require 'spec_helper'

describe 'response' do
  include_context 'the api entities'

  before :all do
    module TheApi
      class ResponseApi < Grape::API
        format :json

        desc 'This returns something',
             params: Entities::UseResponse.documentation,
             failure: [{ code: 400, message: 'NotFound', model: Entities::ApiError }]
        post '/params_response' do
          { 'declared_params' => declared(params) }
        end

        desc 'This returns something',
             entity: Entities::UseResponse,
             failure: [{ code: 400, message: 'NotFound', model: Entities::ApiError }]
        get '/entity_response' do
          { 'declared_params' => declared(params) }
        end

        desc 'This returns something',
             entity: Entities::UseItemResponseAsType,
             failure: [{ code: 400, message: 'NotFound', model: Entities::ApiError }]
        get '/nested_type' do
          { 'declared_params' => declared(params) }
        end

        add_swagger_documentation
      end
    end
  end

  def app
    TheApi::ResponseApi
  end

  describe 'uses nested type as response object' do
    subject do
      get '/swagger_doc/nested_type'
      JSON.parse(last_response.body)
    end
    specify do
      expect(subject['paths']['/nested_type']['get']).to eql(
        'description' => 'This returns something',
        'produces' => ['application/json'],
        'responses' => {
          '200' => { 'description' => 'This returns something', 'schema' => { '$ref' => '#/definitions/UseItemResponseAsType' } },
          '400' => { 'description' => 'NotFound', 'schema' => { '$ref' => '#/definitions/ApiError' } }
        },
        'tags' => ['nested_type'],
        'operationId' => 'getNestedType')
      expect(subject['definitions']).to eql(
        'ResponseItem' => {
          'type' => 'object',
          'properties' => { 'id' => { 'type' => 'integer', 'format' => 'int32' }, 'name' => { 'type' => 'string' } }
        },
        'UseItemResponseAsType' => {
          'type' => 'object',
          'properties' => { 'description' => { 'type' => 'string' }, 'responses' => { '$ref' => '#/definitions/ResponseItem' } },
          'description' => 'This returns something'
        },
        'ApiError' => {
          'type' => 'object',
          'properties' => { 'code' => { 'type' => 'integer', 'format' => 'int32' }, 'message' => { 'type' => 'string' } },
          'description' => 'This returns something'
        })
    end
  end

  describe 'uses entity as response object' do
    subject do
      get '/swagger_doc/entity_response'
      JSON.parse(last_response.body)
    end

    specify do
      expect(subject['paths']['/entity_response']['get']).to eql(
        'description' => 'This returns something',
        'produces' => ['application/json'],
        'responses' => {
          '200' => { 'description' => 'This returns something', 'schema' => { '$ref' => '#/definitions/UseResponse' } },
          '400' => { 'description' => 'NotFound', 'schema' => { '$ref' => '#/definitions/ApiError' } }
        },
        'tags' => ['entity_response'],
        'operationId' => 'getEntityResponse')
      expect(subject['definitions']).to eql(
        'ResponseItem' => {
          'type' => 'object',
          'properties' => { 'id' => { 'type' => 'integer', 'format' => 'int32' }, 'name' => { 'type' => 'string' } }
        },
        'UseResponse' => {
          'type' => 'object',
          'properties' => { 'description' => { 'type' => 'string' }, '$responses' => { 'type' => 'array', 'items' => { '$ref' => '#/definitions/ResponseItem' } } },
          'description' => 'This returns something'
        },
        'ApiError' => {
          'type' => 'object',
          'properties' => { 'code' => { 'type' => 'integer', 'format' => 'int32' }, 'message' => { 'type' => 'string' } },
          'description' => 'This returns something'
        })
    end
  end

  describe 'uses params as response object' do
    subject do
      get '/swagger_doc/params_response'
      JSON.parse(last_response.body)
    end

    specify do
      expect(subject['paths']['/params_response']['post']).to eql(
        'description' => 'This returns something',
        'produces' => ['application/json'],
        'consumes' => ['application/json'],
        'parameters' => [
          { 'in' => 'formData', 'name' => 'description', 'type' => 'string', 'required' => false },
          { 'in' => 'formData', 'name' => '$responses', 'type' => 'array', 'items' => { 'type' => 'string' }, 'required' => false }
        ],
        'responses' => {
          '201' => { 'description' => 'This returns something' },
          '400' => { 'description' => 'NotFound', 'schema' => { '$ref' => '#/definitions/ApiError' } }
        },
        'tags' => ['params_response'],
        'operationId' => 'postParamsResponse')
      expect(subject['definitions']).to eql(
        'ApiError' => {
          'type' => 'object',
          'properties' => { 'code' => { 'type' => 'integer', 'format' => 'int32' }, 'message' => { 'type' => 'string' } },
          'description' => 'This returns something'
        })
    end
  end
end