telegram-bot-ruby

Ruby wrapper for Telegram's Bot API.

Installation

Add following line to your Gemfile:

gem 'telegram-bot-ruby'

And then execute:

$ bundle

Or install it system-wide:

$ gem install telegram-bot-ruby

Usage

First things first, you need to obtain a token for your bot. Then create your Telegram bot like this:

require 'telegram/bot'

token = 'YOUR_TELEGRAM_BOT_API_TOKEN'

Telegram::Bot::Client.run(token) do |bot|
  bot.listen do |message|
    case message.text
    when '/start'
      bot.api.sendMessage(chat_id: message.chat.id, text: "Hello, #{message.from.username}")
    when '/stop'
      bot.api.sendMessage(chat_id: message.chat.id, text: "Bye, #{message.from.username}")
    end
  end
end

Note that bot.api object implements Telegram Bot API methods as is. So you can invoke any method inside the block without any problems.

Same thing about message object - it implements Message spec, so you always know what to expect from it.

Custom keyboards

You can use your own custom keyboards. Here is an example:

bot.listen do |message|
  case message.text
  when '/start'
    question = 'London is a capital of which country?'
    # See more: https://core.telegram.org/bots/api#replykeyboardmarkup
    answers =
      Telegram::Bot::Types::ReplyKeyboardMarkup
      .new(keyboard: [%w(A B), %w(C D)], one_time_keyboard: true)
    bot.api.sendMessage(chat_id: message.chat.id, text: question, reply_markup: answers)
  when '/stop'
    # See more: https://core.telegram.org/bots/api#replykeyboardhide
    kb = Telegram::Bot::Types::ReplyKeyboardHide.new(hide_keyboard: true)
    bot.api.sendMessage(chat_id: message.chat.id, text: 'Sorry to see you go :(', reply_markup: kb)
  end
end

File upload

Your bot can even upload files (photos, audio, documents, stickers, video) to Telegram servers. Just like this:

bot.listen do |message|
  case message.text
  when '/photo'
    bot.api.sendPhoto(chat_id: message.chat.id, photo: File.new('~/Desktop/jennifer.jpg'))
  end
end

Contributing

1. Fork it
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create new Pull Request