feat: external notification

internal/notification/telegram.go

@@ -0,0 +1,54 @@
+package notification
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"strconv"
+
+	"github.com/0xJacky/Nginx-UI/model"
+	"github.com/nikoksr/notify"
+	"github.com/nikoksr/notify/service/telegram"
+	"github.com/uozi-tech/cosy/map2struct"
+)
+
+// @external_notifier(Telegram)
+type Telegram struct {
+	BotToken string `json:"bot_token" title:"Bot Token"`
+	ChatID   string `json:"chat_id" title:"Chat ID"`
+}
+
+func init() {
+	RegisterExternalNotifier("telegram", func(ctx context.Context, n *model.ExternalNotify, msg *ExternalMessage) error {
+		telegramConfig := &Telegram{}
+		err := map2struct.WeakDecode(n.Config, telegramConfig)
+		if err != nil {
+			return err
+		}
+		if telegramConfig.BotToken == "" || telegramConfig.ChatID == "" {
+			return ErrInvalidNotifierConfig
+		}
+
+		telegramService, err := telegram.New(telegramConfig.BotToken)
+		if err != nil {
+			return err
+		}
+
+		// ChatID must be an integer for telegram service
+		chatIDInt, err := strconv.ParseInt(telegramConfig.ChatID, 10, 64)
+		if err != nil {
+			return fmt.Errorf("invalid Telegram Chat ID '%s': %w", telegramConfig.ChatID, err)
+		}
+
+		// Check if chatIDInt is 0, which might indicate an empty or invalid input was parsed
+		if chatIDInt == 0 {
+			return errors.New("invalid Telegram Chat ID: cannot be zero")
+		}
+
+		telegramService.AddReceivers(chatIDInt)
+
+		externalNotify := notify.New()
+		externalNotify.UseServices(telegramService)
+		return externalNotify.Send(ctx, msg.GetTitle(n.Language), msg.GetContent(n.Language))
+	})
+}