add golang backend for login an d webserver

backend/main.go

@@ -0,0 +1,89 @@
+package main
+
+import (
+	"backend/login"
+	"backend/server"
+	"backend/utils"
+	"flag"
+	"fmt"
+	"log"
+	"os"
+	"path/filepath"
+	"time"
+
+	"github.com/gin-gonic/gin"
+	"github.com/tecamino/tecamino-logger/logging"
+)
+
+func main() {
+	spa := flag.String("spa", "./dist/spa", "quasar spa files")
+	workingDir := flag.String("workingDirectory", ".", "quasar spa files")
+	ip := flag.String("ip", "0.0.0.0", "server listening ip")
+	port := flag.Uint("port", 9500, "server listening port")
+	debug := flag.Bool("debug", false, "log debug")
+	flag.Parse()
+
+	//change working directory only if value is given
+	if *workingDir != "." && *workingDir != "" {
+		fmt.Println(1, *workingDir)
+		os.Chdir(*workingDir)
+	}
+	fmt.Println(1.1, *workingDir)
+	wd, err := os.Getwd()
+	if err != nil {
+		log.Fatalf("Could not get working directory: %v", err)
+	}
+
+	folderName := filepath.Base(wd)
+	logFileName := folderName + ".log"
+
+	logger, err := logging.NewLogger(logFileName, &logging.Config{
+		MaxSize:     1,
+		MaxBackup:   3,
+		MaxAge:      28,
+		Debug:       *debug,
+		TerminalOut: true,
+	})
+
+	//new login manager
+	loginManager, err := login.NewLoginManager(".")
+	if err != nil {
+		logger.Error("main login manager", err.Error())
+		panic(err)
+	}
+
+	// new server
+	s := server.NewServer()
+
+	api := s.Routes.Group("/api")
+	//set routes
+	api.POST("/login", loginManager.Login)
+	api.POST("/user/add", loginManager.AddUser)
+	api.DELETE("/user", loginManager.RemoveUser)
+
+	// Serve static files
+	s.Routes.StaticFS("/", gin.Dir(*spa, true))
+	s.Routes.NoRoute(func(c *gin.Context) {
+		// Try to serve file from SPA directory
+		filePath := filepath.Join(*spa, c.Request.URL.Path)
+		if _, err := os.Stat(filePath); err == nil {
+			c.File(filePath)
+		} else {
+			// Fallback to index.html for SPA routing
+			c.File(filepath.Join(*spa, "index.html"))
+		}
+	})
+
+	go func() {
+		time.Sleep(500 * time.Millisecond)
+		if err := utils.OpenBrowser(fmt.Sprintf("http://localhost:%d", *port), logger); err != nil {
+			logger.Error("main", fmt.Sprintf("starting browser error : %s", err.Error()))
+		}
+	}()
+	fmt.Println(3, *ip, *port)
+	// start http server
+	logger.Info("main", fmt.Sprintf("http listen on ip: %s port: %d", *ip, *port))
+	if err := s.ServeHttp(*ip, *port); err != nil {
+		logger.Error("main", "error http server "+err.Error())
+	}
+}