#-- copyright
# OpenProject is a project management system.
# Copyright (C) 2012-2018 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) 2006-2017 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 docs/COPYRIGHT.rdoc for more details.
#++

require 'spec_helper'
require 'rack/test'

describe 'API v3 Version resource', content_type: :json do
  include Rack::Test::Methods
  include API::V3::Utilities::PathHelper

  let(:current_user) do
    FactoryBot.create(:user,
                      member_in_project: project,
                      member_with_permissions: permissions)
  end
  let(:permissions) { %i[view_work_packages manage_versions] }
  let(:project) { FactoryBot.create(:project, is_public: false) }
  let(:other_project) { FactoryBot.create(:project, is_public: false) }
  let!(:int_cf) { FactoryBot.create(:int_version_custom_field) }
  let(:version_in_project) { FactoryBot.build(:version, project: project, custom_field_values: { int_cf.id => 123 }) }
  let(:version_in_other_project) do
    FactoryBot.build(:version,
                     project: other_project,
                     sharing: 'system',
                     custom_field_values: { int_cf.id => 123 })
  end

  subject(:response) { last_response }

  describe 'GET api/v3/versions/:id' do
    let(:get_path) { api_v3_paths.version version_in_project.id }

    shared_examples_for 'successful response' do
      it 'responds with 200' do
        expect(last_response.status).to eq(200)
      end

      it 'returns the version' do
        expect(last_response.body)
          .to be_json_eql('Version'.to_json)
          .at_path('_type')

        expect(last_response.body)
          .to be_json_eql(expected_version.id.to_json)
          .at_path('id')

        expect(last_response.body)
          .to be_json_eql(123.to_json)
          .at_path("customField#{int_cf.id}")
      end
    end

    context 'logged in user with permissions' do
      before do
        version_in_project.save!
        login_as current_user

        get get_path
      end

      it_should_behave_like 'successful response' do
        let(:expected_version) { version_in_project }
      end
    end

    context 'logged in user with permission on project a version is shared with' do
      let(:get_path) { api_v3_paths.version version_in_other_project.id }

      before do
        version_in_other_project.save!
        login_as current_user

        get get_path
      end

      it_should_behave_like 'successful response' do
        let(:expected_version) { version_in_other_project }
      end
    end

    context 'logged in user without permission' do
      let(:permissions) { [] }

      before(:each) do
        version_in_project.save!
        login_as current_user

        get get_path
      end

      it_behaves_like 'not found' do
        let(:id) { version_in_project.id }
        let(:type) { 'Version' }
      end
    end
  end

  describe 'PATCH api/v3/versions' do
    let(:path) { api_v3_paths.version(version.id) }
    let(:version) do
      FactoryBot.create(:version,
                        name: 'Old name',
                        description: 'Old description',
                        start_date: '2017-06-01',
                        effective_date: '2017-07-01',
                        status: 'open',
                        sharing: 'none',
                        project: project,
                        custom_field_values: { int_cf.id => 123,
                                               list_cf.id => list_cf.custom_options.first.id })
    end
    let!(:int_cf) { FactoryBot.create(:int_version_custom_field) }
    let!(:list_cf) { FactoryBot.create(:list_version_custom_field) }
    let(:body) do
      {
        name: 'New name',
        description: {
          raw: 'New description'
        },
        "customField#{int_cf.id}": 5,
        "startDate": "2018-01-01",
        "endDate": "2018-01-09",
        "status": "closed",
        "sharing": "descendants",
        _links: {
          "customField#{list_cf.id}": {
            href: api_v3_paths.custom_option(list_cf.custom_options.last.id)
          }
        }
      }.to_json
    end

    before do
      login_as current_user

      patch path, body
    end

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

    it 'updates the version' do
      expect(Version.find_by(name: 'New name'))
        .to be_present
    end

    it 'returns the updated version' do
      expect(last_response.body)
        .to be_json_eql('Version'.to_json)
        .at_path('_type')

      expect(last_response.body)
        .to be_json_eql('New name'.to_json)
        .at_path('name')

      expect(last_response.body)
        .to be_json_eql('<p>New description</p>'.to_json)
        .at_path('description/html')

      expect(last_response.body)
        .to be_json_eql('2018-01-01'.to_json)
        .at_path('startDate')

      expect(last_response.body)
        .to be_json_eql('2018-01-09'.to_json)
        .at_path('endDate')

      expect(last_response.body)
        .to be_json_eql('closed'.to_json)
        .at_path('status')

      expect(last_response.body)
        .to be_json_eql('descendants'.to_json)
        .at_path('sharing')

      # unchanged
      expect(last_response.body)
        .to be_json_eql(project.name.to_json)
        .at_path('_links/definingProject/title')

      expect(last_response.body)
        .to be_json_eql(api_v3_paths.custom_option(list_cf.custom_options.last.id).to_json)
        .at_path("_links/customField#{list_cf.id}/href")

      expect(last_response.body)
        .to be_json_eql(5.to_json)
        .at_path("customField#{int_cf.id}")
    end

    context 'if attempting to switch the project' do
      let(:other_project) do
        FactoryBot.create(:project).tap do |p|
          FactoryBot.create(:member,
                            project: p,
                            roles: [FactoryBot.create(:role, permissions: [:manage_versions])],
                            user: current_user)
        end
      end

      let(:other_membership) do
      end
      let(:body) do
        {
          _links: {
            "definingProject": {
              "href": api_v3_paths.project(other_project.id)

            }
          }
        }.to_json
      end

      it 'returns 422' do
        expect(last_response.status)
          .to eql(422)

        expect(last_response.body)
          .to be_json_eql("You must not write a read-only attribute.".to_json)
          .at_path('message')
      end
    end

    context 'if lacking the manage permissions' do
      let(:permissions) { [:view_work_packages] }

      it_behaves_like 'unauthorized access'
    end

    context 'if lacking the manage permissions' do
      let(:permissions) { [] }

      it_behaves_like 'not found' do
        let(:id) { version.id }
        let(:type) { 'Version' }
      end
    end

    context 'if having the manage permission in a different project' do
      let(:other_membership) do
        FactoryBot.create(:member,
                          project: FactoryBot.create(:project),
                          roles: [FactoryBot.create(:role, permissions: [:manage_versions])])
      end

      let(:permissions) do
        # load early
        other_membership

        [:view_work_packages]
      end

      it_behaves_like 'unauthorized access'
    end
  end

  describe 'POST api/v3/versions' do
    let(:path) { api_v3_paths.versions }
    let!(:int_cf) { FactoryBot.create(:int_version_custom_field) }
    let!(:list_cf) { FactoryBot.create(:list_version_custom_field) }
    let(:body) do
      {
        name: 'New version',
        description: {
          raw: 'A new description'
        },
        "customField#{int_cf.id}": 5,
        "startDate": "2018-01-01",
        "endDate": "2018-01-09",
        "status": "closed",
        "sharing": "descendants",
        _links: {
          definingProject: {
            href: api_v3_paths.project(project.id)
          },
          "customField#{list_cf.id}": {
            href: api_v3_paths.custom_option(list_cf.custom_options.first.id)
          }
        }
      }.to_json
    end

    before do
      login_as current_user

      post path, body
    end

    it 'responds with 201' do
      expect(last_response.status).to eq(201)
    end

    it 'creates the version' do
      expect(Version.find_by(name: 'New version'))
        .to be_present
    end

    it 'returns the newly created version' do
      expect(last_response.body)
        .to be_json_eql('Version'.to_json)
        .at_path('_type')

      expect(last_response.body)
        .to be_json_eql('New version'.to_json)
        .at_path('name')

      expect(last_response.body)
        .to be_json_eql('<p>A new description</p>'.to_json)
        .at_path('description/html')

      expect(last_response.body)
        .to be_json_eql('2018-01-01'.to_json)
        .at_path('startDate')

      expect(last_response.body)
        .to be_json_eql('2018-01-09'.to_json)
        .at_path('endDate')

      expect(last_response.body)
        .to be_json_eql('closed'.to_json)
        .at_path('status')

      expect(last_response.body)
        .to be_json_eql('descendants'.to_json)
        .at_path('sharing')

      expect(last_response.body)
        .to be_json_eql(project.name.to_json)
        .at_path('_links/definingProject/title')

      expect(last_response.body)
        .to be_json_eql(api_v3_paths.custom_option(list_cf.custom_options.first.id).to_json)
        .at_path("_links/customField#{list_cf.id}/href")

      expect(last_response.body)
        .to be_json_eql(5.to_json)
        .at_path("customField#{int_cf.id}")
    end

    context 'if lacking the manage permissions' do
      let(:permissions) { [] }

      it_behaves_like 'unauthorized access'
    end

    context 'if having the manage permission in a different project' do
      let(:other_membership) do
        FactoryBot.create(:member,
                          project: FactoryBot.create(:project),
                          roles: [FactoryBot.create(:role, permissions: [:manage_versions])])
      end

      let(:permissions) do
        # load early
        other_membership

        [:view_work_packages]
      end

      it_behaves_like 'unauthorized access'
    end
  end

  describe 'GET api/v3/versions' do
    let(:get_path) { api_v3_paths.versions }
    let(:response) { last_response }
    let(:versions) { [version_in_project] }

    before do
      versions.map(&:save!)
      login_as current_user

      get get_path
    end

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

    it_behaves_like 'API V3 collection response', 1, 1, 'Version'

    it 'is the version the user has permission in' do
      expect(response.body)
        .to be_json_eql(api_v3_paths.version(version_in_project.id).to_json)
        .at_path('_embedded/elements/0/_links/self/href')
    end

    context 'filtering for project by sharing' do
      let(:shared_version_in_project) do
        FactoryBot.build(:version, project: project, sharing: 'system')
      end
      let(:versions) { [version_in_project, shared_version_in_project] }

      let(:filter_query) do
        [{ sharing: { operator: '=', values: ['system'] } }]
      end

      let(:get_path) do
        "#{api_v3_paths.versions}?filters=#{CGI.escape(JSON.dump(filter_query))}"
      end

      it_behaves_like 'API V3 collection response', 1, 1, 'Version'

      it 'returns the shared version' do
        expect(response.body)
          .to be_json_eql(api_v3_paths.version(shared_version_in_project.id).to_json)
          .at_path('_embedded/elements/0/_links/self/href')
      end
    end
  end

  describe 'DELETE /api/v3/versions/:id' do
    let(:path) { api_v3_paths.version(version.id) }
    let(:version) do
      FactoryBot.create(:version,
                        project: project)
    end

    before do
      login_as current_user

      delete path
    end

    subject { last_response }

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

      it 'deletes the version' do
        expect(Version.exists?(version.id)).to be_falsey
      end

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

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

    context 'with work packages attached to it' do
      let(:version) do
        FactoryBot.create(:version,
                          project: project).tap do |v|
          FactoryBot.create(:work_package,
                            project: project,
                            fixed_version: v)
        end
      end

      it 'returns a 422' do
        expect(subject.status)
          .to eql 422
      end

      it 'does not delete the version' do
        expect(Version.exists?(version.id)).to be_truthy
      end
    end

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

      it_behaves_like 'not found'
    end

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

      it_behaves_like 'unauthorized access'

      it 'does not delete the version' do
        expect(Version.exists?(version.id)).to be_truthy
      end
    end
  end
end