class Xcodeproj::Command

def self.banner
  commands = ['target-diff', 'project-diff', 'show']
  banner   = "To see help for the available commands run:\n\n"
  banner + commands.map { |cmd| "  * $ xcodeproj #{cmd.green} --help" }.join("\n")
end

def self.options
  [
    ['--help',     'Show help information'],
    # ['--silent',   'Print nothing'],
    # ['--no-color', 'Print output without color'],
    # ['--verbose',  'Print more information while working'],
    ['--version',  'Prints the version of CocoaPods'],
  ]
end

def self.parse(*argv)
  argv = ARGV.new(argv)
  if argv.option('--version')
    puts VERSION
    exit!(0)
  end
  show_help = argv.option('--help')
  String.send(:define_method, :colorize) { |string , _| string } if argv.option( '--no-color' )
  command_class = case command_argument = argv.shift_argument
  when 'target-diff'  then TargetDiff
  when 'project-diff' then ProjectDiff
  when 'show'         then Show
  end
  if command_class.nil?
    raise Help.new(self, argv, command_argument)
  elsif show_help
    raise Help.new(command_class, argv)
  else
    command_class.new(argv)
  end
end

def self.run(*argv)
  sub_command = parse(*argv)
  sub_command.run
rescue Interrupt
  puts "[!] Cancelled".red
  #Config.instance.verbose? ? raise : exit(1)
  exit(1)
rescue Exception => e
  puts e.message
  unless e.is_a?(Informative)
    puts *e.backtrace
  end
  exit 1
end

def initialize(argv)
  raise Help.new(self.class, argv)
end

def xcodeproj
  @xcodeproj ||= Project.new(xcodeproj_path)
end

def xcodeproj_path
  unless @xcodeproj_path
    projects = Dir.glob('*.xcodeproj')
    if projects.size == 1
      xcodeproj_path = projects.first
    elsif projects.size > 1
      raise Informative, 'There are more than one Xcode project documents ' \
                         'in the current working directory. Please specify ' \
                         'which to use with the `--project` option.'
    else
      raise Informative, 'No Xcode project document found in the current ' \
                         'working directory. Please specify which to use ' \
                         'with the `--project` option.'
    end
    @xcodeproj_path = File.expand_path(xcodeproj_path)
  end
  @xcodeproj_path
end