# tg-bot
> A simple Telegram Bot gem for Ruby on Rails

# Usage
1. Setup your ENV
    - Use bash to set environment variable
    ```bash
    export telegram_bot_token='Your bot token'
    ```
    - Use [figaro](https://github.com/laserlemon/figaro) gem to set environment variable
    ```yaml
    telegram_bot_token: Your bot token
    ```
2. Add this gem to your `Gemfile`
    ```ruby
    gem 'tg-bot', '~> 0.0.2'
    ```
3. Setup your Controller 
    > e.g. my webhook is https://xxxxx/telegram
    ```ruby
    def telegram
      telegram = Telegram::Bot.new(params)
    end
    ```

4. It has 3 ways to reply message  
    ```ruby
    def telegram
      telegram = Telegram::Bot.new(params)

      # 1. reply text message
      telegram.send_message(text: 'enter what you want to reply')

      # 2. reply forward_message
      telegram.forward_message( chat_id: 'The chatroom you want to reply',
                                from_chat_id: 'The chatroom you want to forward', 
                                message_id: 'The message you want to forward')
      
      # 3. reply photo by file or string
      telegram.send_photo(photo: "https://picsum.photos/200/300/?random=#{Random.new_seed}")
    end
    ```

# Methods
## setWebhook
```ruby
def xxx
  Telegram::Bot.SetWebhook(url)
end
```