module Selenium
  module WebDriver
    module Platform

      module_function

      def home
        # jruby has an issue with ENV['HOME'] on Windows
        @home ||= Platform.jruby? ? java.lang.System.getProperty('user.home') : ENV['HOME']
      end

      def platform
        @platform ||= case RUBY_PLATFORM
                      when /java/
                        :java
                      when /mswin|msys|mingw32/
                        :windows
                      when /darwin/
                        :macosx
                      when /linux/
                        :linux
                      when /solaris|bsd/
                        :unix
                      else
                        RUBY_PLATFORM
                      end
      end

      def os
        @os ||= begin
          os = platform()

          if os == :java
            require "java"
            os_name = java.lang.System.getProperty("os.name")
            os = case os_name
                  when /windows/i then :windows
                  when /mac os/i  then :macosx
                  when /linux/i   then :linux
                  else                 os_name
                  end
          end

          os
        end
      end

      def jruby?
        platform == :java
      end

      def ruby187?
        !!(RUBY_VERSION =~ /^1\.8\.7/)
      end

      def ruby19?
        !!(RUBY_VERSION =~ /^1\.9/)
      end

      def win?
        os == :windows
      end

      def mac?
        os == :macosx
      end

      def wrap_in_quotes_if_necessary(str)
        win? ? %{"#{str}"} : str
      end

      def make_writable(file)
        File.chmod 0766, file
      end

    end # Platform
  end # WebDriver
end # Selenium

if __FILE__ == $0
  p :platform => WebDriver::Platform.platform,
    :os       => WebDriver::Platform.os,
    :ruby187? => WebDriver::Platform.ruby187?,
    :ruby19?  => WebDriver::Platform.ruby19?,
    :jruby?   => WebDriver::Platform.jruby?,
    :win?     => WebDriver::Platform.win?,
    :home     => WebDriver::Platform.home
end