package main

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

	_ "pay-bridge/internal/channel/heepay" // 注册 HEEPay 渠道适配器

	"pay-bridge/internal/api"
	"pay-bridge/internal/app"
	"pay-bridge/pkg/config"
	"pay-bridge/pkg/logger"
)

func main() {
	cfgFile := flag.String("config", "", "config file path (default: configs/config.local.yaml)")
	flag.Parse()

	cfg, err := config.Load(*cfgFile)
	if err != nil {
		fmt.Fprintf(os.Stderr, "load config failed: %v\n", err)
		os.Exit(1)
	}

	logger.Init(cfg.Log.Level, cfg.Log.Format)

	application, err := app.New(cfg)
	if err != nil {
		slog.Error("init application failed", "err", err)
		os.Exit(1)
	}

	ctx, cancel := signal.NotifyContext(context.Background(), syscall.SIGINT, syscall.SIGTERM)
	defer cancel()

	application.Start(ctx)

	srv := &http.Server{
		Addr:         fmt.Sprintf(":%d", cfg.Server.Port),
		Handler:      api.SetupRouter(application),
		ReadTimeout:  cfg.Server.ReadTimeout,
		WriteTimeout: cfg.Server.WriteTimeout,
	}

	go func() {
		slog.Info("pay-bridge server started", "port", cfg.Server.Port)
		if err := srv.ListenAndServe(); err != nil && err != http.ErrServerClosed {
			slog.Error("server error", "err", err)
			os.Exit(1)
		}
	}()

	<-ctx.Done()
	slog.Info("shutting down server...")

	shutdownCtx, shutdownCancel := context.WithTimeout(context.Background(), 10*time.Second)
	defer shutdownCancel()

	if err := srv.Shutdown(shutdownCtx); err != nil {
		slog.Error("server shutdown error", "err", err)
	}

	application.Shutdown(shutdownCtx)
	slog.Info("server exited")
}