#-- encoding: UTF-8
#-- copyright
# OpenProject is a project management system.
# Copyright (C) 2012-2015 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) 2006-2013 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 doc/COPYRIGHT.rdoc for more details.
#++

module API
  module Errors
    class ErrorBase < Grape::Exceptions::Base
      attr_reader :code, :message, :details, :errors

      def self.create(errors)
        [:error_not_found, :error_unauthorized, :error_conflict, :error_readonly].each do |key|
          if errors.has_key?(key)
            case key
            when :error_not_found
              return ::API::Errors::NotFound.new(errors[key].join(' '))
            when :error_unauthorized
              return ::API::Errors::Unauthorized
            when :error_conflict
              return ::API::Errors::Conflict
            when :error_readonly
              return ::API::Errors::UnwritableProperty.new(errors[key].flatten)
            end
          end
        end

        messages_by_attribute = ::API::Errors::Validation.create(errors)
        ::API::Errors::Validation.new(messages_by_attribute.values.map(&:message))
      end

      ##
      # Allows defining this error class's identifier once.
      # Used to read it otherwise.
      def self.identifier(identifier = nil)
        @identifier ||= identifier
      end

      def initialize(code, message)
        @code = code
        @message = message
        @errors = []
      end
    end
  end
end