fab-manager/lib/omni_auth/strategies/sso_oauth2_provider.rb

# frozen_string_literal: true

require 'omniauth-oauth2'
require 'jsonpath'
require 'sso_logger'
require_relative '../data_mapping/mapper'

module OmniAuth::Strategies
  # Authentication strategy provided trough oAuth 2.0
  class SsoOauth2Provider < OmniAuth::Strategies::OAuth2
    include OmniAuth::DataMapping::Mapper

    def self.active_provider
      active_provider = AuthProvider.active
      if active_provider.providable_type != OAuth2Provider.name
        raise "Trying to instantiate the wrong provider: Expected OAuth2Provider, received #{active_provider.providable_type}"
      end

      active_provider
    end

    # Strategy name.
    option :name, active_provider.strategy_name


    option :client_options,
           site: active_provider.providable.base_url,
           authorize_url: active_provider.providable.authorization_endpoint,
           token_url: active_provider.providable.token_endpoint

    def authorize_params
      super.tap do |params|
        params[:scope] = OmniAuth::Strategies::SsoOauth2Provider.active_provider.providable.scopes
      end
    end

    def callback_url
      url = Rails.application.config.action_controller.default_url_options
      "#{url[:protocol]}://#{url[:host]}#{script_name}#{callback_path}"
    end

    uid { parsed_info['user.uid'.to_sym] }

    info do
      {
        mapping: parsed_info
      }
    end

    extra do
      {
        raw_info: raw_info
      }
    end

    # retrieve data from various url, querying each only once
    def raw_info
      logger = SsoLogger.new

      @raw_info ||= {}
      logger.debug "[raw_info] @raw_infos = #{@raw_info&.to_json}"
      unless @raw_info.size.positive?
        OmniAuth::Strategies::SsoOauth2Provider.active_provider.auth_provider_mappings.each do |mapping|
          logger.debug "mapping = #{mapping&.to_json}"
          next if @raw_info.key?(mapping.api_endpoint.to_sym)

          logger.debug "api_endpoint = #{mapping.api_endpoint.to_sym}"
          logger.debug "access_token = #{access_token&.to_json}"
          logger.debug "token get = #{access_token.get(mapping.api_endpoint)}"
          logger.debug "parsed = #{access_token.get(mapping.api_endpoint).parsed}"
          @raw_info[mapping.api_endpoint.to_sym] = access_token.get(mapping.api_endpoint).parsed
        end
      end
      @raw_info
    end

    def parsed_info
      mapped_info(OmniAuth::Strategies::SsoOauth2Provider.active_provider.auth_provider_mappings, raw_info)
    end
  end
end