package config

import (
	"fmt"
	"log"

	"gorm.io/driver/mysql"
	"gorm.io/gorm"
	"github.com/gouki/lunar-server/internal/model"
)

var DB *gorm.DB

// InitDB 初始化数据库连接
func InitDB(cfg *Config) error {
	dsn := fmt.Sprintf("%s:%s@tcp(%s:%s)/%s?charset=utf8mb4&parseTime=True&loc=Local",
		cfg.Database.User,
		cfg.Database.Password,
		cfg.Database.Host,
		cfg.Database.Port,
		cfg.Database.Name,
	)

	var err error
	DB, err = gorm.Open(mysql.Open(dsn), &gorm.Config{})
	if err != nil {
		return fmt.Errorf("failed to connect database: %w", err)
	}

	// 自动迁移
	if err := autoMigrate(); err != nil {
		return fmt.Errorf("failed to migrate database: %w", err)
	}

	log.Println("Database connected and migrated successfully")
	return nil
}

// autoMigrate 自动迁移数据库表
func autoMigrate() error {
	return DB.AutoMigrate(
		&model.User{},
		&model.UserProfile{},
		&model.Order{},
		&model.OrderItem{},
		&model.WishTree{},
		&model.Wish{},
		&model.WishProduct{},
	)
}

// GetDB 获取数据库连接
func GetDB() *gorm.DB {
	return DB
}