require 'facets'
require 'rbconfig'
require 'carat/shellcommand'
require 'reap/tasks'

INFO_FILES = [ 'ProjectInfo', 'Reapfile', 'projectinfo', 'reapfile' ]

Reap.register

module Reap
  Version = "2005-10-06"
end

class ReapCommand < ShellCommand

  # Options

  # verbose mode
  def __verbose ; $VERBOSE = true ; end
  alias_method :_V, :__verbose

  # debug mode (under construction)
  def __debug; $DEBUG = true ; end
  alias_method :_D, :__debug

  # pretend mode (under construction)
  def __pretend; $PRETEND = true ; end
  alias_method :_P, :__pretend

  # option to display version
  def __version ; version ; end
  alias_method :_v, :__version

  # option to display help
  def __help ; help ; end
  alias_method :_h, :__help

  # option to display tasks
  def __tasks; tasks ; end
  alias_method :_t, :__tasks

  # option for require
  #def __require(r); @require = r ; end
  #alias_method :_r, :__require

  # Commands

  # default action
  def default
    tasks
  end

  # display version
  def version
    puts "Reap  v.#{Reap::Version}"
    exit 0
  end

  # display help
  def help
    puts HELP
    exit 0
  end

  # list available tasks
  def tasks
    Reap.initialize #_all
    puts
    Reap.tasks.each do |name,task|
      puts "  #{name}".ljust(20) + "#{task.task_desc}"
    end
    puts
    exit 0
  end
  alias_method :ls, :tasks

  # copy the file from lib/data to the current dir.
  def template
    if INFO_FILES.any?{ |f| File.exists?(f) }
      puts "Project file already exists."
      exit 0
    end
    filename = 'ProjectInfo'
    dir = File.join( ::Config::CONFIG['datadir'], 'reap', 'scaffold' )
    f = File.join( dir, filename )
    raise "ProjectInfo template file #{f} is missing." unless File.file?( f )
    # copy
    FileUtils.cp( f, filename )
    puts "#{filename} created. You'll need to fill it out."
    exit 0
  end

  Reap.registry.each do |sym,taskclass|
    define_method(sym) do |*args|
      taskclass.new.run(*args)
    end
  end

end


HELP = <<-HERE

  reap v#{::Reap::Version}

  USAGE: reap [options...] <command> [arguments...]

  COMMANDS:

    scaffold
        Copies a ProjectInfo template into the current
        directory, if it doesn't already exist. If it does
        exist will build the project directory based on it.
        This will not destroy any structure already in place!

    help
        Displays this help information.

  OPTIONS:

    -v --version
        Display the current version.

    -V --verbose
        Provides extra verbose processing information.

    -D --debug
        Provides extra verbose processing information.

    -h --help
        Display this help information.

HERE