package data

import (
	"database/sql"
	"fmt"
	"gorm.io/driver/mysql"
	"gorm.io/gorm"
	"gorm.io/gorm/logger"
	"time"
	"voucher/internal/conf"
)

type GormDb struct {
	Client *gorm.DB
}

func NewGormDb(c *conf.Bootstrap) (*GormDb, func()) {
	db1, mf := db(c.Data.Db)
	cleanup := func() {
		mf()
	}
	return &GormDb{
		Client: db1,
	}, cleanup
}

func db(data *conf.Data_Database) (*gorm.DB, func()) {
	mysqlConn, err := sql.Open(data.Driver, data.Source)

	gormDB, err := gorm.Open(
		mysql.New(
			mysql.Config{
				Conn: mysqlConn,
			},
		),
		&gorm.Config{
			Logger: logger.Default.LogMode(logger.Info),
		},
	)

	if err != nil {
		panic("failed to connect database " + err.Error())
	}

	sqlDB, err := gormDB.DB()
	if err != nil {
		panic("failed to gormDB " + err.Error())
	}

	//sqlDB.SetMaxIdleConns(int(data.MaxIdle))
	sqlDB.SetMaxIdleConns(1000)
	//sqlDB.SetMaxOpenConns(int(data.MaxOpen))
	sqlDB.SetMaxOpenConns(3000)
	//sqlDB.SetConnMaxLifetime(1 * time.Hour)
	sqlDB.SetConnMaxLifetime(1 * time.Hour)
	sqlDB.SetConnMaxIdleTime(15 * time.Minute)

	return gormDB, func() {

		if mysqlConn != nil {
			fmt.Println("关闭 db")
			if err := mysqlConn.Close(); err != nil {
				fmt.Printf("关闭 db 失败：%v", err)
			}
		}

	}
}