Merge pull request 'develop' (#30) from develop into main

Reviewed-on: goffee/core#30

core.go

@@ -293,7 +293,6 @@ func (app *App) makeHTTPRouterHandlerFunc(h Controller, ms []Hook) httprouter.Ha
 		for _, header := range ctx.Response.headers {
 			w.Header().Add(header.key, header.val)
 		}
-		logger.CloseLogsFile()
 		var ct string
 		if ctx.Response.overrideContentType != "" {
 			ct = ctx.Response.overrideContentType
@@ -334,7 +333,7 @@ func (n notFoundHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	w.WriteHeader(http.StatusNotFound)
 	res := "{\"message\": \"Not Found\"}"
 	loggr.Error("Not Found")
-	loggr.Error(debug.Stack())
+	//loggr.Error(debug.Stack())
 	w.Header().Add(CONTENT_TYPE, CONTENT_TYPE_JSON)
 	w.Write([]byte(res))
 }
@@ -344,7 +343,7 @@ func (n methodNotAllowed) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	w.WriteHeader(http.StatusMethodNotAllowed)
 	res := "{\"message\": \"Method not allowed\"}"
 	loggr.Error("Method not allowed")
-	loggr.Error(debug.Stack())
+	//loggr.Error(debug.Stack())
 	w.Header().Add(CONTENT_TYPE, CONTENT_TYPE_JSON)
 	w.Write([]byte(res))
 }
@@ -372,7 +371,7 @@ var panicHandler = func(w http.ResponseWriter, r *http.Request, e interface{}) {
 	shrtMsg := fmt.Sprintf("%v", e)
 	loggr.Error(shrtMsg)
 	fmt.Println(shrtMsg)
-	loggr.Error(string(debug.Stack()))
+	//loggr.Error(string(debug.Stack()))
 	var res string
 	if env.GetVarOtherwiseDefault("APP_ENV", "local") == PRODUCTION {
 		res = "{\"message\": \"internal error\"}"

go.mod

@@ -4,57 +4,61 @@ replace git.smarteching.com/goffee/core/logger => ./logger
 
 replace git.smarteching.com/goffee/core/env => ./env
 
-go 1.24.1
+go 1.25.0
 
 require (
 	git.smarteching.com/zeni/go-chart/v2 v2.1.4
+	git.smarteching.com/zeni/go-charts/v2 v2.6.11
 	github.com/brianvoe/gofakeit/v6 v6.21.0
-	github.com/golang-jwt/jwt/v5 v5.0.0
+	github.com/golang-jwt/jwt/v5 v5.3.1
 	github.com/google/uuid v1.6.0
 	github.com/harranali/mailing v1.2.0
+	github.com/hibiken/asynq v0.26.0
 	github.com/joho/godotenv v1.5.1
 	github.com/julienschmidt/httprouter v1.3.0
-	github.com/redis/go-redis/v9 v9.7.0
+	github.com/redis/go-redis/v9 v9.19.0
-	golang.org/x/crypto v0.11.0
+	golang.org/x/crypto v0.50.0
-	gorm.io/driver/mysql v1.5.1
+	gorm.io/driver/mysql v1.6.0
-	gorm.io/driver/postgres v1.5.2
+	gorm.io/driver/postgres v1.6.0
-	gorm.io/driver/sqlite v1.5.2
+	gorm.io/driver/sqlite v1.6.0
-	gorm.io/gorm v1.25.2
+	gorm.io/gorm v1.31.1
 )
 
 require (
-	git.smarteching.com/zeni/go-charts/v2 v2.6.11 // indirect
+	filippo.io/edwards25519 v1.2.0 // indirect
 	github.com/SparkPost/gosparkpost v0.2.0 // indirect
 	github.com/asaskevich/govalidator v0.0.0-20230301143203-a9d515a09cc2 // indirect
 	github.com/dustin/go-humanize v1.0.1 // indirect
-	github.com/go-chi/chi/v5 v5.0.8 // indirect
+	github.com/go-chi/chi/v5 v5.2.5 // indirect
-	github.com/go-sql-driver/mysql v1.7.0 // indirect
+	github.com/go-sql-driver/mysql v1.10.0 // indirect
 	github.com/golang/freetype v0.0.0-20170609003504-e2365dfdc4a0 // indirect
-	github.com/hibiken/asynq v0.25.1 // indirect
 	github.com/jackc/pgpassfile v1.0.0 // indirect
-	github.com/jackc/pgservicefile v0.0.0-20221227161230-091c0ba34f0a // indirect
+	github.com/jackc/pgservicefile v0.0.0-20240606120523-5a60cdf6a761 // indirect
-	github.com/jackc/pgx/v5 v5.3.1 // indirect
+	github.com/jackc/pgx/v5 v5.9.2 // indirect
-	github.com/json-iterator/go v1.1.10 // indirect
+	github.com/jackc/puddle/v2 v2.2.2 // indirect
-	github.com/mailgun/mailgun-go/v4 v4.10.0 // indirect
+	github.com/json-iterator/go v1.1.12 // indirect
-	github.com/mattn/go-sqlite3 v1.14.17 // indirect
+	github.com/mailgun/errors v0.5.0 // indirect
-	github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421 // indirect
+	github.com/mailgun/mailgun-go/v4 v4.23.0 // indirect
-	github.com/modern-go/reflect2 v0.0.0-20180701023420-4b7aa43c6742 // indirect
+	github.com/mattn/go-sqlite3 v1.14.44 // indirect
+	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
+	github.com/modern-go/reflect2 v1.0.2 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
 	github.com/robfig/cron/v3 v3.0.1 // indirect
 	github.com/sendgrid/rest v2.6.9+incompatible // indirect
-	github.com/sendgrid/sendgrid-go v3.12.0+incompatible // indirect
+	github.com/sendgrid/sendgrid-go v3.16.1+incompatible // indirect
-	github.com/spf13/cast v1.7.0 // indirect
+	github.com/spf13/cast v1.10.0 // indirect
-	golang.org/x/image v0.21.0 // indirect
+	go.uber.org/atomic v1.11.0 // indirect
-	golang.org/x/net v0.10.0 // indirect
+	golang.org/x/image v0.39.0 // indirect
-	golang.org/x/sys v0.27.0 // indirect
+	golang.org/x/net v0.53.0 // indirect
-	golang.org/x/text v0.19.0 // indirect
+	golang.org/x/sync v0.20.0 // indirect
-	golang.org/x/time v0.8.0 // indirect
+	golang.org/x/sys v0.43.0 // indirect
-	google.golang.org/protobuf v1.35.2 // indirect
+	golang.org/x/text v0.36.0 // indirect
+	golang.org/x/time v0.15.0 // indirect
+	google.golang.org/protobuf v1.36.11 // indirect
 )
 
 require (
-	github.com/cespare/xxhash/v2 v2.2.0 // indirect
+	github.com/cespare/xxhash/v2 v2.3.0 // indirect
-	github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f // indirect
 	github.com/go-ozzo/ozzo-validation v3.6.0+incompatible
 	github.com/jinzhu/inflection v1.0.0 // indirect
 	github.com/jinzhu/now v1.1.5 // indirect

go.sum

@@ -1,3 +1,5 @@
+filippo.io/edwards25519 v1.2.0 h1:crnVqOiS4jqYleHd9vaKZ+HKtHfllngJIiOpNpoJsjo=
+filippo.io/edwards25519 v1.2.0/go.mod h1:xzAOLCNug/yB62zG1bQ8uziwrIqIuxhctzJT18Q77mc=
 git.smarteching.com/zeni/go-chart/v2 v2.1.4 h1:pF06+F6eqJLIG8uMiTVPR5TygPGMjM/FHMzTxmu5V/Q=
 git.smarteching.com/zeni/go-chart/v2 v2.1.4/go.mod h1:b3ueW9h3pGGXyhkormZAvilHaG4+mQti+bMNPdQBeOQ=
 git.smarteching.com/zeni/go-charts/v2 v2.6.11 h1:9udzlv3uxGXszpplfkL5IaTUrgkNj++KwhbaN1vVEqI=
@@ -8,54 +10,50 @@ github.com/asaskevich/govalidator v0.0.0-20230301143203-a9d515a09cc2 h1:DklsrG3d
 github.com/asaskevich/govalidator v0.0.0-20230301143203-a9d515a09cc2/go.mod h1:WaHUgvxTVq04UNunO+XhnAqY/wQc+bxr74GqbsZ/Jqw=
 github.com/brianvoe/gofakeit/v6 v6.21.0 h1:tNkm9yxEbpuPK8Bx39tT4sSc5i9SUGiciLdNix+VDQY=
 github.com/brianvoe/gofakeit/v6 v6.21.0/go.mod h1:Ow6qC71xtwm79anlwKRlWZW6zVq9D2XHE4QSSMP/rU8=
-github.com/bsm/ginkgo/v2 v2.7.0 h1:ItPMPH90RbmZJt5GtkcNvIRuGEdwlBItdNVoyzaNQao=
+github.com/bsm/ginkgo/v2 v2.12.0 h1:Ny8MWAHyOepLGlLKYmXG4IEkioBysk6GpaRTLC8zwWs=
-github.com/bsm/ginkgo/v2 v2.7.0/go.mod h1:AiKlXPm7ItEHNc/2+OkrNG4E0ITzojb9/xWzvQ9XZ9w=
+github.com/bsm/ginkgo/v2 v2.12.0/go.mod h1:SwYbGRRDovPVboqFv0tPTcG1sN61LM1Z4ARdbAV9g4c=
-github.com/bsm/gomega v1.26.0 h1:LhQm+AFcgV2M0WyKroMASzAzCAJVpAxQXv4SaI9a69Y=
+github.com/bsm/gomega v1.27.10 h1:yeMWxP2pV2fG3FgAODIY8EiRE3dy0aeFYt4l7wh6yKA=
-github.com/bsm/gomega v1.26.0/go.mod h1:JyEr/xRbxbtgWNi8tIEVPUYZ5Dzef52k01W3YH0H+O0=
+github.com/bsm/gomega v1.27.10/go.mod h1:JyEr/xRbxbtgWNi8tIEVPUYZ5Dzef52k01W3YH0H+O0=
 github.com/buger/jsonparser v1.0.0/go.mod h1:tgcrVJ81GPSF0mz+0nu1Xaz0fazGPrmmJfJtxjbHhUQ=
 github.com/cention-sany/utf7 v0.0.0-20170124080048-26cad61bd60a/go.mod h1:2GxOXOlEPAMFPfp014mK1SWq8G8BN8o7/dfYqJrVGn8=
-github.com/cespare/xxhash/v2 v2.2.0 h1:DC2CZ1Ep5Y4k3ZQ899DldepgrayRUGE6BBZ/cd9Cj44=
+github.com/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UFvs=
-github.com/cespare/xxhash/v2 v2.2.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
+github.com/cespare/xxhash/v2 v2.3.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
 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/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f h1:lO4WD4F/rVNCu3HqELle0jiPLLBs70cWOduZpkS1E78=
-github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f/go.mod h1:cuUVRXasLTGF7a8hSLbxyZXjz+1KgoB3wDUb6vlszIc=
 github.com/dustin/go-humanize v1.0.1 h1:GzkhY7T5VNhEkwH0PVJgjz+fX1rhBrR7pRT3mDkpeCY=
 github.com/dustin/go-humanize v1.0.1/go.mod h1:Mu1zIs6XwVuF/gI1OepvI0qD18qycQx+mFykh5fBlto=
-github.com/facebookgo/ensure v0.0.0-20160127193407-b4ab57deab51 h1:0JZ+dUmQeA8IIVUMzysrX4/AKuQwWhV2dYQuPZdvdSQ=
+github.com/frankban/quicktest v1.14.6 h1:7Xjx+VpznH+oBnejlPUj8oUpdxnVs4f8XU8WnHkI4W8=
-github.com/facebookgo/ensure v0.0.0-20160127193407-b4ab57deab51/go.mod h1:Yg+htXGokKKdzcwhuNDwVvN+uBxDGXJ7G/VN1d8fa64=
+github.com/frankban/quicktest v1.14.6/go.mod h1:4ptaffx2x8+WTWXmUCuVU6aPUX1/Mz7zb5vbUoiM6w0=
-github.com/facebookgo/stack v0.0.0-20160209184415-751773369052 h1:JWuenKqqX8nojtoVVWjGfOF9635RETekkoH6Cc9SX0A=
+github.com/go-chi/chi/v5 v5.2.5 h1:Eg4myHZBjyvJmAFjFvWgrqDTXFyOzjj7YIm3L3mu6Ug=
-github.com/facebookgo/stack v0.0.0-20160209184415-751773369052/go.mod h1:UbMTZqLaRiH3MsBH8va0n7s1pQYcu3uTb8G4tygF4Zg=
+github.com/go-chi/chi/v5 v5.2.5/go.mod h1:X7Gx4mteadT3eDOMTsXzmI4/rwUpOwBHLpAfupzFJP0=
-github.com/facebookgo/subset v0.0.0-20150612182917-8dac2c3c4870 h1:E2s37DuLxFhQDg5gKsWoLBOB0n+ZW8s599zru8FJ2/Y=
-github.com/facebookgo/subset v0.0.0-20150612182917-8dac2c3c4870/go.mod h1:5tD+neXqOorC30/tWg0LCSkrqj/AR6gu8yY8/fpw1q0=
-github.com/go-chi/chi/v5 v5.0.8 h1:lD+NLqFcAi1ovnVZpsnObHGW4xb4J8lNmoYVfECH1Y0=
-github.com/go-chi/chi/v5 v5.0.8/go.mod h1:DslCQbL2OYiznFReuXYUmQ2hGd1aDpCnlMNITLSKoi8=
 github.com/go-ozzo/ozzo-validation v3.6.0+incompatible h1:msy24VGS42fKO9K1vLz82/GeYW1cILu7Nuuj1N3BBkE=
 github.com/go-ozzo/ozzo-validation v3.6.0+incompatible/go.mod h1:gsEKFIVnabGBt6mXmxK0MoFy+cZoTJY6mu5Ll3LVLBU=
-github.com/go-sql-driver/mysql v1.7.0 h1:ueSltNNllEqE3qcWBTD0iQd3IpL/6U+mJxLkazJ7YPc=
+github.com/go-sql-driver/mysql v1.10.0 h1:Q+1LV8DkHJvSYAdR83XzuhDaTykuDx0l6fkXxoWCWfw=
-github.com/go-sql-driver/mysql v1.7.0/go.mod h1:OXbVy3sEdcQ2Doequ6Z5BW6fXNQTmx+9S1MCJN5yJMI=
+github.com/go-sql-driver/mysql v1.10.0/go.mod h1:M+cqaI7+xxXGG9swrdeUIoPG3Y3KCkF0pZej+SK+nWk=
 github.com/go-test/deep v1.0.2/go.mod h1:wGDj63lr65AM2AQyKZd/NYHGb0R+1RLqB8NKt3aSFNA=
 github.com/gogs/chardet v0.0.0-20150115103509-2404f7772561/go.mod h1:Pcatq5tYkCW2Q6yrR2VRHlbHpZ/R4/7qyL1TCF7vl14=
-github.com/golang-jwt/jwt/v5 v5.0.0 h1:1n1XNM9hk7O9mnQoNBGolZvzebBQ7p93ULHRc28XJUE=
+github.com/golang-jwt/jwt/v5 v5.3.1 h1:kYf81DTWFe7t+1VvL7eS+jKFVWaUnK9cB1qbwn63YCY=
-github.com/golang-jwt/jwt/v5 v5.0.0/go.mod h1:pqrtFR0X4osieyHYxtmOUWsAWrfe1Q5UVIyoH402zdk=
+github.com/golang-jwt/jwt/v5 v5.3.1/go.mod h1:fxCRLWMO43lRc8nhHWY6LGqRcf+1gQWArsqaEUEa5bE=
 github.com/golang/freetype v0.0.0-20170609003504-e2365dfdc4a0 h1:DACJavvAHhabrF08vX0COfcOBJRhZ8lUbR+ZWIs0Y5g=
 github.com/golang/freetype v0.0.0-20170609003504-e2365dfdc4a0/go.mod h1:E/TSTwGwJL78qG/PmXZO1EjYhfJinVAhrmmHX6Z8B9k=
+github.com/google/go-cmp v0.7.0 h1:wk8382ETsv4JYUZwIsn6YpYiWiBsYLSJiTsyBybVuN8=
+github.com/google/go-cmp v0.7.0/go.mod h1:pXiqmnSA92OHEEa9HXL2W4E7lf9JzCmGVUdgjX3N/iU=
 github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
-github.com/google/uuid v1.3.0 h1:t6JiXgmwXMjEs8VusXIJk2BXHsn+wx8BZdTaoZ5fu7I=
-github.com/google/uuid v1.3.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
 github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/harranali/mailing v1.2.0 h1:ihIyJwB8hyRVcdk+v465wk1PHMrSrgJqo/kMd+gZClY=
 github.com/harranali/mailing v1.2.0/go.mod h1:4a5N3yG98pZKluMpmcYlTtll7bisvOfGQEMIng3VQk4=
-github.com/hibiken/asynq v0.25.1 h1:phj028N0nm15n8O2ims+IvJ2gz4k2auvermngh9JhTw=
+github.com/hibiken/asynq v0.26.0 h1:1Zxr92MlDnb1Zt/QR5g2vSCqUS03i95lUfqx5X7/wrw=
-github.com/hibiken/asynq v0.25.1/go.mod h1:pazWNOLBu0FEynQRBvHA26qdIKRSmfdIfUm4HdsLmXg=
+github.com/hibiken/asynq v0.26.0/go.mod h1:Qk4e57bTnWDoyJ67VkchuV6VzSM9IQW2nPvAGuDyw58=
 github.com/jackc/pgpassfile v1.0.0 h1:/6Hmqy13Ss2zCq62VdNG8tM1wchn8zjSGOBJ6icpsIM=
 github.com/jackc/pgpassfile v1.0.0/go.mod h1:CEx0iS5ambNFdcRtxPj5JhEz+xB6uRky5eyVu/W2HEg=
-github.com/jackc/pgservicefile v0.0.0-20221227161230-091c0ba34f0a h1:bbPeKD0xmW/Y25WS6cokEszi5g+S0QxI/d45PkRi7Nk=
+github.com/jackc/pgservicefile v0.0.0-20240606120523-5a60cdf6a761 h1:iCEnooe7UlwOQYpKFhBabPMi4aNAfoODPEFNiAnClxo=
-github.com/jackc/pgservicefile v0.0.0-20221227161230-091c0ba34f0a/go.mod h1:5TJZWKEWniPve33vlWYSoGYefn3gLQRzjfDlhSJ9ZKM=
+github.com/jackc/pgservicefile v0.0.0-20240606120523-5a60cdf6a761/go.mod h1:5TJZWKEWniPve33vlWYSoGYefn3gLQRzjfDlhSJ9ZKM=
-github.com/jackc/pgx/v5 v5.3.1 h1:Fcr8QJ1ZeLi5zsPZqQeUZhNhxfkkKBOgJuYkJHoBOtU=
+github.com/jackc/pgx/v5 v5.9.2 h1:3ZhOzMWnR4yJ+RW1XImIPsD1aNSz4T4fyP7zlQb56hw=
-github.com/jackc/pgx/v5 v5.3.1/go.mod h1:t3JDKnCBlYIc0ewLF0Q7B8MXmoIaBOZj/ic7iHozM/8=
+github.com/jackc/pgx/v5 v5.9.2/go.mod h1:mal1tBGAFfLHvZzaYh77YS/eC6IX9OWbRV1QIIM0Jn4=
+github.com/jackc/puddle/v2 v2.2.2 h1:PR8nw+E/1w0GLuRFSmiioY6UooMp6KJv0/61nB7icHo=
+github.com/jackc/puddle/v2 v2.2.2/go.mod h1:vriiEXHvEE654aYKXXjOvZM39qJ0q+azkZFrfEOc3H4=
 github.com/jaytaylor/html2text v0.0.0-20190408195923-01ec452cbe43/go.mod h1:CVKlgaMiht+LXvHG173ujK6JUhZXKb2u/BQtjPDIvyk=
 github.com/jhillyerd/enmime v0.8.0/go.mod h1:MBHs3ugk03NGjMM6PuRynlKf+HA5eSillZ+TRCm73AE=
 github.com/jinzhu/inflection v1.0.0 h1:K317FqzuhWc8YvSVlFMCCUb36O/S9MCKRDI7QkRKD/E=
@@ -64,77 +62,94 @@ github.com/jinzhu/now v1.1.5 h1:/o9tlHleP7gOFmsnYNz3RGnqzefHA47wQpKrrdTIwXQ=
 github.com/jinzhu/now v1.1.5/go.mod h1:d3SSVoowX0Lcu0IBviAWJpolVfI5UJVZZ7cO71lE/z8=
 github.com/joho/godotenv v1.5.1 h1:7eLL/+HRGLY0ldzfGMeQkb7vMd0as4CfYvUVzLqw0N0=
 github.com/joho/godotenv v1.5.1/go.mod h1:f4LDr5Voq0i2e/R5DDNOoa2zzDfwtkZa6DnEwAbqwq4=
-github.com/json-iterator/go v1.1.10 h1:Kz6Cvnvv2wGdaG/V8yMvfkmNiXq9Ya2KUv4rouJJr68=
+github.com/json-iterator/go v1.1.12 h1:PV8peI4a0ysnczrg+LtxykD8LfKY9ML6u2jnxaEnrnM=
-github.com/json-iterator/go v1.1.10/go.mod h1:KdQUCv79m/52Kvf8AW2vK1V8akMuk1QjK/uOdHXbAo4=
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graph.go

@@ -11,6 +11,7 @@ import (
 	"strings"
 
 	"git.smarteching.com/zeni/go-chart/v2"
+	"git.smarteching.com/zeni/go-charts/v2"
 	"github.com/julienschmidt/httprouter"
 )
 
@@ -44,7 +45,7 @@ func Graph(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
 					qtyl := len(labels)
 					qtyv := len(values)
 
-					// cjeck qty and equal values from url
+					// check qty and equal values from url
 					if qtyl < 2 {
 						fmt.Fprintf(w, "Missing captions in pie")
 						return
@@ -85,9 +86,9 @@ func Graph(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
 					qtyl := len(labels)
 					qtyv := len(values)
 
-					// cjeck qty and equal values from url
+					// check qty and equal values from url
 					if qtyl < 2 {
-						fmt.Fprintf(w, "Missing captions in pie")
+						fmt.Fprintf(w, "Missing captions in bar")
 						return
 					}
 					if qtyv != qtyl {
@@ -116,6 +117,83 @@ func Graph(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
 						fmt.Printf("Error rendering pie chart: %v\n", err)
 					}
 
+				// case multiple graph bar
+				case "mbar":
+
+					queryValues := r.URL.Query()
+					labels := strings.Split(queryValues.Get("l"), "|")
+					values := strings.Split(queryValues.Get("v"), "|")
+					options := strings.Split(queryValues.Get("o"), "|")
+
+					qtyl := len(labels)
+					qtyv := len(values)
+					qtyo := len(options)
+
+					// check qty and equal values from url
+					if qtyl < 2 {
+						fmt.Fprintf(w, "Missing captions in bar")
+						return
+					}
+					if qtyv < 2 {
+						fmt.Fprintf(w, "Missing values in bar")
+						return
+					}
+					if qtyo < 2 {
+						fmt.Fprintf(w, "Missing options in bar")
+						return
+					}
+
+					valuest := [][]float64{
+						{
+							2.0,
+							4.9,
+							7.0,
+							23.2,
+							25.6,
+							76.7,
+							135.6,
+							162.2,
+							32.6,
+						},
+						{
+							2.6,
+							5.9,
+							9.0,
+							26.4,
+							28.7,
+							70.7,
+							175.6,
+							182.2,
+							48.7,
+						},
+					}
+					p, err := charts.BarRender(
+						valuest,
+						charts.XAxisDataOptionFunc([]string{
+							"Apr",
+							"May",
+							"Jun",
+							"Jul",
+							"Aug",
+							"Sep",
+							"Oct",
+							"Nov",
+							"Dec",
+						}),
+						charts.LegendLabelsOptionFunc(labels, charts.PositionRight),
+					)
+					if err != nil {
+						panic(err)
+					}
+
+					buf, err := p.Bytes()
+
+					w.Header().Set("Content-Type", "image/png")
+					w.Write(buf)
+					if err != nil {
+						fmt.Printf("Error rendering pie chart: %v\n", err)
+					}
+
 				default:
 					fmt.Fprintf(w, "Unknown graph %s!\n", kindg)
 				}

logger/logger.go

@@ -1,4 +1,4 @@
-// Copyright 2021 Harran Ali <harran.m@gmail.com>. All rights reserved.
+// Copyright (c) 2026 Zeni Kim <zenik@smarteching.com>
 // Use of this source code is governed by MIT-style
 // license that can be found in the LICENSE file.
 
@@ -8,16 +8,68 @@ import (
 	"io"
 	"log"
 	"os"
+	"strings"
 )
 
 // logs file
 var logsFile *os.File
 
+// ANSI color codes for terminal output
+const (
+	colorReset  = "\033[0m"
+	colorRed    = "\033[31m"
+	colorYellow = "\033[33m"
+	colorBlue   = "\033[34m"
+	colorCyan   = "\033[36m"
+)
+
+// Level represents a log severity level.
+type Level int
+
+const (
+	DEBUG Level = iota
+	INFO
+	WARNING
+	ERROR
+)
+
+// String returns the string representation of a log level.
+func (l Level) String() string {
+	switch l {
+	case DEBUG:
+		return "debug"
+	case INFO:
+		return "info"
+	case WARNING:
+		return "warning"
+	case ERROR:
+		return "error"
+	default:
+		return "unknown"
+	}
+}
+
+// coloredWriter wraps an io.Writer and replaces plain log prefixes with ANSI-colored ones
+// in the output stream. The original bytes pass through unmodified to any additional writers.
+type coloredWriter struct {
+	writer  io.Writer
+	plain   string
+	colored string
+}
+
+func (w *coloredWriter) Write(p []byte) (n int, err error) {
+	// Replace the plain prefix with the colored version in the output
+	colored := strings.Replace(string(p), w.plain, w.colored, 1)
+	return w.writer.Write([]byte(colored))
+}
+
 type Logger struct {
+	minLevel      Level
 	infoLogger    *log.Logger
 	warningLogger *log.Logger
 	errorLogger   *log.Logger
 	debugLogger   *log.Logger
+	file          *os.File
 }
 
 var l *Logger
@@ -40,9 +92,36 @@ func (f LogFileDriver) GetTarget() interface{} {
 	return f.FilePath
 }
 
+// levelPrefixes returns the plain and colored (with ANSI escapes) prefix strings for a given level.
+func levelPrefixes(level Level) (plain, colored string) {
+	switch level {
+	case INFO:
+		return "info: ", colorBlue + "INFO" + colorReset + ": "
+	case DEBUG:
+		return "debug: ", colorCyan + "DEBUG" + colorReset + ": "
+	case WARNING:
+		return "warning: ", colorYellow + "WARNING" + colorReset + ": "
+	case ERROR:
+		return "error: ", colorRed + "ERROR" + colorReset + ": "
+	default:
+		return "info: ", "INFO: "
+	}
+}
+
+// NewLogger creates a new Logger with the given driver and a minimum level of DEBUG (all levels logged).
 func NewLogger(driver LogsDriver) *Logger {
+	stdoutEnabled := os.Getenv("LOG_STDOUT_ENABLE") == "true"
+	return NewLoggerWithStdout(driver, DEBUG, stdoutEnabled)
+}
+
+// NewLoggerWithStdout creates a new Logger with the given driver, minimum log level,
+// and optionally writes to stdout in addition to the target file.
+// When stdoutEnabled is true, log messages are written to both the target and stdout.
+// ANSI color codes are applied to log prefixes in terminal output only.
+func NewLoggerWithStdout(driver LogsDriver, minLevel Level, stdoutEnabled bool) *Logger {
 	if driver.GetTarget() == nil {
 		l = &Logger{
+			minLevel:      minLevel,
 			infoLogger:    log.New(io.Discard, "info: ", log.LstdFlags),
 			warningLogger: log.New(io.Discard, "warning: ", log.LstdFlags),
 			errorLogger:   log.New(io.Discard, "error: ", log.LstdFlags),
@@ -54,41 +133,103 @@ func NewLogger(driver LogsDriver) *Logger {
 	if !ok {
 		panic("something wrong with the file path")
 	}
-	logsFile, err := os.OpenFile(path, os.O_CREATE|os.O_APPEND|os.O_RDWR, 0644)
+	var err error
+	logsFile, err = os.OpenFile(path, os.O_CREATE|os.O_APPEND|os.O_RDWR, 0644)
 	if err != nil {
 		panic(err)
 	}
+
+	if stdoutEnabled {
+		// Build each logger with a MultiWriter: the file gets the original plain output,
+		// stdout gets the output with ANSI-colored prefixes.
+		infoPlain, infoColored := levelPrefixes(INFO)
+		debugPlain, debugColored := levelPrefixes(DEBUG)
+		warnPlain, warnColored := levelPrefixes(WARNING)
+		errPlain, errColored := levelPrefixes(ERROR)
+
 		l = &Logger{
+			minLevel: minLevel,
+			infoLogger: log.New(
+				io.MultiWriter(logsFile, &coloredWriter{writer: os.Stdout, plain: infoPlain, colored: infoColored}),
+				infoPlain, log.LstdFlags,
+			),
+			warningLogger: log.New(
+				io.MultiWriter(logsFile, &coloredWriter{writer: os.Stdout, plain: warnPlain, colored: warnColored}),
+				warnPlain, log.LstdFlags,
+			),
+			errorLogger: log.New(
+				io.MultiWriter(logsFile, &coloredWriter{writer: os.Stdout, plain: errPlain, colored: errColored}),
+				errPlain, log.LstdFlags,
+			),
+			debugLogger: log.New(
+				io.MultiWriter(logsFile, &coloredWriter{writer: os.Stdout, plain: debugPlain, colored: debugColored}),
+				debugPlain, log.LstdFlags,
+			),
+			file: logsFile,
+		}
+	} else {
+		// No stdout: all output goes to file with plain prefixes
+		l = &Logger{
+			minLevel:      minLevel,
 			infoLogger:    log.New(logsFile, "info: ", log.LstdFlags),
 			warningLogger: log.New(logsFile, "warning: ", log.LstdFlags),
 			errorLogger:   log.New(logsFile, "error: ", log.LstdFlags),
 			debugLogger:   log.New(logsFile, "debug: ", log.LstdFlags),
+			file:          logsFile,
+		}
 	}
 	return l
 }
 
+// NewLoggerWithLevel creates a new Logger with the given driver and minimum log level.
+// Messages below the minimum level will be discarded. Stdout output is disabled by default.
+func NewLoggerWithLevel(driver LogsDriver, minLevel Level) *Logger {
+	stdoutEnabled := os.Getenv("LOG_STDOUT_ENABLE") == "true"
+	return NewLoggerWithStdout(driver, minLevel, stdoutEnabled)
+}
+
+// SetLevel sets the minimum log level for the logger.
+// Messages below this level will be discarded.
+func (l *Logger) SetLevel(level Level) {
+	l.minLevel = level
+}
+
+// GetLevel returns the current minimum log level.
+func (l *Logger) GetLevel() Level {
+	return l.minLevel
+}
+
 func ResolveLogger() *Logger {
 	return l
 }
 
 func (l *Logger) Info(msg interface{}) {
+	if l.minLevel <= INFO {
 		l.infoLogger.Println(msg)
 	}
+}
 
 func (l *Logger) Debug(msg interface{}) {
+	if l.minLevel <= DEBUG {
 		l.debugLogger.Println(msg)
 	}
+}
 
 func (l *Logger) Warning(msg interface{}) {
+	if l.minLevel <= WARNING {
 		l.warningLogger.Println(msg)
 	}
+}
 
 func (l *Logger) Error(msg interface{}) {
+	if l.minLevel <= ERROR {
 		l.errorLogger.Println(msg)
 	}
+}
 
-func CloseLogsFile() {
+func (l *Logger) Close() error {
-	if logsFile != nil {
+	if l.file != nil {
-		defer logsFile.Close()
+		return l.file.Close()
 	}
+	return nil
 }

logger/logger_test.go

@@ -61,7 +61,7 @@ func TestInfo(t *testing.T) {
 		t.Error("error testing info")
 	}
 	t.Cleanup(func() {
-		CloseLogsFile()
+		l.Close()
 	})
 }
 
@@ -84,7 +84,7 @@ func TestWarning(t *testing.T) {
 		t.Error("failed testing warning")
 	}
 	t.Cleanup(func() {
-		CloseLogsFile()
+		l.Close()
 	})
 }
 
@@ -106,7 +106,7 @@ func TestDebug(t *testing.T) {
 		t.Error("error testing debug")
 	}
 	t.Cleanup(func() {
-		CloseLogsFile()
+		l.Close()
 	})
 }
 
@@ -128,6 +128,173 @@ func TestError(t *testing.T) {
 		t.Error("failed testing error")
 	}
 	t.Cleanup(func() {
-		CloseLogsFile()
+		l.Close()
 	})
 }
+
+func TestLevelFiltering(t *testing.T) {
+	t.Run("NewLoggerWithLevel_DEBUG", func(t *testing.T) {
+		path := filepath.Join(t.TempDir(), uuid.NewString())
+		l := NewLoggerWithLevel(&LogFileDriver{FilePath: path}, DEBUG)
+		l.Debug("debug-msg")
+		l.Info("info-msg")
+		l.Warning("warn-msg")
+		l.Error("err-msg")
+		l.Close()
+
+		b, _ := os.ReadFile(path)
+		content := string(b)
+		if !strings.Contains(content, "debug-msg") {
+			t.Error("expected debug-msg to be logged at DEBUG level")
+		}
+		if !strings.Contains(content, "info-msg") {
+			t.Error("expected info-msg to be logged at DEBUG level")
+		}
+		if !strings.Contains(content, "warn-msg") {
+			t.Error("expected warn-msg to be logged at DEBUG level")
+		}
+		if !strings.Contains(content, "err-msg") {
+			t.Error("expected err-msg to be logged at DEBUG level")
+		}
+	})
+
+	t.Run("NewLoggerWithLevel_INFO", func(t *testing.T) {
+		path := filepath.Join(t.TempDir(), uuid.NewString())
+		l := NewLoggerWithLevel(&LogFileDriver{FilePath: path}, INFO)
+		l.Debug("debug-msg")
+		l.Info("info-msg")
+		l.Warning("warn-msg")
+		l.Error("err-msg")
+		l.Close()
+
+		b, _ := os.ReadFile(path)
+		content := string(b)
+		if strings.Contains(content, "debug-msg") {
+			t.Error("debug-msg should NOT be logged at INFO minimum level")
+		}
+		if !strings.Contains(content, "info-msg") {
+			t.Error("expected info-msg to be logged at INFO level")
+		}
+		if !strings.Contains(content, "warn-msg") {
+			t.Error("expected warn-msg to be logged at INFO level")
+		}
+		if !strings.Contains(content, "err-msg") {
+			t.Error("expected err-msg to be logged at INFO level")
+		}
+	})
+
+	t.Run("NewLoggerWithLevel_WARNING", func(t *testing.T) {
+		path := filepath.Join(t.TempDir(), uuid.NewString())
+		l := NewLoggerWithLevel(&LogFileDriver{FilePath: path}, WARNING)
+		l.Debug("debug-msg")
+		l.Info("info-msg")
+		l.Warning("warn-msg")
+		l.Error("err-msg")
+		l.Close()
+
+		b, _ := os.ReadFile(path)
+		content := string(b)
+		if strings.Contains(content, "debug-msg") {
+			t.Error("debug-msg should NOT be logged at WARNING minimum level")
+		}
+		if strings.Contains(content, "info-msg") {
+			t.Error("info-msg should NOT be logged at WARNING minimum level")
+		}
+		if !strings.Contains(content, "warn-msg") {
+			t.Error("expected warn-msg to be logged at WARNING level")
+		}
+		if !strings.Contains(content, "err-msg") {
+			t.Error("expected err-msg to be logged at WARNING level")
+		}
+	})
+
+	t.Run("NewLoggerWithLevel_ERROR", func(t *testing.T) {
+		path := filepath.Join(t.TempDir(), uuid.NewString())
+		l := NewLoggerWithLevel(&LogFileDriver{FilePath: path}, ERROR)
+		l.Debug("debug-msg")
+		l.Info("info-msg")
+		l.Warning("warn-msg")
+		l.Error("err-msg")
+		l.Close()
+
+		b, _ := os.ReadFile(path)
+		content := string(b)
+		if strings.Contains(content, "debug-msg") {
+			t.Error("debug-msg should NOT be logged at ERROR minimum level")
+		}
+		if strings.Contains(content, "info-msg") {
+			t.Error("info-msg should NOT be logged at ERROR minimum level")
+		}
+		if strings.Contains(content, "warn-msg") {
+			t.Error("warn-msg should NOT be logged at ERROR minimum level")
+		}
+		if !strings.Contains(content, "err-msg") {
+			t.Error("expected err-msg to be logged at ERROR level")
+		}
+	})
+
+	t.Run("SetLevel_dynamically", func(t *testing.T) {
+		path := filepath.Join(t.TempDir(), uuid.NewString())
+		l := NewLogger(&LogFileDriver{FilePath: path})
+
+		// Default is DEBUG, so debug messages are logged
+		l.Debug("debug-msg-before")
+		l.SetLevel(WARNING)
+		l.Debug("debug-msg-after")
+		l.Info("info-msg-after")
+		l.Warning("warn-msg-after")
+		l.Error("err-msg-after")
+		l.Close()
+
+		b, _ := os.ReadFile(path)
+		content := string(b)
+		if !strings.Contains(content, "debug-msg-before") {
+			t.Error("expected debug-msg-before to be logged before level change")
+		}
+		if strings.Contains(content, "debug-msg-after") {
+			t.Error("debug-msg-after should NOT be logged after setting level to WARNING")
+		}
+		if strings.Contains(content, "info-msg-after") {
+			t.Error("info-msg-after should NOT be logged after setting level to WARNING")
+		}
+		if !strings.Contains(content, "warn-msg-after") {
+			t.Error("expected warn-msg-after to be logged at WARNING level")
+		}
+		if !strings.Contains(content, "err-msg-after") {
+			t.Error("expected err-msg-after to be logged at WARNING level")
+		}
+	})
+}
+
+func TestLevelString(t *testing.T) {
+	tests := []struct {
+		level Level
+		want  string
+	}{
+		{DEBUG, "debug"},
+		{INFO, "info"},
+		{WARNING, "warning"},
+		{ERROR, "error"},
+		{Level(99), "unknown"},
+	}
+	for _, tt := range tests {
+		if got := tt.level.String(); got != tt.want {
+			t.Errorf("Level(%d).String() = %q, want %q", tt.level, got, tt.want)
+		}
+	}
+}
+
+func TestGetLevel(t *testing.T) {
+	path := filepath.Join(t.TempDir(), uuid.NewString())
+	l := NewLoggerWithLevel(&LogFileDriver{FilePath: path}, WARNING)
+	defer l.Close()
+
+	if l.GetLevel() != WARNING {
+		t.Errorf("GetLevel() = %d, want %d", l.GetLevel(), WARNING)
+	}
+
+	l.SetLevel(INFO)
+	if l.GetLevel() != INFO {
+		t.Errorf("GetLevel() after SetLevel(INFO) = %d, want %d", l.GetLevel(), INFO)
+	}
+}

templates.go

@@ -1,4 +1,4 @@
-// Copyright (c) 2024 Zeni Kim <zenik@smarteching.com>
+// Copyright (c) 2026 Zeni Kim <zenik@smarteching.com>
 // Use of this source code is governed by MIT-style
 // license that can be found in the LICENSE file.
 
@@ -6,15 +6,337 @@ package core
 
 import (
 	"embed"
+	"fmt"
 	"html/template"
 	"io/fs"
+	"math"
+	"reflect"
 	"strings"
+	"time"
+	"unicode"
+	"golang.org/x/text/language"
+	"golang.org/x/text/message"
 )
 
 var tmpl *template.Template = nil
 
+// ─────────────────────────────────────────────
+// Struct helpers
+// ─────────────────────────────────────────────
+
+// hasField checks if a struct has a given field name.
+// It can be used inside Go html/templates like:
+//
+//	{{if hasField . "FieldA"}}<a>{{.FieldA}}</a>{{end}}
+func hasField(v interface{}, name string) bool {
+	rv := reflect.ValueOf(v)
+	if rv.Kind() == reflect.Ptr {
+		rv = rv.Elem()
+	}
+	if rv.Kind() != reflect.Struct {
+		return false
+	}
+	return rv.FieldByName(name).IsValid()
+}
+
+// ─────────────────────────────────────────────
+// String helpers
+// ─────────────────────────────────────────────
+
+// capitalize uppercases the first letter of a string and lowercases the rest.
+//
+//	{{capitalize "hello world"}} → "Hello world"
+func capitalize(s string) string {
+	if s == "" {
+		return ""
+	}
+	runes := []rune(s)
+	runes[0] = unicode.ToUpper(runes[0])
+	for i := 1; i < len(runes); i++ {
+		runes[i] = unicode.ToLower(runes[i])
+	}
+	return string(runes)
+}
+
+// prepend adds a prefix string to the beginning of s.
+//
+//	{{prepend "World" "Hello, "}} → "Hello, World"
+func prepend(s, prefix string) string {
+	return prefix + s
+}
+
+// strAppend adds a suffix string to the end of s.
+// Named strAppend to avoid collision with the builtin append keyword.
+//
+//	{{strAppend "Hello" "!"}} → "Hello!"
+func strAppend(s, suffix string) string {
+	return s + suffix
+}
+
+// split divides s into a slice of substrings separated by sep.
+// Useful when combined with range in templates.
+//
+//	{{range split .Tags ","}}...{{end}}
+func split(s, sep string) []string {
+	return strings.Split(s, sep)
+}
+
+// truncate cuts s to at most n characters. Designed for pipeline use:
+//   {{.Title | truncate 30}}
+func truncate(n int, s string) string {
+    runes := []rune(s)
+    if len(runes) <= n {
+        return s
+    }
+    return string(runes[:n]) + "…"
+}
+
+// ─────────────────────────────────────────────
+// Number helpers
+// ─────────────────────────────────────────────
+
+// fmtNumber formats an integer or float with thousands separators
+// using the English locale (e.g. 1000000 → "1,000,000").
+//
+//	{{fmtNumber .Price}}
+func fmtNumber(v interface{}) string {
+	p := message.NewPrinter(language.English)
+	switch n := v.(type) {
+	case int:
+		return p.Sprintf("%d", n)
+	case int64:
+		return p.Sprintf("%d", n)
+	case float64:
+		// trim unnecessary trailing zeros
+		formatted := p.Sprintf("%.2f", n)
+		return formatted
+	case float32:
+		return p.Sprintf("%.2f", n)
+	default:
+		return fmt.Sprintf("%v", v)
+	}
+}
+
+// ─────────────────────────────────────────────
+// Date & time helpers
+// ─────────────────────────────────────────────
+
+// fmtDate formats a time.Time value using a named layout or a custom Go layout string.
+// Named layouts: "short" → "02 Jan 2006", "long" → "02 January 2006",
+// "iso" → "2006-01-02", "datetime" → "02 Jan 2006 15:04".
+// Any other string is used directly as a Go time layout.
+//
+//	{{fmtDate .PublishedAt "short"}}
+//	{{fmtDate .CreatedAt "02/01/2006"}}
+func fmtDate(t time.Time, layout string) string {
+	switch layout {
+	case "short":
+		return t.Format("02 Jan 2006")
+	case "long":
+		return t.Format("02 January 2006")
+	case "iso":
+		return t.Format("2006-01-02")
+	case "datetime":
+		return t.Format("02 Jan 2006 15:04")
+	default:
+		return t.Format(layout)
+	}
+}
+
+// timeAgo returns a human-readable relative time string from now.
+//
+//	{{timeAgo .PublishedAt}} → "3 hours ago", "2 days ago", "just now"
+func timeAgo(t time.Time) string {
+	diff := time.Since(t)
+
+	switch {
+	case diff < time.Minute:
+		return "just now"
+	case diff < time.Hour:
+		m := int(math.Round(diff.Minutes()))
+		return plural(m, "minute") + " ago"
+	case diff < 24*time.Hour:
+		h := int(math.Round(diff.Hours()))
+		return plural(h, "hour") + " ago"
+	case diff < 7*24*time.Hour:
+		d := int(math.Round(diff.Hours() / 24))
+		return plural(d, "day") + " ago"
+	case diff < 30*24*time.Hour:
+		w := int(math.Round(diff.Hours() / 24 / 7))
+		return plural(w, "week") + " ago"
+	case diff < 365*24*time.Hour:
+		mo := int(math.Round(diff.Hours() / 24 / 30))
+		return plural(mo, "month") + " ago"
+	default:
+		y := int(math.Round(diff.Hours() / 24 / 365))
+		return plural(y, "year") + " ago"
+	}
+}
+
+// plural is an internal helper that returns "1 item" or "N items".
+func plural(n int, unit string) string {
+	if n == 1 {
+		return fmt.Sprintf("%d %s", n, unit)
+	}
+	return fmt.Sprintf("%d %ss", n, unit)
+}
+
+// ─────────────────────────────────────────────
+// Collection helpers
+// ─────────────────────────────────────────────
+
+// first returns the first element of a slice, or nil if empty.
+//
+//	{{with first .Items}}{{.Name}}{{end}}
+func first(slice interface{}) interface{} {
+	rv := reflect.ValueOf(slice)
+	if rv.Kind() != reflect.Slice || rv.Len() == 0 {
+		return nil
+	}
+	return rv.Index(0).Interface()
+}
+
+// last returns the last element of a slice, or nil if empty.
+//
+//	{{with last .Items}}{{.Name}}{{end}}
+func last(slice interface{}) interface{} {
+	rv := reflect.ValueOf(slice)
+	if rv.Kind() != reflect.Slice || rv.Len() == 0 {
+		return nil
+	}
+	return rv.Index(rv.Len() - 1).Interface()
+}
+
+// sliceOf returns a sub-range of a slice from index start (inclusive) to end (exclusive).
+// Named sliceOf to avoid collision with the builtin slice expression.
+//
+//	{{range sliceOf .Items 0 3}}...{{end}}
+func sliceOf(slice interface{}, start, end int) interface{} {
+	rv := reflect.ValueOf(slice)
+	if rv.Kind() != reflect.Slice {
+		return nil
+	}
+	if start < 0 {
+		start = 0
+	}
+	if end > rv.Len() {
+		end = rv.Len()
+	}
+	return rv.Slice(start, end).Interface()
+}
+
+// contains reports whether item is present in slice (or substr in a string).
+//
+//	{{if contains .Tags "go"}}...{{end}}
+//	{{if contains .Bio "engineer"}}...{{end}}
+func contains(collection, item interface{}) bool {
+	// string substring check
+	if s, ok := collection.(string); ok {
+		if sub, ok := item.(string); ok {
+			return strings.Contains(s, sub)
+		}
+		return false
+	}
+	rv := reflect.ValueOf(collection)
+	if rv.Kind() != reflect.Slice {
+		return false
+	}
+	for i := 0; i < rv.Len(); i++ {
+		if reflect.DeepEqual(rv.Index(i).Interface(), item) {
+			return true
+		}
+	}
+	return false
+}
+
+// join concatenates the elements of a string slice with sep as separator.
+//
+//	{{join .Tags ", "}}
+func join(slice []string, sep string) string {
+	return strings.Join(slice, sep)
+}
+
+// ─────────────────────────────────────────────
+// Logic helpers
+// ─────────────────────────────────────────────
+
+// defaultVal returns fallback if value is the zero value or an empty string.
+//
+//	{{defaultVal "N/A" .OptionalField}}
+func defaultVal(fallback, value interface{}) interface{} {
+	if value == nil {
+		return fallback
+	}
+	rv := reflect.ValueOf(value)
+	if rv.IsZero() {
+		return fallback
+	}
+	return value
+}
+
+// ternary returns trueVal if condition is true, falseVal otherwise.
+//
+//	{{ternary "Active" "Inactive" .IsActive}}
+func ternary(trueVal, falseVal interface{}, condition bool) interface{} {
+	if condition {
+		return trueVal
+	}
+	return falseVal
+}
+
+// coalesce returns the first non-empty, non-nil value from the provided list.
+//
+//	{{coalesce .Nickname .FullName "Anonymous"}}
+func coalesce(values ...interface{}) interface{} {
+	for _, v := range values {
+		if v == nil {
+			continue
+		}
+		rv := reflect.ValueOf(v)
+		if !rv.IsZero() {
+			return v
+		}
+	}
+	return nil
+}
+
+// ─────────────────────────────────────────────
+// FuncMap registry
+// ─────────────────────────────────────────────
+
+func funcMap() template.FuncMap {
+	return template.FuncMap{
+		// Struct
+		"hasField": hasField,
+		// String
+		"capitalize": capitalize,
+		"prepend":    prepend,
+		"strAppend":  strAppend,
+		"split":      split,
+		"truncate":   truncate,
+		// Number
+		"fmtNumber": fmtNumber,
+		// Date & time
+		"fmtDate": fmtDate,
+		"timeAgo": timeAgo,
+		// Collections
+		"first":   first,
+		"last":    last,
+		"sliceOf": sliceOf,
+		"contains": contains,
+		"join":    join,
+		// Logic
+		"defaultVal": defaultVal,
+		"ternary":    ternary,
+		"coalesce":   coalesce,
+	}
+}
+
+// ─────────────────────────────────────────────
+// Template initializer
+// ─────────────────────────────────────────────
+
 func NewTemplates(components embed.FS, templates embed.FS) {
-	// templates
 	var paths []string
 	fs.WalkDir(components, ".", func(path string, d fs.DirEntry, err error) error {
 		if strings.Contains(d.Name(), ".html") {
@@ -31,6 +353,10 @@ func NewTemplates(components embed.FS, templates embed.FS) {
 		return nil
 	})
 
-	tmpla := template.Must(template.ParseFS(components, paths...))
+	tmpl = template.Must(
-	tmpl = template.Must(tmpla.ParseFS(templates, pathst...))
+		template.New("").
+			Funcs(funcMap()).
+			ParseFS(components, paths...),
+	)
+	tmpl = template.Must(tmpl.ParseFS(templates, pathst...))
 }