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# frozen_string_literal: true

# Redmine - project management software
# Copyright (C) 2006-2023  Jean-Philippe Lang
#
# 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.

require File.dirname(__FILE__) + '/utils/date_calculation'
require File.dirname(__FILE__) + '/utils/shell'
require 'fileutils'

module Redmine
  module Utils
    class << self
      # Returns the relative root url of the application
      def relative_url_root
        if ActionController::Base.respond_to?(:relative_url_root)
          ActionController::Base.relative_url_root.to_s
        else
          ActionController::Base.config.relative_url_root.to_s
        end
      end

      # Sets the relative root url of the application
      def relative_url_root=(arg)
        if ActionController::Base.respond_to?(:relative_url_root=)
          ActionController::Base.relative_url_root=arg
        else
          ActionController::Base.config.relative_url_root = arg
        end
      end

      # Generates a n bytes random hex string
      # Example:
      #   random_hex(4) # => "89b8c729"
      def random_hex(n)
        SecureRandom.hex(n)
      end

      def save_upload(upload, path)
        directory = File.dirname(path)
        FileUtils.mkdir_p directory
        File.open(path, "wb") do |f|
          if upload.respond_to?(:read)
            buffer = ""
            while (buffer = upload.read(8192))
              f.write(buffer)
              yield buffer if block_given?
            end
          else
            f.write(upload)
            yield upload if block_given?
          end
        end
      end
    end
  end
end