require 'addressable/uri'

module DAV4Rack

  # adds a bit of parsing logic around a header URI or path value
  class Uri

    attr_reader :host, :path, :path_info, :script_name

    def initialize(uri_or_path, script_name: nil)
      # more than one leading slash confuses Addressable::URI, resulting e.g.
      # with //remote.php/dav/files in a path of /dav/files with a host
      # remote.php.
      @uri_or_path = uri_or_path.to_s.strip.sub %r{\A/+}, '/'

      @script_name = script_name
      parse
    end

    def to_s
      @uri_or_path
    end

    private

    def parse
      uri = Addressable::URI.parse @uri_or_path

      @host = uri.host
      @path = Addressable::URI.unencode uri.path

      if @script_name
        if @path =~ /\A(?<path>#{Regexp.escape @script_name}(?<path_info>\/.*))\z/
          @path_info = $~[:path_info]
        end
      else
        @path_info = @path
      end
    end

  end
end