Make default React App working

.gitignore

@@ -21,3 +21,11 @@
 # Go workspace file
 go.work
 
+# Locally used configuration file
+/config.yaml
+
+# Vite build file
+/.vite
+
+# Log files
+*.log

BUILD.md

@@ -0,0 +1,20 @@
+## Projekt anlegen
+
+npm init vite@latest ui -- --template react-ts
+cd ui
+npm install
+
+cd ..
+go get 
+
+
+## Ausführen
+
+set GOTMPDIR=C:\MYCOMP
+go run .\cmd\web
+npm run dev
+
+npm run build
+
+
+nodemon --watch './**/*.go' --signal SIGTERM --exec 'go' run cmd/MyProgram/main.go

cmd/ncDocConverth/main.go

@@ -0,0 +1,62 @@
+package main
+
+import (
+	"crypto/tls"
+	"net/http"
+	"time"
+
+	"rpjosh.de/ncDocConverter/internal/models"
+	"rpjosh.de/ncDocConverter/pkg/logger"
+)
+
+type WebApplication struct {
+	logger *logger.Logger
+	config *models.WebConfig
+}
+
+func main() {
+	defer logger.CloseFile()
+
+	config, err := models.SetConfig()
+	if err != nil {
+		logger.Error(err.Error())
+	}
+
+	tlsConfig := &tls.Config{
+		CurvePreferences: []tls.CurveID{tls.X25519, tls.CurveP256},
+		MinVersion:       tls.VersionTLS12,
+		CipherSuites: []uint16{
+			tls.TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,
+			tls.TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,
+			tls.TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,
+			tls.TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,
+			tls.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
+			tls.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
+		},
+	}
+
+	webApp := WebApplication{
+		logger: logger.GetGlobalLogger(),
+		config: config,
+	}
+
+	srv := &http.Server{
+		Addr:         config.Server.Address,
+		ErrorLog:     nil,
+		Handler:      webApp.routes(),
+		TLSConfig:    tlsConfig,
+		IdleTimeout:  time.Minute,
+		ReadTimeout:  5 * time.Second,
+		WriteTimeout: 10 * time.Second,
+	}
+
+	logger.Info("Server started on %s", config.Server.Address)
+	var errw error
+	if config.Server.Certificate == "" {
+		errw = srv.ListenAndServe()
+	} else {
+		errw = srv.ListenAndServeTLS(config.Server.Certificate+"cert.pem", config.Server.Certificate+"key.pem")
+	}
+
+	logger.Error("Failed to run the HTTP Server: %s", errw)
+}

cmd/ncDocConverth/middleware.go

@@ -0,0 +1,68 @@
+package main
+
+import (
+	"fmt"
+	"net/http"
+	"runtime/debug"
+
+	"github.com/justinas/nosurf"
+	"rpjosh.de/ncDocConverter/pkg/logger"
+)
+
+func secureHeaders(next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		// Note: This is split across multiple lines for readability. You don't
+		// need to do this in your own code.
+		w.Header().Set("Content-Security-Policy",
+			//"default-src 'self' localhost:*; style-src 'self' fonts.googleapis.com localhost:*; font-src fonts.gstatic.com")
+			"default-src * 'unsafe-inline' 'unsafe-eval'; script-src * 'unsafe-inline' 'unsafe-eval'; connect-src * 'unsafe-inline'; img-src * data: blob: 'unsafe-inline'; frame-src *; style-src * 'unsafe-inline';")
+		w.Header().Set("Referrer-Policy", "origin-when-cross-origin")
+		w.Header().Set("X-Content-Type-Options", "nosniff")
+		w.Header().Set("X-Frame-Options", "deny")
+		w.Header().Set("X-XSS-Protection", "0")
+
+		next.ServeHTTP(w, r)
+	})
+}
+
+func (app *WebApplication) logRequest(next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		logger.Info("%s - %s %s %s", r.RemoteAddr, r.Proto, r.Method, r.URL.RequestURI())
+
+		next.ServeHTTP(w, r)
+	})
+}
+
+func (app *WebApplication) recoverPanic(next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		// Create a deferred function (which will always be run in the event
+		// of a panic as Go unwinds the stack).
+		defer func() {
+			// Use the builtin recover function to check if there has been a
+			// panic or not. If there has...
+			if err := recover(); err != nil {
+				// Set a "Connection: close" header on the response.
+				w.Header().Set("Connection", "close")
+				// Call the app.serverError helper method to return a 500
+				// Internal Server response.
+				trace := fmt.Sprintf("%s\n%s", fmt.Errorf("%s", err).Error(), debug.Stack())
+				logger.Error(trace)
+			}
+		}()
+
+		next.ServeHTTP(w, r)
+	})
+}
+
+// Create a NoSurf middleware function which uses a customized CSRF cookie with
+// the Secure, Path and HttpOnly attributes set.
+func noSurf(next http.Handler) http.Handler {
+	csrfHandler := nosurf.New(next)
+	csrfHandler.SetBaseCookie(http.Cookie{
+		HttpOnly: true,
+		Path:     "/",
+		Secure:   true,
+	})
+
+	return csrfHandler
+}

cmd/ncDocConverth/routes.go

@@ -0,0 +1,23 @@
+package main
+
+import (
+	"net/http"
+
+	"github.com/go-chi/chi/v5"
+	"github.com/go-chi/chi/v5/middleware"
+	"rpjosh.de/ncDocConverter/internal/api"
+	"rpjosh.de/ncDocConverter/internal/frontend"
+)
+
+func (app *WebApplication) routes() http.Handler {
+	frontend := frontend.Frontend{Logger: app.logger, Config: app.config}
+	api := api.Api{Logger: app.logger, Config: app.config}
+
+	router := chi.NewRouter()
+	router.Use(middleware.RealIP, app.recoverPanic, app.logRequest, secureHeaders)
+
+	frontend.SetupServer(router)
+	api.SetupServer(router)
+
+	return router
+}

configs/config.yaml

@@ -0,0 +1,19 @@
+server:
+  address: ":4000"
+
+  # Path to the folder with the certificates file (cert.pem and key.pem) for using TLS
+  certificate: "/etc/letsencrypt/live/"
+
+  # Enables the development server with hot reload function (spans a vite server)
+  developmentServer: false
+  # Port on which the development server should listen to
+  developmentServerPort: 5173
+
+logging:
+  # Minimum log Level for printing to the console (debug, info, warning, error, fatal)
+  printLogLevel: info
+  # Minimum log level for writing into the log file (debug, info, warning, error, fatal)
+  writeLogLevel: warning
+
+  # File path to log (empty = disabled)
+  logFilePath: "/home/myUser/logs/ncDocConverter.live"

go.mod

@@ -1,3 +1,12 @@
 module rpjosh.de/ncDocConverter
 
 go 1.18
+
+require (
+	github.com/go-chi/chi/v5 v5.0.7 // indirect
+	github.com/go-yaml/yaml v2.1.0+incompatible // indirect
+	github.com/justinas/nosurf v1.1.1 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+)
+
+// https://zhwt.github.io/yaml-to-go/

go.sum

@@ -0,0 +1,9 @@
+github.com/go-chi/chi/v5 v5.0.7 h1:rDTPXLDHGATaeHvVlLcR4Qe0zftYethFucbjVQ1PxU8=
+github.com/go-chi/chi/v5 v5.0.7/go.mod h1:DslCQbL2OYiznFReuXYUmQ2hGd1aDpCnlMNITLSKoi8=
+github.com/go-yaml/yaml v2.1.0+incompatible h1:RYi2hDdss1u4YE7GwixGzWwVo47T8UQwnTLB6vQiq+o=
+github.com/go-yaml/yaml v2.1.0+incompatible/go.mod h1:w2MrLa16VYP0jy6N7M5kHaCkaLENm+P+Tv+MfurjSw0=
+github.com/justinas/nosurf v1.1.1 h1:92Aw44hjSK4MxJeMSyDa7jwuI9GR2J/JCQiaKvXXSlk=
+github.com/justinas/nosurf v1.1.1/go.mod h1:ALpWdSbuNGy2lZWtyXdjkYv4edL23oSEgfBT1gPJ5BQ=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

internal/api/app.go

@@ -0,0 +1,17 @@
+package api
+
+import (
+	"github.com/go-chi/chi/v5"
+
+	"rpjosh.de/ncDocConverter/internal/models"
+	"rpjosh.de/ncDocConverter/pkg/logger"
+)
+
+type Api struct {
+	Logger 	*logger.Logger
+	Config 	*models.WebConfig
+}
+
+func (api *Api) SetupServer(router *chi.Mux) {
+	api.routes(router)
+}

internal/api/routes.go

@@ -0,0 +1,7 @@
+package api
+
+import "github.com/go-chi/chi/v5"
+
+func (api *Api) routes(router *chi.Mux) {
+
+}

internal/frontend/app.go

@@ -0,0 +1,28 @@
+package frontend
+
+import (
+	"text/template"
+
+	"github.com/go-chi/chi/v5"
+	"rpjosh.de/ncDocConverter/internal/models"
+	"rpjosh.de/ncDocConverter/pkg/logger"
+)
+
+// Contains the shared dependencies needed for the WebApplication
+type Frontend struct {
+	Logger        *logger.Logger
+	Config        *models.WebConfig
+	templateCache map[string]*template.Template
+}
+
+func (app *Frontend) SetupServer(router *chi.Mux) {
+	templateCache, err := newTemplateCache()
+	if err != nil {
+		logger.Fatal("Failed to parse the templates", err)
+	}
+	app.templateCache = templateCache
+
+	app.setServerConfiguration()
+
+	app.routes(router)
+}

internal/frontend/handler.go

@@ -0,0 +1,31 @@
+package frontend
+
+import (
+	"bytes"
+	"fmt"
+	"net/http"
+)
+
+func (app *Frontend) home(w http.ResponseWriter, r *http.Request) {
+	app.render(w, http.StatusOK, "main.tmpl.html", app.newTemplateData(r))
+}
+
+func (app *Frontend) render(w http.ResponseWriter, status int, page string, data *templateData) {
+	ts, ok := app.templateCache[page]
+	if !ok {
+		err := fmt.Errorf("the template %s does not exist", page)
+		app.serverError(w, err)
+		return
+	}
+
+	buf := new(bytes.Buffer)
+
+	err := ts.ExecuteTemplate(buf, "base", data)
+	if err != nil {
+		app.serverError(w, err)
+		return
+	}
+
+	w.WriteHeader(status)
+	buf.WriteTo(w)
+}

internal/frontend/helpers.go

@@ -0,0 +1,32 @@
+package frontend
+
+import (
+	"fmt"
+	"net/http"
+	"runtime/debug"
+
+	"rpjosh.de/ncDocConverter/pkg/logger"
+)
+
+// The serverError helper writes an error message and stack trace to the errorLog,
+// then sends a generic 500 Internal Server Error response to the user.
+func (app *Frontend) serverError(w http.ResponseWriter, err error) {
+    trace := fmt.Sprintf("%s\n%s", err.Error(), debug.Stack())
+    logger.Error(trace)
+
+    http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
+}
+
+// The clientError helper sends a specific status code and corresponding description
+// to the user. We'll use this later in the book to send responses like 400 "Bad
+// Request" when there's a problem with the request that the user sent.
+func (app *Frontend) clientError(w http.ResponseWriter, status int) {
+    http.Error(w, http.StatusText(status), status)
+}
+
+// For consistency, we'll also implement a notFound helper. This is simply a
+// convenience wrapper around clientError which sends a 404 Not Found response to
+// the user.
+func (app *Frontend) notFound(w http.ResponseWriter) {
+    app.clientError(w, http.StatusNotFound)
+}

internal/frontend/routes.go

@@ -0,0 +1,83 @@
+package frontend
+
+import (
+	"fmt"
+	"io/fs"
+	"net/http"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"strings"
+
+	"github.com/go-chi/chi/v5"
+	"rpjosh.de/ncDocConverter/pkg/logger"
+	"rpjosh.de/ncDocConverter/web"
+)
+
+func (app *Frontend) routes(router *chi.Mux) {
+
+	if app.Config.Server.DevelopmentServer {
+		app.renderForDev(router)
+	} else {
+		app.renderForProd(router)
+	}
+
+	router.Route("/", func(mainRouter chi.Router) {
+		mainRouter.Get("/", app.home)
+	})
+
+	router.NotFound(func(w http.ResponseWriter, r *http.Request) {
+		app.notFound(w)
+	})
+}
+
+// Runs the vite Server as an sub process for serving the files with the hot reload function.
+// The src directory will also be exposed from within this server for the asserts
+func (app *Frontend) renderForDev(router *chi.Mux) {
+	// serve assets from src folder
+	FileServer(router, "/src", http.Dir("./web/app/src"))
+
+	logger.Info("[DEV] Started vite dev server on http://localhost:%d", app.Config.Server.DevelopmentServerPort)
+	vite := exec.Command(filepath.Join(".", "node_modules", ".bin", "vite"), "--mode", "development", "--port", fmt.Sprint(app.Config.Server.DevelopmentServerPort))
+	vite.Dir = "./web/app/"
+	vite.Stdout = os.Stdout
+	vite.Stderr = os.Stderr
+	err := vite.Start()
+	if err != nil {
+		logger.Error("Failed to start the vite development server: %s", err)
+	}
+}
+
+// This serves all the needed files from the ebedded file system within the binary
+// -> no additional WebServer
+func (app *Frontend) renderForProd(router *chi.Mux) {
+	staticFolder, err := fs.Sub(web.FrontendFiles, "app/dist/assets")
+	if err != nil {
+		logger.Fatal("Cannot access the embedded directory 'src'. %s", err)
+	}
+	FileServer(router, "/assets", http.FS(staticFolder))
+}
+
+func FileServer(r chi.Router, path string, root http.FileSystem) {
+	if strings.ContainsAny(path, "{}*") {
+		logger.Info("FileServer does not permit any URL parameters.")
+	}
+
+	if path != "/" && path[len(path)-1] != '/' {
+		r.Get(path, http.RedirectHandler(path+"/", http.StatusMovedPermanently).ServeHTTP)
+		path += "/"
+	}
+	path += "*"
+
+	r.Get(path, func(w http.ResponseWriter, r *http.Request) {
+		if strings.HasSuffix(r.URL.Path, "/") {
+			http.NotFound(w, r)
+			return
+		}
+
+		rctx := chi.RouteContext(r.Context())
+		pathPrefix := strings.TrimSuffix(rctx.RoutePattern(), "/*")
+		fs := http.StripPrefix(pathPrefix, http.FileServer(root))
+		fs.ServeHTTP(w, r)
+	})
+}

internal/frontend/templates.go

@@ -0,0 +1,89 @@
+package frontend
+
+import (
+	"fmt"
+	"io/fs"
+	"net/http"
+	"path/filepath"
+	"text/template"
+
+	"rpjosh.de/ncDocConverter/web"
+)
+
+type serverConfig struct {
+	Version      string
+	Development  bool
+	SourceServer string
+}
+
+// the server config does never change again -> set this once at startup
+var serverConf *serverConfig = &serverConfig{
+	Version: "1.0.0",
+}
+
+type templateData struct {
+	Version      string
+	ServerConfig *serverConfig
+}
+
+// Returns the absolute URL on the WebServer to the given TypeScript file given without the file extension
+// main -> http://localhost:4000/assets/main.js
+func getJSFile(file string) string {
+	if serverConf.Development {
+		return serverConf.SourceServer + "src/" + file + ".tsx"
+	}
+
+	return serverConf.SourceServer + "assets/" + file + ".js"
+}
+
+var functions = template.FuncMap{
+	"getJSFile": getJSFile,
+}
+
+func (app *Frontend) setServerConfiguration() {
+	serverConf.Development = app.Config.Server.DevelopmentServer
+
+	sourceServer := ""
+	if serverConf.Development {
+		sourceServer = fmt.Sprintf("http://localhost:%d/", app.Config.Server.DevelopmentServerPort)
+	} else {
+		sourceServer = fmt.Sprintf("http://localhost%s/", app.Config.Server.Address)
+	}
+	serverConf.SourceServer = sourceServer
+}
+
+func (app *Frontend) newTemplateData(r *http.Request) *templateData {
+	return &templateData{
+		ServerConfig: serverConf,
+	}
+}
+
+// Initializes a new cache containing all templates of the application
+// from the embedded file system
+func newTemplateCache() (map[string]*template.Template, error) {
+	cache := map[string]*template.Template{}
+
+	pages, err := fs.Glob(&web.TemplateFiles, "template/pages/*.tmpl.html")
+	if err != nil {
+		return nil, err
+	}
+
+	for _, page := range pages {
+		name := filepath.Base(page)
+
+		patterns := []string{
+			"template/base.tmpl.html",
+			"template/vitejs.tmpl.html",
+			page,
+		}
+
+		ts, err := template.New(name).Funcs(functions).ParseFS(web.TemplateFiles, patterns...)
+		if err != nil {
+			return nil, err
+		}
+
+		cache[name] = ts
+	}
+
+	return cache, nil
+}

internal/models/webconfig.go

@@ -0,0 +1,95 @@
+package models
+
+import (
+	"flag"
+	"fmt"
+	"os"
+
+	yaml "gopkg.in/yaml.v3"
+	"rpjosh.de/ncDocConverter/pkg/logger"
+)
+
+type WebConfig struct {
+	Server  Server  `yaml:"server"`
+	Logging Logging `yaml:"logging"`
+}
+
+type Server struct {
+	Address               string `yaml:"address"`
+	Certificate           string `yaml:"certificate"`
+	DevelopmentServer     bool   `yaml:"developmentServer"`
+	DevelopmentServerPort int    `yaml:"developmentServerPort"`
+}
+
+type Logging struct {
+	PrintLogLevel string `yaml:"printLogLevel"`
+	WriteLogLevel string `yaml:"writeLogLevel"`
+	LogFilePath   string `yaml:"logFilePath"`
+}
+
+func ParseConfig(webConfig *WebConfig, file string) (*WebConfig, error) {
+	if file == "" {
+		return webConfig, nil
+	}
+
+	dat, err := os.ReadFile(file)
+	if err != nil {
+		return nil, err
+	}
+
+	if err := yaml.Unmarshal(dat, &webConfig); err != nil {
+		return nil, err
+	}
+
+	return webConfig, nil
+}
+
+func getDefaultConfig() *WebConfig {
+	return &WebConfig{
+		Server: Server{
+			Address:               ":4000",
+			DevelopmentServerPort: 5173,
+		},
+		Logging: Logging{
+			PrintLogLevel: "info",
+			WriteLogLevel: "warning",
+		},
+	}
+}
+
+// Applies the cli and the configuration options from the config files
+func SetConfig() (*WebConfig, error) {
+	configPath := "./config.yaml"
+	// the path of the configuration file is needed first to determine the "default" values
+	for i, arg := range os.Args {
+		if arg == "-config" || arg == "--config" && len(os.Args) > i {
+			configPath = os.Args[i+1]
+			break
+		}
+	}
+	webConfig := getDefaultConfig()
+	webConfig, err := ParseConfig(webConfig, configPath)
+	if err != nil {
+		return nil, fmt.Errorf("unable to parse the configuration file '%s': %s", configPath, err)
+	}
+
+	_ = flag.String("config", "./config.yaml", "Path to the configuration file (see configs/config.yaml) for an example")
+	address := flag.String("address", webConfig.Server.Address, "Address and port on which the api and the web server should listen to")
+	printLogLevel := flag.String("printLogLevel", webConfig.Logging.PrintLogLevel, "Minimum log level to log (debug, info, warning, error, fatal)")
+	devServer := flag.Bool("dev", webConfig.Server.DevelopmentServer, "Enables the development server with hot reload support")
+
+	flag.Parse()
+	webConfig.Server.Address = *address
+	webConfig.Logging.PrintLogLevel = *printLogLevel
+	webConfig.Server.DevelopmentServer = *devServer
+
+	defaultLogger := logger.Logger{
+		PrintLevel:  logger.GetLevelByName(webConfig.Logging.PrintLogLevel),
+		LogLevel:    logger.GetLevelByName(webConfig.Logging.WriteLogLevel),
+		LogFilePath: webConfig.Logging.LogFilePath,
+		PrintSource: true,
+	}
+	logger.SetGlobalLogger(&defaultLogger)
+
+	return webConfig, err
+}

main.go

@@ -1,22 +0,0 @@
-package main
-
-import (
-	"rpjosh.de/ncDocConverter/logger"
-)
-
-func init() {
-	defaultLogger := logger.Logger {
-		PrintLevel: 0,
-		LogLevel: 1,
-		LogFilePath: "log.log",
-		PrintSource: true,
-	}
-
-	logger.SetGlobalLogger(&defaultLogger)
-}
-
-func main() {
-	defer logger.CloseFile()
-
-
-}

pkg/logger/logger.go

@@ -10,7 +10,7 @@ import (
 	"os"
 )
 
-// define available log levels
+// Level of the log message
 type Level uint8
 const (
 	LevelDebug	Level = iota
@@ -35,7 +35,6 @@ type Logger struct {
 var dLogger Logger
 
 func init() {
-
 	dLogger = Logger {
 		PrintLevel: LevelDebug,
 		LogLevel: LevelInfo,
@@ -52,7 +51,7 @@ func (l Logger) Log(level Level, message string, parameters ...any) {
 }
 
 func (l Logger) log(level Level, message string, parameters ...any) {
-	pc, file, line, ok := runtime.Caller(2)
+	pc, file, line, ok := runtime.Caller(3)
 	if (!ok) {
 		file = "#unknown"
 		line = 0
@@ -110,6 +109,7 @@ func getSourceMessage(file string, line int, pc uintptr, l Logger) (string) {
 }
 
 func (l *Logger) setup() {
+	// log.Ldate|log.Ltime|log.Lshortfile
 	l.consoleLogger = log.New(os.Stdout, "", 0)
 	l.consoleLoggerErr = log.New(os.Stderr, "", 0)
 
@@ -131,10 +131,10 @@ func (l *Logger) setup() {
 }
 
 func (l *Logger) CloseFile() {
-	if (dLogger.logFile != nil) {
-		dLogger.logFile.Close()
-		dLogger.logFile = nil
-		dLogger.fileLogger = nil
+	if (l.logFile != nil) {
+		l.logFile.Close()
+		l.logFile = nil
+		l.fileLogger = nil
 	}
 }
 
@@ -143,6 +143,9 @@ func SetGlobalLogger(l *Logger) {
 	dLogger = *l
 	dLogger.setup()
 }
+func GetGlobalLogger() (*Logger) {
+	return &dLogger
+}
 
 func Debug(message string, parameters ...any) {
 	dLogger.Log(LevelDebug, message, parameters...)
@@ -163,3 +166,22 @@ func Fatal(message string, parameters ...any) {
 func CloseFile() {
 	dLogger.CloseFile()
 }
+
+// Tries to convert the given level name to the corresponding level code.
+// Allowed values are: 'debug', 'info', 'warn', 'warning', 'error', 'panic' and 'fatal'
+// If an incorrect level name was given an warning is logged and info will be returned
+func GetLevelByName(levelName string) Level {
+	levelName = strings.ToLower(levelName)
+	switch (levelName) {
+		case "debug": return LevelDebug
+		case "info": return LevelInfo
+		case "warn", "warning": return LevelWarning
+		case "error": return LevelError
+		case "panic", "fatal": return LevelFatal
+
+		default: {
+			Warning("Unable to parse the level name '%s'. Expected 'debug', 'info', 'warn', 'error' or 'fatal'", levelName)
+			return LevelInfo
+		}
+	}
+}

scripts/run.cmd

@@ -0,0 +1,14 @@
+@ECHO OFF
+
+:: Bypass the "Terminate Batch Job" prompt
+if "%~1"=="-FIXED_CTRL_C" (
+   :: Remove the -FIXED_CTRL_C parameter
+   SHIFT
+) ELSE (
+   :: Run the batch with <NUL and -FIXED_CTRL_C
+   CALL <NUL %0 -FIXED_CTRL_C %*
+   GOTO :EOF
+)
+
+set GOTMPDIR=C:\MYCOMP
+nodemon --delay 1s -e go,html --ignore web/app/ --exec go run ./cmd/ncDocConverth --signal SIGTERM

scripts/run.sh

@@ -0,0 +1,3 @@
+#!/bin/sh
+
+nodemon --delay 1s -e go,html --ignore web/app/ --exec go run ./cmd/ncDocConverth --signal SIGTERM

web/app/.gitignore

@@ -0,0 +1,24 @@
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+pnpm-debug.log*
+lerna-debug.log*
+
+node_modules
+dist
+dist-ssr
+*.local
+
+# Editor directories and files
+.vscode/*
+!.vscode/extensions.json
+.idea
+.DS_Store
+*.suo
+*.ntvs*
+*.njsproj
+*.sln
+*.sw?

web/app/index.html

@@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="UTF-8" />
+    <link rel="icon" type="image/svg+xml" href="/vite.svg" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>Vite + React + TS</title>
+  </head>
+  <body>
+    <div id="root"></div>
+    <script type="module" src="/src/main.tsx"></script>
+  </body>
+</html>

web/app/package.json

@@ -0,0 +1,25 @@
+{
+  "name": "vite-number-conversion",
+  "private": true,
+  "version": "0.0.0",
+  "type": "module",
+  "scripts": {
+    "dev": "vite",
+    "build": "tsc && vite build",
+    "preview": "vite preview"
+  },
+  "dependencies": {
+    "antd": "^4.23.2",
+    "axios": "^0.27.2",
+    "react": "^18.2.0",
+    "react-dom": "^18.2.0"
+  },
+  "devDependencies": {
+    "@types/react": "^18.0.17",
+    "@types/react-dom": "^18.0.6",
+    "@vitejs/plugin-react": "^2.1.0",
+    "nodemon": "^2.0.20",
+    "typescript": "^4.6.4",
+    "vite": "^3.1.0"
+  }
+}

web/app/src/App.css

@@ -0,0 +1,41 @@
+#root {
+  max-width: 1280px;
+  margin: 0 auto;
+  padding: 2rem;
+  text-align: center;
+}
+
+.logo {
+  height: 7em;
+  padding: 1.5em;
+  will-change: filter;
+}
+.logo:hover {
+  filter: drop-shadow(0 0 2em #646cffaa);
+}
+.logo.react:hover {
+  filter: drop-shadow(0 0 2em #61dafbaa);
+}
+
+@keyframes logo-spin {
+  from {
+    transform: rotate(0deg);
+  }
+  to {
+    transform: rotate(360deg);
+  }
+}
+
+@media (prefers-reduced-motion: no-preference) {
+  a:nth-of-type(2) .logo {
+    animation: logo-spin infinite 20s linear;
+  }
+}
+
+.card {
+  padding: 2em;
+}
+
+.read-the-docs {
+  color: #888;
+}

web/app/src/App.tsx

@@ -0,0 +1,36 @@
+import { useState } from 'react'
+import reactLogo from './assets/react.svg'
+import viteLogo from './assets/vite.svg'
+import './App.css'
+
+function App() {
+  const [count, setCount] = useState(0)
+
+  const hi: string = "Servus"
+  return (
+    <div className="App">
+      <div>
+        <a href="https://vitejs.dev" target="_blank">
+          <img src={viteLogo} className="logo" alt="Vite logo" />
+        </a>
+        <a href="https://reactjs.org" target="_blank">
+          <img src={reactLogo} className="logo react" alt="React logo" />
+        </a>
+      </div>
+      <h1>Vite + React</h1>
+      <div className="card">
+        <button onClick={() => setCount((count) => count + 1)}>
+          count is {count}
+        </button>
+        <p>
+          Edit <code>src/App.tsx</code> and save to test HMR
+        </p>
+      </div>
+      <p className="read-the-docs">
+        Click on the Vite and React logos to learn more
+      </p>
+    </div>
+  )
+}
+
+export default App

web/app/src/Sep.css

@@ -0,0 +1,3 @@
+#HELLOIHRBOYSDA {
+    background-color: aliceblue;
+}

web/app/src/Sep.tsx

@@ -0,0 +1,12 @@
+import React from 'react'
+import ReactDOM from 'react-dom/client'
+import App from './App'
+import './Sep.css'
+
+ReactDOM.createRoot(document.getElementById('root') as HTMLElement).render(
+  <React.StrictMode>
+    <div id="HELLOIHRBOYSDA">
+      
+    </div>
+  </React.StrictMode>
+)

web/app/src/assets/react.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" aria-hidden="true" role="img" class="iconify iconify--logos" width="35.93" height="32" preserveAspectRatio="xMidYMid meet" viewBox="0 0 256 228"><path fill="#00D8FF" d="M210.483 73.824a171.49 171.49 0 0 0-8.24-2.597c.465-1.9.893-3.777 1.273-5.621c6.238-30.281 2.16-54.676-11.769-62.708c-13.355-7.7-35.196.329-57.254 19.526a171.23 171.23 0 0 0-6.375 5.848a155.866 155.866 0 0 0-4.241-3.917C100.759 3.829 77.587-4.822 63.673 3.233C50.33 10.957 46.379 33.89 51.995 62.588a170.974 170.974 0 0 0 1.892 8.48c-3.28.932-6.445 1.924-9.474 2.98C17.309 83.498 0 98.307 0 113.668c0 15.865 18.582 31.778 46.812 41.427a145.52 145.52 0 0 0 6.921 2.165a167.467 167.467 0 0 0-2.01 9.138c-5.354 28.2-1.173 50.591 12.134 58.266c13.744 7.926 36.812-.22 59.273-19.855a145.567 145.567 0 0 0 5.342-4.923a168.064 168.064 0 0 0 6.92 6.314c21.758 18.722 43.246 26.282 56.54 18.586c13.731-7.949 18.194-32.003 12.4-61.268a145.016 145.016 0 0 0-1.535-6.842c1.62-.48 3.21-.974 4.76-1.488c29.348-9.723 48.443-25.443 48.443-41.52c0-15.417-17.868-30.326-45.517-39.844Zm-6.365 70.984c-1.4.463-2.836.91-4.3 1.345c-3.24-10.257-7.612-21.163-12.963-32.432c5.106-11 9.31-21.767 12.459-31.957c2.619.758 5.16 1.557 7.61 2.4c23.69 8.156 38.14 20.213 38.14 29.504c0 9.896-15.606 22.743-40.946 31.14Zm-10.514 20.834c2.562 12.94 2.927 24.64 1.23 33.787c-1.524 8.219-4.59 13.698-8.382 15.893c-8.067 4.67-25.32-1.4-43.927-17.412a156.726 156.726 0 0 1-6.437-5.87c7.214-7.889 14.423-17.06 21.459-27.246c12.376-1.098 24.068-2.894 34.671-5.345a134.17 134.17 0 0 1 1.386 6.193ZM87.276 214.515c-7.882 2.783-14.16 2.863-17.955.675c-8.075-4.657-11.432-22.636-6.853-46.752a156.923 156.923 0 0 1 1.869-8.499c10.486 2.32 22.093 3.988 34.498 4.994c7.084 9.967 14.501 19.128 21.976 27.15a134.668 134.668 0 0 1-4.877 4.492c-9.933 8.682-19.886 14.842-28.658 17.94ZM50.35 144.747c-12.483-4.267-22.792-9.812-29.858-15.863c-6.35-5.437-9.555-10.836-9.555-15.216c0-9.322 13.897-21.212 37.076-29.293c2.813-.98 5.757-1.905 8.812-2.773c3.204 10.42 7.406 21.315 12.477 32.332c-5.137 11.18-9.399 22.249-12.634 32.792a134.718 134.718 0 0 1-6.318-1.979Zm12.378-84.26c-4.811-24.587-1.616-43.134 6.425-47.789c8.564-4.958 27.502 2.111 47.463 19.835a144.318 144.318 0 0 1 3.841 3.545c-7.438 7.987-14.787 17.08-21.808 26.988c-12.04 1.116-23.565 2.908-34.161 5.309a160.342 160.342 0 0 1-1.76-7.887Zm110.427 27.268a347.8 347.8 0 0 0-7.785-12.803c8.168 1.033 15.994 2.404 23.343 4.08c-2.206 7.072-4.956 14.465-8.193 22.045a381.151 381.151 0 0 0-7.365-13.322Zm-45.032-43.861c5.044 5.465 10.096 11.566 15.065 18.186a322.04 322.04 0 0 0-30.257-.006c4.974-6.559 10.069-12.652 15.192-18.18ZM82.802 87.83a323.167 323.167 0 0 0-7.227 13.238c-3.184-7.553-5.909-14.98-8.134-22.152c7.304-1.634 15.093-2.97 23.209-3.984a321.524 321.524 0 0 0-7.848 12.897Zm8.081 65.352c-8.385-.936-16.291-2.203-23.593-3.793c2.26-7.3 5.045-14.885 8.298-22.6a321.187 321.187 0 0 0 7.257 13.246c2.594 4.48 5.28 8.868 8.038 13.147Zm37.542 31.03c-5.184-5.592-10.354-11.779-15.403-18.433c4.902.192 9.899.29 14.978.29c5.218 0 10.376-.117 15.453-.343c-4.985 6.774-10.018 12.97-15.028 18.486Zm52.198-57.817c3.422 7.8 6.306 15.345 8.596 22.52c-7.422 1.694-15.436 3.058-23.88 4.071a382.417 382.417 0 0 0 7.859-13.026a347.403 347.403 0 0 0 7.425-13.565Zm-16.898 8.101a358.557 358.557 0 0 1-12.281 19.815a329.4 329.4 0 0 1-23.444.823c-7.967 0-15.716-.248-23.178-.732a310.202 310.202 0 0 1-12.513-19.846h.001a307.41 307.41 0 0 1-10.923-20.627a310.278 310.278 0 0 1 10.89-20.637l-.001.001a307.318 307.318 0 0 1 12.413-19.761c7.613-.576 15.42-.876 23.31-.876H128c7.926 0 15.743.303 23.354.883a329.357 329.357 0 0 1 12.335 19.695a358.489 358.489 0 0 1 11.036 20.54a329.472 329.472 0 0 1-11 20.722Zm22.56-122.124c8.572 4.944 11.906 24.881 6.52 51.026c-.344 1.668-.73 3.367-1.15 5.09c-10.622-2.452-22.155-4.275-34.23-5.408c-7.034-10.017-14.323-19.124-21.64-27.008a160.789 160.789 0 0 1 5.888-5.4c18.9-16.447 36.564-22.941 44.612-18.3ZM128 90.808c12.625 0 22.86 10.235 22.86 22.86s-10.235 22.86-22.86 22.86s-22.86-10.235-22.86-22.86s10.235-22.86 22.86-22.86Z"></path></svg>

web/app/src/assets/vite.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" aria-hidden="true" role="img" class="iconify iconify--logos" width="31.88" height="32" preserveAspectRatio="xMidYMid meet" viewBox="0 0 256 257"><defs><linearGradient id="IconifyId1813088fe1fbc01fb466" x1="-.828%" x2="57.636%" y1="7.652%" y2="78.411%"><stop offset="0%" stop-color="#41D1FF"></stop><stop offset="100%" stop-color="#BD34FE"></stop></linearGradient><linearGradient id="IconifyId1813088fe1fbc01fb467" x1="43.376%" x2="50.316%" y1="2.242%" y2="89.03%"><stop offset="0%" stop-color="#FFEA83"></stop><stop offset="8.333%" stop-color="#FFDD35"></stop><stop offset="100%" stop-color="#FFA800"></stop></linearGradient></defs><path fill="url(#IconifyId1813088fe1fbc01fb466)" d="M255.153 37.938L134.897 252.976c-2.483 4.44-8.862 4.466-11.382.048L.875 37.958c-2.746-4.814 1.371-10.646 6.827-9.67l120.385 21.517a6.537 6.537 0 0 0 2.322-.004l117.867-21.483c5.438-.991 9.574 4.796 6.877 9.62Z"></path><path fill="url(#IconifyId1813088fe1fbc01fb467)" d="M185.432.063L96.44 17.501a3.268 3.268 0 0 0-2.634 3.014l-5.474 92.456a3.268 3.268 0 0 0 3.997 3.378l24.777-5.718c2.318-.535 4.413 1.507 3.936 3.838l-7.361 36.047c-.495 2.426 1.782 4.5 4.151 3.78l15.304-4.649c2.372-.72 4.652 1.36 4.15 3.788l-11.698 56.621c-.732 3.542 3.979 5.473 5.943 2.437l1.313-2.028l72.516-144.72c1.215-2.423-.88-5.186-3.54-4.672l-25.505 4.922c-2.396.462-4.435-1.77-3.759-4.114l16.646-57.705c.677-2.35-1.37-4.583-3.769-4.113Z"></path></svg>

web/app/src/index.css

@@ -0,0 +1,70 @@
+:root {
+  font-family: Inter, Avenir, Helvetica, Arial, sans-serif;
+  font-size: 16px;
+  line-height: 24px;
+  font-weight: 400;
+
+  color-scheme: light dark;
+  color: rgba(255, 255, 255, 0.87);
+  background-color: #242424;
+
+  font-synthesis: none;
+  text-rendering: optimizeLegibility;
+  -webkit-font-smoothing: antialiased;
+  -moz-osx-font-smoothing: grayscale;
+  -webkit-text-size-adjust: 100%;
+}
+
+a {
+  font-weight: 500;
+  color: #646cff;
+  text-decoration: inherit;
+}
+a:hover {
+  color: #535bf2;
+}
+
+body {
+  margin: 0;
+  display: flex;
+  place-items: center;
+  min-width: 320px;
+  min-height: 100vh;
+}
+
+h1 {
+  font-size: 3.2em;
+  line-height: 1.1;
+}
+
+button {
+  border-radius: 8px;
+  border: 1px solid transparent;
+  padding: 0.6em 1.2em;
+  font-size: 1em;
+  font-weight: 500;
+  font-family: inherit;
+  background-color: #1a1a1a;
+  cursor: pointer;
+  transition: border-color 0.25s;
+}
+button:hover {
+  border-color: #646cff;
+}
+button:focus,
+button:focus-visible {
+  outline: 4px auto -webkit-focus-ring-color;
+}
+
+@media (prefers-color-scheme: light) {
+  :root {
+    color: #213547;
+    background-color: #ffffff;
+  }
+  a:hover {
+    color: #747bff;
+  }
+  button {
+    background-color: #f9f9f9;
+  }
+}

web/app/src/main.tsx

@@ -0,0 +1,10 @@
+import React from 'react'
+import ReactDOM from 'react-dom/client'
+import App from './App'
+import './index.css'
+
+ReactDOM.createRoot(document.getElementById('root') as HTMLElement).render(
+  <React.StrictMode>
+    <App />
+  </React.StrictMode>
+)

web/app/src/vite-env.d.ts

@@ -0,0 +1 @@
+/// <reference types="vite/client" />

web/app/tsconfig.json

@@ -0,0 +1,21 @@
+{
+  "compilerOptions": {
+    "target": "ESNext",
+    "useDefineForClassFields": true,
+    "lib": ["DOM", "DOM.Iterable", "ESNext"],
+    "allowJs": false,
+    "skipLibCheck": true,
+    "esModuleInterop": false,
+    "allowSyntheticDefaultImports": true,
+    "strict": true,
+    "forceConsistentCasingInFileNames": true,
+    "module": "ESNext",
+    "moduleResolution": "Node",
+    "resolveJsonModule": true,
+    "isolatedModules": true,
+    "noEmit": true,
+    "jsx": "react-jsx"
+  },
+  "include": ["src"],
+  "references": [{ "path": "./tsconfig.node.json" }]
+}

web/app/tsconfig.node.json

@@ -0,0 +1,9 @@
+{
+  "compilerOptions": {
+    "composite": true,
+    "module": "ESNext",
+    "moduleResolution": "Node",
+    "allowSyntheticDefaultImports": true
+  },
+  "include": ["vite.config.ts"]
+}

web/app/vite.config.ts

@@ -0,0 +1,20 @@
+import { defineConfig } from 'vite'
+import react from '@vitejs/plugin-react'
+
+// https://vitejs.dev/config/
+export default defineConfig({
+  plugins: [react()],
+  build: {
+    rollupOptions: {
+      output: {
+        entryFileNames: `assets/[name].js`,
+        chunkFileNames: `assets/[name].js`,
+        assetFileNames: `assets/[name].[ext]`
+      },
+      input: {
+        main: "src/main.tsx",
+        sep: "src/Sep.tsx",
+      },
+    }
+  }
+})

web/efs.go

@@ -0,0 +1,14 @@
+package web
+
+import (
+    "embed"
+)
+
+//go:embed "app/dist"
+var FrontendFiles embed.FS
+
+//go:embed "app/src"
+var DevelopeFiles embed.FS
+
+//go:embed "template"
+var TemplateFiles embed.FS

web/template/base.tmpl.html

@@ -0,0 +1,16 @@
+{{define "base"}}
+<!doctype html>
+<html lang='de'>
+    <head>
+        <meta charset='utf-8'>
+        <title>Vite + React + Go</title>
+        <!-- <base href="http://localhost:5173" > -->
+        {{if not .ServerConfig.Development}}
+            <script type="module" src='{{ getJSFile "jsx-runtime"}}'></script>
+        {{end}}
+    </head>
+    <body>
+        {{template "main" .}}
+    </body>
+</html>
+{{end}}

web/template/pages/main.tmpl.html

@@ -0,0 +1,12 @@
+{{define "main"}}
+  <div id="root"></div>
+
+  {{template "vitejs" .}}
+  
+  <script type="module" src='{{ getJSFile "main"}}'></script>
+  {{if not .ServerConfig.Development}}
+    <link rel="stylesheet" href="assets/main.css">
+  {{end}}
+  
+  
+{{end}}

web/template/vitejs.tmpl.html

@@ -0,0 +1,11 @@
+{{define "vitejs"}}
+  {{if .ServerConfig.Development}}
+    <script type="module">
+      import RefreshRuntime from "{{.ServerConfig.SourceServer}}@react-refresh"
+      RefreshRuntime.injectIntoGlobalHook(window)
+      window.$RefreshReg$ = () => {}
+      window.$RefreshSig$ = () => (type) => type
+      window.__vite_plugin_react_preamble_installed__ = true
+    </script>
+  {{end}}
+{{end}}