class PhusionPassenger::Standalone::Main

def self.each_command
	COMMANDS.each do |command_spec|
		command_name = command_spec[0]
		filename     = command_name.sub(/-/, '_') + "_command"
		require "phusion_passenger/standalone/#{filename}"
		command_class = Standalone.const_get(command_spec[1])
		yield(command_name, command_class)
	end
end

def self.run!(argv)
	new.run!(argv)
end

def command_exists?(name)
	return COMMANDS.any? do |element|
		element[0] == name
	end
end

def run!(argv)
	command = argv[0]
	if command.nil? || command == '-h' || command == '--help'
		run_command('help')
		exit
	elsif command == '-v' || command == '--version'
		run_command('version')
		exit
	elsif command_exists?(command)
		begin
			run_command(command, argv[1..-1])
		rescue => e
			if defined?(OptionParser::ParseError) && e.is_a?(OptionParser::ParseError)
				puts e
				puts
				puts "Please see '--help' for valid options."
				exit 1
			elsif defined?(ConfigFile::DisallowedContextError) && e.is_a?(ConfigFile::DisallowedContextError)
				puts "*** Error in #{e.filename} line #{e.line}:"
				puts e
				exit 1
			else
				raise e
			end
		end
	else
		STDERR.puts "Unknown command '#{command}'. Please type --help for options."
		exit 1
	end
end

def run_command(name, args = [])
	Main.each_command do |command_name, command_class|
		if command_name == name
			return command_class.new(args).run
		end
	end
	raise ArgumentError, "Command '#{name}' doesn't exist"
end