#-- 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'

describe Attachment, type: :model do
  let(:stubbed_author) { FactoryBot.build_stubbed(:user) }
  let(:author) { FactoryBot.create :user }
  let(:long_description) { 'a' * 300 }
  let(:work_package) { FactoryBot.create :work_package }
  let(:stubbed_work_package) { FactoryBot.build_stubbed :stubbed_work_package }
  let(:file) { FactoryBot.create :uploaded_jpg, name: 'test.jpg' }
  let(:second_file) { FactoryBot.create :uploaded_jpg, name: 'test2.jpg' }
  let(:container) { stubbed_work_package }

  let(:attachment) do
    FactoryBot.build(
      :attachment,
      author:       author,
      container:    container,
      content_type: nil, # so that it is detected
      file:         file
    )
  end
  let(:stubbed_attachment) do
    FactoryBot.build_stubbed(
      :attachment,
      author:       stubbed_author,
      container:    container
    )
  end

  describe 'validations' do
    it 'is valid' do
      expect(stubbed_attachment)
        .to be_valid
    end

    context 'with a long description' do
      before do
        stubbed_attachment.description = long_description
        stubbed_attachment.valid?
      end

      it 'raises an error regarding description length' do
        expect(stubbed_attachment.errors[:description])
          .to match_array [I18n.t('activerecord.errors.messages.too_long', count: 255)]
      end
    end

    context 'without a container' do
      let(:container) { nil }

      it 'is valid' do
        expect(stubbed_attachment)
          .to be_valid
      end
    end

    context 'without a container first and then setting a container' do
      let(:container) { nil }

      before do
        stubbed_attachment.container = work_package
      end

      it 'is valid' do
        expect(stubbed_attachment)
          .to be_valid
      end
    end

    context 'with a container first and then removing the container' do
      before do
        stubbed_attachment.container = nil
      end

      it 'notes the field as unchangeable' do
        stubbed_attachment.valid?

        expect(stubbed_attachment.errors.symbols_for(:container))
          .to match_array [:unchangeable]
      end
    end

    context 'with a container first and then changing the container_id' do
      before do
        stubbed_attachment.container_id = stubbed_attachment.container_id + 1
      end

      it 'notes the field as unchangeable' do
        stubbed_attachment.valid?

        expect(stubbed_attachment.errors.symbols_for(:container))
          .to match_array [:unchangeable]
      end
    end

    context 'with a container first and then changing the container_type' do
      before do
        stubbed_attachment.container_type = 'WikiPage'
      end

      it 'notes the field as unchangeable' do
        stubbed_attachment.valid?

        expect(stubbed_attachment.errors.symbols_for(:container))
          .to match_array [:unchangeable]
      end
    end
  end

  describe '#containered?' do
    it 'is false if the attachment has no container' do
      stubbed_attachment.container = nil

      expect(stubbed_attachment)
        .not_to be_containered
    end

    it 'is true if the attachment has a container' do
      expect(stubbed_attachment)
        .to be_containered
    end
  end

  describe 'create' do
    it('creates a jpg file called test') do
      expect(File.exists?(attachment.diskfile.path)).to eq true
    end

    it('has the content type "image/jpeg"') do
      expect(attachment.content_type).to eq 'image/jpeg'
    end

    context 'with wrong content-type' do
      let(:file) { FactoryBot.create :uploaded_jpg, content_type: 'text/html' }

      it 'detects the correct content-type' do
        expect(attachment.content_type).to eq 'image/jpeg'
      end
    end

    it 'has the correct filesize' do
      expect(attachment.filesize)
        .to eql file.size
    end

    it 'creates an md5 digest' do
      expect(attachment.digest)
        .to eql Digest::MD5.file(file.path).hexdigest
    end

    it 'adds no cleanup job' do
      expect(Delayed::Job)
        .not_to receive(:enqueue)
        .with an_instance_of(Attachments::CleanupUncontaineredJob)

      attachment.save!
    end

    context 'with an unclaimed attachment' do
      let(:container) { nil }

      it 'adds a cleanup job' do
        allow(Delayed::Job)
          .to receive(:enqueue)

        expect(Delayed::Job)
          .to receive(:enqueue)
          .with(an_instance_of(Attachments::CleanupUncontaineredJob), any_args)

        attachment.save!
      end
    end
  end

  describe 'two attachments with same file name' do
    let(:second_file) { FactoryBot.create :uploaded_jpg, name: file.original_filename }
    it 'does not interfere' do
      a1 = Attachment.create!(container: work_package,
                              file: file,
                              author: author)
      a2 = Attachment.create!(container: work_package,
                              file: second_file,
                              author: author)

      expect(a1.diskfile.path)
        .not_to eql a2.diskfile.path
    end
  end

  ##
  # The tests assumes the default, file-based storage is configured and tests against that.
  # I.e. it does not test fog attachments being deleted from the cloud storage (such as S3).
  describe '#destroy' do
    before do
      attachment.save!

      expect(File.exists?(attachment.file.path)).to eq true

      attachment.destroy
      attachment.run_callbacks(:commit)
      # triggering after_commit callbacks manually as they are not triggered during rspec runs
      # though in dev/production mode destroy does trigger these callbacks
    end

    it "deletes the attachment's file" do
      expect(File.exists?(attachment.file.path)).to eq false
    end
  end
end