#-- encoding: UTF-8
#-- copyright
# OpenProject is a project management system.
# Copyright (C) 2012-2017 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 doc/COPYRIGHT.rdoc for more details.
#++

require 'spec_helper'

describe UpdateChildWorkPackageService, type: :model do
  let(:user) { FactoryGirl.build_stubbed(:user) }
  let(:project) {
    p = FactoryGirl.build_stubbed(:project)
    allow(p).to receive(:shared_versions).and_return([])

    p
  }
  let(:type) { FactoryGirl.build_stubbed(:type) }
  let(:status) { FactoryGirl.build_stubbed(:status) }
  let(:work_package) {
    wp = FactoryGirl.build_stubbed(:work_package,
                                   type: type,
                                   status: status,
                                   project: project)
    allow(wp)
      .to receive(:new_statuses_allowed_to)
      .with(user, true)
      .and_return([status])
    wp.send(:clear_changes_information)

    wp
  }
  let(:instance) do
    UpdateChildWorkPackageService.new(user: user,
                                      work_package: work_package)
  end

  describe '.contract' do
    it 'uses the UpdateContract contract' do
      expect(described_class.contract).to eql WorkPackages::UpdateContract
    end
  end

  describe 'call' do
    let(:mock_contract) do
      double(WorkPackages::UpdateContract,
             new: mock_contract_instance)
    end
    let(:mock_contract_instance) do
      mock_model(WorkPackages::UpdateContract)
    end

    before do
      allow(described_class).to receive(:contract).and_return(mock_contract)
    end

    let(:send_notifications) { true }

    before do
      expect(JournalManager)
        .to receive(:with_send_notifications)
        .with(send_notifications)
        .and_yield

      allow(work_package).to receive(:save).and_return true
      allow(mock_contract_instance).to receive(:validate).and_return true
    end

    context 'when switching the project' do
      let(:target_project) {
        p = FactoryGirl.build_stubbed(:project)
        allow(p).to receive(:types).and_return([type])

        p
      }

      context 'fixed_version' do
        let(:version) {
          FactoryGirl.build_stubbed(:version)
        }

        before do
          work_package.fixed_version = version
        end

        it 'is nil if the fixed version is not defined in the new project' do
          allow(target_project).to receive(:shared_versions).and_return []

          instance.call(attributes: { project: target_project })

          expect(work_package.fixed_version_id).to be_nil
        end
      end

      context 'category' do
        let(:category) do
          FactoryGirl.build_stubbed(:category,
                                    project: work_package.project,
                                    name: 'blubs')
        end
        let(:target_category) do
          FactoryGirl.build_stubbed(:category,
                                    project: target_project,
                                    name: 'blubs')
        end

        it 'assigns a category of the same name' do
          work_package.category = category

          categories = [target_category]
          allow(target_project)
            .to receive(:categories)
            .and_return(categories)
          allow(categories)
            .to receive(:find_by)
            .with(name: category.name)
            .and_return(target_category)

          instance.call(attributes: { project: target_project })

          expect(work_package.category).to eql target_category
        end

        it 'assigns nil to category if equally named category exists' do
          work_package.category = category

          categories = []
          allow(target_project)
            .to receive(:categories)
            .and_return(categories)
          allow(categories)
            .to receive(:find_by)
            .with(name: category.name)
            .and_return(nil)

          instance.call(attributes: { project: target_project })

          expect(work_package.category).to be_nil
        end
      end

      context 'type and status' do
        let(:type2) { FactoryGirl.build_stubbed(:type) }
        let(:type3) { FactoryGirl.build_stubbed(:type) }
        let(:status2) { FactoryGirl.build_stubbed(:status) }
        let(:status3) { FactoryGirl.build_stubbed(:status) }
        let(:default_type) { FactoryGirl.build_stubbed(:type, is_default: true) }
        let(:default_status) { FactoryGirl.build_stubbed(:status, is_default: true) }

        context 'if the type is available in the project' do
          before do
            allow(target_project)
              .to receive(:types)
              .and_return([type])

            instance.call(attributes: { project: target_project })
          end

          it 'keeps the type' do
            expect(work_package.type).to eql type
          end

          it 'keeps the status' do
            expect(work_package.status).to eql status
          end
        end

        context 'if the current type is not available and the default type is' do
          before do
            allow(target_project)
              .to receive(:types)
              .and_return([type2, default_type])
          end

          it 'changes to the default type' do
            instance.call(attributes: { project: target_project })

            expect(work_package.type).to eql default_type
          end

          it 'keeps the status if it is part of the workflow' do
            allow(work_package)
              .to receive(:new_statuses_allowed_to)
              .with(user, true)
              .and_return([status2, status3, status, default_status])

            instance.call(attributes: { project: target_project })

            expect(work_package.status).to eql status
          end

          it 'uses the default status if the current one is not part of the workflow' do
            allow(work_package)
              .to receive(:new_statuses_allowed_to)
              .with(user, true)
              .and_return([status2, status3, default_status])

            instance.call(attributes: { project: target_project })

            expect(work_package.status).to eql default_status
          end

          it 'uses the first status if neither the current nor the default
            is part of the workflow' do
            allow(work_package)
              .to receive(:new_statuses_allowed_to)
              .with(user, true)
              .and_return([status2, status3])

            instance.call(attributes: { project: target_project })

            expect(work_package.status).to eql status2
          end
        end

        context 'if neither the current nor the default type is available' do
          before do
            allow(target_project)
              .to receive(:types)
              .and_return([type2, type3])
          end

          it 'takes the first type' do
            instance.call(attributes: { project: target_project })

            expect(work_package.type).to eql type2
          end

          it 'keeps the status if it is part of the workflow' do
            allow(work_package)
              .to receive(:new_statuses_allowed_to)
              .with(user, true)
              .and_return([status2, status3, status, default_status])

            instance.call(attributes: { project: target_project })

            expect(work_package.status).to eql status
          end

          it 'uses the default status if the current one is not part of the workflow' do
            allow(work_package)
              .to receive(:new_statuses_allowed_to)
              .with(user, true)
              .and_return([status2, status3, default_status])

            instance.call(attributes: { project: target_project })

            expect(work_package.status).to eql default_status
          end

          it 'uses the first status if neither the current nor the default
            is part of the workflow' do
            allow(work_package)
              .to receive(:new_statuses_allowed_to)
              .with(user, true)
              .and_return([status2, status3])

            instance.call(attributes: { project: target_project })

            expect(work_package.status).to eql status2
          end
        end
      end
    end
  end
end