# -*- encoding: utf-8; frozen_string_literal: true -*-
#
#--
# This file is part of HexaPDF.
#
# HexaPDF - A Versatile PDF Creation and Manipulation Library For Ruby
# Copyright (C) 2014-2022 Thomas Leitner
#
# HexaPDF is free software: you can redistribute it and/or modify it
# under the terms of the GNU Affero General Public License version 3 as
# published by the Free Software Foundation with the addition of the
# following permission added to Section 15 as permitted in Section 7(a):
# FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY
# THOMAS LEITNER, THOMAS LEITNER DISCLAIMS THE WARRANTY OF NON
# INFRINGEMENT OF THIRD PARTY RIGHTS.
#
# HexaPDF 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 Affero General Public
# License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with HexaPDF. If not, see <http://www.gnu.org/licenses/>.
#
# The interactive user interfaces in modified source and object code
# versions of HexaPDF must display Appropriate Legal Notices, as required
# under Section 5 of the GNU Affero General Public License version 3.
#
# In accordance with Section 7(b) of the GNU Affero General Public
# License, a covered work must retain the producer line in every PDF that
# is created or manipulated using HexaPDF.
#
# If the GNU Affero General Public License doesn't fit your need,
# commercial licenses are available at <https://gettalong.at/hexapdf/>.
#++

require 'hexapdf/type/signature'

module HexaPDF
  module Type
    class Signature

      # Holds the result information when verifying a signature.
      class VerificationResult

        # :nodoc:
        MESSAGE_SORT_MAP = {
          info: {warning: 1, error: 1, info: 0},
          warning: {info: -1, error: 1, warning: 0},
          error: {info: -1, warning: -1, error: 0},
        }

        # This structure represents a single status message, containing the type (:info, :warning,
        # :error) and the content of the message.
        Message = Struct.new(:type, :content) do
          def <=>(other)
            MESSAGE_SORT_MAP[type][other.type]
          end
        end

        # An array with all result messages.
        attr_reader :messages

        # Creates an empty result object.
        def initialize
          @messages = []
        end

        # Returns +true+ if there are no error messages.
        def success?
          @messages.none? {|message| message.type == :error }
        end

        # Returns +true+ if there is at least one error message.
        def failure?
          !success?
        end

        # Adds a new message of the given type to this result object.
        #
        # +type+:: One of :info, :warning or :error.
        #
        # +content+:: The log message.
        def log(type, content)
          @messages << Message.new(type, content)
        end

      end

    end
  end
end