quick and dirty twitter api v 1.1

twitter.rb

class Twitter 
  require 'uri'
  require 'base64'
  require 'open-uri'
  require 'net/http'
  
  def self.tweets count = 7
    begin
      data = self.parse(`curl -s -H "#{authorization("Bearer", access_token)}" "https://api.twitter.com/1.1/statuses/user_timeline.json?count=#{count}&screen_name=TEST&exclude_replies=true"`)
    rescue
      data = []
    end
    self.to_json(data)
  end

  def self.access_token
    token = escape("TOKEN")
    token_secret = escape("SECRET")
    encoded = self.encode([token, token_secret])
    response = self.parse(`curl -s -d "#{self.body}" -H "#{self.authorization("Basic", encoded)}" -H "#{self.content_type}" "https://api.twitter.com/oauth2/token"`)
    response["access_token"]
  end

  def self.body
    "grant_type=client_credentials"
  end

  def self.content_type
    "Content-Type: application/x-www-form-urlencoded;charset=UTF-8"
  end

  def self.authorization type, key
    "Authorization: #{type} #{key}"
  end

  private
  def self.escape str
    URI.escape(str)
  end

  def self.encode arr, sep = ":"
    # not sure why, but the encoded token is two lines, join the two 
    # lines so the request goes through
    Base64.encode64(arr.join(':')).split("\n").join('')
  end

  def self.parse str
    begin
      ActiveSupport::JSON.decode(str)
    rescue
    end
  end
  
  def self.to_json str
    begin
      ActiveSupport::JSON.encode(str)
    rescue
    end
  end
end