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("--- User Coupon Ledger Structure (Cloud DB) ---")
	var columns []struct {
		Field   string
		Type    string
		Null    string
		Key     string
		Default *string
		Extra   string
	}
	db.Raw("DESC user_coupon_ledger").Scan(&columns)
	for _, col := range columns {
		fmt.Printf("%-15s %-15s %-5s %-5s\n", col.Field, col.Type, col.Null, col.Key)
	}

	fmt.Println("\n--- User 9090 Coupon 260 Trace (Cloud DB) ---")
	var results []map[string]interface{}
	db.Raw("SELECT id, user_id, user_coupon_id, change_amount, balance_after, order_id, action, created_at FROM user_coupon_ledger WHERE user_coupon_id = 260 ORDER BY id ASC").Scan(&results)
	for _, res := range results {
		fmt.Printf("ID: %v, Action: %v, Change: %v, Bal: %v, Order: %v, Time: %v\n",
			res["id"], res["action"], res["change_amount"], res["balance_after"], res["order_id"], res["created_at"])
	}
}