Add Telegram integration

integration/telegrambot/telegrambot.go

@@ -0,0 +1,41 @@
+package telegrambot
+
+import (
+	"bytes"
+	"fmt"
+	"html/template"
+	"strconv"
+
+	tgbotapi "github.com/go-telegram-bot-api/telegram-bot-api"
+	"miniflux.app/model"
+)
+
+// PushEntry pushes entry to telegram chat using integration settings provided
+func PushEntry(entry *model.Entry, botToken, chatID string) error {
+	bot, err := tgbotapi.NewBotAPI(botToken)
+	if err != nil {
+		return fmt.Errorf("telegrambot: create bot failed: %w", err)
+	}
+
+	t, err := template.New("message").Parse("{{ .Title }}\n<a href=\"{{ .URL }}\">{{ .URL }}</a>")
+	if err != nil {
+		return fmt.Errorf("telegrambot: parse template failed: %w", err)
+	}
+
+	var result bytes.Buffer
+
+	err = t.Execute(&result, entry)
+	if err != nil {
+		return fmt.Errorf("telegrambot: execute template failed: %w", err)
+	}
+
+	chatId, _ := strconv.ParseInt(chatID, 10, 64)
+	msg := tgbotapi.NewMessage(chatId, result.String())
+	msg.ParseMode = tgbotapi.ModeHTML
+	msg.DisableWebPagePreview = false
+	if _, err := bot.Send(msg); err != nil {
+		return fmt.Errorf("telegrambot: send message failed: %w", err)
+	}
+
+	return nil
+}