package main

import (
	"flag"
	"fmt"
	"net/http"
	"os"
	"os/signal"
	"super-frpc/config"
	"super-frpc/database"
	"super-frpc/frpLogger"
	"super-frpc/global"
	"super-frpc/handlers"
	"super-frpc/postLog"
	"super-frpc/session"
	"super-frpc/service"
	"super-frpc/watchdog"
	"syscall"
	"time"
)

func main() {
	postLog.Info(fmt.Sprintf("%s %s (Build %d.%s) by %s", global.Software.Name, global.Software.Version, global.Software.BuildVer, global.Software.BuildType, global.Software.Developer))
	configPath := flag.String("config", "./config.json", "path to config file")
	dbPath_data := flag.String("db", "./database.db", "path to database file")
	dbPath_log := flag.String("log", "./logs.db", "path to logs database file")
	flag.Parse()

	if _, err := os.Stat(*configPath); os.IsNotExist(err) {
		defaultConfig := `{
	"listenAddr": "0.0.0.0",
	"listenPort": "8080",
	"configDir": "./configs"
}`
		if err := os.WriteFile(*configPath, []byte(defaultConfig), 0644); err != nil {
			postLog.Warning(fmt.Sprintf("Failed to create default config file: %v", err))
		}
		postLog.Info(fmt.Sprintf("Created default config file at %s", *configPath))
	}

	cfg, err := config.LoadConfig(*configPath, service.GetInitSystem)
	if err != nil {
		postLog.Fatal(fmt.Sprintf("Failed to load config: %v", err))
	}

	postLog.SetDebugMode(cfg.Debug)
	global.Is.Debug = cfg.Debug

	if err := postLog.InitLogsDatabase(*dbPath_log); err != nil {
		postLog.Fatal(fmt.Sprintf("Failed to initialize logs database: %v", err))
	}
	postLog.Info("Logs database initialized successfully")

	if err := database.InitDatabase(*dbPath_data, *dbPath_log); err != nil {
		postLog.Fatal(fmt.Sprintf("Failed to initialize database: %v", err))
	}
	postLog.Info("Database initialized successfully")

	if err := database.InitFrpcDatabase(*dbPath_data); err != nil {
		postLog.Fatal(fmt.Sprintf("Failed to initialize frpc database: %v", err))
	}

	frpLogger.SetDatabase(global.ConfigDB, global.FrpcDB)
	frpLogger.SetDebugMode(cfg.Debug)

	_, err = config.GetConfig()
	if err != nil {
		postLog.Fatal(fmt.Sprintf("Failed to get config: %v", err))
	}

	postLog.InitLogBroadcaster()

	setupRoutes()

	err = watchdog.Init()
	if err != nil {
		postLog.Error(fmt.Sprintf("Unable to initialize Watchdog: %s", err))
	} else {
		if !watchdog.Connect("127.0.0.1", cfg.Watchdog.Port) {
			postLog.Error(fmt.Sprintf("Failed to connect to Watchdog at %s:%d", "127.0.0.1", cfg.Watchdog.Port))
		} else {
			postLog.Info(fmt.Sprintf("Connected to Watchdog at %s:%d", "127.0.0.1", cfg.Watchdog.Port))
			global.Is.WatchdogConnected = true
		}
	}

	addr := fmt.Sprintf("%s:%s", cfg.ListenAddr, cfg.ListenPort)
	server := &http.Server{
		Addr:         addr,
		ReadTimeout:  15 * time.Second,
		WriteTimeout: 15 * time.Second,
		IdleTimeout:  60 * time.Second,
	}

	go func() {
		postLog.Info(fmt.Sprintf("Server starting on %s", addr))
		global.Is.Online = true
		if err := server.ListenAndServe(); err != nil && err != http.ErrServerClosed {
			postLog.Fatal(fmt.Sprintf("Failed to start server: %v", err))
		}
	}()

	go func() {
		ticker := time.NewTicker(1 * time.Hour)
		defer ticker.Stop()
		for range ticker.C {
			session.CleanupExpiredTokens()
			session.CleanupExpiredSessions()
		}
	}()

	quit := make(chan os.Signal, 1)
	signal.Notify(quit, syscall.SIGINT, syscall.SIGTERM)
	<-quit

	postLog.Info("Shutting down server...")

	if err := server.Close(); err != nil {
		postLog.Error(fmt.Sprintf("Server closed with error: %v", err))
	}

	if err := database.CloseDatabase(); err != nil {
		postLog.Error(fmt.Sprintf("Error closing database: %v", err))
	}

	watchdog.Close()

	postLog.Info("Server stopped")
}

func GetStatusHandler(w http.ResponseWriter, r *http.Request) {
	statusInfo := map[string]string{
		"ServerStatus":   "Offline",
		"WatchdogStatus": "Offline",
	}
	if global.Is.Online {
		statusInfo["ServerStatus"] = "Online"
	}
	if global.Is.WatchdogConnected {
		statusInfo["WatchdogStatus"] = "Online"
	}
	handlers.SendSuccessResponse(w, "getStatus", statusInfo)
}

func GetSoftwareInfoHandler(w http.ResponseWriter, r *http.Request) {
	handlers.SendSuccessResponse(w, "getSoftwareInfo", global.Software)
}