package telegram

import (
	"app/commons/core"
	"app/commons/i18n"
	"app/commons/services"
	"fmt"
	tgbotapi "github.com/go-telegram-bot-api/telegram-bot-api/v5"
)

// sendTextMessage 发送文本消息
func sendTextMessage(chatID int64, text string) {
	if !IsEnabled() {
		return
	}

	msg := tgbotapi.NewMessage(chatID, text)
	msg.ParseMode = "Markdown"

	_, err := bot.Send(msg)
	if err != nil {
		core.Log.Errorf("发送消息失败: %v", err)
	}
}

// sendHTMLMessage 发送 HTML 格式的消息
func sendHTMLMessage(chatID int64, text string) {
	if !IsEnabled() {
		return
	}

	msg := tgbotapi.NewMessage(chatID, text)
	msg.ParseMode = "HTML"

	_, err := bot.Send(msg)
	if err != nil {
		core.Log.Errorf("发送消息失败: %v", err)
	}
}

// sendMessageWithKeyboard 发送带按钮的消息，返回 (messageID, error)
func sendMessageWithKeyboard(chatID int64, text string, keyboard tgbotapi.InlineKeyboardMarkup) (int, error) {
	if !IsEnabled() {
		return 0, fmt.Errorf("bot未启用")
	}

	msg := tgbotapi.NewMessage(chatID, text)
	msg.ReplyMarkup = keyboard
	msg.ParseMode = "Markdown"

	result, err := bot.Send(msg)
	if err != nil {
		// 处理群组升级为超级群的情况
		if tgErr, ok := err.(*tgbotapi.Error); ok && tgErr.Code == 400 && tgErr.ResponseParameters.MigrateToChatID != 0 {
			newChatID := tgErr.ResponseParameters.MigrateToChatID
			core.Log.Infof("群组已升级，自动重试: %d -> %d", chatID, newChatID)
			// 异步更新数据库中的群组ID
			go updateGroupChatID(chatID, newChatID)
			// 用新 ID 重发
			msg.ChatID = newChatID
			result, err = bot.Send(msg)
			if err != nil {
				core.Log.Errorf("用新群组ID重发消息失败: %v", err)
				return 0, err
			}
			return result.MessageID, nil
		}
		core.Log.Errorf("发送消息失败: %v", err)
		return 0, err
	}
	return result.MessageID, nil
}

// editMessage 编辑消息（纯文本，避免用户名中 _ 等字符被 Markdown 解析出错）
func editMessage(chatID int64, messageID int, text string) {
	if !IsEnabled() {
		return
	}

	edit := tgbotapi.NewEditMessageText(chatID, messageID, text)

	_, err := bot.Send(edit)
	if err != nil {
		core.Log.Errorf("编辑消息失败: %v", err)
	}
}

// editMessageWithKeyboard 编辑消息并保留按钮（纯文本）
func editMessageWithKeyboard(chatID int64, messageID int, text string, keyboard tgbotapi.InlineKeyboardMarkup) {
	if !IsEnabled() {
		return
	}

	edit := tgbotapi.NewEditMessageTextAndMarkup(chatID, messageID, text, keyboard)

	_, err := bot.Send(edit)
	if err != nil {
		core.Log.Errorf("编辑消息失败: %v", err)
	}
}

// answerCallback 回复回调查询
func answerCallback(callbackID string, text string) {
	if !IsEnabled() {
		return
	}

	callback := tgbotapi.NewCallback(callbackID, text)
	callback.ShowAlert = false

	_, err := bot.Request(callback)
	if err != nil {
		core.Log.Errorf("回复回调失败: %v", err)
	}
}

// sendGroupWelcome 发送机器人加入群组欢迎消息（带按钮面板）
func sendGroupWelcome(chatID int64) {
	text := "👋 大家好！我是红包机器人\n\n" +
		"🎉 功能介绍：\n" +
		"• 定期发放群组红包福利\n" +
		"• 支持普通红包和手气红包\n\n" +
		"📝 点击「一键注册」即可参与抢红包："

	keyboard := buildWelcomeKeyboard()
	sendMessageWithKeyboard(chatID, text, keyboard)
}

// sendNewMemberWelcome 发送新成员欢迎消息（带按钮面板）
func sendNewMemberWelcome(chatID int64, username, firstName string) {
	displayName := firstName
	if username != "" {
		displayName = "@" + username
	}

	text := fmt.Sprintf("👋 欢迎 %s 加入群组！\n\n"+
		"🧧 本群定期发放红包福利！\n\n"+
		"📝 点击下方「一键注册」即可参与抢红包：", displayName)

	keyboard := buildWelcomeKeyboard()
	sendMessageWithKeyboard(chatID, text, keyboard)
}

// SendRedPacketToGroup 发送红包消息到群组（供外部调用），返回 Telegram 消息ID
func SendRedPacketToGroup(groupID string, packetNo string, senderName string, totalAmount float64, totalCount int, packetType int, blessingWords string, expireMinutes int, lang string, symbol string) int {
	if !IsEnabled() {
		core.Log.Warn("Telegram Bot 未启用，无法发送红包消息")
		return 0
	}

	if symbol == "" {
		symbol = i18n.DefaultSymbol(lang)
	}

	m := i18n.GetLang(lang)
	packetTypeText := i18n.PacketTypeText(packetType, lang)
	expireText := i18n.FormatExpireTime(expireMinutes, lang)

	countStr := fmt.Sprintf("%d %s", totalCount, m.CountUnit)
	if m.CountUnit == "" {
		countStr = fmt.Sprintf("%d", totalCount)
	}

	text := fmt.Sprintf("%s\n💰 %s\n\n%s: %.2f %s\n%s: %s\n%s: %s\n⏰ %s: %s\n\n%s",
		fmt.Sprintf(m.SendRedPacket, senderName),
		blessingWords,
		m.TotalAmount, totalAmount, symbol,
		m.Count, countStr,
		m.Type, packetTypeText,
		m.ValidFor, expireText,
		m.ComeGrab)

	// 创建抢红包按钮
	keyboard := tgbotapi.NewInlineKeyboardMarkup(
		tgbotapi.NewInlineKeyboardRow(
			tgbotapi.NewInlineKeyboardButtonData(
				m.GrabButton,
				fmt.Sprintf("grab_%s", packetNo),
			),
		),
	)

	// 解析群组 ID（字符串转 int64）
	var chatID int64
	fmt.Sscanf(groupID, "%d", &chatID)

	msgId, _ := sendMessageWithKeyboard(chatID, text, keyboard)
	return msgId
}

// PreviewRedPacketToGroup 发送红包预览消息到群组（供外部调用）
func PreviewRedPacketToGroup(groupID string, senderName string, totalAmount float64, totalCount int, packetType int, blessingWords string, symbol string) {
	if !IsEnabled() {
		core.Log.Warn("Telegram Bot 未启用，无法发送预览消息")
		return
	}

	if symbol == "" {
		symbol = "VND"
	}

	var packetTypeText string
	if packetType == 1 {
		packetTypeText = "普通红包"
	} else {
		packetTypeText = "手气红包"
	}

	text := fmt.Sprintf(`🔍 【预览模式】红包预览

🧧 %s 发了一个红包
💰 %s

总金额: %.2f %s
个数: %d 个
类型: %s

⚠️ 这是预览消息，不是真实红包
实际发送时才能抢红包`,
		senderName,
		blessingWords,
		totalAmount, symbol,
		totalCount,
		packetTypeText)

	// 解析群组 ID（字符串转 int64）
	var chatID int64
	fmt.Sscanf(groupID, "%d", &chatID)

	sendTextMessage(chatID, text)
}

// EditExpiredMessage 编辑过期红包消息（导出供 service 调用，移除按钮）
func EditExpiredMessage(chatID int64, messageID int, text string) {
	editMessage(chatID, messageID, text)
}

// updateGroupChatID 群组升级后更新数据库中的 chat_id
func updateGroupChatID(oldChatID, newChatID int64) {
	db := services.NewComService().DB()
	if db == nil {
		return
	}
	// 将旧群组记录标记为无效
	db.Table("magic_tg_group").
		Where("chat_id = ?", fmt.Sprintf("%d", oldChatID)).
		Updates(map[string]interface{}{"status": 0})
	core.Log.Infof("群组升级: 旧ID %d 已标记无效, 新ID %d", oldChatID, newChatID)
}