package main

import (
	"context"
	"log"
	"net/http"
	"os"
	"os/signal"
	"syscall"
	"time"

	"github.com/mattnite/cairn/internal/blob"
	"github.com/mattnite/cairn/internal/config"
	"github.com/mattnite/cairn/internal/database"
	"github.com/mattnite/cairn/internal/forgejo"
	"github.com/mattnite/cairn/internal/web"
)

func main() {
	cfg, err := config.Load()
	if err != nil {
		log.Fatalf("Loading config: %v", err)
	}

	ctx, cancel := context.WithCancel(context.Background())
	defer cancel()

	pool, err := database.Connect(ctx, cfg.DatabaseURL)
	if err != nil {
		log.Fatalf("Connecting to database: %v", err)
	}
	defer pool.Close()

	if err := database.Migrate(ctx, pool); err != nil {
		log.Fatalf("Running migrations: %v", err)
	}

	store, err := blob.NewS3Store(cfg.S3Endpoint, cfg.S3AccessKey, cfg.S3SecretKey, cfg.S3Bucket, cfg.S3UseSSL)
	if err != nil {
		log.Fatalf("Creating blob store: %v", err)
	}

	if err := store.EnsureBucket(ctx); err != nil {
		log.Fatalf("Ensuring bucket: %v", err)
	}

	var forgejoClient *forgejo.Client
	if cfg.ForgejoURL != "" && cfg.ForgejoToken != "" {
		forgejoClient = forgejo.NewClient(cfg.ForgejoURL, cfg.ForgejoToken)
		log.Printf("Forgejo integration enabled: %s", cfg.ForgejoURL)
	}

	router, err := web.NewRouter(web.RouterConfig{
		Pool:          pool,
		Store:         store,
		ForgejoClient: forgejoClient,
		WebhookSecret: cfg.ForgejoWebhookSecret,
	})
	if err != nil {
		log.Fatalf("Creating router: %v", err)
	}

	srv := &http.Server{
		Addr:         cfg.ListenAddr,
		Handler:      router,
		ReadTimeout:  30 * time.Second,
		WriteTimeout: 60 * time.Second,
		IdleTimeout:  120 * time.Second,
	}

	go func() {
		sigCh := make(chan os.Signal, 1)
		signal.Notify(sigCh, syscall.SIGINT, syscall.SIGTERM)
		<-sigCh
		log.Println("Shutting down...")
		shutdownCtx, shutdownCancel := context.WithTimeout(context.Background(), 10*time.Second)
		defer shutdownCancel()
		if err := srv.Shutdown(shutdownCtx); err != nil {
			log.Printf("Shutdown error: %v", err)
		}
	}()

	log.Printf("Cairn server listening on %s", cfg.ListenAddr)
	if err := srv.ListenAndServe(); err != http.ErrServerClosed {
		log.Fatalf("Server error: %v", err)
	}
}