// backend\server.go
package main

import (
	"context"
	"fmt"
	"net/http"
	"os"
	"os/signal"
	"sync"
	"syscall"
	"time"
)

// --- main ---
func main() {
	loadSettings()

	fixKeepRootFilesIntoModelSubdirs()

	postWorkQ.StartWorkers(2)
	enrichQ.StartWorkers(1)
	startPostWorkStatusRefresher()
	startEnrichStatusRefresher()

	go startGeneratedGarbageCollector()

	if err := initNSFWDetector(); err != nil {
		fmt.Println("❌ NSFW-ONNX Fehler:", err)
		os.Exit(1)
	}

	var closeNSFWOnce sync.Once
	closeNSFW := func() {
		closeNSFWOnce.Do(func() {
			_ = closeNSFWDetector()
		})
	}
	defer closeNSFW()

	mux := http.NewServeMux()

	auth, err := NewAuthManager()
	if err != nil {
		fmt.Println("❌ auth init:", err)
		closeNSFW()
		os.Exit(1)
	}

	store := registerRoutes(mux, auth)
	setChaturbateOnlineModelStore(store)

	if err := clearAllPendingAutoStartOnStartup(); err != nil {
		fmt.Println("⚠️ [pending-autostart] startup clear failed:", err)
	}

	// Hintergrund-Worker
	go startChaturbateOnlinePoller(store)
	go startChaturbateAutoStartWorker(store)
	go startMyFreeCamsAutoStartWorker(store)
	go startDiskSpaceGuard()

	// optional: Bootstrap nur im Hintergrund
	if getSettings().UseChaturbateAPI {
		go func() {
			ctx, cancel := context.WithTimeout(context.Background(), 20*time.Second)
			defer cancel()

			if _, err := refreshChaturbateSnapshotNow(ctx); err != nil {
				fmt.Println("⚠️ [chaturbate] startup snapshot failed:", err)
			} else {
				fmt.Println("✅ [chaturbate] startup snapshot loaded")
			}
		}()
	}

	if _, err := ensureCoversDir(); err != nil {
		fmt.Println("⚠️ covers dir:", err)
	}

	fmt.Println("🌐 HTTP-API aktiv: http://localhost:9999")

	handler := withCORS(mux)
	srv := &http.Server{
		Addr:    ":9999",
		Handler: handler,
	}

	stopSig := make(chan os.Signal, 1)
	signal.Notify(stopSig, os.Interrupt, syscall.SIGTERM)

	go func() {
		<-stopSig
		fmt.Println("🛑 Beende Server...")

		ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
		defer cancel()

		_ = srv.Shutdown(ctx)
		closeNSFW()
	}()

	if err := srv.ListenAndServe(); err != nil && err != http.ErrServerClosed {
		fmt.Println("❌ HTTP-Server Fehler:", err)
		closeNSFW()
		os.Exit(1)
	}

	closeNSFW()
}