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"
)

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

	fmt.Println("Applying migration to cloud DB...")
	err = db.Exec("ALTER TABLE order_coupons ADD UNIQUE INDEX idx_order_user_coupon (order_id, user_coupon_id);").Error
	if err != nil {
		fmt.Printf("Migration failed: %v\n", err)
	} else {
		fmt.Println("Migration successful: Added unique index to order_coupons.")
	}
}