package main

import (
	"fmt"
	"log"

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

const (
	DbDSN = "root:bindbox2025kdy@tcp(150.158.78.154:3306)/dev_game?charset=utf8mb4&parseTime=True&loc=Local"
)

type UserCoupons struct {
	ID            int64 `gorm:"column:id"`
	BalanceAmount int64 `gorm:"column:balance_amount"`
	CouponID      int64 `gorm:"column:coupon_id"`
}

type SystemCoupons struct {
	ID            int64  `gorm:"column:id"`
	Name          string `gorm:"column:name"`
	DiscountValue int64  `gorm:"column:discount_value"`
}

func main() {
	db, err := gorm.Open(mysql.Open(DbDSN), &gorm.Config{})
	if err != nil {
		log.Fatalf("DB connection failed: %v", err)
	}

	userID := 9090
	var userCoupons []UserCoupons
	db.Table("user_coupons").Where("user_id = ?", userID).Find(&userCoupons)

	fmt.Printf("--- Balance Check for User %d ---\n", userID)
	for _, uc := range userCoupons {
		var sc SystemCoupons
		db.Table("system_coupons").First(&sc, uc.CouponID)
		fmt.Printf("Coupon ID: %d, Name: %s, Original: %d, Balance: %d\n",
			uc.ID, sc.Name, sc.DiscountValue, uc.BalanceAmount)
	}
}