# frozen_string_literal: true

# Redmine plugin for Document Management System "Features"
#
# Karel Pičman <karel.picman@kontron.com>
#
# This file is part of Redmine DMSF plugin.
#
# Redmine DMSF plugin 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 3 of the License, or (at your option) any
# later version.
#
# Redmine DMSF plugin 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 Redmine DMSF plugin. If not, see
# <https://www.gnu.org/licenses/>.

# Redmine's PDF export patch to view DMS images

require 'redmine/export/pdf'

module RedmineDmsf
  module Patches
    # PDF
    module PdfPatch
      ##################################################################################################################
      # Overridden methods

      def get_image_filename(attrname)
        if attrname =~ %r{/dmsf/files/(\d+)/}
          file = DmsfFile.find_by(id: Regexp.last_match(1))
          file&.last_revision ? file.last_revision.disk_file : nil
        else
          super
        end
      end
    end
  end
end

# Apply the patch
if defined?(EasyPatchManager)
  EasyPatchManager.register_patch_to_be_first 'Redmine::Export::PDF::ITCPDF', 'RedmineDmsf::Patches::PdfPatch',
                                              prepend: true, first: true
else
  Redmine::Export::PDF::ITCPDF.prepend RedmineDmsf::Patches::PdfPatch
end