require 'api-tester/util/response_evaluator.rb'

module ApiTester
  class MethodCaseTest
      attr_accessor :expected_response
      attr_accessor :payload
      attr_accessor :response
      attr_accessor :reports
      attr_accessor :url
      attr_accessor :module_name

      def initialize response, payload, expected_response, url, verb, module_name
          self.payload = payload
          self.response = response
          self.expected_response = expected_response
          self.reports = []
          self.url = "#{verb} #{url}"
          self.module_name = module_name
      end

      def response_code_report
          report = StatusCodeReport.new "#{module_name} - Incorrect response code", self.url, self.payload, self.expected_response.code, self.response.code
          self.reports << report
          nil
      end

      def missing_field_report field
          report = Report.new "#{module_name} - Missing field #{field}", self.url, self.payload, self.expected_response, self.response
          self.reports << report
          nil
      end

      def extra_field_report field
          report = Report.new "#{module_name} - Found extra field #{field}", self.url, self.payload, self.expected_response, self.response
          self.reports << report
          nil
      end

      def check
          if check_response_code
              evaluator = ApiTester::ResponseEvaluator.new json_parse(self.response.body), self.expected_response
              evaluator.missing_fields.map{|field| missing_field_report(field)}
              evaluator.extra_fields.map{|field| extra_field_report(field)}
              increment_fields evaluator.seen_fields
          end
          return self.reports
      end

      def check_response_code
          if response.code != expected_response.code
              response_code_report
              return false
          end
          return true
      end

      def increment_fields seen_fields
          seen_fields.each do |field|
              field.seen
          end
      end

      def json_parse body
          JSON.parse!(body)
        rescue JSON::ParserError
          body
      end
  end
end