#-- encoding: UTF-8
#-- 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.
#++

##
# Implements the asynchronous deletion of a local repository.
class Scm::DeleteManagedRepositoryService < Scm::BaseRepositoryService
  ##
  # Checks if a given repository may be deleted
  # Registers an asynchronous job to delete the repository on disk.
  #
  def call
    return false unless repository.managed?

    if repository.class.manages_remote?
      Scm::DeleteRemoteRepositoryJob.new(repository, perform_now: true).perform
      true
    else
      delete_local_repository
    end
  rescue OpenProject::Scm::Exceptions::ScmError => e
    @rejected = e.message
    false
  end

  def delete_local_repository
    # Create necessary changes to repository to mark
    # it as managed by OP, but delete asynchronously.
    managed_path = repository.root_url

    if File.directory?(managed_path)
      ##
      # We want to move this functionality in a Delayed Job,
      # but this heavily interferes with the error handling of the whole
      # repository management process.
      # Instead, this will be refactored into a single service wrapper for
      # creating and deleting repositories, which provides transactional DB access
      # as well as filesystem access.
      Scm::DeleteLocalRepositoryJob.new(managed_path).perform
    end

    true
  rescue SystemCallError => e
    @rejected = I18n.t('repositories.errors.managed_delete_local',
                       path: repository.root_url,
                       error_message: e.message)
    false
  end

  ##
  # Returns the error symbol
  def localized_rejected_reason
    @rejected ||= I18n.t('repositories.errors.managed_delete')
  end
end
