Copy message contents in Telegraf

copyMsg.ts

import type { Composer } from "telegraf";
import type { Update, Message } from "telegraf/types";

function copyMsg(
	ctx: Context<Update.MessageUpdate<Message.TextMessage>>,
	content: Message & Update.NonChannel & Update.New,
) {
	const tg = ctx.telegram;
	const chat_id = ctx.chat.id;
	if ("text" in content)
		return tg.callApi("sendMessage", {
			chat_id,
			reply_markup: content.reply_markup,
			text: content.text,
			entities: content.entities,
		});
	else if ("contact" in content)
		return tg.callApi("sendContact", {
			chat_id,
			reply_markup: content.reply_markup,
			phone_number: content.contact.phone_number,
			first_name: content.contact.first_name,
			last_name: content.contact.last_name,
		});
	else if ("location" in content)
		return tg.callApi("sendLocation", {
			chat_id,
			reply_markup: content.reply_markup,
			latitude: content.location.latitude,
			longitude: content.location.longitude,
		});
	else if ("animation" in content)
		return tg.callApi("sendAnimation", {
			chat_id,
			reply_markup: content.reply_markup,
			animation: content.animation.file_id,
			duration: content.animation.duration,
		});
	else if ("voice" in content)
		return tg.callApi("sendVoice", {
			chat_id,
			reply_markup: content.reply_markup,
			voice: content.voice.file_id,
			duration: content.voice.duration,
			caption: content.caption,
			caption_entities: content.caption_entities,
		});
	else if ("audio" in content)
		return tg.callApi("sendAudio", {
			chat_id,
			reply_markup: content.reply_markup,
			audio: content.audio.file_id,
			duration: content.audio.duration,
			performer: content.audio.performer,
			title: content.audio.title,
			caption: content.caption,
			caption_entities: content.caption_entities,
		});
	else if ("video" in content)
		return tg.callApi("sendVideo", {
			chat_id,
			reply_markup: content.reply_markup,
			video: content.video.file_id,
			caption: content.caption,
			caption_entities: content.caption_entities,
			duration: content.video.duration,
			width: content.video.width,
			height: content.video.height,
		});
	else if ("document" in content)
		return tg.callApi("sendDocument", {
			chat_id,
			reply_markup: content.reply_markup,
			document: content.document.file_id,
			caption: content.caption,
			caption_entities: content.caption_entities,
		});
	else if ("sticker" in content)
		return tg.callApi("sendSticker", {
			chat_id,
			reply_markup: content.reply_markup,
			sticker: content.sticker.file_id,
		});
	else if ("photo" in content)
		return tg.callApi("sendPhoto", {
			chat_id,
			reply_markup: content.reply_markup,
			photo: content.photo.at(-1)!.file_id,
			caption: content.caption,
			caption_entities: content.caption_entities,
		});
	else if ("video_note" in content)
		return tg.callApi("sendVideoNote", {
			chat_id,
			reply_markup: content.reply_markup,
			video_note: content.video_note.file_id,
			length: content.video_note.length,
			duration: content.video_note.duration,
		});
	else if ("poll" in content)
		return tg.callApi("sendPoll", {
			chat_id,
			question: content.poll.question,
			type: content.poll.type,
			is_anonymous: content.poll.is_anonymous,
			allows_multiple_answers: content.poll.allows_multiple_answers,
			correct_option_id: content.poll.correct_option_id,
			options: content.poll.options.map(({ text }) => text),
		});
	else return tg.sendMessage(chat_id, "Unsupported message");
}