// Command server 是 portal-mini-go 的统一服务入口，
// 承载 10 个小程序与后台管理。
package main

import (
	"log/slog"
	"os"
	"strconv"
	"time"

	"gorm.io/driver/mysql"
	"gorm.io/gorm"

	"portal-mini-go/internal/pkg/config"
	"portal-mini-go/internal/pkg/session"
	"portal-mini-go/internal/router"
)

func main() {
	cfg, err := config.Load("")
	if err != nil {
		slog.Error("load config", slog.Any("err", err))
		os.Exit(1)
	}
	setupLogger(cfg.Logging)

	db, err := gorm.Open(mysql.Open(cfg.MySQL.DSN()), &gorm.Config{})
	if err != nil {
		slog.Error("open db", slog.Any("err", err))
		os.Exit(1)
	}

	sqlDB, err := db.DB()
	if err != nil {
		slog.Error("get sql.DB", slog.Any("err", err))
		os.Exit(1)
	}
	sqlDB.SetMaxIdleConns(cfg.MySQL.MaxIdleConns)
	sqlDB.SetMaxOpenConns(cfg.MySQL.MaxOpenConns)
	sqlDB.SetConnMaxLifetime(time.Duration(cfg.MySQL.ConnMaxLifetime) * time.Second)

	store := session.NewMemoryStore()

	r := router.New(cfg, db, store)

	addr := ":" + strconv.Itoa(cfg.Server.Port)
	slog.Info("server starting", slog.String("addr", addr))
	if err := r.Run(addr); err != nil {
		slog.Error("server run", slog.Any("err", err))
		os.Exit(1)
	}
}

func setupLogger(lc config.LoggingConfig) {
	var level slog.Level
	switch lc.Level {
	case "info":
		level = slog.LevelInfo
	case "warn":
		level = slog.LevelWarn
	case "error":
		level = slog.LevelError
	default:
		level = slog.LevelDebug
	}

	var handler slog.Handler
	opts := &slog.HandlerOptions{Level: level}
	if lc.Format == "json" {
		handler = slog.NewJSONHandler(os.Stdout, opts)
	} else {
		handler = slog.NewTextHandler(os.Stdout, opts)
	}
	slog.SetDefault(slog.New(handler))
}