Botol Telegram Bot

Simple Examples

1import { BotolTg } from '@botol/tg-bot';
2
3let bot = new BotolTg('<token>');
4bot.on('text', (ctx, next) => {
5    ctx.reply('Hello ' + ctx.text);
6});
7bot.use((ctx, next) => {
8    ctx.reply('Enter name');
9});
10bot.startPolling();

Middlewares

Name	Description
Session	Adding session to Context
Threads	Make bot multithreaded

Events

Pass as first param in on

Name	Description
'message'	Call when update has param message
'callback_query'	Call when update has param callback_query
'text'	Call when update has param message.text
'callback_data'	Call when update has param callback_query.data

Context

Property	Description
telegram	TgClient instance with methods
update	Received update
message	(Optional) Message from update
callback_query	(Optional) CallbackQuery from update
chat	(Optional) Chat from update
text	(Optional) Extracted from message
callbackData	(Optional) Extracted from callback_query
chat	(Optional) Extracted from one of several params
from	(Optional) Extracted from one of several params

Method	Arguments	Type	Description
reply			Throw error if the chat property don't exists
	text	string	Text to send
	markup	Markup or ExtraMarkup	(Optional) Extra markup like keyboard or disable preview
answerCbQuery			Throw error if the callback_query property don't exists
	text	string	(Optional) Text to send
	showAlert	boolean	(Optional) Show alert

Markup

• keyboard

  1    Markup.keyboard(['Option 1', 'Option 2'])

• inline keyboard

  1    Markup.inlineKeyboard([
  2        { text: 'Option 1', callback_data: 'Option1' },
  3        { text: 'Option 2', callback_data: 'Option2' }
  4    ])

Examples

Create Middleware

1type ContextSystem = {
2    getPoints: () => number;
3    addPoint: (sum: number) => void;
4};
5function BotSystem(): Handler<Partial<ContextSystem> & ContextTG> {
6    let points = 0;
7    return (ctx, next) => {
8        ctx.addPoint = (sum) => {
9            points += sum;
10        };
11        ctx.getPoints = () => points;
12
13        return next();
14    };
15}

Use Middleware

1let bot = new BotolTg('<token>');
2let botSystem = bot.middleware(BotSystem());
3
4botSystem.on('callback_data', (ctx, next) => {
5    switch (ctx.callbackData) {
6        case 'show':
7            ctx.answerCbQuery(ctx.getPoints().toString());
8            return;
9        case 'add':
10            ctx.addPoint(1);
11            ctx.answerCbQuery();
12            return;
13        case 'sub':
14            ctx.addPoint(-1);
15            ctx.answerCbQuery();
16            return;
17    }
18    ctx.answerCbQuery();
19    return next();
20});
21botSystem.use((ctx) => {
22    ctx.reply(
23        `current points: ${ctx.getPoints()}`,
24        Markup.inlineKeyboard([
25            [
26                { text: 'add', callback_data: 'add' },
27                { text: 'sub', callback_data: 'sub' },
28            ],
29            [{ text: 'show', callback_data: 'show' }],
30        ]),
31    );
32});
33bot.startPolling();