require "pact_broker/api/resources/base_resource"
require "pact_broker/services"
require "pact_broker/api/decorators/webhook_decorator"
require "pact_broker/api/resources/webhook_resource_methods"

module PactBroker
  module Api
    module Resources
      class Webhook < BaseResource

        include WebhookResourceMethods

        def content_types_accepted
          [["application/json", :from_json]]
        end

        def content_types_provided
          [["application/hal+json", :to_json]]
        end

        def allowed_methods
          ["GET", "PUT", "DELETE", "OPTIONS"]
        end

        def put_can_create?
          true
        end

        def resource_exists?
          !!webhook
        end

        def malformed_request?
          super || (request.put? && webhook_validation_errors?(parsed_webhook, uuid))
        end

        def from_json
          if webhook
            @webhook = webhook_service.update_by_uuid(uuid, params(symbolize_names: false))
            response.body = to_json
          else
            @webhook = webhook_service.create(uuid, parsed_webhook, consumer, provider)
            response.body = to_json
            201
          end
        end

        def to_json
          decorator_class(:webhook_decorator).new(webhook).to_json(decorator_options)
        end

        def delete_resource
          webhook_service.delete_by_uuid uuid
          true
        end

        def policy_name
          :'webhooks::webhook'
        end

        def action
          if request.put?
            webhook ? :update : :create
          else
            super
          end
        end

        def policy_record
          webhook || parsed_webhook
        end

        private

        def webhook
          @webhook ||= webhook_service.find_by_uuid uuid
        end

        def parsed_webhook
          @parsed_webhook ||= decorator_class(:webhook_decorator).new(PactBroker::Domain::Webhook.new).from_json(request_body)
        end

        def uuid
          identifier_from_path[:uuid]
        end
      end
    end
  end
end