package main

import (
	"database/sql"
	"fmt"
	"log"

	_ "github.com/go-sql-driver/mysql"
)

func main() {
	dsn := "root:bindbox2025kdy@tcp(150.158.78.154:3306)/bindbox_game"
	db, err := sql.Open("mysql", dsn)
	if err != nil {
		log.Fatal(err)
	}
	defer db.Close()

	// 1. 检查直播间抽奖是否有重复 (Draw Count > Product Count)
	// 注意：shop_order_id 是字符串，join 时注意字符集，不过这里都是 utf8mb4 应该没问题
	query := `
		SELECT 
			o.shop_order_id,
			o.product_count,
			COUNT(l.id) as draw_count,
			o.user_nickname
		FROM douyin_orders o
		JOIN livestream_draw_logs l ON CONVERT(o.shop_order_id USING utf8mb4) = CONVERT(l.shop_order_id USING utf8mb4)
		GROUP BY o.shop_order_id, o.product_count, o.user_nickname
		HAVING draw_count > o.product_count
	`

	rows, err := db.Query(query)
	if err != nil {
		log.Fatal(err)
	}
	defer rows.Close()

	fmt.Println("--- Duplicate Rewards Check (Livestream) ---")
	found := false
	for rows.Next() {
		var orderID, nickname string
		var pCount, dCount int
		if err := rows.Scan(&orderID, &pCount, &dCount, &nickname); err != nil {
			log.Fatal(err)
		}
		fmt.Printf("Order: %s | Nickname: %s | Bought: %d | Issued: %d\n", orderID, nickname, pCount, dCount)
		found = true
	}

	if !found {
		fmt.Println("No duplicate rewards found in livestream_draw_logs.")
	}

	// 2. 额外检查：是否有同一个 shop_order_id 在极短时间内产生多条 log (并发问题特质)
	// 这里简单检查是否有完全重复的 log (除了主键不同，其他关键字段相同)
	// 或者检查是否有订单在非直播抽奖表也发了奖 (如果两边系统混用)
}