SocialHamster lib contept

social_friendlists_controller.rb

# app/controllers/social_friendlists_controller.rb

def show
  frineds = SocialService.get_friends(user_id, params[:provider])
rescue SocialService::NoCredentialsError
  redirect_to auth_path(prams[:provider]) #to omniauth's /auth/facebook/
rescue SocialService::Error
  flash[:error] = "Cant access #{params[:provider].capitalize}. Try again later"
  redirect_to social_friendlists_path
end

social_hamster.rb

# lib/social_hamster.rb

class SocialHamster

  def self.connect(provider, credentials)
    provider.constantize.new(credentials)
  end

end


# lib/social_hamster/base_gateway.rb

class SocialHamster::BaseGateway
  def initialize(credentials)
  end

  def get_friends
  end

  def invite(uid)
  end

end

# lib/social_hamster/base_profile.rb

# Profile can be user to unify omniauth extra in application.

require "forwardable"

class SocialHamster::BaseProfile
  
  extend Forwardable
  def_delegator :@data, :first_name, :last_name, :birthday 
  def_delegator :@data, :uin, :email, :avatar_url, :profile_url

  def intialize(raw_profile)
    @data = OpenScruct.new(convert(raw_profile.with_indifferent_access))
  end

end


# lib/social_hamster/facebook/gateway.rb

class SocialHamster::Facebook::Gateway < SocialHamster::BaseGateway 
end

# lib/social_hamster/facebook/profile.rb

class SocialHamster::Facebook::Profile < SocialHamster::BaseProfile
  def convert(raw)
      {
        :gender => raw[:gender],
        :birthday => raw[:birthday].present? ? raw["birthday"].sub(/^(\d\d)\/(\d\d)\//, '\2.\1.') : nil
....
      }
  end
end

social_service.rb

# app/services/social_service.rb

class SocialService

  def self.get_friends(user_id, provider)
    auth = User.find(user_id).authentications.find_by_provider(provider)
    if auth.blank? || auth.credentials.blank?
      raise NoCredentialsError.new
    end

    connection = SocialHamster.connect(provider, auth.credentials)
    return connection.get_friends
  end

end