module JsonapiSpecHelpers

# File lib/jsonapi_spec_helpers.rb, line 9
def self.included(klass)
  # don't load RSpec until included
  require 'jsonapi_spec_helpers/matchers'
  klass.send(:include, Helpers)
  if defined?(Rails)
    load_payloads!
  end
end

# File lib/jsonapi_spec_helpers.rb, line 18
def self.load_payloads!
  Dir[Rails.root.join('spec/payloads/**/*.rb')].each { |f| require f }
end

# File lib/jsonapi_spec_helpers.rb, line 22
def assert_payload(name, record, json, &blk)
  unless payload = JsonapiSpecHelpers::Payload.registry[name]
    raise "No payloads registered for '#{name}'"
  end

  if blk
    payload = payload.fork
    payload.instance_eval(&blk)
  end

  aggregate_failures "payload has correct key/values" do
    payload.keys.each_pair do |attribute, options|
      prc = options[:proc]
      if (expect(json).to have_payload_key(attribute, options[:allow_nil])) == true
        unless options[:allow_nil]
          output = instance_exec(record, &prc)
          expect(json[attribute.to_s]).to match_payload(attribute, output)

          if options[:type]
            expect(json[attribute.to_s]).to match_type(attribute, options[:type])
          end
        end
      end
    end

    payload.no_keys.each do |no_key|
      expect(json).to_not have_payload_key(no_key, {})
    end

    unexpected_keys = json.keys - payload.keys.keys.map(&:to_s)
    unexpected_keys.reject! { |k| %w(id jsonapi_type).include?(k) }
    unexpected_keys.each do |key|
      expect(key).to be_not_in_payload
    end
  end
end