from django.core.management.base import BaseCommand

import sys

import smtpd

import asyncore

class Command(BaseCommand):

    help = "Starts a test mail server for development."

    args = '[optional port number or ippaddr:port]'

    requires_model_validation = False

    def handle(self, addrport='', *args, **options):

        if args:

            raise CommandError('Usage is runserver %s' % self.args)

        if not addrport:

            addr = ''

            port = '1025'

        else:

            try:

                addr, port = addrport.split(':')

            except ValueError:

                addr, port = '', addrport

        if not addr:

            addr = '127.0.0.1'

        if not port.isdigit():

            raise CommandError("%r is not a valid port number." % port)

        else:

            port = int(port)

        quit_command = (sys.platform == 'win32') and 'CTRL-BREAK' or 'CONTROL-C'

        def inner_run():

            print "Now accepting mail at %s:%s" % (addr, port)

            server = smtpd.DebuggingServer((addr,port), None)

            asyncore.loop()

        try: 

            inner_run()

        except KeyboardInterrupt:

            pass