#-- encoding: UTF-8

#-- copyright
# OpenProject is an open source project management software.
# Copyright (C) 2012-2021 the OpenProject GmbH
#
# 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 COPYRIGHT and LICENSE files for more details.
#++

module OpenProject
  module Patches
    module String #:nodoc:
      # Parses hours format and returns a float
      def to_hours
        s = dup
        s.strip!
        if s =~ %r{^(\d+([.,]\d+)?)h?$}
          s = $1
        else
          # 230: 2.5
          s.gsub!(%r{^(\d+):(\d+)$}) { $1.to_i + $2.to_i / 60.0 }
          # 2h30, 2h, 30m => 2.5, 2, 0.5
          s.gsub!(%r{^((\d+)\s*(h|hours?))?\s*((\d+)\s*(m|min)?)?$}) { |m| $1 || $4 ? ($2.to_i + $5.to_i / 60.0) : m[0] }
        end
        # 2,5 => 2.5
        s.gsub!(',', '.')
        begin; Kernel.Float(s); rescue StandardError; nil; end
      end

      # TODO: Check if this can be deleted
      def with_leading_slash
        starts_with?('/') ? self : "/#{self}"
      end
    end
  end
end

String.include OpenProject::Patches::String
String.include Redmine::Diff::Diffable