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README.hbs
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[](https://travis-ci.org/yagop/node-telegram-bot-api) [](https://ci.appveyor.com/project/yagop/node-telegram-bot-api/branch/master) [](https://coveralls.io/r/yagop/node-telegram-bot-api?branch=master) [](https://www.bithound.io/github/yagop/node-telegram-bot-api) [](https://telegram.me/node_telegram_bot_api) [](https://telegram.me/Yago_Perez)
Node.js module to interact with official [Telegram Bot API](https://core.telegram.org/bots/api). A bot token is needed, to obtain one, talk to [@botfather](https://telegram.me/BotFather) and create a new bot.
```sh
npm install node-telegram-bot-api
```
```js
var TelegramBot = require('node-telegram-bot-api');
var token = 'YOUR_TELEGRAM_BOT_TOKEN';
// Setup polling way
var bot = new TelegramBot(token, {polling: true});
// Matches /echo [whatever]
bot.onText(/\/echo (.+)/, function (msg, match) {
var fromId = msg.from.id;
var resp = match[1];
bot.sendMessage(fromId, resp);
});
// Any kind of message
bot.on('message', function (msg) {
var chatId = msg.chat.id;
// photo can be: a file path, a stream or a Telegram file_id
var photo = 'cats.png';
bot.sendPhoto(chatId, photo, {caption: 'Lovely kittens'});
});
```
There are some other examples on [examples](https://github.com/yagop/node-telegram-bot-api/tree/master/examples).
### Events
Every time TelegramBot receives a message, it emits a `message`. Depending on which [message](https://core.telegram.org/bots/api#message) was received, emits an event from this ones: `text`, `audio`, `document`, `photo`, `sticker`, `video`, `voice`, `contact`, `location`, `new_chat_participant`, `left_chat_participant`, `new_chat_title`, `new_chat_photo`, `delete_chat_photo`, `group_chat_created`. Its much better to listen a specific event rather than a `message` in order to stay safe from the content.
TelegramBot emits `inline_query` when receives an [Inline Query](https://core.telegram.org/bots/api#inlinequery) and `chosen_inline_result` when receives a [ChosenInlineResult](https://core.telegram.org/bots/api#choseninlineresult). Bot must be enabled on [inline mode](https://core.telegram.org/bots/api#inline-mode)
* * *
### WebHooks
Telegram only supports HTTPS connections to WebHooks, in order to set a WebHook a private key file and public certificate must be used. Since August 29, 2015 Telegram supports self signed ones, to generate them:
```bash
# Our private cert will be key.pem, keep in private this file.
openssl genrsa -out key.pem 2048
# Our public certificate will be crt.pem
openssl req -new -sha256 -key key.pem -out crt.pem
```
Once they are generated, the `crt.pem` can be provided to `telegramBot.setWebHook(url, crt)` as `crt`.
## API Reference
{{#class name="TelegramBot"~}}
{{>header~}}
{{>body~}}
{{>member-index~}}
{{>members~}}
{{/class}}
* * *