package database

import (
	"log"
	"os"
	"psi/config"
	"psi/models"
	"psi/utils"
	"time"

	"gorm.io/driver/mysql"
	"gorm.io/gorm"
	"gorm.io/gorm/logger"
)

var DB *gorm.DB

func Init() {
	cfg := config.AppConfig

	var err error
	// 使用MySQL驱动连接数据库，开启慢查询日志（>=200ms）
	slowLogger := logger.New(
		log.New(os.Stdout, "\r\n", log.LstdFlags),
		logger.Config{
			SlowThreshold:             200 * time.Millisecond, // 慢SQL阈值
			LogLevel:                  logger.Warn,            // 只输出警告和错误
			IgnoreRecordNotFoundError: true,                   // 忽略RecordNotFound
			Colorful:                  false,
		},
	)
	DB, err = gorm.Open(mysql.Open(cfg.GetDSN()), &gorm.Config{
		Logger: slowLogger,
	})
	if err != nil {
		log.Fatal("数据库连接失败:", err)
	}
	// 获取底层的 sql.DB 对象以配置连接池
	sqlDB, err := DB.DB()
	if err != nil {
		log.Fatal("获取数据库连接失败:", err)
	}
	// 设置连接池参数
	sqlDB.SetMaxIdleConns(50)                  // 最大空闲连接数（提升以减少连接建立开销）
	sqlDB.SetMaxOpenConns(200)                 // 最大打开连接数（提升以应对高并发）
	sqlDB.SetConnMaxLifetime(30 * time.Minute) // 连接最大生命周期(30分钟)
	sqlDB.SetConnMaxIdleTime(5 * time.Minute)  // 连接最大空闲时间(5分钟，减少频繁创建连接)

	err = DB.Set("gorm:table_options", "ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='员工表'").AutoMigrate(&models.Employee{})
	if err != nil {
		log.Fatal("Employee表迁移失败:", err)
	}

	err = DB.Set("gorm:table_options", "ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='书籍信息表'").AutoMigrate(&models.BookInfo{})
	if err != nil {
		log.Fatal("BookInfo表迁移失败:", err)
	}

	err = DB.Set("gorm:table_options", "ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='客户表'").AutoMigrate(&models.Customer{})
	if err != nil {
		log.Fatal("Customer表迁移失败:", err)
	}

	err = DB.Set("gorm:table_options", "ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='库存表'").AutoMigrate(&models.Inventory{})
	if err != nil {
		log.Fatal("Inventory表迁移失败:", err)
	}

	err = DB.Set("gorm:table_options", "ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='库存明细表'").AutoMigrate(&models.InventoryDetail{})
	if err != nil {
		log.Fatal("InventoryDetail表迁移失败:", err)
	}

	err = DB.Set("gorm:table_options", "ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='库存流水表'").AutoMigrate(&models.InventoryLog{})
	if err != nil {
		log.Fatal("InventoryLog表迁移失败:", err)
	}

	err = DB.Set("gorm:table_options", "ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='库位表'").AutoMigrate(&models.Location{})
	if err != nil {
		log.Fatal("Location表迁移失败:", err)
	}

	err = DB.Set("gorm:table_options", "ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='产品分类表'").AutoMigrate(&models.ProductCategory{})
	if err != nil {
		log.Fatal("ProductCategory表迁移失败:", err)
	}

	err = DB.Set("gorm:table_options", "ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='产品表'").AutoMigrate(&models.Product{})
	if err != nil {
		log.Fatal("Product表迁移失败:", err)
	}

	err = DB.Set("gorm:table_options", "ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='产品单位转换表'").AutoMigrate(&models.ProductUnitConversion{})
	if err != nil {
		log.Fatal("ProductUnitConversion表迁移失败:", err)
	}

	err = DB.Set("gorm:table_options", "ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='产品序列号表'").AutoMigrate(&models.ProductSerial{})
	if err != nil {
		log.Fatal("ProductSerial表迁移失败:", err)
	}

	err = DB.Set("gorm:table_options", "ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='采购订单主表'").AutoMigrate(&models.PurchaseOrder{})
	if err != nil {
		log.Fatal("PurchaseOrder表迁移失败:", err)
	}

	err = DB.Set("gorm:table_options", "ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='采购订单明细表'").AutoMigrate(&models.PurchaseOrderItem{})
	if err != nil {
		log.Fatal("PurchaseOrderItem表迁移失败:", err)
	}

	err = DB.Set("gorm:table_options", "ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='打印任务表'").AutoMigrate(&models.PrintTask{})
	if err != nil {
		log.Fatal("PrintTask表迁移失败:", err)
	}

	err = DB.Set("gorm:table_options", "ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='打印日志表'").AutoMigrate(&models.PrintLog{})
	if err != nil {
		log.Fatal("PrintLog表迁移失败:", err)
	}

	err = DB.Set("gorm:table_options", "ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='入库单主表'").AutoMigrate(&models.ReceivingOrder{})
	if err != nil {
		log.Fatal("ReceivingOrder表迁移失败:", err)
	}

	err = DB.Set("gorm:table_options", "ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='入库单明细表'").AutoMigrate(&models.ReceivingOrderItem{})
	if err != nil {
		log.Fatal("ReceivingOrderItem表迁移失败:", err)
	}

	err = DB.Set("gorm:table_options", "ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='供应商表'").AutoMigrate(&models.Supplier{})
	if err != nil {
		log.Fatal("Supplier表迁移失败:", err)
	}

	err = DB.Set("gorm:table_options", "ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='销售订单主表'").AutoMigrate(&models.SalesOrder{})
	if err != nil {
		log.Fatal("SalesOrder表迁移失败:", err)
	}

	err = DB.Set("gorm:table_options", "ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='销售订单明细表'").AutoMigrate(&models.SalesOrderItem{})
	if err != nil {
		log.Fatal("SalesOrderItem表迁移失败:", err)
	}

	err = DB.Set("gorm:table_options", "ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='仓库表'").AutoMigrate(&models.Warehouse{})
	if err != nil {
		log.Fatal("Warehouse表迁移失败:", err)
	}

	err = DB.Set("gorm:table_options", "ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='波次单主表'").AutoMigrate(&models.WaveHeader{})
	if err != nil {
		log.Fatal("WaveHeader表迁移失败:", err)
	}

	err = DB.Set("gorm:table_options", "ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='波次任务表'").AutoMigrate(&models.WaveTask{})
	if err != nil {
		log.Fatal("WaveTask表迁移失败:", err)
	}

	err = DB.Set("gorm:table_options", "ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='波次任务明细表'").AutoMigrate(&models.WaveTaskDetail{})
	if err != nil {
		log.Fatal("WaveTaskDetail表迁移失败:", err)
	}

	err = DB.Set("gorm:table_options", "ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='小车表'").AutoMigrate(&models.Car{})
	if err != nil {
		log.Fatal("Car表迁移失败:", err)
	}

	err = DB.Set("gorm:table_options", "ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='小车店铺关联表'").AutoMigrate(&models.CarShop{})
	if err != nil {
		log.Fatal("CarShop表迁移失败:", err)
	}

	err = DB.Set("gorm:table_options", "ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='店铺表'").AutoMigrate(&models.Shop{})
	if err != nil {
		log.Fatal("Shop表迁移失败:", err)
	}

	err = DB.Set("gorm:table_options", "ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='员工等级表'").AutoMigrate(&models.EmployeeLevel{})
	if err != nil {
		log.Fatal("EmployeeLevel表迁移失败:", err)
	}

	err = DB.Set("gorm:table_options", "ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='员工等级日志表'").AutoMigrate(&models.EmployeeLevelLog{})
	if err != nil {
		log.Fatal("EmployeeLevelLog表迁移失败:", err)
	}

	err = DB.Set("gorm:table_options", "ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='员工配置表'").AutoMigrate(&models.EmployeeSettings{})
	if err != nil {
		log.Fatal("EmployeeSettings表迁移失败:", err)
	}

	err = DB.Set("gorm:table_options", "ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='盘库单主表'").AutoMigrate(&models.StockCheck{})
	if err != nil {
		log.Fatal("StockCheck表迁移失败:", err)
	}

	err = DB.Set("gorm:table_options", "ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='盘库单明细表'").AutoMigrate(&models.StockCheckItem{})
	if err != nil {
		log.Fatal("StockCheckItem表迁移失败:", err)
	}

	err = DB.Set("gorm:table_options", "ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='外部任务表'").AutoMigrate(&models.OutTask{})
	if err != nil {
		log.Fatal("OutTask表迁移失败:", err)
	}

	err = DB.Set("gorm:table_options", "ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='外部任务异常日志表'").AutoMigrate(&models.OutTaskLog{})
	if err != nil {
		log.Fatal("OutTaskLog表迁移失败:", err)
	}

	err = DB.Set("gorm:table_options", "ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='出库单主表'").AutoMigrate(&models.OutboundOrder{})
	if err != nil {
		log.Fatal("OutboundOrder表迁移失败:", err)
	}

	err = DB.Set("gorm:table_options", "ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='出库单明细表'").AutoMigrate(&models.OutboundOrderItem{})
	if err != nil {
		log.Fatal("OutboundOrderItem表迁移失败:", err)
	}

	err = DB.Set("gorm:table_options", "ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='发货单主表'").AutoMigrate(&models.ShippingOrder{})
	if err != nil {
		log.Fatal("ShippingOrder表迁移失败:", err)
	}

	err = DB.Set("gorm:table_options", "ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='发货单明细表'").AutoMigrate(&models.ShippingOrderItem{})
	if err != nil {
		log.Fatal("ShippingOrderItem表迁移失败:", err)
	}

	err = DB.Set("gorm:table_options", "ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='运费模板表'").AutoMigrate(&models.Logistics{})
	if err != nil {
		log.Fatal("Logistics表迁移失败:", err)
	}

	err = DB.Set("gorm:table_options", "ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='商品日志表'").AutoMigrate(&models.ProductLog{})
	if err != nil {
		log.Fatal("ProductLog表迁移失败:", err)
	}

	err = DB.Set("gorm:table_options", "ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='用户类型表'").AutoMigrate(&models.UserType{})
	if err != nil {
		log.Fatal("UserType表迁移失败:", err)
	}

	err = DB.Set("gorm:table_options", "ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='用户映射表'").AutoMigrate(&models.UserMapping{})
	if err != nil {
		log.Fatal("UserMapping表迁移失败:", err)
	}

	err = DB.Set("gorm:table_options", "ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='分账配置表'").AutoMigrate(&models.SplitAccountConfig{})
	if err != nil {
		log.Fatal("SplitAccountConfig表迁移失败:", err)
	}

	err = DB.Set("gorm:table_options", "ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='分账扣钱日志表'").AutoMigrate(&models.SplitAccountDeductionLog{})
	if err != nil {
		log.Fatal("SplitAccountDeductionLog表迁移失败:", err)
	}

	err = DB.Set("gorm:table_options", "ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='配置表'").AutoMigrate(&models.Config{})
	if err != nil {
		log.Fatal("Config表迁移失败:", err)
	}

	// 初始化商品表
	InitProductBookTables()
	// 初始化默认管理员账号
	createDefaultAdmin()
	// 初始化任务数据库
	InitTaskDB()
	// 打印连接信息
	log.Println("MySQL数据库连接成功:", cfg.Database.Host, cfg.Database.Name)
}

func createDefaultAdmin() {
	var count int64
	DB.Model(&models.Employee{}).Where("role = ?", 255).Count(&count)
	if count == 0 {
		// 创建默认管理员账号：账号init_00000，密码admin123
		hashedPassword, _ := utils.HashPassword("admin123")
		admin := models.Employee{
			EmployeeIDStr: "00000",
			Username:      "init_00000",
			Password:      hashedPassword,
			Name:          "系统管理员",
			Role:          255,
			Score:         0,
			Status:        1,
			Fid:           0,
			AboutId:       0,
			From:          "system",
			CreatedAt:     time.Now().Unix(),
			UpdatedAt:     time.Now().Unix(),
		}
		DB.Create(&admin)
		log.Println("已创建默认管理员账号: init_00000 / admin123")
	}
}