require 'omniauth/oauth'
require 'multi_json'

module OmniAuth
  module Strategies
    class Doit < OmniAuth::Strategies::OAuth2
      def initialize(app, client_id=nil, client_secret=nil, options={}, &block)
        client_options = {
          :authorize_url => 'https://openapi.doit.im/oauth/authorize',
          :token_url => 'https://openapi.doit.im/oauth/access_token',
        }
        super(app, :doit, client_id, client_secret, client_options, options, &block)
      end

      def auth_hash
        OmniAuth::Utils.deep_merge(
          super, {
            'uid' => user_data['id'],
            'user_info' => user_info,
            'extra' => {
              'user_hash' => user_data,
            },
          }
        )
      end

      def user_data
        @data ||= MultiJson.decode(@access_token.get('https://openapi.doit.im/v1/settings'), {'Authorization' => 'OAuth' + @access_token.token})
      end

      def request_phase
        options[:response_type] ||= 'code'
        super
      end

      def callback_phase
        options[:grant_type] ||= 'authorization_code'
        super
      end

      def user_info
        {
          'account' => user_data['account'],
          'username'=> user_data['username'],
          'nickname'=> user_data['nickname'],
          'gender'=> user_data['gender'],
          'week_start'=> user_data['week_start'],
          'birthday_day'=> user_data['birthday_day'],
          'birthday_month'=> user_data['birthday_month'],
          'birthday_year'=> user_data['birthday_year'],
          'language'=> user_data['language'],
          'user_timezone'=> user_data['user_timezone'],
          'remind_email'=> user_data['remind_email'],
          'created'=> user_data['created'],
          'updated'=> user_data['updated'],
        }
      end
    end
  end
end