package main

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

	"gitlab.global.bsf.tools/esv/bsf/bsf-integration/orchard/orchard-mvp/internal/api"
	"gitlab.global.bsf.tools/esv/bsf/bsf-integration/orchard/orchard-mvp/internal/config"
	"gitlab.global.bsf.tools/esv/bsf/bsf-integration/orchard/orchard-mvp/internal/storage"
	"go.uber.org/zap"
)

func main() {
	// Initialize logger
	logger, err := zap.NewProduction()
	if err != nil {
		fmt.Fprintf(os.Stderr, "failed to create logger: %v\n", err)
		os.Exit(1)
	}
	defer logger.Sync()

	// Load configuration
	cfg, err := config.Load()
	if err != nil {
		logger.Fatal("failed to load configuration", zap.Error(err))
	}

	// Initialize database
	db, err := storage.NewDatabase(&cfg.Database)
	if err != nil {
		logger.Fatal("failed to connect to database", zap.Error(err))
	}
	defer db.Close()

	// Initialize S3 storage
	s3, err := storage.NewS3Storage(&cfg.S3)
	if err != nil {
		logger.Fatal("failed to initialize S3 storage", zap.Error(err))
	}

	// Setup router
	router := api.SetupRouter(db, s3, logger)

	// Create HTTP server
	addr := fmt.Sprintf("%s:%d", cfg.Server.Host, cfg.Server.Port)
	srv := &http.Server{
		Addr:         addr,
		Handler:      router,
		ReadTimeout:  30 * time.Second,
		WriteTimeout: 30 * time.Second,
		IdleTimeout:  60 * time.Second,
	}

	// Start server in goroutine
	go func() {
		logger.Info("starting Orchard server",
			zap.String("address", addr),
		)
		if err := srv.ListenAndServe(); err != nil && err != http.ErrServerClosed {
			logger.Fatal("server failed", zap.Error(err))
		}
	}()

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

	logger.Info("shutting down server...")

	// Graceful shutdown with timeout
	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
	defer cancel()

	if err := srv.Shutdown(ctx); err != nil {
		logger.Fatal("server forced to shutdown", zap.Error(err))
	}

	logger.Info("server stopped")
}