# Copyright (c) 2013-2016 SUSE LLC
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of version 3 of the GNU General Public License as
# published by the Free Software Foundation.
#
# 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, contact SUSE LLC.
#
# To contact SUSE about this file by physical or electronic mail,
# you may find current contact information at www.suse.com

module Machinery
  class Ui
    class PackagesRenderer < Machinery::Ui::Renderer
      def display_name
        "Packages"
      end

      def content(description)
        return unless description.packages

        if description.packages.elements.empty?
          puts "There are no packages."
        end

        na_note("package vendor") if description.packages.any? { |a| a[:vendor] == "" }

        list do
          description.packages.each do |p|
            vendor = !p.vendor.empty? ? p.vendor : "N/A"
            item [
              p.name,
              p.version,
              p.release
            ].reject(&:empty?).join("-") + ".#{p.arch} (#{vendor})"
          end
        end
      end

      # In the comparison case we only want to show the package name, not all details like version,
      # architecture etc.
      def compare_content_only_in(description)
        return if description.packages.empty?

        list do
          description.packages.each do |p|
            item p.name.to_s
          end
        end
      end

      def compare_content_changed(changed_elements)
        list do
          changed_elements.each do |one, two|
            changes = []
            relevant_attributes = ["version", "vendor", "arch"]
            if one.version == two.version
              relevant_attributes << "release"
              relevant_attributes << "checksum" if one.release == two.release
            end

            relevant_attributes.each do |attribute|
              if one[attribute] != two[attribute]
                changes << "#{attribute}: #{one[attribute]} <> #{two[attribute]}"
              end
            end

            item "#{one.name} (#{changes.join(", ")})"
          end
        end
      end
    end
  end
end