module Apimaster end

require File.dirname(__FILE__) + '/options'
require File.dirname(__FILE__) + '/manifest'
require File.dirname(__FILE__) + '/simple_logger'

require File.dirname(__FILE__) + '/base'
require File.dirname(__FILE__) + '/command'
require File.dirname(__FILE__) + '/application'

module Apimaster::Generators
  module Scripts

    # Generator scripts handle command-line invocation.  Each script
    # responds to an invoke! class method which handles option parsing
    # and generator invocation.
    class Base
      include Options

      default_options :collision => :ask, :quiet => false

      attr_reader :stdout
      attr_accessor :commands

      def initialize
        @commands ||= {}
        register("new", Application)
      end

      def register name, klass
        @commands[name] = klass
      end

      # Run the generator script.  Takes an array of unparsed arguments
      # and a hash of parsed arguments, takes the generator as an option
      # or first remaining argument, and invokes the requested command.
      def run(args = [], runtime_options = {})
        @stdout = runtime_options[:stdout] || $stdout
        begin
          parse!(args.dup, runtime_options)
        rescue OptionParser::InvalidOption => e
          # Don't cry, script. Generators want what you think is invalid.
        end

        # Look up generator instance and invoke command on it.
        if command = args.shift
          raise "Invalid command name: #{command}" unless commands.key?(command)
          commands[command].new(args).run
        else
          usage
        end
        end
      rescue => e
        stdout.puts e
        stdout.puts "  #{e.backtrace.join("\n  ")}\n" if options[:backtrace]
        raise SystemExit unless options[:no_exit]
      end

      def usage
        stdout.puts "apimaster new your_app_name"
      end
  end
end