require "file_utils"
require "path"
require "io/file_descriptor"
require "option_parser"
require "process"

module Loon
  module Command
    class Cd
      private property options : Array(String)

      def initialize(@options : Array(String))
      end

      def run
        OptionParser.parse(options) do |parser|
          parser.banner = <<-STR
          Usage: loon cd [name with owner]

          Options:
          STR

          parser.on("-h", "--help", "Show this help") { Loon.ui.print parser }

          parser.unknown_args do |args|
            name_with_owner = args.shift
            repo = Loon::Git::Repository.from(name_with_owner)
            path = Config.current.resolve(repo)
            unless Dir.exists?(path)
              next Loon.ui.print "Path not found: #{path}"
            end
            IO::FileDescriptor.new(9) << "chdir:#{path}"
          rescue IO::Error
            # TODO(andremedeiros): Make this better
            Loon.ui.print "Error: Finalizer can't be written. Have you run me from the shell?"
          rescue IndexError
            Loon.ui.print parser
          end
        end
      end
    end
  end
end