#-- encoding: UTF-8

#-- copyright
# OpenProject is an open source project management software.
# Copyright (C) 2012-2020 the OpenProject GmbH
#
# 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.
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# GNU General Public License for more details.
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require 'spec_helper'

describe Attachments::DeleteService, 'integration', with_settings: { journal_aggregation_time_minutes: 0 } do
  subject(:call) { described_class.new(model: attachment, user: user).call }

  let(:user) do
    FactoryBot.create(:user,
                      member_in_project: project,
                      member_with_permissions: permissions)
  end
  let(:project) { FactoryBot.create(:project) }
  let(:attachment) { FactoryBot.create(:attachment, container: container, author: author) }
  let(:author) { user }

  describe '#call' do
    context 'when container is journalized' do
      let(:container) { FactoryBot.create(:work_package, project: project) }
      let(:permissions) { %i[edit_work_packages] }

      shared_examples 'successful deletion' do
        it 'is successful' do
          expect(call)
            .to be_success
        end

        it 'removes the attachment' do
          expect(Attachment.where(id: attachment.id))
            .not_to exist
        end

        it 'adds a journal entry to the container' do
          expect(container.journals.reload.count).to eq 3 # 1 for WP creation + 1 for adding the attachment + 1 for deletion
        end

        it 'updates the timestamp on the container' do
          expect(container.reload.updated_at)
            .not_to eql timestamp_before
        end
      end

      context 'with a valid container' do
        let!(:timestamp_before) { container.updated_at }

        before do
          # Force to have a journal for the attachment
          attachment
          container.add_journal(user)
          container.save!

          call
        end

        it_behaves_like 'successful deletion'
      end

      context "with an invalid container" do
        let!(:timestamp_before) { container.updated_at }

        before do
          # Force to have a journal for the attachment
          attachment
          container.add_journal(user, 'Some notes')
          container.save!

          # have an invalid work package
          container.update_column(:subject, '')

          call
        end

        it_behaves_like 'successful deletion'
      end
    end

    context 'when not journalized' do
      let(:container) { FactoryBot.create(:message, forum: forum) }
      let(:forum) { FactoryBot.create(:forum, project: project)}
      let(:permissions) { %i[delete_messages edit_messages] }

      shared_examples 'successful deletion' do
        it 'is successful' do
          expect(call)
            .to be_success
        end

        it 'removes the attachment' do
          expect(Attachment.where(id: attachment.id))
            .not_to exist
        end

        it 'updates the timestamp on the container' do
          expect(container.reload.updated_at)
            .not_to eql timestamp_before
        end
      end

      context 'with a valid container' do
        let!(:timestamp_before) { container.updated_at }

        before do
          call
        end

        it_behaves_like 'successful deletion'
      end

      context "with an invalid container" do
        let!(:timestamp_before) { container.updated_at }

        before do
          # have an invalid container
          container.update_column(:subject, '')

          call
        end

        it_behaves_like 'successful deletion'
      end
    end

    context "when uncontainered" do
      let(:container) { nil }
      let(:permissions) { [] }

      before do
        call
      end

      context 'when the user is the attachment author' do
        it 'is successful' do
          expect(call)
            .to be_success
        end

        it 'removes the attachment' do
          expect(Attachment.where(id: attachment.id))
            .not_to exist
        end
      end

      context 'with the user not being the attachment author' do
        let(:author) { FactoryBot.create(:user) }

        it 'fails' do
          expect(call)
            .to be_failure
        end

        it 'keeps the attachment' do
          expect(Attachment.find(attachment.id))
            .to eql attachment
        end
      end
    end
  end
end