226 lines
6.6 KiB
Go
226 lines
6.6 KiB
Go
package bot
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import (
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"context"
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"fmt"
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"log"
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"strings"
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"time"
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xchart "xiaji-go/internal/chart"
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"xiaji-go/internal/service"
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"xiaji-go/models"
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tgbotapi "github.com/go-telegram-bot-api/telegram-bot-api/v5"
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"gorm.io/gorm"
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)
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// DefaultUserID 统一用户ID，使所有平台共享同一份账本
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const DefaultUserID int64 = 1
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type TGBot struct {
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api *tgbotapi.BotAPI
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finance *service.FinanceService
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db *gorm.DB
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}
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func NewTGBot(db *gorm.DB, token string, finance *service.FinanceService) (*TGBot, error) {
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bot, err := tgbotapi.NewBotAPI(token)
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if err != nil {
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return nil, err
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}
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return &TGBot{api: bot, finance: finance, db: db}, nil
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}
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func (b *TGBot) Start(ctx context.Context) {
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u := tgbotapi.NewUpdate(0)
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u.Timeout = 60
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updates := b.api.GetUpdatesChan(u)
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log.Println("🚀 Telegram Bot 已启动")
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for {
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select {
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case <-ctx.Done():
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log.Println("⏳ Telegram Bot 正在停止...")
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b.api.StopReceivingUpdates()
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return
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case update, ok := <-updates:
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if !ok {
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return
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}
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if update.Message == nil || update.Message.Text == "" {
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continue
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}
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eventID := fmt.Sprintf("tg:%d", update.UpdateID)
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if b.isDuplicate(eventID) {
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continue
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}
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log.Printf("📩 inbound platform=telegram event=%s chat=%d user=%d text=%q", eventID, update.Message.Chat.ID, update.Message.From.ID, strings.TrimSpace(update.Message.Text))
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b.handleMessage(update.Message)
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}
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}
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}
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func (b *TGBot) isDuplicate(eventID string) bool {
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if b.db == nil || strings.TrimSpace(eventID) == "" {
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return false
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}
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var existed models.MessageDedup
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if err := b.db.Where("platform = ? AND event_id = ?", "telegram", eventID).First(&existed).Error; err == nil {
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return true
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}
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_ = b.db.Create(&models.MessageDedup{Platform: "telegram", EventID: eventID, ProcessedAt: time.Now()}).Error
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return false
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}
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func (b *TGBot) handleMessage(msg *tgbotapi.Message) {
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text := msg.Text
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chatID := msg.Chat.ID
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var reply string
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switch {
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case text == "/start":
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reply = "🦞 欢迎使用虾记记账！\n\n直接发送消费描述即可记账，例如：\n• 午饭 25元\n• 打车 ¥30\n• 买咖啡15块\n\n命令：\n/list - 查看最近记录\n/today - 今日汇总\n/chart - 本月图表\n/help - 帮助"
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case text == "/help":
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reply = "📖 使用说明：\n\n直接发送带金额的文本即可自动记账。\n系统会自动识别金额和消费分类。\n\n支持格式：\n• 午饭 25元\n• ¥30 打车\n• 买水果15块\n\n命令：\n/list - 最近10条记录\n/today - 今日汇总\n/chart - 本月消费图表\n/week - 近7天每日趋势\n/start - 欢迎信息"
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case text == "/today":
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today := time.Now().Format("2006-01-02")
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items, err := b.finance.GetTransactionsByDate(DefaultUserID, today)
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if err != nil {
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reply = "❌ 查询失败"
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} else if len(items) == 0 {
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reply = fmt.Sprintf("📭 %s 暂无消费记录", today)
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} else {
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var sb strings.Builder
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var total int64
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sb.WriteString(fmt.Sprintf("📊 今日（%s）消费：\n\n", today))
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for _, item := range items {
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sb.WriteString(fmt.Sprintf("• %s：%.2f元\n", item.Category, item.AmountYuan()))
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total += item.Amount
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}
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sb.WriteString(fmt.Sprintf("\n💰 共 %d 笔，合计 %.2f 元", len(items), float64(total)/100.0))
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reply = sb.String()
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}
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case text == "/chart":
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b.sendMonthlyChart(chatID)
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return
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case text == "/week":
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b.sendWeeklyChart(chatID)
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return
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case text == "/list":
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items, err := b.finance.GetTransactions(DefaultUserID, 10)
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if err != nil {
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reply = "❌ 查询失败"
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} else if len(items) == 0 {
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reply = "📭 暂无记录"
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} else {
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var sb strings.Builder
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sb.WriteString("📋 最近记录：\n\n")
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for _, item := range items {
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sb.WriteString(fmt.Sprintf("• [%s] %s：%.2f元\n", item.Date, item.Category, item.AmountYuan()))
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}
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reply = sb.String()
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}
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case strings.HasPrefix(text, "/"):
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reply = "❓ 未知命令，输入 /help 查看帮助"
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default:
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amount, category, err := b.finance.AddTransaction(DefaultUserID, text)
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if err != nil {
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reply = "❌ 记账失败，请稍后重试"
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log.Printf("记账失败: %v", err)
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} else if amount == 0 {
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reply = "📍 没看到金额，这笔花了多少钱？"
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} else {
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amountYuan := float64(amount) / 100.0
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reply = fmt.Sprintf("✅ 已记入【%s】：%.2f元\n📝 备注：%s", category, amountYuan, text)
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}
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}
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m := tgbotapi.NewMessage(chatID, reply)
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if _, err := b.api.Send(m); err != nil {
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log.Printf("发送消息失败 chat=%d: %v", chatID, err)
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}
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}
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func (b *TGBot) sendMonthlyChart(chatID int64) {
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now := time.Now()
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dateFrom := now.Format("2006-01") + "-01"
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dateTo := now.Format("2006-01-02")
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title := fmt.Sprintf("%d年%d月消费分类", now.Year(), now.Month())
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stats, err := b.finance.GetCategoryStats(DefaultUserID, dateFrom, dateTo)
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if err != nil || len(stats) == 0 {
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m := tgbotapi.NewMessage(chatID, "📭 本月暂无消费数据")
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b.api.Send(m)
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return
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}
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imgData, err := xchart.GeneratePieChart(stats, title)
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if err != nil {
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log.Printf("生成饼图失败: %v", err)
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m := tgbotapi.NewMessage(chatID, "❌ 图表生成失败")
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b.api.Send(m)
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return
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}
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var total int64
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var totalCount int
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for _, s := range stats {
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total += s.Total
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totalCount += s.Count
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}
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caption := fmt.Sprintf("📊 %s\n💰 共 %d 笔，合计 %.2f 元", title, totalCount, float64(total)/100.0)
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photo := tgbotapi.NewPhoto(chatID, tgbotapi.FileBytes{Name: "chart.png", Bytes: imgData})
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photo.Caption = caption
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if _, err := b.api.Send(photo); err != nil {
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log.Printf("发送图表失败 chat=%d: %v", chatID, err)
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}
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}
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func (b *TGBot) sendWeeklyChart(chatID int64) {
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now := time.Now()
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dateFrom := now.AddDate(0, 0, -6).Format("2006-01-02")
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dateTo := now.Format("2006-01-02")
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title := fmt.Sprintf("近7天消费趋势 (%s ~ %s)", dateFrom[5:], dateTo[5:])
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stats, err := b.finance.GetDailyStats(DefaultUserID, dateFrom, dateTo)
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if err != nil || len(stats) == 0 {
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m := tgbotapi.NewMessage(chatID, "📭 近7天暂无消费数据")
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b.api.Send(m)
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return
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}
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imgData, err := xchart.GenerateBarChart(stats, title)
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if err != nil {
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log.Printf("生成柱状图失败: %v", err)
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m := tgbotapi.NewMessage(chatID, "❌ 图表生成失败")
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b.api.Send(m)
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return
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}
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var total int64
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var totalCount int
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for _, s := range stats {
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total += s.Total
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totalCount += s.Count
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}
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caption := fmt.Sprintf("📈 %s\n💰 共 %d 笔，合计 %.2f 元", title, totalCount, float64(total)/100.0)
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photo := tgbotapi.NewPhoto(chatID, tgbotapi.FileBytes{Name: "chart.png", Bytes: imgData})
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photo.Caption = caption
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if _, err := b.api.Send(photo); err != nil {
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log.Printf("发送图表失败 chat=%d: %v", chatID, err)
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}
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}
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