mcordell/grape_token_auth

# frozen_string_literal: true
module GrapeTokenAuth
  class OmniAuthSuccessHTML < OmniAuthHTMLBase
    extend Forwardable

    SUCCESS_MESSAGE = 'deliverCredentials'

    def_delegators :oauth_resource, :resource, :persist_oauth_attributes!

    def initialize(oauth_resource, auth_hash, omniauth_params)
      @oauth_resource  = oauth_resource
      @auth_hash       = auth_hash
      @omniauth_params = omniauth_params
    end

    def self.build(resource_class, auth_hash, omniauth_params)
      oauth_resource = OmniAuthResource.fetch_or_create(resource_class,
                                                        auth_hash,
                                                        omniauth_params)
      new(oauth_resource, auth_hash, omniauth_params)
    end

    def auth_origin_url
      @omniauth_params['auth_origin_url'] || @omniauth_params[:auth_origin_url]
    end

    def window_type
      @omniauth_params['omniauth_window_type'] ||
        @omniauth_params[:omniauth_window_type]
    end

    def full_redirect_url
      "#{auth_origin_url}?#{auth_origin_query_params.to_query}"
    end

    def json_post_data
      success_attributes = { 'message' => SUCCESS_MESSAGE,
                             'config' => omniauth_params['config'] }
      oauth_resource.attributes.merge(success_attributes).to_json
    end

    private

    attr_reader :oauth_resource, :omniauth_params

    def config
      omniauth_params['config_name']
    end

    def auth_origin_query_params
      {
        auth_token: oauth_resource.token,
        client_id:  oauth_resource.client_id,
        uid:        oauth_resource.uid,
        expiry:     oauth_resource.expiry,
        config:     config
      }
    end
  end
end