package telegram

import (
	"app/commons/core"
	"app/commons/services"
	"fmt"
	tgbotapi "github.com/go-telegram-bot-api/telegram-bot-api/v5"
	"strings"
)

// handleActionCallback 处理按钮面板的回调（action_ 前缀）
func handleActionCallback(callback *tgbotapi.CallbackQuery) {
	action := strings.TrimPrefix(callback.Data, "action_")

	switch action {
	case "register":
		handleRegisterAction(callback)
	case "balance":
		handleBalanceAction(callback)
	case "records":
		handleRecordsAction(callback)
	case "help":
		handleHelpAction(callback)
	default:
		answerCallback(callback.ID, "未知操作")
	}
}

// handleRegisterAction 一键注册+绑定
func handleRegisterAction(callback *tgbotapi.CallbackQuery) {
	telegramId := callback.From.ID
	username := callback.From.UserName
	firstName := callback.From.FirstName

	platformService := &services.TgPlatformService{}

	userId, isNew, err := platformService.RegisterAndBind(telegramId, username, firstName)
	if err != nil {
		answerCallback(callback.ID, fmt.Sprintf("⚠️ %s", err.Error()))
		core.Log.Errorf("一键注册失败 - telegramId: %d, error: %v", telegramId, err)
		return
	}

	if isNew {
		answerCallback(callback.ID, "✅ 注册成功！已自动绑定，可以抢红包了！")
		// 私信发送详细信息
		text := fmt.Sprintf("🎉 注册成功！\n\n"+
			"✅ 平台账户已创建并自动绑定\n"+
			"🆔 用户ID: %d\n\n"+
			"现在可以直接在群里抢红包了！", userId)
		sendTextMessage(telegramId, text)
	} else {
		// 用户已存在（之前通过OAuth注册但未在bot绑定），现在已自动绑定
		answerCallback(callback.ID, "✅ 已绑定！可以抢红包了！")
	}

	core.Log.Infof("一键注册 - 用户: %s, telegramId: %d, userId: %d, isNew: %v",
		username, telegramId, userId, isNew)
}

// handleBalanceAction 查询余额
func handleBalanceAction(callback *tgbotapi.CallbackQuery) {
	telegramId := callback.From.ID
	username := callback.From.UserName

	// 检查绑定状态
	bindService := &services.TgBindService{}
	bound, _ := bindService.IsUserBound(telegramId, username)
	if !bound {
		answerCallback(callback.ID, "⚠️ 请先点击「一键注册」绑定账户")
		return
	}

	// 查询本地抢红包总额
	platformService := &services.TgPlatformService{}
	records, err := platformService.GetUserGrabRecords(telegramId, 0)
	if err != nil {
		answerCallback(callback.ID, "⚠️ 查询失败，请稍后再试")
		return
	}

	// 统计抢红包总额和次数
	var totalAmount float64
	for _, r := range records {
		totalAmount += r.Amount.InexactFloat64()
	}

	text := fmt.Sprintf("💰 账户信息\n\n"+
		"🧧 抢红包次数: %d 次\n"+
		"💵 抢红包总额: %.2f\n\n"+
		"💡 详细余额请登录平台查看",
		len(records), totalAmount)

	sendTextMessage(telegramId, text)
	answerCallback(callback.ID, "💰 已发送到私聊")
}

// handleRecordsAction 查询抢红包记录
func handleRecordsAction(callback *tgbotapi.CallbackQuery) {
	telegramId := callback.From.ID
	username := callback.From.UserName

	// 检查绑定状态
	bindService := &services.TgBindService{}
	bound, _ := bindService.IsUserBound(telegramId, username)
	if !bound {
		answerCallback(callback.ID, "⚠️ 请先点击「一键注册」绑定账户")
		return
	}

	// 查询最近10条记录
	platformService := &services.TgPlatformService{}
	records, err := platformService.GetUserGrabRecords(telegramId, 10)
	if err != nil {
		answerCallback(callback.ID, "⚠️ 查询失败，请稍后再试")
		return
	}

	if len(records) == 0 {
		sendTextMessage(telegramId, "📊 暂无抢红包记录\n\n等待群内红包发放后即可参与！")
		answerCallback(callback.ID, "📊 已发送到私聊")
		return
	}

	text := "📊 最近抢红包记录\n\n"
	for i, r := range records {
		timeStr := r.GrabbedAt.Format("01-02 15:04")
		bestTag := ""
		if r.IsBest == 1 {
			bestTag = " 🏆"
		}
		text += fmt.Sprintf("%d. %s | %.2f%s\n", i+1, timeStr, r.Amount.InexactFloat64(), bestTag)
	}
	text += "\n💡 🏆 = 手气最佳"

	sendTextMessage(telegramId, text)
	answerCallback(callback.ID, "📊 已发送到私聊")
}

// handleHelpAction 帮助信息
func handleHelpAction(callback *tgbotapi.CallbackQuery) {
	helpText := `📖 红包机器人帮助

🧧 红包相关：
• 群组定期自动发放红包
• 点击红包消息下方的按钮即可抢红包
• 普通红包：每人金额相同
• 手气红包：每人金额随机

📝 使用步骤：
1️⃣ 点击「📝 一键注册」自动注册并绑定
2️⃣ 等待群内红包发放
3️⃣ 点击红包按钮抢红包

💡 按钮功能：
• 📝 一键注册 - 自动注册平台账户并绑定
• 💰 余额查询 - 查看抢红包统计
• 📊 抢红包记录 - 查看最近领取记录
• ❓ 帮助 - 显示此帮助信息

⚠️ 注意：
• 未注册无法抢红包
• 每个红包只能抢一次
• 红包有效期由管理员设定`

	sendTextMessage(callback.From.ID, helpText)
	answerCallback(callback.ID, "📖 已发送到私聊")
}

// buildWelcomeKeyboard 构建欢迎消息按钮面板（群组消息用，含注册按钮）
func buildWelcomeKeyboard() tgbotapi.InlineKeyboardMarkup {
	return tgbotapi.NewInlineKeyboardMarkup(
		tgbotapi.NewInlineKeyboardRow(
			tgbotapi.NewInlineKeyboardButtonData("📝 一键注册", "action_register"),
			tgbotapi.NewInlineKeyboardButtonData("💰 余额查询", "action_balance"),
		),
		tgbotapi.NewInlineKeyboardRow(
			tgbotapi.NewInlineKeyboardButtonData("📊 抢红包记录", "action_records"),
			tgbotapi.NewInlineKeyboardButtonData("❓ 帮助", "action_help"),
		),
	)
}

// buildKeyboardForUser 根据用户绑定状态构建按钮面板（私聊用）
// 已注册用户不显示"一键注册"按钮
func buildKeyboardForUser(telegramId int64, username string) tgbotapi.InlineKeyboardMarkup {
	bindService := &services.TgBindService{}
	bound, _ := bindService.IsUserBound(telegramId, username)

	if bound {
		// 已注册：只显示功能按钮
		return tgbotapi.NewInlineKeyboardMarkup(
			tgbotapi.NewInlineKeyboardRow(
				tgbotapi.NewInlineKeyboardButtonData("💰 余额查询", "action_balance"),
				tgbotapi.NewInlineKeyboardButtonData("📊 抢红包记录", "action_records"),
			),
			tgbotapi.NewInlineKeyboardRow(
				tgbotapi.NewInlineKeyboardButtonData("❓ 帮助", "action_help"),
			),
		)
	}

	// 未注册：显示完整面板（含注册按钮）
	return buildWelcomeKeyboard()
}