	}
 
+	if version == 5 {
+		split := strings.Split(string(ph), "|")
+		split[2] = "0"
+		return PassHash(strings.Join(split, "|")), nil
+	}
+
 	return "", errors.New("unknown version")
 }
 
@@ -242,6 +272,12 @@ func (ph PassHash) WithTOTP(totpSecret []byte) (PassHash, error) {
 		return PassHash(strings.Join(split, "|")), nil
 	}
 
+	if version == 5 {
+		split := strings.Split(string(ph), "|")
+		split[2] = hex.EncodeToString(totpSecret)
+		return PassHash(strings.Join(split, "|")), nil
+	}
+
 	return "", errors.New("unknown version")
 }
 
@@ -271,6 +307,10 @@ func (ph PassHash) Change(newPlainPass string) (PassHash, error) {
 		return HashPasswordV4(newPlainPass, langext.Conditional(hastotp, totpsecret, nil))
 	}
 
+	if version == 5 {
+		return HashPasswordV5(newPlainPass, langext.Conditional(hastotp, totpsecret, nil))
+	}
+
 	return "", errors.New("unknown version")
 }
 
@@ -279,7 +319,24 @@ func (ph PassHash) String() string {
 }
 
 func HashPassword(plainpass string, totpSecret []byte) (PassHash, error) {
-	return HashPasswordV4(plainpass, totpSecret)
+	return HashPasswordV5(plainpass, totpSecret)
+}
+
+func HashPasswordV5(plainpass string, totpSecret []byte) (PassHash, error) {
+	var strtotp string
+
+	if totpSecret == nil {
+		strtotp = "0"
+	} else {
+		strtotp = hex.EncodeToString(totpSecret)
+	}
+
+	payload, err := bcrypt.GenerateFromPassword(hash512(plainpass), bcrypt.MinCost)
+	if err != nil {
+		return "", err
+	}
+
+	return PassHash(fmt.Sprintf("5|%s|%s", string(payload), strtotp)), nil
 }
 
 func HashPasswordV4(plainpass string, totpSecret []byte) (PassHash, error) {
@@ -340,6 +397,13 @@ func HashPasswordV0(plainpass string) (PassHash, error) {
 	return PassHash(fmt.Sprintf("0|%s", plainpass)), nil
 }
 
+func hash512(s string) []byte {
+	h := sha512.New()
+	h.Write([]byte(s))
+	bs := h.Sum(nil)
+	return bs
+}
+
 func hash256(s string) []byte {
 	h := sha256.New()
 	h.Write([]byte(s))

cryptext/passHash_test.go

@@ -0,0 +1,210 @@
+package cryptext
+
+import (
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"gogs.mikescher.com/BlackForestBytes/goext/totpext"
+	"gogs.mikescher.com/BlackForestBytes/goext/tst"
+	"testing"
+)
+
+func TestPassHash1(t *testing.T) {
+	ph, err := HashPassword("test123", nil)
+	tst.AssertNoErr(t, err)
+
+	tst.AssertTrue(t, ph.Valid())
+	tst.AssertFalse(t, ph.HasTOTP())
+	tst.AssertFalse(t, ph.NeedsPasswordUpgrade())
+
+	tst.AssertTrue(t, ph.Verify("test123", nil))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+}
+
+func TestPassHashTOTP(t *testing.T) {
+	sec, err := totpext.GenerateSecret()
+	tst.AssertNoErr(t, err)
+
+	ph, err := HashPassword("test123", sec)
+	tst.AssertNoErr(t, err)
+
+	tst.AssertTrue(t, ph.Valid())
+	tst.AssertTrue(t, ph.HasTOTP())
+	tst.AssertFalse(t, ph.NeedsPasswordUpgrade())
+
+	tst.AssertFalse(t, ph.Verify("test123", nil))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+	tst.AssertTrue(t, ph.Verify("test123", langext.Ptr(totpext.TOTP(sec))))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+}
+
+func TestPassHashUpgrade_V0(t *testing.T) {
+	ph, err := HashPasswordV0("test123")
+	tst.AssertNoErr(t, err)
+
+	tst.AssertTrue(t, ph.Valid())
+	tst.AssertFalse(t, ph.HasTOTP())
+	tst.AssertTrue(t, ph.NeedsPasswordUpgrade())
+
+	tst.AssertTrue(t, ph.Verify("test123", nil))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+
+	ph, err = ph.Upgrade("test123")
+	tst.AssertNoErr(t, err)
+
+	tst.AssertTrue(t, ph.Valid())
+	tst.AssertFalse(t, ph.HasTOTP())
+	tst.AssertFalse(t, ph.NeedsPasswordUpgrade())
+
+	tst.AssertTrue(t, ph.Verify("test123", nil))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+
+}
+
+func TestPassHashUpgrade_V1(t *testing.T) {
+	ph, err := HashPasswordV1("test123")
+	tst.AssertNoErr(t, err)
+
+	tst.AssertTrue(t, ph.Valid())
+	tst.AssertFalse(t, ph.HasTOTP())
+	tst.AssertTrue(t, ph.NeedsPasswordUpgrade())
+
+	tst.AssertTrue(t, ph.Verify("test123", nil))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+
+	ph, err = ph.Upgrade("test123")
+	tst.AssertNoErr(t, err)
+
+	tst.AssertTrue(t, ph.Valid())
+	tst.AssertFalse(t, ph.HasTOTP())
+	tst.AssertFalse(t, ph.NeedsPasswordUpgrade())
+
+	tst.AssertTrue(t, ph.Verify("test123", nil))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+
+}
+
+func TestPassHashUpgrade_V2(t *testing.T) {
+	ph, err := HashPasswordV2("test123")
+	tst.AssertNoErr(t, err)
+
+	tst.AssertTrue(t, ph.Valid())
+	tst.AssertFalse(t, ph.HasTOTP())
+	tst.AssertTrue(t, ph.NeedsPasswordUpgrade())
+
+	tst.AssertTrue(t, ph.Verify("test123", nil))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+
+	ph, err = ph.Upgrade("test123")
+	tst.AssertNoErr(t, err)
+
+	tst.AssertTrue(t, ph.Valid())
+	tst.AssertFalse(t, ph.HasTOTP())
+	tst.AssertFalse(t, ph.NeedsPasswordUpgrade())
+
+	tst.AssertTrue(t, ph.Verify("test123", nil))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+
+}
+
+func TestPassHashUpgrade_V3(t *testing.T) {
+	ph, err := HashPasswordV3("test123", nil)
+	tst.AssertNoErr(t, err)
+
+	tst.AssertTrue(t, ph.Valid())
+	tst.AssertFalse(t, ph.HasTOTP())
+	tst.AssertTrue(t, ph.NeedsPasswordUpgrade())
+
+	tst.AssertTrue(t, ph.Verify("test123", nil))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+
+	ph, err = ph.Upgrade("test123")
+	tst.AssertNoErr(t, err)
+
+	tst.AssertTrue(t, ph.Valid())
+	tst.AssertFalse(t, ph.HasTOTP())
+	tst.AssertFalse(t, ph.NeedsPasswordUpgrade())
+
+	tst.AssertTrue(t, ph.Verify("test123", nil))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+
+}
+
+func TestPassHashUpgrade_V3_TOTP(t *testing.T) {
+	sec, err := totpext.GenerateSecret()
+	tst.AssertNoErr(t, err)
+
+	ph, err := HashPasswordV3("test123", sec)
+	tst.AssertNoErr(t, err)
+
+	tst.AssertTrue(t, ph.Valid())
+	tst.AssertTrue(t, ph.HasTOTP())
+	tst.AssertTrue(t, ph.NeedsPasswordUpgrade())
+
+	tst.AssertFalse(t, ph.Verify("test123", nil))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+	tst.AssertTrue(t, ph.Verify("test123", langext.Ptr(totpext.TOTP(sec))))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+
+	ph, err = ph.Upgrade("test123")
+	tst.AssertNoErr(t, err)
+
+	tst.AssertTrue(t, ph.Valid())
+	tst.AssertTrue(t, ph.HasTOTP())
+	tst.AssertFalse(t, ph.NeedsPasswordUpgrade())
+
+	tst.AssertFalse(t, ph.Verify("test123", nil))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+	tst.AssertTrue(t, ph.Verify("test123", langext.Ptr(totpext.TOTP(sec))))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+}
+
+func TestPassHashUpgrade_V4(t *testing.T) {
+	ph, err := HashPasswordV4("test123", nil)
+	tst.AssertNoErr(t, err)
+
+	tst.AssertTrue(t, ph.Valid())
+	tst.AssertFalse(t, ph.HasTOTP())
+	tst.AssertTrue(t, ph.NeedsPasswordUpgrade())
+
+	tst.AssertTrue(t, ph.Verify("test123", nil))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+
+	ph, err = ph.Upgrade("test123")
+	tst.AssertNoErr(t, err)
+
+	tst.AssertTrue(t, ph.Valid())
+	tst.AssertFalse(t, ph.HasTOTP())
+	tst.AssertFalse(t, ph.NeedsPasswordUpgrade())
+
+	tst.AssertTrue(t, ph.Verify("test123", nil))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+
+}
+
+func TestPassHashUpgrade_V4_TOTP(t *testing.T) {
+	sec, err := totpext.GenerateSecret()
+	tst.AssertNoErr(t, err)
+
+	ph, err := HashPasswordV4("test123", sec)
+	tst.AssertNoErr(t, err)
+
+	tst.AssertTrue(t, ph.Valid())
+	tst.AssertTrue(t, ph.HasTOTP())
+	tst.AssertTrue(t, ph.NeedsPasswordUpgrade())
+
+	tst.AssertFalse(t, ph.Verify("test123", nil))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+	tst.AssertTrue(t, ph.Verify("test123", langext.Ptr(totpext.TOTP(sec))))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+
+	ph, err = ph.Upgrade("test123")
+	tst.AssertNoErr(t, err)
+
+	tst.AssertTrue(t, ph.Valid())
+	tst.AssertTrue(t, ph.HasTOTP())
+	tst.AssertFalse(t, ph.NeedsPasswordUpgrade())
+
+	tst.AssertFalse(t, ph.Verify("test123", nil))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+	tst.AssertTrue(t, ph.Verify("test123", langext.Ptr(totpext.TOTP(sec))))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+}

ginext/apiError.go

@@ -0,0 +1,16 @@
+package ginext
+
+type apiError struct {
+	ErrorCode        string  `json:"errorcode"`
+	Message          string  `json:"message"`
+	FAPIErrorMessage *string `json:"fapiMessage,omitempty"`
+}
+
+type extAPIError struct {
+	ErrorCode        string  `json:"errorcode"`
+	Message          string  `json:"message"`
+	FAPIErrorMessage *string `json:"fapiMessage,omitempty"`
+
+	RawError *string  `json:"__error"`
+	Trace    []string `json:"__trace"`
+}

ginext/apierr/enums.go

@@ -0,0 +1,21 @@
+package apierr
+
+type APIErrorCode struct {
+	HTTPStatusCode int
+	Key            string
+}
+
+//goland:noinspection GoSnakeCaseUsage
+var (
+	NotImplemented = APIErrorCode{500, "NOT_IMPLEMENTED"}
+	InternalError  = APIErrorCode{500, "INTERNAL_ERROR"}
+	Panic          = APIErrorCode{500, "PANIC"}
+
+	BindFailURI      = APIErrorCode{400, "BINDFAIL_URI"}
+	BindFailQuery    = APIErrorCode{400, "BINDFAIL_QUERY"}
+	BindFailJSON     = APIErrorCode{400, "BINDFAIL_JSON"}
+	BindFailFormData = APIErrorCode{400, "BINDFAIL_FORMDATA"}
+
+	Unauthorized = APIErrorCode{401, "UNAUTHORIZED"}
+	AuthFailed   = APIErrorCode{401, "AUTH_FAILED"}
+)

ginext/commonHandler.go

@@ -0,0 +1,24 @@
+package ginext
+
+import (
+	"github.com/gin-gonic/gin"
+	"net/http"
+)
+
+func RedirectFound(newuri string) gin.HandlerFunc {
+	return func(g *gin.Context) {
+		g.Redirect(http.StatusFound, newuri)
+	}
+}
+
+func RedirectTemporary(newuri string) gin.HandlerFunc {
+	return func(g *gin.Context) {
+		g.Redirect(http.StatusTemporaryRedirect, newuri)
+	}
+}
+
+func RedirectPermanent(newuri string) gin.HandlerFunc {
+	return func(g *gin.Context) {
+		g.Redirect(http.StatusPermanentRedirect, newuri)
+	}
+}

ginext/cors.go

@@ -0,0 +1,21 @@
+package ginext
+
+import (
+	"github.com/gin-gonic/gin"
+	"net/http"
+)
+
+func CorsMiddleware() gin.HandlerFunc {
+	return func(c *gin.Context) {
+		c.Writer.Header().Set("Access-Control-Allow-Origin", "*")
+		c.Writer.Header().Set("Access-Control-Allow-Credentials", "true")
+		c.Writer.Header().Set("Access-Control-Allow-Headers", "Content-Type, Content-Length, Accept-Encoding, X-CSRF-Token, Authorization, accept, origin, Cache-Control, X-Requested-With")
+		c.Writer.Header().Set("Access-Control-Allow-Methods", "OPTIONS, GET, POST, PUT, PATCH, DELETE, COUNT")
+
+		if c.Request.Method == "OPTIONS" {
+			c.AbortWithStatus(http.StatusOK)
+		} else {
+			c.Next()
+		}
+	}
+}

ginext/engine.go

@@ -0,0 +1,42 @@
+package ginext
+
+import "github.com/gin-gonic/gin"
+
+type GinWrapper struct {
+	engine          *gin.Engine
+	SuppressGinLogs bool
+
+	allowCors       bool
+	ginDebug        bool
+	returnRawErrors bool
+}
+
+func NewEngine(allowCors bool, ginDebug bool, returnRawErrors bool) *GinWrapper {
+	engine := gin.New()
+
+	wrapper := &GinWrapper{
+		engine:          engine,
+		SuppressGinLogs: false,
+		allowCors:       allowCors,
+		ginDebug:        ginDebug,
+		returnRawErrors: returnRawErrors,
+	}
+
+	engine.RedirectFixedPath = false
+	engine.RedirectTrailingSlash = false
+
+	if allowCors {
+		engine.Use(CorsMiddleware())
+	}
+
+	if ginDebug {
+		ginlogger := gin.Logger()
+		engine.Use(func(context *gin.Context) {
+			if !wrapper.SuppressGinLogs {
+				ginlogger(context)
+			}
+		})
+	}
+
+	return wrapper
+}

ginext/funcWrapper.go

@@ -0,0 +1,53 @@
+package ginext
+
+import (
+	"errors"
+	"fmt"
+	"github.com/gin-gonic/gin"
+	"github.com/rs/zerolog/log"
+	"gogs.mikescher.com/BlackForestBytes/goext/ginext/apierr"
+	"runtime/debug"
+)
+
+type WHandlerFunc func(*gin.Context) HTTPResponse
+
+func Wrap(w *GinWrapper, fn WHandlerFunc) gin.HandlerFunc {
+
+	return func(g *gin.Context) {
+
+		g.Set("__returnRawErrors", w.returnRawErrors)
+
+		reqctx := g.Request.Context()
+
+		wrap, stackTrace, panicObj := callPanicSafe(fn, g)
+		if panicObj != nil {
+			fmt.Printf("\n======== ======== STACKTRACE ======== ========\n%s\n======== ======== ======== ========\n\n", stackTrace)
+			log.Error().
+				Interface("panicObj", panicObj).
+				Str("trace", stackTrace).
+				Msg("Panic occured (in gin handler)")
+			wrap = APIError(g, apierr.Panic, "A panic occured in the HTTP handler", errors.New(fmt.Sprintf("%+v", panicObj)))
+		}
+
+		if g.Writer.Written() {
+			panic("Writing in WrapperFunc is not supported")
+		}
+
+		if reqctx.Err() == nil {
+			wrap.Write(g)
+		}
+	}
+}
+
+func callPanicSafe(fn WHandlerFunc, g *gin.Context) (res HTTPResponse, stackTrace string, panicObj any) {
+	defer func() {
+		if rec := recover(); rec != nil {
+			res = nil
+			stackTrace = string(debug.Stack())
+			panicObj = rec
+		}
+	}()
+
+	res = fn(g)
+	return res, "", nil
+}

ginext/resp.go

@@ -0,0 +1,141 @@
+package ginext
+
+import (
+	"fmt"
+	"github.com/gin-gonic/gin"
+	"github.com/rs/zerolog/log"
+	"gogs.mikescher.com/BlackForestBytes/goext/ginext/apierr"
+	json "gogs.mikescher.com/BlackForestBytes/goext/gojson"
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"runtime/debug"
+	"strings"
+)
+
+type HTTPResponse interface {
+	Write(g *gin.Context)
+}
+
+type jsonHTTPResponse struct {
+	statusCode int
+	data       any
+}
+
+func (j jsonHTTPResponse) Write(g *gin.Context) {
+	g.Render(j.statusCode, json.GoJsonRender{Data: j.data, NilSafeSlices: true, NilSafeMaps: true})
+}
+
+type emptyHTTPResponse struct {
+	statusCode int
+}
+
+func (j emptyHTTPResponse) Write(g *gin.Context) {
+	g.Status(j.statusCode)
+}
+
+type textHTTPResponse struct {
+	statusCode int
+	data       string
+}
+
+func (j textHTTPResponse) Write(g *gin.Context) {
+	g.String(j.statusCode, "%s", j.data)
+}
+
+type dataHTTPResponse struct {
+	statusCode  int
+	data        []byte
+	contentType string
+}
+
+func (j dataHTTPResponse) Write(g *gin.Context) {
+	g.Data(j.statusCode, j.contentType, j.data)
+}
+
+type fileHTTPResponse struct {
+	mimetype string
+	filepath string
+	filename *string
+}
+
+func (j fileHTTPResponse) Write(g *gin.Context) {
+	g.Header("Content-Type", j.mimetype) // if we don't set it here gin does weird file-sniffing later...
+	if j.filename != nil {
+		g.Header("Content-Disposition", fmt.Sprintf("attachment; filename=\"%s\"", *j.filename))
+
+	}
+	g.File(j.filepath)
+}
+
+func Status(sc int) HTTPResponse {
+	return &emptyHTTPResponse{statusCode: sc}
+}
+
+func JSON(sc int, data any) HTTPResponse {
+	return &jsonHTTPResponse{statusCode: sc, data: data}
+}
+
+func Data(sc int, contentType string, data []byte) HTTPResponse {
+	return &dataHTTPResponse{statusCode: sc, contentType: contentType, data: data}
+}
+
+func Text(sc int, data string) HTTPResponse {
+	return &textHTTPResponse{statusCode: sc, data: data}
+}
+
+func File(mimetype string, filepath string) HTTPResponse {
+	return &fileHTTPResponse{mimetype: mimetype, filepath: filepath}
+}
+
+func Download(mimetype string, filepath string, filename string) HTTPResponse {
+	return &fileHTTPResponse{mimetype: mimetype, filepath: filepath, filename: &filename}
+}
+
+func APIError(g *gin.Context, errcode apierr.APIErrorCode, msg string, e error) HTTPResponse {
+	return createApiError(g, errcode, msg, e)
+}
+
+func NotImplemented(g *gin.Context) HTTPResponse {
+	return createApiError(g, apierr.NotImplemented, "", nil)
+}
+
+func createApiError(g *gin.Context, errcode apierr.APIErrorCode, msg string, e error) HTTPResponse {
+	reqUri := ""
+	if g != nil && g.Request != nil {
+		reqUri = g.Request.Method + " :: " + g.Request.RequestURI
+	}
+
+	log.Error().
+		Str("errorcode.key", errcode.Key).
+		Int("errcode.status", errcode.HTTPStatusCode).
+		Str("uri", reqUri).
+		AnErr("err", e).
+		Stack().
+		Msg(msg)
+
+	var fapiMessage *string = nil
+	if v, ok := e.(interface{ FAPIMessage() string }); ok {
+		fapiMessage = langext.Ptr(v.FAPIMessage())
+	}
+
+	if g.GetBool("__returnRawErrors") {
+		return &jsonHTTPResponse{
+			statusCode: errcode.HTTPStatusCode,
+			data: extAPIError{
+				ErrorCode:        errcode.Key,
+				Message:          msg,
+				RawError:         langext.Ptr(langext.Conditional(e == nil, "", fmt.Sprintf("%+v", e))),
+				FAPIErrorMessage: fapiMessage,
+				Trace:            strings.Split(string(debug.Stack()), "\n"),
+			},
+		}
+	} else {
+		return &jsonHTTPResponse{
+			statusCode: errcode.HTTPStatusCode,
+			data: apiError{
+				ErrorCode:        errcode.Key,
+				Message:          msg,
+				FAPIErrorMessage: fapiMessage,
+			},
+		}
+	}
+}

ginext/routes.go

@@ -0,0 +1,68 @@
+package ginext
+
+import (
+	"github.com/gin-gonic/gin"
+	"net/http"
+)
+
+type GinRoutesWrapper struct {
+	wrapper *GinWrapper
+	routes  gin.IRouter
+}
+
+type GinRouteBuilder struct {
+	routes *GinRoutesWrapper
+
+	method   string
+	relPath  string
+	handlers []gin.HandlerFunc
+}
+
+func (w *GinWrapper) Routes() *GinRoutesWrapper {
+	return &GinRoutesWrapper{wrapper: w, routes: w.engine}
+}
+
+func (w *GinRoutesWrapper) Group(relativePath string) *GinRoutesWrapper {
+	return &GinRoutesWrapper{wrapper: w.wrapper, routes: w.routes.Group(relativePath)}
+}
+
+func (w *GinRoutesWrapper) GET(relativePath string) *GinRouteBuilder {
+	return &GinRouteBuilder{routes: w, method: http.MethodGet, relPath: relativePath, handlers: make([]gin.HandlerFunc, 0)}
+}
+
+func (w *GinRoutesWrapper) POST(relativePath string) *GinRouteBuilder {
+	return &GinRouteBuilder{routes: w, method: http.MethodPost, relPath: relativePath, handlers: make([]gin.HandlerFunc, 0)}
+}
+
+func (w *GinRoutesWrapper) DELETE(relativePath string) *GinRouteBuilder {
+	return &GinRouteBuilder{routes: w, method: http.MethodDelete, relPath: relativePath, handlers: make([]gin.HandlerFunc, 0)}
+}
+
+func (w *GinRoutesWrapper) PATCH(relativePath string) *GinRouteBuilder {
+	return &GinRouteBuilder{routes: w, method: http.MethodPatch, relPath: relativePath, handlers: make([]gin.HandlerFunc, 0)}
+}
+
+func (w *GinRoutesWrapper) PUT(relativePath string) *GinRouteBuilder {
+	return &GinRouteBuilder{routes: w, method: http.MethodPut, relPath: relativePath, handlers: make([]gin.HandlerFunc, 0)}
+}
+
+func (w *GinRoutesWrapper) OPTIONS(relativePath string) *GinRouteBuilder {
+	return &GinRouteBuilder{routes: w, method: http.MethodOptions, relPath: relativePath, handlers: make([]gin.HandlerFunc, 0)}
+}
+
+func (w *GinRoutesWrapper) HEAD(relativePath string) *GinRouteBuilder {
+	return &GinRouteBuilder{routes: w, method: http.MethodHead, relPath: relativePath, handlers: make([]gin.HandlerFunc, 0)}
+}
+
+func (w *GinRoutesWrapper) COUNT(relativePath string) *GinRouteBuilder {
+	return &GinRouteBuilder{routes: w, method: "COUNT", relPath: relativePath, handlers: make([]gin.HandlerFunc, 0)}
+}
+
+func (w *GinRouteBuilder) Use(middleware gin.HandlerFunc) *GinRouteBuilder {
+	w.handlers = append(w.handlers, middleware)
+	return w
+}
+func (w *GinRouteBuilder) Handle(handler WHandlerFunc) {
+	w.handlers = append(w.handlers, Wrap(w.routes.wrapper, handler))
+	w.routes.routes.Handle(w.method, w.relPath, w.handlers...)
+}

go.mod

@@ -3,22 +3,47 @@ module gogs.mikescher.com/BlackForestBytes/goext
 go 1.19
 
 require (
+	github.com/gin-gonic/gin v1.9.1
 	github.com/jmoiron/sqlx v1.3.5
-	go.mongodb.org/mongo-driver v1.11.7
+	github.com/rs/zerolog v1.29.1
-	golang.org/x/crypto v0.9.0
+	go.mongodb.org/mongo-driver v1.12.0
-	golang.org/x/sys v0.8.0
+	golang.org/x/crypto v0.11.0
-	golang.org/x/term v0.8.0
+	golang.org/x/sys v0.10.0
+	golang.org/x/term v0.10.0
 )
 
 require (
+	github.com/bytedance/sonic v1.10.0-rc2 // 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/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 v10.14.1 // indirect
+	github.com/goccy/go-json v0.10.2 // indirect
 	github.com/golang/snappy v0.0.4 // indirect
-	github.com/klauspost/compress v1.16.5 // indirect
+	github.com/json-iterator/go v1.1.12 // indirect
+	github.com/klauspost/compress v1.16.7 // indirect
+	github.com/klauspost/cpuid/v2 v2.2.5 // 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/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 v2.0.9 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
+	github.com/twitchyliquid64/golang-asm v0.15.1 // indirect
+	github.com/ugorji/go/codec v1.2.11 // 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/sync v0.2.0 // indirect
+	golang.org/x/arch v0.4.0 // indirect
-	golang.org/x/text v0.9.0 // indirect
+	golang.org/x/net v0.12.0 // indirect
+	golang.org/x/sync v0.3.0 // indirect
+	golang.org/x/text v0.11.0 // indirect
+	google.golang.org/protobuf v1.31.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
 )

go.sum

@@ -1,42 +1,124 @@
+github.com/bytedance/sonic v1.5.0/go.mod h1:ED5hyg4y6t3/9Ku1R6dU/4KyJ48DZ4jPhfY1O2AihPM=
+github.com/bytedance/sonic v1.9.1 h1:6iJ6NqdoxCDr6mbY8h18oSO+cShGSMRGCEo7F2h0x8s=
+github.com/bytedance/sonic v1.9.1/go.mod h1:i736AoUSYt75HyZLoJW9ERYxcy6eaN6h4BZXU064P/U=
+github.com/bytedance/sonic v1.10.0-rc/go.mod h1:ElCzW+ufi8qKqNW0FY314xriJhyJhuoJ3gFZdAHF7NM=
+github.com/bytedance/sonic v1.10.0-rc2 h1:oDfRZ+4m6AYCOC0GFeOCeYqvBmucy1isvouS2K0cPzo=
+github.com/bytedance/sonic v1.10.0-rc2/go.mod h1:iZcSUejdk5aukTND/Eu/ivjQuEL0Cu9/rf50Hi0u/g4=
+github.com/chenzhuoyu/base64x v0.0.0-20211019084208-fb5309c8db06/go.mod h1:DH46F32mSOjUmXrMHnKwZdA8wcEefY7UVqBKYGjpdQY=
+github.com/chenzhuoyu/base64x v0.0.0-20221115062448-fe3a3abad311 h1:qSGYFH7+jGhDF8vLC+iwCD4WpbV1EBDSzWkJODFLams=
+github.com/chenzhuoyu/base64x v0.0.0-20221115062448-fe3a3abad311/go.mod h1:b583jCggY9gE99b6G5LEC39OIiVsWj+R97kbl5odCEk=
+github.com/chenzhuoyu/base64x v0.0.0-20230717121745-296ad89f973d h1:77cEq6EriyTZ0g/qfRdp61a3Uu/AWrgIq2s0ClJV1g0=
+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/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=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/gabriel-vasile/mimetype v1.4.2 h1:w5qFW6JKBz9Y393Y4q372O9A7cUSequkh1Q7OhCmWKU=
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 github.com/go-sql-driver/mysql v1.6.0 h1:BCTh4TKNUYmOmMUcQ3IipzF5prigylS7XXjEkfCHuOE=
 github.com/go-sql-driver/mysql v1.6.0/go.mod h1:DCzpHaOWr8IXmIStZouvnhqoel9Qv2LBy8hT2VhHyBg=
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@@ -56,6 +138,13 @@ go.mongodb.org/mongo-driver v1.11.1 h1:QP0znIRTuL0jf1oBQoAoM0C6ZJfBK4kx0Uumtv1A7
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@@ -64,35 +153,59 @@ golang.org/x/crypto v0.4.0 h1:UVQgzMY87xqpKNgb+kDsll2Igd33HszWHFLmpaRMq/8=
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@@ -100,16 +213,28 @@ golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
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 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 v1.30.0 h1:kPPoIgf3TsEvrm0PFe15JQ+570QVxYzEvvHqChK+cng=
+google.golang.org/protobuf v1.30.0/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
+google.golang.org/protobuf v1.31.0 h1:g0LDEJHgrBl9N9r17Ru3sqWhkIx2NB67okBHPwC7hs8=
+google.golang.org/protobuf v1.31.0/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
 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=
+nullprogram.com/x/optparse v1.0.0/go.mod h1:KdyPE+Igbe0jQUrVfMqDMeJQIJZEuyV7pjYmp6pbG50=
+rsc.io/pdf v0.1.1/go.mod h1:n8OzWcQ6Sp37PL01nO98y4iUCRdTGarVfzxY20ICaU4=

goextVersion.go

@@ -1,5 +1,5 @@
 package goext
 
-const GoextVersion = "0.0.147"
+const GoextVersion = "0.0.172"
 
-const GoextVersionTimestamp = "2023-06-07T16:58:17+0200"
+const GoextVersionTimestamp = "2023-07-18T14:40:10+0200"

mongoext/registry.go

@@ -16,6 +16,9 @@ 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.Date{}), rfctime.Date{})
+	rb.RegisterTypeDecoder(reflect.TypeOf(&rfctime.Date{}), rfctime.Date{})
+
 	bsoncodec.DefaultValueEncoders{}.RegisterDefaultEncoders(rb)
 	bsoncodec.DefaultValueDecoders{}.RegisterDefaultDecoders(rb)
 

reflectext/primitiveStringSerializer.go

@@ -50,6 +50,10 @@ func (pss PrimitiveStringSerializer) ValueFromString(str string, outType reflect
 		return reflect.Zero(outType).Interface(), nil // = nil.(outType), nil
 	}
 
+	if str == "" {
+		return reflect.Zero(outType).Interface(), nil // = <default>(outType), nil
+	}
+
 	if outType.Kind() == reflect.Ptr {
 
 		innerValue, err := pss.ValueFromString(str, outType.Elem())

rfctime/date.go

@@ -0,0 +1,240 @@
+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"
+	"time"
+)
+
+type Date struct {
+	Year  int
+	Month int
+	Day   int
+}
+
+func (t Date) Time(loc *time.Location) time.Time {
+	return time.Date(t.Year, time.Month(t.Month), t.Day, 0, 0, 0, 0, loc)
+}
+
+func (t Date) TimeUTC() time.Time {
+	return time.Date(t.Year, time.Month(t.Month), t.Day, 0, 0, 0, 0, time.UTC)
+}
+
+func (t Date) TimeLocal() time.Time {
+	return time.Date(t.Year, time.Month(t.Month), t.Day, 0, 0, 0, 0, time.Local)
+}
+
+func (t Date) MarshalBinary() ([]byte, error) {
+	return t.TimeUTC().MarshalBinary()
+}
+
+func (t *Date) UnmarshalBinary(data []byte) error {
+	nt := time.Time{}
+	if err := nt.UnmarshalBinary(data); err != nil {
+		return err
+	}
+	t.Year = nt.Year()
+	t.Month = int(nt.Month())
+	t.Day = nt.Day()
+	return nil
+}
+
+func (t Date) GobEncode() ([]byte, error) {
+	return t.TimeUTC().GobEncode()
+}
+
+func (t *Date) GobDecode(data []byte) error {
+	nt := time.Time{}
+	if err := nt.GobDecode(data); err != nil {
+		return err
+	}
+	t.Year = nt.Year()
+	t.Month = int(nt.Month())
+	t.Day = nt.Day()
+	return nil
+}
+
+func (t *Date) UnmarshalJSON(data []byte) error {
+	str := ""
+	if err := json.Unmarshal(data, &str); err != nil {
+		return err
+	}
+	t0, err := time.Parse(t.FormatStr(), str)
+	if err != nil {
+		return err
+	}
+	t.Year = t0.Year()
+	t.Month = int(t0.Month())
+	t.Day = t0.Day()
+	return nil
+}
+
+func (t Date) MarshalJSON() ([]byte, error) {
+	str := t.TimeUTC().Format(t.FormatStr())
+	return json.Marshal(str)
+}
+
+func (t Date) MarshalText() ([]byte, error) {
+	b := make([]byte, 0, len(t.FormatStr()))
+	return t.TimeUTC().AppendFormat(b, t.FormatStr()), nil
+}
+
+func (t *Date) UnmarshalText(data []byte) error {
+	var err error
+	v, err := time.Parse(t.FormatStr(), string(data))
+	if err != nil {
+		return err
+	}
+	t.Year = v.Year()
+	t.Month = int(v.Month())
+	t.Day = v.Day()
+	return nil
+}
+
+func (t *Date) UnmarshalBSONValue(bt bsontype.Type, data []byte) error {
+	if bt == bsontype.Null {
+		// 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 = Date{}
+		return nil
+	}
+	if bt != bsontype.String {
+		return errors.New(fmt.Sprintf("cannot unmarshal %v into Date", bt))
+	}
+
+	var tt string
+	err := bson.RawValue{Type: bt, Value: data}.Unmarshal(&tt)
+	if err != nil {
+		return err
+	}
+
+	v, err := time.Parse(t.FormatStr(), tt)
+	if err != nil {
+		return err
+	}
+	t.Year = v.Year()
+	t.Month = int(v.Month())
+	t.Day = v.Day()
+
+	return nil
+}
+
+func (t Date) MarshalBSONValue() (bsontype.Type, []byte, error) {
+	return bson.MarshalValue(t.TimeUTC().Format(t.FormatStr()))
+}
+
+func (t Date) 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 Date) Serialize() string {
+	return t.TimeUTC().Format(t.FormatStr())
+}
+
+func (t Date) FormatStr() string {
+	return "2006-01-02"
+}
+
+func (t Date) Date() (year int, month time.Month, day int) {
+	return t.TimeUTC().Date()
+}
+
+func (t Date) Weekday() time.Weekday {
+	return t.TimeUTC().Weekday()
+}
+
+func (t Date) ISOWeek() (year, week int) {
+	return t.TimeUTC().ISOWeek()
+}
+
+func (t Date) YearDay() int {
+	return t.TimeUTC().YearDay()
+}
+
+func (t Date) AddDate(years int, months int, days int) Date {
+	return NewDate(t.TimeUTC().AddDate(years, months, days))
+}
+
+func (t Date) Unix() int64 {
+	return t.TimeUTC().Unix()
+}
+
+func (t Date) UnixMilli() int64 {
+	return t.TimeUTC().UnixMilli()
+}
+
+func (t Date) UnixMicro() int64 {
+	return t.TimeUTC().UnixMicro()
+}
+
+func (t Date) UnixNano() int64 {
+	return t.TimeUTC().UnixNano()
+}
+
+func (t Date) Format(layout string) string {
+	return t.TimeUTC().Format(layout)
+}
+
+func (t Date) GoString() string {
+	return t.TimeUTC().GoString()
+}
+
+func (t Date) String() string {
+	return t.TimeUTC().String()
+}
+
+func NewDate(t time.Time) Date {
+	return Date{
+		Year:  t.Year(),
+		Month: int(t.Month()),
+		Day:   t.Day(),
+	}
+}
+
+func NowDate(loc *time.Location) Date {
+	return NewDate(time.Now().In(loc))
+}
+
+func NowDateLoc() Date {
+	return NewDate(time.Now().In(time.UTC))
+}
+
+func NowDateUTC() Date {
+	return NewDate(time.Now().In(time.Local))
+}

tst/assertions.go

@@ -2,6 +2,7 @@ package tst
 
 import (
 	"encoding/hex"
+	"runtime/debug"
 	"testing"
 )
 
@@ -54,12 +55,18 @@ func AssertHexEqual(t *testing.T, expected string, actual []byte) {
 
 func AssertTrue(t *testing.T, value bool) {
 	if !value {
-		t.Error("value should be true")
+		t.Error("value should be true\n" + string(debug.Stack()))
 	}
 }
 
 func AssertFalse(t *testing.T, value bool) {
 	if value {
-		t.Error("value should be false")
+		t.Error("value should be false\n" + string(debug.Stack()))
+	}
+}
+
+func AssertNoErr(t *testing.T, anerr error) {
+	if anerr != nil {
+		t.Error("Function returned an error: " + anerr.Error() + "\n" + string(debug.Stack()))
 	}
 }

wmo/collection.go

@@ -2,15 +2,32 @@ package wmo
 
 import (
 	"context"
+	"go.mongodb.org/mongo-driver/bson/bsontype"
 	"go.mongodb.org/mongo-driver/mongo"
 	ct "gogs.mikescher.com/BlackForestBytes/goext/cursortoken"
 	"gogs.mikescher.com/BlackForestBytes/goext/langext"
 	"reflect"
 )
 
-type EntityID = any
+type EntityID interface {
+	MarshalBSONValue() (bsontype.Type, []byte, error)
+	String() string
+}
 
-type fullTypeRef[TData any] struct {
+type Decodable interface {
+	Decode(v any) error
+}
+
+type Cursorable interface {
+	Decode(v any) error
+	Err() error
+	Close(ctx context.Context) error
+	All(ctx context.Context, results any) error
+	RemainingBatchLength() int
+	Next(ctx context.Context) bool
+}
+
+type fullTypeRef struct {
 	IsPointer      bool
 	Kind           reflect.Kind
 	RealType       reflect.Type
@@ -21,8 +38,11 @@ type fullTypeRef[TData any] struct {
 }
 
 type Coll[TData any] struct {
-	coll        *mongo.Collection
+	coll                *mongo.Collection                                        // internal mongo collection, access via Collection()
-	dataTypeMap map[string]fullTypeRef[TData]
+	dataTypeMap         map[string]fullTypeRef                                   // list of TData fields (only if TData is not an interface)
+	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)
 }
 
 func (c *Coll[TData]) Collection() *mongo.Collection {
@@ -33,6 +53,14 @@ 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()
 }

wmo/decoding.go

@@ -0,0 +1,54 @@
+package wmo
+
+import (
+	"context"
+)
+
+func (c *Coll[TData]) decodeSingle(ctx context.Context, dec Decodable) (TData, error) {
+	if c.customDecoder != nil {
+
+		return (*c.customDecoder)(ctx, dec)
+
+	} else {
+
+		var res TData
+
+		err := dec.Decode(&res)
+		if err != nil {
+			return *new(TData), err
+		}
+
+		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())
+
+		for cursor.Next(ctx) {
+			entry, err := (*c.customDecoder)(ctx, cursor)
+			if err != nil {
+				return nil, err
+			}
+			res = append(res, entry)
+		}
+
+		return res, nil
+
+	} else {
+
+		res := make([]TData, 0, cursor.RemainingBatchLength())
+
+		err := cursor.All(ctx, &res)
+		if err != nil {
+			return nil, err
+		}
+
+		return res, nil
+
+	}
+
+}

wmo/pagination.go

@@ -69,7 +69,7 @@ func CreatePagination[TData any](coll *Coll[TData], token ct.CursorToken, fieldP
 	} else if token.Mode == ct.CTMEnd {
 
 		// false
-		pipeline = append(pipeline, bson.D{{Key: "$match", Value: bson.M{"$eq": bson.A{"1", "0"}}}})
+		pipeline = append(pipeline, bson.D{{Key: "$match", Value: bson.M{"$expr": bson.M{"$eq": bson.A{"1", "0"}}}}})
 
 	} else {
 

wmo/queryAggregate.go

@@ -2,6 +2,7 @@ package wmo
 
 import (
 	"context"
+	"errors"
 	"go.mongodb.org/mongo-driver/mongo"
 	"go.mongodb.org/mongo-driver/mongo/options"
 )
@@ -12,11 +13,44 @@ func (c *Coll[TData]) Aggregate(ctx context.Context, pipeline mongo.Pipeline, op
 		return nil, err
 	}
 
-	res := make([]TData, 0, cursor.RemainingBatchLength())
+	res, err := c.decodeAll(ctx, cursor)
-	err = cursor.All(ctx, &res)
 	if err != nil {
 		return nil, err
 	}
 
 	return res, nil
 }
+
+func (c *Coll[TData]) AggregateOneOpt(ctx context.Context, pipeline mongo.Pipeline, opts ...*options.AggregateOptions) (*TData, error) {
+	cursor, err := c.coll.Aggregate(ctx, pipeline, opts...)
+	if err != nil {
+		return nil, err
+	}
+
+	if cursor.Next(ctx) {
+		v, err := c.decodeSingle(ctx, cursor)
+		if err != nil {
+			return nil, err
+		}
+		return &v, nil
+	}
+
+	return nil, nil
+}
+
+func (c *Coll[TData]) AggregateOne(ctx context.Context, pipeline mongo.Pipeline, opts ...*options.AggregateOptions) (TData, error) {
+	cursor, err := c.coll.Aggregate(ctx, pipeline, opts...)
+	if err != nil {
+		return *new(TData), err
+	}
+
+	if cursor.Next(ctx) {
+		v, err := c.decodeSingle(ctx, cursor)
+		if err != nil {
+			return *new(TData), err
+		}
+		return v, nil
+	}
+
+	return *new(TData), errors.New("no document in result")
+}

wmo/queryDelete.go

@@ -6,7 +6,7 @@ import (
 	"go.mongodb.org/mongo-driver/mongo"
 )
 
-func (c *Coll[TData]) DeleteOne(ctx context.Context, id EntityID) error {
+func (c *Coll[TData]) DeleteOneByID(ctx context.Context, id EntityID) error {
 	_, err := c.coll.DeleteOne(ctx, bson.M{"_id": id})
 	if err != nil {
 		return err
@@ -15,6 +15,15 @@ func (c *Coll[TData]) DeleteOne(ctx context.Context, id EntityID) error {
 	return nil
 }
 
+func (c *Coll[TData]) DeleteOne(ctx context.Context, filterQuery bson.M) error {
+	_, err := c.coll.DeleteOne(ctx, filterQuery)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
 func (c *Coll[TData]) DeleteMany(ctx context.Context, filterQuery bson.M) (*mongo.DeleteResult, error) {
 	res, err := c.coll.DeleteMany(ctx, filterQuery)
 	if err != nil {

wmo/queryFind.go

@@ -8,20 +8,15 @@ import (
 )
 
 func (c *Coll[TData]) FindOne(ctx context.Context, filter bson.M) (TData, error) {
-	var res TData
+	mongoRes := c.coll.FindOne(ctx, filter)
 
-	err := c.coll.FindOne(ctx, filter).Decode(&res)
+	return c.decodeSingle(ctx, mongoRes)
-	if err != nil {
-		return *new(TData), err
-	}
-
-	return res, nil
 }
 
 func (c *Coll[TData]) FindOneOpt(ctx context.Context, filter bson.M) (*TData, error) {
-	var res TData
+	mongoRes := c.coll.FindOne(ctx, filter)
 
-	err := c.coll.FindOne(ctx, filter).Decode(&res)
+	res, err := c.decodeSingle(ctx, mongoRes)
 	if err == mongo.ErrNoDocuments {
 		return nil, nil
 	}
@@ -33,20 +28,15 @@ func (c *Coll[TData]) FindOneOpt(ctx context.Context, filter bson.M) (*TData, er
 }
 
 func (c *Coll[TData]) FindOneByID(ctx context.Context, id EntityID) (TData, error) {
-	var res TData
+	mongoRes := c.coll.FindOne(ctx, bson.M{"_id": id})
 
-	err := c.coll.FindOne(ctx, bson.M{"_id": id}).Decode(&res)
+	return c.decodeSingle(ctx, mongoRes)
-	if err != nil {
-		return *new(TData), err
-	}
-
-	return res, nil
 }
 
 func (c *Coll[TData]) FindOneOptByID(ctx context.Context, id EntityID) (*TData, error) {
-	var res TData
+	mongoRes := c.coll.FindOne(ctx, bson.M{"_id": id})
 
-	err := c.coll.FindOne(ctx, bson.M{"_id": id}).Decode(&res)
+	res, err := c.decodeSingle(ctx, mongoRes)
 	if err == mongo.ErrNoDocuments {
 		return nil, nil
 	}
@@ -63,8 +53,7 @@ func (c *Coll[TData]) Find(ctx context.Context, filter bson.M, opts ...*options.
 		return nil, err
 	}
 
-	res := make([]TData, 0, cursor.RemainingBatchLength())
+	res, err := c.decodeAll(ctx, cursor)
-	err = cursor.All(ctx, &res)
 	if err != nil {
 		return nil, err
 	}

wmo/queryInsert.go

@@ -11,12 +11,7 @@ func (c *Coll[TData]) InsertOne(ctx context.Context, valueIn TData) (TData, erro
 		return *new(TData), err
 	}
 
-	var res TData
+	mongoRes := c.coll.FindOne(ctx, bson.M{"_id": insRes.InsertedID})
 
-	err = c.coll.FindOne(ctx, bson.M{"_id": insRes.InsertedID}).Decode(&res)
+	return c.decodeSingle(ctx, mongoRes)
-	if err != nil {
-		return *new(TData), err
-	}
-
-	return res, nil
 }

wmo/queryList.go

@@ -3,6 +3,7 @@ package wmo
 import (
 	"context"
 	"go.mongodb.org/mongo-driver/bson"
+	"go.mongodb.org/mongo-driver/mongo"
 	ct "gogs.mikescher.com/BlackForestBytes/goext/cursortoken"
 )
 
@@ -11,9 +12,16 @@ func (c *Coll[TData]) List(ctx context.Context, filter ct.Filter, pageSize *int,
 		return make([]TData, 0), ct.End(), nil
 	}
 
-	pipeline := filter.FilterQuery()
+	pipeline := mongo.Pipeline{}
+	pf1 := "_id"
+	pd1 := ct.SortASC
+	pf2 := "_id"
+	pd2 := ct.SortASC
 
-	pf1, pd1, pf2, pd2 := filter.Pagination()
+	if filter != nil {
+		pipeline = filter.FilterQuery()
+		pf1, pd1, pf2, pd2 = filter.Pagination()
+	}
 
 	sortPrimary := pf1
 	sortDirPrimary := pd1
@@ -37,23 +45,37 @@ func (c *Coll[TData]) List(ctx context.Context, filter ct.Filter, pageSize *int,
 		return nil, ct.CursorToken{}, err
 	}
 
-	entities := make([]TData, 0, cursor.RemainingBatchLength()+1)
+	// fast branch
+	if pageSize == nil {
+		entries, err := c.decodeAll(ctx, cursor)
+		if err != nil {
+			return nil, ct.CursorToken{}, err
+		}
+		return entries, ct.End(), nil
+	}
+
+	entities := make([]TData, 0, cursor.RemainingBatchLength())
 	for (pageSize == nil || len(entities) != *pageSize) && cursor.Next(ctx) {
 		var entry TData
-		err = cursor.Decode(&entry)
+		entry, err = c.decodeSingle(ctx, cursor)
 		if err != nil {
 			return nil, ct.CursorToken{}, err
 		}
 		entities = append(entities, entry)
 	}
 
-	if pageSize == nil || len(entities) <= *pageSize || !cursor.TryNext(ctx) {
+	if pageSize == nil || len(entities) < *pageSize || !cursor.TryNext(ctx) {
 		return entities, ct.End(), nil
 	}
 
 	last := entities[len(entities)-1]
 
-	nextToken, _ := c.createToken(sortPrimary, sortDirPrimary, sortSecondary, sortDirSecondary, last, pageSize)
+	c.EnsureInitializedReflection(last)
+
+	nextToken, err := c.createToken(sortPrimary, sortDirPrimary, sortSecondary, sortDirSecondary, last, pageSize)
+	if err != nil {
+		return nil, ct.CursorToken{}, err
+	}
 
 	return entities, nextToken, nil
 }

wmo/queryUpdate.go

@@ -8,14 +8,9 @@ import (
 )
 
 func (c *Coll[TData]) FindOneAndUpdate(ctx context.Context, filterQuery bson.M, updateQuery bson.M) (TData, error) {
-	var res TData
+	mongoRes := c.coll.FindOneAndUpdate(ctx, filterQuery, updateQuery, options.FindOneAndUpdate().SetReturnDocument(options.After))
 
-	err := c.coll.FindOneAndUpdate(ctx, filterQuery, updateQuery, options.FindOneAndUpdate().SetReturnDocument(options.After)).Decode(&res)
+	return c.decodeSingle(ctx, mongoRes)
-	if err != nil {
-		return *new(TData), err
-	}
-
-	return res, nil
 }
 
 func (c *Coll[TData]) UpdateOne(ctx context.Context, filterQuery bson.M, updateQuery bson.M) error {
@@ -45,8 +40,8 @@ func (c *Coll[TData]) UpdateMany(ctx context.Context, filterQuery bson.M, update
 	return res, nil
 }
 
-func (c *Coll[TData]) ReplaceOne(ctx context.Context, id EntityID, value TData) error {
+func (c *Coll[TData]) ReplaceOne(ctx context.Context, filterQuery bson.M, value TData) error {
-	_, err := c.coll.UpdateOne(ctx, bson.M{"_id": id}, value)
+	_, err := c.coll.UpdateOne(ctx, filterQuery, bson.M{"$set": value})
 	if err != nil {
 		return err
 	}
@@ -54,13 +49,8 @@ func (c *Coll[TData]) ReplaceOne(ctx context.Context, id EntityID, value TData)
 	return nil
 }
 
-func (c *Coll[TData]) FindOneAndReplace(ctx context.Context, id EntityID, value TData) (TData, error) {
+func (c *Coll[TData]) FindOneAndReplace(ctx context.Context, filterQuery bson.M, value TData) (TData, error) {
-	var res TData
+	mongoRes := c.coll.FindOneAndUpdate(ctx, filterQuery, bson.M{"$set": value}, options.FindOneAndUpdate().SetReturnDocument(options.After))
 
-	err := c.coll.FindOneAndUpdate(ctx, bson.M{"_id": id}, value, options.FindOneAndUpdate().SetReturnDocument(options.After)).Decode(&res)
+	return c.decodeSingle(ctx, mongoRes)
-	if err != nil {
-		return *new(TData), err
-	}
-
-	return res, nil
 }

wmo/reflection.go

@@ -1,24 +1,62 @@
 package wmo
 
 import (
+	"errors"
 	"gogs.mikescher.com/BlackForestBytes/goext/langext"
 	"gogs.mikescher.com/BlackForestBytes/goext/reflectext"
 	"reflect"
+	"strings"
 )
 
+func (c *Coll[TData]) EnsureInitializedReflection(v TData) {
+
+	if !c.isInterfaceDataType {
+		return // only dynamically load dataTypeMap on interface TData
+	}
+
+	rval := reflect.ValueOf(v)
+	for rval.Type().Kind() == reflect.Pointer {
+		rval = rval.Elem()
+	}
+
+	if _, ok := c.implDataTypeMap[rval.Type()]; ok {
+		return // already loaded
+	}
+
+	m := make(map[string]fullTypeRef)
+
+	c.initFields("", rval, m, make([]int, 0))
+
+	c.implDataTypeMap[rval.Type()] = m
+}
+
 func (c *Coll[TData]) init() {
 
-	c.dataTypeMap = make(map[string]fullTypeRef[TData])
-
 	example := *new(TData)
 
-	v := reflect.ValueOf(example)
+	datatype := reflect.TypeOf(&example).Elem()
 
-	c.initFields("", v, make([]int, 0))
+	if datatype.Kind() == reflect.Interface {
+
+		c.isInterfaceDataType = true
+
+		c.dataTypeMap = make(map[string]fullTypeRef)
+		c.implDataTypeMap = make(map[reflect.Type]map[string]fullTypeRef)
+	} else {
+
+		c.isInterfaceDataType = false
+
+		c.dataTypeMap = make(map[string]fullTypeRef)
+		c.implDataTypeMap = make(map[reflect.Type]map[string]fullTypeRef)
+
+		v := reflect.ValueOf(example)
+		c.initFields("", v, c.dataTypeMap, make([]int, 0))
+
+	}
 
 }
 
-func (c *Coll[TData]) initFields(prefix string, rval reflect.Value, idxarr []int) {
+func (c *Coll[TData]) initFields(prefix string, rval reflect.Value, m map[string]fullTypeRef, idxarr []int) {
 
 	rtyp := rval.Type()
 
@@ -31,44 +69,65 @@ func (c *Coll[TData]) initFields(prefix string, rval reflect.Value, idxarr []int
 			continue
 		}
 
+		bsontags := make([]string, 0)
 		bsonkey, found := rsfield.Tag.Lookup("bson")
-		if !found || bsonkey == "-" {
+		if !found {
 			continue
 		}
+		if strings.Contains(bsonkey, ",") {
+			bsontags = strings.Split(bsonkey[strings.Index(bsonkey, ",")+1:], ",")
+			bsonkey = bsonkey[:strings.Index(bsonkey, ",")]
+		}
+		if bsonkey == "-" {
+			continue
+		}
+
+		if bsonkey == "" {
+			bsonkey = rsfield.Name
+		}
 
 		fullKey := prefix + bsonkey
 
 		newIdxArr := langext.ArrCopy(idxarr)
 		newIdxArr = append(newIdxArr, i)
 
-		if rvfield.Type().Kind() == reflect.Pointer {
+		if langext.InArray("inline", bsontags) && rvfield.Kind() == reflect.Struct {
 
-			c.dataTypeMap[fullKey] = fullTypeRef[TData]{
+			// pass-through field
-				IsPointer:      true,
+			c.initFields(prefix, rvfield, m, newIdxArr)
-				RealType:       rvfield.Type(),
-				Kind:           rvfield.Type().Elem().Kind(),
-				Type:           rvfield.Type().Elem(),
-				UnderlyingType: reflectext.Underlying(rvfield.Type().Elem()),
-				Name:           rsfield.Name,
-				Index:          newIdxArr,
-			}
 
 		} else {
 
-			c.dataTypeMap[fullKey] = fullTypeRef[TData]{
+			if rvfield.Type().Kind() == reflect.Pointer {
-				IsPointer:      false,
+
-				RealType:       rvfield.Type(),
+				m[fullKey] = fullTypeRef{
-				Kind:           rvfield.Type().Kind(),
+					IsPointer:      true,
-				Type:           rvfield.Type(),
+					RealType:       rvfield.Type(),
-				UnderlyingType: reflectext.Underlying(rvfield.Type()),
+					Kind:           rvfield.Type().Elem().Kind(),
-				Name:           rsfield.Name,
+					Type:           rvfield.Type().Elem(),
-				Index:          newIdxArr,
+					UnderlyingType: reflectext.Underlying(rvfield.Type().Elem()),
+					Name:           rsfield.Name,
+					Index:          newIdxArr,
+				}
+
+			} else {
+
+				m[fullKey] = fullTypeRef{
+					IsPointer:      false,
+					RealType:       rvfield.Type(),
+					Kind:           rvfield.Type().Kind(),
+					Type:           rvfield.Type(),
+					UnderlyingType: reflectext.Underlying(rvfield.Type()),
+					Name:           rsfield.Name,
+					Index:          newIdxArr,
+				}
+
 			}
 
-		}
+			if rvfield.Kind() == reflect.Struct {
+				c.initFields(fullKey+".", rvfield, m, newIdxArr)
+			}
 
-		if rvfield.Kind() == reflect.Struct {
-			c.initFields(fullKey+".", rvfield, newIdxArr)
 		}
 
 	}
@@ -77,7 +136,10 @@ func (c *Coll[TData]) initFields(prefix string, rval reflect.Value, idxarr []int
 
 func (c *Coll[TData]) getTokenValueAsMongoType(value string, fieldName string) (any, error) {
 
-	fref := c.dataTypeMap[fieldName]
+	fref, err := c.getFieldType(fieldName)
+	if err != nil {
+		return nil, err
+	}
 
 	pss := reflectext.PrimitiveStringSerializer{}
 
@@ -87,7 +149,10 @@ func (c *Coll[TData]) getTokenValueAsMongoType(value string, fieldName string) (
 
 func (c *Coll[TData]) getFieldValueAsTokenString(entity TData, fieldName string) (string, error) {
 
-	realValue := c.getFieldValue(entity, fieldName)
+	realValue, err := c.getFieldValue(entity, fieldName)
+	if err != nil {
+		return "", err
+	}
 
 	pss := reflectext.PrimitiveStringSerializer{}
 
@@ -95,12 +160,56 @@ func (c *Coll[TData]) getFieldValueAsTokenString(entity TData, fieldName string)
 
 }
 
-func (c *Coll[TData]) getFieldType(fieldName string) fullTypeRef[TData] {
+func (c *Coll[TData]) getFieldType(fieldName string) (fullTypeRef, error) {
-	return c.dataTypeMap[fieldName]
+	if c.isInterfaceDataType {
+
+		for _, m := range c.implDataTypeMap {
+			if r, ok := m[fieldName]; ok {
+				return r, nil
+			}
+		}
+
+		return fullTypeRef{}, errors.New("unknown field: '" + fieldName + "' (in any impl)")
+
+	} else {
+
+		if r, ok := c.dataTypeMap[fieldName]; ok {
+			return r, nil
+		} else {
+			return fullTypeRef{}, errors.New("unknown field: '" + fieldName + "'")
+		}
+
+	}
+
 }
 
-func (c *Coll[TData]) getFieldValue(data TData, fieldName string) any {
+func (c *Coll[TData]) getFieldValue(data TData, fieldName string) (any, error) {
-	fref := c.dataTypeMap[fieldName]
+	if c.isInterfaceDataType {
-	rval := reflect.ValueOf(data)
+
-	return rval.FieldByIndex(fref.Index).Interface()
+		rval := reflect.ValueOf(data)
+		for rval.Type().Kind() == reflect.Pointer {
+			rval = rval.Elem()
+		}
+
+		if m, ok := c.implDataTypeMap[rval.Type()]; ok {
+			if fref, ok := m[fieldName]; ok {
+				rval := reflect.ValueOf(data)
+				return rval.FieldByIndex(fref.Index).Interface(), nil
+			} else {
+				return nil, errors.New("unknown bson field '" + fieldName + "' in type '" + rval.Type().String() + "'")
+			}
+		} else {
+			return nil, errors.New("unknown TData type: '" + rval.Type().String() + "'")
+		}
+
+	} else {
+
+		if fref, ok := c.dataTypeMap[fieldName]; ok {
+			rval := reflect.ValueOf(data)
+			return rval.FieldByIndex(fref.Index).Interface(), nil
+		} else {
+			return nil, errors.New("unknown bson field '" + fieldName + "'")
+		}
+
+	}
 }

wmo/reflection_test.go

@@ -1,11 +1,14 @@
 package wmo
 
 import (
+	"context"
+	"go.mongodb.org/mongo-driver/bson/primitive"
 	"go.mongodb.org/mongo-driver/mongo"
 	"gogs.mikescher.com/BlackForestBytes/goext/langext"
 	"gogs.mikescher.com/BlackForestBytes/goext/rfctime"
 	"gogs.mikescher.com/BlackForestBytes/goext/timeext"
 	"gogs.mikescher.com/BlackForestBytes/goext/tst"
+	"reflect"
 	"testing"
 	"time"
 )
@@ -45,35 +48,51 @@ func TestReflectionGetFieldType(t *testing.T) {
 		MDate: t1,
 	}
 
-	tst.AssertEqual(t, coll.getFieldType("_id").Kind.String(), "string")
+	gft := func(k string) fullTypeRef {
-	tst.AssertEqual(t, coll.getFieldType("_id").Type.String(), "wmo.IDType")
+		v, err := coll.getFieldType(k)
-	tst.AssertEqual(t, coll.getFieldType("_id").Name, "ID")
+		if err != nil {
-	tst.AssertEqual(t, coll.getFieldType("_id").IsPointer, false)
+			t.Errorf("%s: %v", "failed to getFieldType", err)
-	tst.AssertEqual(t, coll.getFieldValue(d, "_id").(IDType), "1")
+		}
+		return v
+	}
 
-	tst.AssertEqual(t, coll.getFieldType("cdate").Kind.String(), "struct")
+	gfv := func(k string) any {
-	tst.AssertEqual(t, coll.getFieldType("cdate").Type.String(), "time.Time")
+		v, err := coll.getFieldValue(d, k)
-	tst.AssertEqual(t, coll.getFieldType("cdate").Name, "CDate")
+		if err != nil {
-	tst.AssertEqual(t, coll.getFieldType("cdate").IsPointer, false)
+			t.Errorf("%s: %v", "failed to getFieldType", err)
-	tst.AssertEqual(t, coll.getFieldValue(d, "cdate").(time.Time), t0)
+		}
+		return v
+	}
 
-	tst.AssertEqual(t, coll.getFieldType("sub.a").Kind.String(), "string")
+	tst.AssertEqual(t, gft("_id").Kind.String(), "string")
-	tst.AssertEqual(t, coll.getFieldType("sub.a").Type.String(), "string")
+	tst.AssertEqual(t, gft("_id").Type.String(), "wmo.IDType")
-	tst.AssertEqual(t, coll.getFieldType("sub.a").Name, "A")
+	tst.AssertEqual(t, gft("_id").Name, "ID")
-	tst.AssertEqual(t, coll.getFieldType("sub.a").IsPointer, false)
+	tst.AssertEqual(t, gft("_id").IsPointer, false)
-	tst.AssertEqual(t, coll.getFieldValue(d, "sub.a").(string), "2")
+	tst.AssertEqual(t, gfv("_id").(IDType), "1")
 
-	tst.AssertEqual(t, coll.getFieldType("str").Kind.String(), "string")
+	tst.AssertEqual(t, gft("cdate").Kind.String(), "struct")
-	tst.AssertEqual(t, coll.getFieldType("str").Type.String(), "string")
+	tst.AssertEqual(t, gft("cdate").Type.String(), "time.Time")
-	tst.AssertEqual(t, coll.getFieldType("str").Name, "Str")
+	tst.AssertEqual(t, gft("cdate").Name, "CDate")
-	tst.AssertEqual(t, coll.getFieldType("str").IsPointer, false)
+	tst.AssertEqual(t, gft("cdate").IsPointer, false)
-	tst.AssertEqual(t, coll.getFieldValue(d, "str").(string), "3")
+	tst.AssertEqual(t, gfv("cdate").(time.Time), t0)
 
-	tst.AssertEqual(t, coll.getFieldType("ptr").Kind.String(), "int")
+	tst.AssertEqual(t, gft("sub.a").Kind.String(), "string")
-	tst.AssertEqual(t, coll.getFieldType("ptr").Type.String(), "int")
+	tst.AssertEqual(t, gft("sub.a").Type.String(), "string")
-	tst.AssertEqual(t, coll.getFieldType("ptr").Name, "Ptr")
+	tst.AssertEqual(t, gft("sub.a").Name, "A")
-	tst.AssertEqual(t, coll.getFieldType("ptr").IsPointer, true)
+	tst.AssertEqual(t, gft("sub.a").IsPointer, false)
-	tst.AssertEqual(t, *coll.getFieldValue(d, "ptr").(*int), 4)
+	tst.AssertEqual(t, gfv("sub.a").(string), "2")
+
+	tst.AssertEqual(t, gft("str").Kind.String(), "string")
+	tst.AssertEqual(t, gft("str").Type.String(), "string")
+	tst.AssertEqual(t, gft("str").Name, "Str")
+	tst.AssertEqual(t, gft("str").IsPointer, false)
+	tst.AssertEqual(t, gfv("str").(string), "3")
+
+	tst.AssertEqual(t, gft("ptr").Kind.String(), "int")
+	tst.AssertEqual(t, gft("ptr").Type.String(), "int")
+	tst.AssertEqual(t, gft("ptr").Name, "Ptr")
+	tst.AssertEqual(t, gft("ptr").IsPointer, true)
+	tst.AssertEqual(t, *gfv("ptr").(*int), 4)
 }
 
 func TestReflectionGetTokenValueAsMongoType(t *testing.T) {
@@ -177,3 +196,31 @@ func TestReflectionGetFieldValueAsTokenString(t *testing.T) {
 	tst.AssertEqual(t, gfvats(d, "cdate"), t0.Format(time.RFC3339Nano))
 	tst.AssertEqual(t, gfvats(d, "mdate"), t0.Format(time.RFC3339Nano))
 }
+
+func TestReflectionWithInterface(t *testing.T) {
+
+	type TestData struct {
+		ID    primitive.ObjectID `bson:"_id"`
+		CDate time.Time          `bson:"cdate"`
+	}
+
+	type TestInterface interface {
+	}
+
+	coll1 := W[TestInterface](&mongo.Collection{})
+
+	tst.AssertTrue(t, coll1.coll != nil)
+	tst.AssertEqual(t, 0, len(coll1.implDataTypeMap))
+
+	df := func(ctx context.Context, dec Decodable) (TestInterface, error) {
+		return TestData{}, nil
+	}
+
+	coll2 := W[TestInterface](&mongo.Collection{}).WithDecodeFunc(df, TestData{})
+
+	tst.AssertTrue(t, coll2.coll != nil)
+	tst.AssertEqual(t, 1, len(coll2.implDataTypeMap))
+
+	tst.AssertEqual(t, "ID", coll2.implDataTypeMap[reflect.TypeOf(TestData{})]["_id"].Name)
+	tst.AssertEqual(t, "CDate", coll2.implDataTypeMap[reflect.TypeOf(TestData{})]["cdate"].Name)
+}