package main

import (
	"antrian-operasi/internal/server"
	"context"
	"fmt"
	"log"
	"net/http"
	"os/signal"
	"syscall"
	"time"

	_ "antrian-operasi/docs"

	"github.com/joho/godotenv"
)

func gracefulShutdown(apiServer *http.Server, done chan bool) {
	ctx, stop := signal.NotifyContext(context.Background(), syscall.SIGINT, syscall.SIGTERM)
	defer stop()

	<-ctx.Done()

	log.Println("Shutting down gracefully, press Ctrl+C again to force")
	stop()

	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
	defer cancel()
	if err := apiServer.Shutdown(ctx); err != nil {
		log.Printf("Server forced to shutdown with error: %v", err)
	}

	log.Println("Server exiting")

	done <- true
}

// @title           Antrian Operasi API
// @version         1.0
// @description     Dokumentasi API Antrian Operasi
// @host            localhost:8080
// @BasePath        /api

// @securityDefinitions.apikey BearerAuth
// @in header
// @name Authorization

// @security BearerAuth
func main() {
	log.Println("Starting API Service...")

	if err := godotenv.Load(); err != nil {
		log.Printf("Warning: .env file not found or could not be loaded: %v", err)
		log.Println("Continuing with system environment variables...")
	}

	server := server.NewServer()

	done := make(chan bool, 1)

	// Run graceful shutdown in a separate goroutine
	go gracefulShutdown(server, done)

	log.Printf("Server starting on port %s", server.Addr)
	err := server.ListenAndServe()
	if err != nil && err != http.ErrServerClosed {
		panic(fmt.Sprintf("http server error: %s", err))
	}

	// Wait for the graceful shutdown to complete
	<-done
	log.Println("Graceful shutdown complete.")
}