package telegram

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

// handleCommand 处理命令
func handleCommand(msg *tgbotapi.Message) {
	command := msg.Command()
	args := msg.CommandArguments()

	core.Log.Infof("处理命令: /%s %s", command, args)

	switch command {
	case "start":
		handleStartCommand(msg)
	case "help":
		handleHelpCommand(msg)
	case "bind":
		handleBindCommand(msg)
	case "balance":
		handleBalanceCommand(msg)
	case "records":
		handleRecordsCommand(msg)
	case "groupinfo":
		handleGroupInfoCommand(msg)
	default:
		sendTextMessage(msg.Chat.ID, "未知命令，使用 /help 查看帮助")
	}
}

// handleStartCommand 处理 /start 命令（私聊时带按钮面板）
func handleStartCommand(msg *tgbotapi.Message) {
	telegramId := msg.From.ID
	username := msg.From.UserName

	// 检查用户是否已注册
	bindService := &services.TgBindService{}
	bound, _ := bindService.IsUserBound(telegramId, username)

	var welcomeText string
	if bound {
		welcomeText = "🎉 欢迎回来！\n\n" +
			"✅ 您已注册，可以直接抢红包\n\n" +
			"🧧 功能介绍：\n" +
			"• 群组定期发放红包福利\n" +
			"• 支持普通红包和手气红包\n\n" +
			"👇 点击下方按钮使用功能："
	} else {
		welcomeText = "🎉 欢迎使用红包机器人！\n\n" +
			"🧧 功能介绍：\n" +
			"• 群组定期发放红包福利\n" +
			"• 支持普通红包（固定金额）\n" +
			"• 支持手气红包（随机金额）\n\n" +
			"📝 使用步骤：\n" +
			"1️⃣ 点击「📝 一键注册」自动注册并绑定\n" +
			"2️⃣ 等待群内红包发放\n" +
			"3️⃣ 点击按钮抢红包\n\n" +
			"👇 点击下方按钮开始："
	}

	keyboard := buildKeyboardForUser(telegramId, username)
	sendMessageWithKeyboard(msg.Chat.ID, welcomeText, keyboard)
}

// handleHelpCommand 处理 /help 命令
func handleHelpCommand(msg *tgbotapi.Message) {
	telegramId := msg.From.ID
	username := msg.From.UserName

	// 检查用户是否已注册
	bindService := &services.TgBindService{}
	bound, _ := bindService.IsUserBound(telegramId, username)

	var helpText string
	if bound {
		helpText = "📖 红包机器人帮助\n\n" +
			"✅ 您已注册，可以直接抢红包\n\n" +
			"🧧 红包玩法：\n" +
			"• 群组定期自动发放红包\n" +
			"• 点击红包消息下方按钮即可抢\n" +
			"• 普通红包：每人金额相同\n" +
			"• 手气红包：每人金额随机\n\n" +
			"💡 按钮功能：\n" +
			"• 💰 余额查询 - 查看抢红包统计\n" +
			"• 📊 抢红包记录 - 查看领取明细\n" +
			"• ❓ 帮助 - 显示此帮助\n\n" +
			"⚠️ 注意：每个红包只能抢一次"
	} else {
		helpText = "📖 红包机器人帮助\n\n" +
			"🧧 红包玩法：\n" +
			"• 群组定期自动发放红包\n" +
			"• 点击红包消息下方按钮即可抢\n" +
			"• 普通红包：每人金额相同\n" +
			"• 手气红包：每人金额随机\n\n" +
			"📝 快速开始：\n" +
			"1️⃣ 点击「📝 一键注册」自动注册并绑定\n" +
			"2️⃣ 等待群内红包，点击抢！\n\n" +
			"💡 按钮功能：\n" +
			"• 📝 一键注册 - 自动注册平台账户\n" +
			"• 💰 余额查询 - 查看抢红包统计\n" +
			"• 📊 抢红包记录 - 查看领取明细\n" +
			"• ❓ 帮助 - 显示此帮助\n\n" +
			"⚠️ 注意：未注册无法抢红包，每个红包只能抢一次"
	}

	keyboard := buildKeyboardForUser(telegramId, username)
	sendMessageWithKeyboard(msg.Chat.ID, helpText, keyboard)
}

// handleBindCommand 处理 /bind 命令
func handleBindCommand(msg *tgbotapi.Message) {
	telegramId := msg.From.ID
	telegramUsername := msg.From.UserName

	bindService := &services.TgBindService{}

	// 检查是否已绑定
	bound, _ := bindService.IsUserBound(telegramId, telegramUsername)
	if bound {
		sendTextMessage(msg.Chat.ID, "✅ 您已绑定平台账户，无需重复绑定。")
		return
	}

	// 生成绑定码
	token, err := bindService.GenerateBindToken(telegramId, telegramUsername)
	if err != nil {
		sendTextMessage(msg.Chat.ID, fmt.Sprintf("⚠️ %s", err.Error()))
		return
	}

	bindURL := generateBindURL(telegramId, token)

	// 发送绑定信息到私聊
	text := fmt.Sprintf("🔗 绑定平台账户\n\n"+
		"您的绑定码: *%s*\n"+
		"⏰ 有效期: 5分钟\n\n"+
		"📝 绑定方式:\n"+
		"1. 登录平台后点击下方链接\n"+
		"2. 或在平台输入绑定码\n\n"+
		"⚠️ 请先注册平台账户", token)

	keyboard := tgbotapi.NewInlineKeyboardMarkup(
		tgbotapi.NewInlineKeyboardRow(
			tgbotapi.NewInlineKeyboardButtonURL("🔗 立即绑定", bindURL),
		),
	)

	// 私聊发送（telegramId 就是私聊 chatId）
	_, sendErr := sendMessageWithKeyboard(telegramId, text, keyboard)

	if msg.Chat.Type == "group" || msg.Chat.Type == "supergroup" {
		if sendErr != nil {
			// 用户未私聊过 Bot，无法发送私信
			botUsername := bot.Self.UserName
			sendTextMessage(msg.Chat.ID, fmt.Sprintf(
				"⚠️ 无法发送私信，请先点击 @%s 并发送 /start 开启私聊，然后再发送 /bind", botUsername))
		} else {
			sendTextMessage(msg.Chat.ID, "📩 绑定信息已通过私信发送，请查看机器人私聊消息。")
		}
	}
}

// handleBalanceCommand 处理 /balance 命令
func handleBalanceCommand(msg *tgbotapi.Message) {
	telegramId := msg.From.ID
	username := msg.From.UserName

	bindService := &services.TgBindService{}
	bound, _ := bindService.IsUserBound(telegramId, username)
	if !bound {
		sendTextMessage(msg.Chat.ID, "⚠️ 请先点击「📝 一键注册」绑定账户")
		return
	}

	platformService := &services.TgPlatformService{}
	records, err := platformService.GetUserGrabRecords(telegramId, 0)
	if err != nil {
		sendTextMessage(msg.Chat.ID, "⚠️ 查询失败，请稍后再试")
		return
	}

	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(msg.Chat.ID, text)
}

// handleRecordsCommand 处理 /records 命令
func handleRecordsCommand(msg *tgbotapi.Message) {
	telegramId := msg.From.ID
	username := msg.From.UserName

	bindService := &services.TgBindService{}
	bound, _ := bindService.IsUserBound(telegramId, username)
	if !bound {
		sendTextMessage(msg.Chat.ID, "⚠️ 请先点击「📝 一键注册」绑定账户")
		return
	}

	platformService := &services.TgPlatformService{}
	records, err := platformService.GetUserGrabRecords(telegramId, 10)
	if err != nil {
		sendTextMessage(msg.Chat.ID, "⚠️ 查询失败，请稍后再试")
		return
	}

	if len(records) == 0 {
		sendTextMessage(msg.Chat.ID, "📊 暂无抢红包记录\n\n等待群内红包发放后即可参与！")
		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(msg.Chat.ID, text)
}

// handleGroupInfoCommand 处理 /groupinfo 命令
func handleGroupInfoCommand(msg *tgbotapi.Message) {
	if msg.Chat.Type != "group" && msg.Chat.Type != "supergroup" {
		sendTextMessage(msg.Chat.ID, "⚠️ 此命令只能在群组中使用")
		return
	}

	chatType := msg.Chat.Type
	if chatType == "group" {
		chatType = "普通群组"
	} else if chatType == "supergroup" {
		chatType = "超级群组"
	}

	username := msg.Chat.UserName
	if username == "" {
		username = "无"
	} else {
		username = "@" + username
	}

	infoText := fmt.Sprintf(`📊 群组信息

🆔 群组ID: <code>%d</code>
📝 群组名称: %s
🔗 用户名: %s
📂 群组类型: %s

💡 提示：
• 点击群组ID可以复制
• 管理员可以使用此ID配置红包发送`,
		msg.Chat.ID,
		msg.Chat.Title,
		username,
		chatType,
	)

	sendHTMLMessage(msg.Chat.ID, infoText)
}

// generateBindURL 生成绑定链接
func generateBindURL(telegramID int64, token string) string {
	baseURL := "https://your-domain.com/bind"
	telegramConfig := config.EnvConf().Telegram
	if telegramConfig != nil && telegramConfig.BindURL != "" {
		baseURL = telegramConfig.BindURL
	}
	return fmt.Sprintf("%s?telegramId=%d&token=%s", baseURL, telegramID, token)
}