require "common/options/parser"
require "common/options/option"

module Bake

  class VsOptions < Parser
    attr_accessor :version, :roots, :rewriteSolution

    def initialize(argv)
      super(argv)

      @version = "2012"
      @rewriteSolution = false
      @roots = []

      add_option(["--version"                      ], lambda { |x| set_version(x)                                                 })
      add_option(["--rewrite", "--rewrite_solution"], lambda {     set_rewrite_solution                                           })
	    add_option(["-w",                            ], lambda { |x| set_root(x)                                                    })
      add_option(["-h", "--help"                   ], lambda {     usage; ExitHelper.exit(0)                                      })
      add_option([""                               ], lambda { |x| puts "Error: invalid argument #{x}"; usage; ExitHelper.exit(1) })
    end

    def usage
      puts "\nUsage: createVSProjects [options]"
      puts " -w <root>           Add a workspace root. Default is current directory."
	    puts "                     This option can be used at multiple times."
	    puts "                     Solution files will be created in the first root directory."
	    puts " --version <year>    Visual Studio version. Currently supported: 2010, 2012 (default) and 2013."
      puts " --rewrite           Rewrites existing solution files instead of appending new projects."
      puts " -h, --help          Print this help."
    end

    def parse_options()
      parse_internal(false)
      @roots << Dir.pwd if @roots.length == 0
    end

    def check_valid_dir(dir)
     if not File.exists?(dir)
        puts "Error: Directory #{dir} does not exist"
        ExitHelper.exit(1)
      end
      if not File.directory?(dir)
        puts "Error: #{dir} is not a directory"
        ExitHelper.exit(1)
      end
    end

    def set_version(v)
	  if v != "2010" and v != "2012" and v != "2013"
	    puts "Error: version must be '2010', '2012' or '2013'"
      ExitHelper.exit(1)
	  end
      @version = v
    end

    def set_rewrite_solution
      @rewriteSolution = true
    end

    def set_root(dir)
      check_valid_dir(dir)
      r = File.expand_path(dir.gsub(/[\\]/,'/'))
      @roots << r if not @roots.include?r
    end

  end

end