kaiwren/wrest

# frozen_string_literal: true

require 'yaml'

class FacebookClient
  Config = YAML.load_file(File.expand_path('../../config/facebook.yml', __dir__))

  def authorization_uri(redirect_uri, options = {})
    request_params = {
      client_id: Config['client_id'],
      redirect_uri: redirect_uri
    }.merge(options)
    "#{base_url['/oauth/authorize'].uri_string}?#{Wrest::Utils.hash_to_param(request_params)}"
  end

  def acquire_access_token(redirect_uri, auth_code)
    request_params = {
      client_id: Config['client_id'],
      redirect_uri: redirect_uri,
      client_secret: Config['client_secret'],
      code: auth_code
    }
    response = base_url['/oauth/access_token'].post_form(request_params).body
    params = Rack::Utils.parse_query(response)
    params['access_token']
  end

  def authorized_get(path, access_token)
    base_url[path].get(access_token: access_token)
  end

  def base_url
    Config['facebook_uri'].to_uri
  end
end