#-- copyright
# OpenProject is a project management system.
# Copyright (C) 2012-2015 the OpenProject Foundation (OPF)
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License version 3.
#
# OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows:
# Copyright (C) 2006-2013 Jean-Philippe Lang
# Copyright (C) 2010-2013 the ChiliProject Team
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
#
# See doc/COPYRIGHT.rdoc for more details.
#++

require 'spec_helper'
require 'rack/test'

describe 'API v3 Work package resource', type: :request do
  include Rack::Test::Methods
  include Capybara::RSpecMatchers
  include API::V3::Utilities::PathHelper

  let(:closed_status) { FactoryGirl.create(:closed_status) }

  let(:work_package) {
    FactoryGirl.create(:work_package, project_id: project.id,
                                      description: 'lorem ipsum'
                      )
  }
  let(:project) do
    FactoryGirl.create(:project, identifier: 'test_project', is_public: false)
  end
  let(:role) { FactoryGirl.create(:role, permissions: permissions) }
  let(:permissions) { [:view_work_packages, :view_timelines, :edit_work_packages] }
  let(:current_user) do
    user = FactoryGirl.create(:user, member_in_project: project, member_through_role: role)

    FactoryGirl.create(:user_preference, user: user, others: { no_self_notified: false })

    user
  end
  let(:watcher) do
    FactoryGirl
      .create(:user,  member_in_project: project, member_through_role: role)
      .tap do |user|
        work_package.add_watcher(user)
      end
  end
  let(:unauthorize_user) { FactoryGirl.create(:user) }
  let(:type) { FactoryGirl.create(:type) }

  before do
    allow(User).to receive(:current).and_return current_user

    # some way some of these specs rely on this setting being disabled
    # so we set it excplicitly as a precondition
    Setting.cross_project_work_package_relations = 0
  end

  describe '#get list' do
    subject { last_response }

    before(:each) do
      work_package.save!
      get api_v3_paths.work_packages
    end

    it 'succeeds' do
      expect(subject.status).to eql 200
    end

    it 'returns visible work packages' do
      FactoryGirl.create(:work_package, project: project)
      expect(subject.body).to be_json_eql(1.to_json).at_path('total')
    end

    context 'user not seeing any work packages' do
      let(:current_user) { FactoryGirl.create(:user) }
      let(:non_member_permissions) { [:view_work_packages] }

      around do |example|
        non_member = Role.non_member
        previous_permissions = non_member.permissions

        non_member.update_attribute(:permissions, non_member_permissions)
        example.run
        non_member.update_attribute(:permissions, previous_permissions)
      end

      it 'succeeds' do
        expect(subject.status).to eql 200
      end

      it 'returns no work packages' do
        FactoryGirl.create(:work_package, project: project)
        expect(subject.body).to be_json_eql(0.to_json).at_path('total')
      end

      context 'because he is not allowed to see work packages in general' do
        let(:non_member_permissions) { [] }

        it_behaves_like 'unauthorized access'
      end
    end
  end

  describe '#get' do
    let(:get_path) { api_v3_paths.work_package work_package.id }

    context 'when acting as a user with permission to view work package' do
      before(:each) do
        allow(User).to receive(:current).and_return current_user
        get get_path
      end

      it 'should respond with 200' do
        expect(last_response.status).to eq(200)
      end

      describe 'response body' do
        subject(:parsed_response) { JSON.parse(last_response.body) }
        let!(:timeline)    { FactoryGirl.create(:timeline,     project_id: project.id) }
        let!(:other_wp)    {
          FactoryGirl.create(:work_package, project_id: project.id,
                                            status: closed_status)
        }
        let(:work_package) {
          FactoryGirl.create(:work_package, project_id: project.id,
                                            description: description
                            )
        }
        let(:description) {
          %{
      {{>toc}}

      h1. OpenProject Masterplan for 2015

      h2. three point plan

      # One ###{other_wp.id}
      # Two
      # Three

      h3. random thoughts

      h4. things we like

      * Pointed
      * Relaxed
      * Debonaire

      {{timeline(#{timeline.id})}}
        }}

        it 'should respond with work package in HAL+JSON format' do
          expect(parsed_response['id']).to eq(work_package.id)
        end

        describe "['description']" do
          subject { super()['description'] }
          it { is_expected.to have_selector('h1') }
        end

        describe "['description']" do
          subject { super()['description'] }
          it { is_expected.to have_selector('h2') }
        end

        it 'should resolve links' do
          expect(parsed_response['description']['html'])
            .to have_selector("a[href='/work_packages/#{other_wp.id}']")
        end

        it 'should resolve simple macros' do
          expect(parsed_response['description']).to have_text('Table of Contents')
        end

        it 'should not resolve/show complex macros' do
          expect(parsed_response['description'])
            .to have_text('Macro timeline cannot be displayed.')
        end
      end

      context 'requesting nonexistent work package' do
        let(:get_path) { api_v3_paths.work_package 909090 }

        it_behaves_like 'not found'
      end
    end

    context 'when acting as an user without permission to view work package' do
      before(:each) do
        allow(User).to receive(:current).and_return unauthorize_user
        get get_path
      end

      it_behaves_like 'not found'
    end

    context 'when acting as an anonymous user' do
      before(:each) do
        allow(User).to receive(:current).and_return User.anonymous
        get get_path
      end

      it_behaves_like 'not found'
    end
  end

  describe '#patch' do
    let(:patch_path) { api_v3_paths.work_package work_package.id }
    let(:valid_params) do
      {
        _type: 'WorkPackage',
        lockVersion: work_package.lock_version
      }
    end

    subject(:response) { last_response }

    shared_context 'patch request' do
      before(:each) do
        allow(User).to receive(:current).and_return current_user
        patch patch_path, params.to_json, 'CONTENT_TYPE' => 'application/json'
      end
    end

    context 'user without needed permissions' do
      context 'no permission to see the work package' do
        let(:work_package) { FactoryGirl.create(:work_package) }
        let(:current_user) { FactoryGirl.create :user }
        let(:params) { valid_params }

        include_context 'patch request'

        it_behaves_like 'not found'
      end

      context 'no permission to edit the work package' do
        let(:role) { FactoryGirl.create(:role, permissions: [:view_work_packages]) }
        let(:current_user) {
          FactoryGirl.create(:user,
                             member_in_project: work_package.project,
                             member_through_role: role)
        }
        let(:params) { valid_params }

        include_context 'patch request'

        it_behaves_like 'unauthorized access'
      end
    end

    context 'user with needed permissions' do
      shared_examples_for 'lock version updated' do
        it {
          expect(subject.body).to be_json_eql(work_package.reload.lock_version)
            .at_path('lockVersion')
        }
      end

      describe 'notification' do
        let(:update_params) { valid_params.merge(subject: 'Updated subject') }

        before(:each) do
          allow(User).to receive(:current).and_return current_user
          work_package
          ActionMailer::Base.deliveries.clear # throw away mails due to work package creation
        end

        include_context 'patch request'

        subject { ActionMailer::Base.deliveries }

        context 'not set' do
          let(:params) { update_params }

          it { expect(subject.count).to eq(1) }
        end

        context 'disabled' do
          let(:patch_path) { "#{api_v3_paths.work_package work_package.id}?notify=false" }
          let(:params) { update_params }

          it { expect(subject).to be_empty }
        end

        context 'enabled' do
          let(:patch_path) { "#{api_v3_paths.work_package work_package.id}?notify=Something" }
          let(:params) { update_params }

          it { expect(subject.count).to eq(1) }
        end
      end

      context 'parent id' do
        let(:parent) { FactoryGirl.create(:work_package, project: work_package.project) }
        let(:params) { valid_params.merge(parentId: parent.id) }

        before do
          allow(Setting).to receive(:cross_project_work_package_relations?).and_return(true)
        end

        context 'w/o permission' do
          include_context 'patch request'

          it { expect(response.status).to eq(403) }
        end

        context 'with permission' do
          before do role.add_permission!(:manage_subtasks) end

          include_context 'patch request'

          context 'invalid parent' do
            let(:params) { valid_params.merge(parentId: '-123') }

            it { expect(WorkPackage.visible(current_user).exists?('-123')).to be_falsey }

            it { expect(response.status).to eq(422) }
          end

          context 'empty id' do
            let(:params) { valid_params.merge(parentId: nil) }

            it { expect(response.status).to eq(200) }

            it { expect(subject.body).not_to have_json_path('parentId') }

            it_behaves_like 'lock version updated'
          end

          context 'valid id' do
            let(:params) { valid_params.merge(parentId: parent.id) }

            it { expect(response.status).to eq(200) }

            it { expect(subject.body).to be_json_eql(parent.id.to_json).at_path('parentId') }

            it_behaves_like 'lock version updated'
          end
        end
      end

      context 'subject' do
        let(:params) { valid_params.merge(subject: 'Updated subject') }

        include_context 'patch request'

        it { expect(response.status).to eq(200) }

        it 'should respond with updated work package subject' do
          expect(subject.body).to be_json_eql('Updated subject'.to_json).at_path('subject')
        end

        it_behaves_like 'lock version updated'
      end

      context 'description' do
        shared_examples_for 'description updated' do
          it_behaves_like 'API V3 formattable', 'description' do
            let(:format) { 'textile' }

            subject { response.body }
          end

          it_behaves_like 'lock version updated'
        end

        context 'w/o value (empty)' do
          let(:raw) { nil }
          let(:html) { '' }
          let(:params) { valid_params.merge(description: { raw: nil }) }

          include_context 'patch request'

          it { expect(response.status).to eq(200) }

          it_behaves_like 'description updated'
        end

        context 'with value' do
          let(:raw) { '*Some text* _describing_ *something*...' }
          let(:html) {
            '<p><strong>Some text</strong> <em>describing</em> <strong>something</strong>...</p>'
          }
          let(:params) { valid_params.merge(description: { raw: raw }) }

          include_context 'patch request'

          it { expect(response.status).to eq(200) }

          it_behaves_like 'description updated'
        end
      end

      context 'start date' do
        let(:dateString) { Date.today.to_date.iso8601 }
        let(:params) { valid_params.merge(startDate: dateString) }

        include_context 'patch request'

        it { expect(response.status).to eq(200) }

        it 'should respond with updated start date' do
          expect(subject.body).to be_json_eql(dateString.to_json).at_path('startDate')
        end

        it_behaves_like 'lock version updated'
      end

      context 'due date' do
        let(:dateString) { Date.today.to_date.iso8601 }
        let(:params) { valid_params.merge(dueDate: dateString) }

        include_context 'patch request'

        it { expect(response.status).to eq(200) }

        it 'should respond with updated due date' do
          expect(subject.body).to be_json_eql(dateString.to_json).at_path('dueDate')
        end

        it_behaves_like 'lock version updated'
      end

      context 'status' do
        let(:target_status) { FactoryGirl.create(:status) }
        let(:status_link) { api_v3_paths.status target_status.id }
        let(:status_parameter) { { _links: { status: { href: status_link } } } }
        let(:params) { valid_params.merge(status_parameter) }

        before do allow(User).to receive(:current).and_return current_user end

        context 'valid status' do
          let!(:workflow) {
            FactoryGirl.create(:workflow,
                               type_id: work_package.type.id,
                               old_status: work_package.status,
                               new_status: target_status,
                               role: current_user.memberships[0].roles[0])
          }

          include_context 'patch request'

          it { expect(response.status).to eq(200) }

          it 'should respond with updated work package status' do
            expect(subject.body).to be_json_eql(target_status.name.to_json)
              .at_path('_embedded/status/name')
          end

          it_behaves_like 'lock version updated'
        end

        context 'invalid status' do
          include_context 'patch request'

          it_behaves_like 'constraint violation' do
            let(:message) {
              'Status ' + I18n.t('activerecord.errors.models.' \
                          'work_package.attributes.status_id.status_transition_invalid')
            }
          end
        end

        context 'wrong resource' do
          let(:status_link) { api_v3_paths.user current_user.id }

          include_context 'patch request'

          it_behaves_like 'invalid resource link' do
            let(:message) {
              I18n.t('api_v3.errors.invalid_resource',
                     property: 'status',
                     expected: '/api/v3/statuses/:id',
                     actual: status_link)
            }
          end
        end
      end

      context 'type' do
        let(:target_type) { FactoryGirl.create(:type) }
        let(:type_link) { api_v3_paths.type target_type.id }
        let(:type_parameter) { { _links: { type: { href: type_link } } } }
        let(:params) { valid_params.merge(type_parameter) }

        before do allow(User).to receive(:current).and_return current_user end

        context 'valid type' do
          before do
            project.types << target_type
          end

          include_context 'patch request'

          it { expect(response.status).to eq(200) }

          it 'should respond with updated work package type' do
            expect(subject.body).to be_json_eql(target_type.name.to_json)
              .at_path('_embedded/type/name')
          end

          it_behaves_like 'lock version updated'
        end

        context 'valid type changing custom fields' do
          let(:custom_field) { FactoryGirl.create(:work_package_custom_field) }
          let(:custom_field_parameter) { { :"customField#{custom_field.id}" => true } }
          let(:params) { valid_params.merge(type_parameter).merge(custom_field_parameter) }

          before do
            project.types << target_type
            project.work_package_custom_fields << custom_field
            target_type.custom_fields << custom_field
          end

          include_context 'patch request'

          it 'responds with the new custom field having the desired value' do
            expect(subject.body)
              .to be_json_eql(true.to_json)
              .at_path("customField#{custom_field.id}")
          end
        end

        context 'invalid type' do
          include_context 'patch request'

          it_behaves_like 'constraint violation' do
            let(:message) { "Type #{I18n.t('activerecord.errors.messages.inclusion')}" }
          end
        end

        context 'wrong resource' do
          let(:type_link) { api_v3_paths.user current_user.id }

          include_context 'patch request'

          it_behaves_like 'invalid resource link' do
            let(:message) {
              I18n.t('api_v3.errors.invalid_resource',
                     property: 'type',
                     expected: '/api/v3/types/:id',
                     actual: type_link)
            }
          end
        end
      end

      context 'project' do
        let(:target_project) do
          FactoryGirl.create(:project, is_public: false)
        end
        let(:project_link) { api_v3_paths.project target_project.id }
        let(:project_parameter) { { _links: { project: { href: project_link } } } }
        let(:params) { valid_params.merge(project_parameter) }

        before do
          FactoryGirl.create :member,
                             user: current_user,
                             project: target_project,
                             roles: [FactoryGirl.create(:role, permissions: [:move_work_packages])]

          allow(User).to receive(:current).and_return current_user
        end

        context 'is changed' do
          include_context 'patch request'

          it 'is successful' do
            expect(response.status).to eq(200)
          end

          it_behaves_like 'lock version updated'

          it 'responds with the project changed' do
            href = {
              href: project_link,
              title: target_project.name
            }
            expect(response.body).to be_json_eql(href.to_json).at_path('_links/project')
          end
        end

        context 'with a custom field defined on the target project' do
          let(:custom_field) { FactoryGirl.create(:work_package_custom_field) }
          let(:custom_field_parameter) { { :"customField#{custom_field.id}" => true } }
          let(:params) { valid_params.merge(project_parameter).merge(custom_field_parameter) }

          before do
            target_project.work_package_custom_fields << custom_field
            work_package.type.custom_fields << custom_field
          end

          include_context 'patch request'

          it 'responds with the new custom field having the desired value' do
            expect(subject.body)
              .to be_json_eql(true.to_json)
              .at_path("customField#{custom_field.id}")
          end
        end
      end

      context 'assignee and responsible' do
        let(:user) { FactoryGirl.create(:user, member_in_project: project) }
        let(:params) { valid_params.merge(user_parameter) }
        let(:work_package) {
          FactoryGirl.create(:work_package,
                             project: project,
                             assigned_to: current_user,
                             responsible: current_user)
        }

        before do allow(User).to receive(:current).and_return current_user end

        shared_context 'setup group membership' do |group_assignment|
          let(:group) { FactoryGirl.create(:group) }
          let(:group_role) { FactoryGirl.create(:role) }
          let(:group_member) {
            FactoryGirl.create(:member,
                               principal: group,
                               project: project,
                               roles: [group_role])
          }

          before do
            allow(Setting).to receive(:work_package_group_assignment?).and_return(group_assignment)

            group_member
          end
        end

        shared_examples_for 'handling people' do |property|
          let(:user_parameter) { { _links: { property => { href: user_href } } } }
          let(:href_path) { "_links/#{property}/href" }

          describe 'nil' do
            let(:user_href) { nil }

            include_context 'patch request'

            it { expect(response.status).to eq(200) }

            it { expect(response.body).to be_json_eql(nil.to_json).at_path(href_path) }

            it_behaves_like 'lock version updated'
          end

          describe 'valid' do
            shared_examples_for 'valid user assignment' do
              let(:title) { "#{assigned_user.name}".to_json }

              it { expect(response.status).to eq(200) }

              it {
                expect(response.body).to be_json_eql(title)
                  .at_path("_links/#{property}/title")
              }

              it_behaves_like 'lock version updated'
            end

            context 'user' do
              let(:user_href) { api_v3_paths.user user.id }

              include_context 'patch request'

              it_behaves_like 'valid user assignment' do
                let(:assigned_user) { user }
              end
            end

            context 'group' do
              let(:user_href) { api_v3_paths.user group.id }

              include_context 'setup group membership', true
              include_context 'patch request'

              it_behaves_like 'valid user assignment' do
                let(:assigned_user) { group }
              end
            end
          end

          describe 'invalid' do
            include_context 'patch request'

            context 'user doesn\'t exist' do
              let(:user_href) { api_v3_paths.user 909090 }

              it_behaves_like 'constraint violation' do
                let(:message) {
                  I18n.t('api_v3.errors.validation.' \
                                     'invalid_user_assigned_to_work_package',
                         property: property.capitalize)
                }
              end
            end

            context 'user is not visible' do
              let(:invalid_user) { FactoryGirl.create(:user) }
              let(:user_href) { api_v3_paths.user invalid_user.id }

              it_behaves_like 'constraint violation' do
                let(:message) {
                  I18n.t('api_v3.errors.validation.invalid_user_assigned_to_work_package',
                         property: property.capitalize)
                }
              end
            end

            context 'wrong resource' do
              let(:user_href) { api_v3_paths.status work_package.status.id }

              include_context 'patch request'

              it_behaves_like 'invalid resource link' do
                let(:message) {
                  I18n.t('api_v3.errors.invalid_resource',
                         property: property,
                         expected: '/api/v3/users/:id',
                         actual: user_href)
                }
              end
            end

            context 'group assignment disabled' do
              let(:user_href) { api_v3_paths.user group.id }

              include_context 'setup group membership', false
              include_context 'patch request'

              it_behaves_like 'constraint violation' do
                let(:message) {
                  I18n.t('api_v3.errors.validation.invalid_user_assigned_to_work_package',
                         property: "#{property.capitalize}")
                }
              end
            end
          end
        end

        context 'assingee' do
          it_behaves_like 'handling people', 'assignee'
        end

        context 'responsible' do
          it_behaves_like 'handling people', 'responsible'
        end
      end

      context 'version' do
        let(:target_version) { FactoryGirl.create(:version, project: project) }
        let(:version_link) { api_v3_paths.version target_version.id }
        let(:version_parameter) { { _links: { version: { href: version_link } } } }
        let(:params) { valid_params.merge(version_parameter) }

        before do allow(User).to receive(:current).and_return current_user end

        context 'valid' do
          include_context 'patch request'

          it { expect(response.status).to eq(200) }

          it 'should respond with the work package assigned to the version' do
            expect(subject.body).to be_json_eql(target_version.name.to_json)
              .at_path('_embedded/version/name')
          end

          it_behaves_like 'lock version updated'
        end
      end

      context 'category' do
        let(:target_category) { FactoryGirl.create(:category, project: project) }
        let(:category_link) { api_v3_paths.category target_category.id }
        let(:category_parameter) { { _links: { category: { href: category_link } } } }
        let(:params) { valid_params.merge(category_parameter) }

        before do allow(User).to receive(:current).and_return current_user end

        context 'valid' do
          include_context 'patch request'

          it { expect(response.status).to eq(200) }

          it 'should respond with the work package assigned to the category' do
            expect(subject.body).to be_json_eql(target_category.name.to_json)
              .at_path('_embedded/category/name')
          end

          it_behaves_like 'lock version updated'
        end
      end

      context 'priority' do
        let(:target_priority) { FactoryGirl.create(:priority) }
        let(:priority_link) { api_v3_paths.priority target_priority.id }
        let(:priority_parameter) { { _links: { priority: { href: priority_link } } } }
        let(:params) { valid_params.merge(priority_parameter) }

        before do allow(User).to receive(:current).and_return current_user end

        context 'valid' do
          include_context 'patch request'

          it { expect(response.status).to eq(200) }

          it 'should respond with the work package assigned to the priority' do
            expect(subject.body).to be_json_eql(target_priority.name.to_json)
              .at_path('_embedded/priority/name')
          end

          it_behaves_like 'lock version updated'
        end
      end

      context 'list custom field' do
        let(:custom_field) {
          FactoryGirl.create(:work_package_custom_field,
                             field_format: 'list',
                             is_required: false,
                             possible_values: target_value)
        }
        let(:target_value) { 'Low No. of specialc#aracters!' }
        let(:value_link) { api_v3_paths.string_object target_value }
        let(:value_parameter) {
          { _links: { custom_field.accessor_name.camelize(:lower) => { href: value_link } } }
        }
        let(:params) { valid_params.merge(value_parameter) }

        before do
          allow(User).to receive(:current).and_return current_user
          work_package.project.work_package_custom_fields << custom_field
          work_package.type.custom_fields << custom_field
        end

        context 'valid' do
          include_context 'patch request'

          it { expect(response.status).to eq(200) }

          it 'should respond with the work package assigned to the new value' do
            expect(subject.body).to be_json_eql(value_link.to_json)
              .at_path("_links/#{custom_field.accessor_name.camelize(:lower)}/href")
          end

          it_behaves_like 'lock version updated'
        end
      end

      describe 'update with read-only attributes' do
        describe 'single read-only violation' do
          context 'created and updated' do
            let(:tomorrow) { (DateTime.now + 1.day).utc.iso8601 }
            include_context 'patch request'

            context 'created_at' do
              let(:params) { valid_params.merge(createdAt: tomorrow) }

              it_behaves_like 'read-only violation', 'createdAt'
            end

            context 'updated_at' do
              let(:params) { valid_params.merge(updatedAt: tomorrow) }

              it_behaves_like 'read-only violation', 'updatedAt'
            end
          end
        end

        context 'multiple read-only attributes' do
          let(:params) do
            valid_params.merge(createdAt: Date.today.iso8601, updatedAt: Date.today.iso8601)
          end

          include_context 'patch request'

          it_behaves_like 'multiple errors', 422

          it_behaves_like 'multiple errors of the same type', 2, 'PropertyIsReadOnly'

          it_behaves_like 'multiple errors of the same type with details',
                          'attribute',
                          'attribute' => ['createdAt', 'updatedAt']
        end
      end

      context 'invalid update' do
        context 'single invalid attribute' do
          let(:params) { valid_params.tap { |h| h[:subject] = '' } }

          include_context 'patch request'

          it_behaves_like 'constraint violation' do
            let(:message) { "Subject can't be blank" }
          end
        end

        context 'multiple invalid attributes' do
          let(:params) do
            valid_params.tap { |h| h[:subject] = '' }
              .merge(parentId: '-123')
          end

          before do role.add_permission!(:manage_subtasks) end

          include_context 'patch request'

          it_behaves_like 'multiple errors', 422

          it_behaves_like 'multiple errors of the same type', 2, 'PropertyConstraintViolation'

          it_behaves_like 'multiple errors of the same type with messages' do
            let(:message) { ['Subject can\'t be blank.', 'Parent does not exist.'] }
          end
        end

        context 'missing lock version' do
          let(:params) { valid_params.except(:lockVersion) }

          include_context 'patch request'

          it_behaves_like 'update conflict'
        end

        context 'stale object' do
          let(:params) { valid_params.merge(subject: 'Updated subject') }

          before do
            params

            work_package.subject = 'I am the first!'
            work_package.save!

            expect(valid_params[:lockVersion]).not_to eq(work_package.lock_version)
          end

          include_context 'patch request'

          it_behaves_like 'update conflict'
        end

        context 'invalid work package children' do
          let(:params) { valid_params.merge(lockVersion: work_package.reload.lock_version) }
          let!(:child_1) { FactoryGirl.create(:work_package) }
          let!(:child_2) { FactoryGirl.create(:work_package) }

          before do
            [child_1, child_2].each do |c|
              c.parent = work_package
              c.save!(validate: false)
            end
          end

          include_context 'patch request'

          it_behaves_like 'multiple errors', 422, 'Multiple fields violated their constraints.'

          it_behaves_like 'multiple errors of the same type', 2, 'PropertyConstraintViolation'

          it_behaves_like 'multiple errors of the same type with messages' do
            let(:message) {
              [child_1.id, child_2.id].map { |id|
                "Child element ##{id}: Parent cannot be in another project."
              }
            }
          end
        end
      end
    end
  end

  describe '#delete' do
    let(:path) { api_v3_paths.work_package work_package.id }

    before do
      delete path
    end

    subject { last_response }

    context 'with required permissions' do
      let(:permissions) { [:view_work_packages, :delete_work_packages] }

      it 'responds with HTTP No Content' do
        expect(subject.status).to eq 204
      end

      it 'deletes the work package' do
        expect(WorkPackage.exists?(work_package.id)).to be_falsey
      end

      context 'for a non-existent work package' do
        let(:path) { api_v3_paths.work_package 1337 }

        it_behaves_like 'not found' do
          let(:id) { 1337 }
          let(:type) { 'WorkPackage' }
        end
      end
    end

    context 'without permission to see work packages' do
      let(:permissions) { [] }

      it_behaves_like 'not found'
    end

    context 'without permission to delete work packages' do
      let(:permissions) { [:view_work_packages] }

      it_behaves_like 'unauthorized access'

      it 'does not delete the work package' do
        expect(WorkPackage.exists?(work_package.id)).to be_truthy
      end
    end
  end

  describe '#post' do
    let(:path) { api_v3_paths.work_packages }
    let(:permissions) { [:add_work_packages, :view_project] }
    let(:status) { FactoryGirl.build(:status, is_default: true) }
    let(:priority) { FactoryGirl.build(:priority, is_default: true) }
    let(:type) { project.types.first }
    let(:parameters) do
      {
        subject: 'new work packages',
        _links: {
          type: {
            href: api_v3_paths.type(type.id)
          },
          project: {
            href: api_v3_paths.project(project.id)
          }
        }
      }
    end

    before do
      status.save!
      priority.save!

      FactoryGirl.create(:user_preference, user: current_user, others: { no_self_notified: false })
      post path, parameters.to_json, 'CONTENT_TYPE' => 'application/json'
    end

    context 'notifications' do
      let(:permissions) { [:add_work_packages, :view_project, :view_work_packages] }

      it 'sends a mail by default' do
        expect(ActionMailer::Base.deliveries.count).to eq(1)
      end

      context 'without notifications' do
        let(:path) { "#{api_v3_paths.work_packages}?notify=false" }

        it 'should not send a mail' do
          expect(ActionMailer::Base.deliveries.count).to eq(0)
        end
      end

      context 'with notifications' do
        let(:path) { "#{api_v3_paths.work_packages}?notify=true" }

        it 'should send a mail' do
          expect(ActionMailer::Base.deliveries.count).to eq(1)
        end
      end
    end

    it 'should return Created(201)' do
      expect(last_response.status).to eq(201)
    end

    it 'should create a work package' do
      expect(WorkPackage.all.count).to eq(1)
    end

    it 'should use the given parameters' do
      expect(WorkPackage.first.subject).to eq(parameters[:subject])
    end

    it 'should be associated with the provided project' do
      expect(WorkPackage.first.project).to eq(project)
    end

    it 'should be associated with the provided type' do
      expect(WorkPackage.first.type).to eq(type)
    end

    context 'no permissions' do
      let(:current_user) { FactoryGirl.create(:user) }

      it 'should hide the endpoint' do
        expect(last_response.status).to eq(403)
      end
    end

    context 'view_project permission' do
      # Note that this just removes the add_work_packages permission
      # view_project is actually provided by being a member of the project
      let(:permissions) { [:view_project] }

      it 'should point out the missing permission' do
        expect(last_response.status).to eq(403)
      end
    end

    context 'empty parameters' do
      let(:parameters) { {} }

      it_behaves_like 'multiple errors', 422

      it 'should not create a work package' do
        expect(WorkPackage.all.count).to eq(0)
      end
    end

    context 'bogus parameters' do
      let(:parameters) do
        {
          bogus: 'bogus',
          _links: {
            type: {
              href: api_v3_paths.type(project.types.first.id)
            },
            project: {
              href: api_v3_paths.project(project.id)
            }
          }
        }
      end

      it_behaves_like 'constraint violation' do
        let(:message) { "Subject can't be blank" }
      end

      it 'should not create a work package' do
        expect(WorkPackage.all.count).to eq(0)
      end
    end

    context 'invalid value' do
      let(:parameters) do
        {
          subject: nil,
          _links: {
            type: {
              href: api_v3_paths.type(project.types.first.id)
            },
            project: {
              href: api_v3_paths.project(project.id)
            }
          }
        }
      end

      it_behaves_like 'constraint violation' do
        let(:message) { "Subject can't be blank" }
      end

      it 'should not create a work package' do
        expect(WorkPackage.all.count).to eq(0)
      end
    end
  end
end