Telegram API

As we know that Telegram is a messaging app identifies users by their mobile number. Fortunately, Telegram has its own API -Ruby has a wrapper gem for Telegram's Bot API called telegram-bot-ruby - which allows you to Integrate with other services, create custom tools, build single- and multiplayer games, build social services, do virtually anything else; Do you smell anything evil here?

• Install telegram-bot gem

  gem install telegram-bot-ruby
  

• Basic usage

As many APIs, you have to get a token to deal with your bot. Here a basic usage

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.send_message(chat_id: message.chat.id, text: "Hello, #{message.from.first_name}")
    when '/stop'
      bot.api.send_message(chat_id: message.chat.id, text: "Bye, #{message.from.first_name}")
    when '/rubyfu'
      bot.api.send_message(chat_id: message.chat.id, text: "Rubyfu, where Ruby goes eveil!")
    end
  end
end

Once your run it, go to your telegram and find the bot and start chat with /start, try to send /rubyfu.

• Inline bots

If you got that evil smile from above example, you may thinking about interacting with your bots inline to call/@mention your bots and request more action from the bot(s).

require 'telegram/bot'

bot.listen do |message|
  case message
  when Telegram::Bot::Types::InlineQuery
    results = [
      Telegram::Bot::Types::InlineQueryResultArticle
        .new(id: 1, title: 'First article', message_text: 'Very interesting text goes here.'),
      Telegram::Bot::Types::InlineQueryResultArticle
        .new(id: 2, title: 'Second article', message_text: 'Another interesting text here.')
    ]
    bot.api.answer_inline_query(inline_query_id: message.id, results: results)
  when Telegram::Bot::Types::Message
    bot.api.send_message(chat_id: message.chat.id, text: "Hello, #{message.from.first_name}!")
  end
end

Resources

• A good topic about Quickly Create a Telegram Bot in Ruby can be found here.
• There are more usage and documentation for the gem and the API, and you can show us your evil code, and you can pull it in Rubyfu!
• Bot Revolution. Know your API or die hard.