telegram_event_handler.go

package telegram

import (
	"bytes"
	"context"
	"image/jpeg"

	tgbotapi "github.com/go-telegram-bot-api/telegram-bot-api/v5"
	"github.com/hectorgimenez/koolo/internal/event"
)

func (b *Bot) Handle(_ context.Context, m event.Message) error {
	if m.Image != nil {
		buf := new(bytes.Buffer)
		err := jpeg.Encode(buf, m.Image, nil)
		if err != nil {
			return err
		}

		photo := tgbotapi.NewPhoto(b.chatID, tgbotapi.FileBytes{
			Name:  m.Message,
			Bytes: buf.Bytes(),
		})
		photo.Caption = m.Message

		_, err = b.bot.Send(photo)

		return err
	}

	_, err := b.bot.Send(tgbotapi.NewMessage(b.chatID, m.Message))

	return err
}