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import socket

from smtplib import SMTPException

from django.core.management.base import BaseCommand, CommandError

from django.db.utils import IntegrityError

from astakos.im.functions import invite

from ._common import get_user

class Command(BaseCommand):

    args = "<inviter id or email> <email> <real name>"

    help = "Invite a user"

    def handle(self, *args, **options):

        if len(args) != 3:

            raise CommandError("Invalid number of arguments")

        inviter = get_user(args[0])

        if not inviter:

            raise CommandError("Unknown inviter")

        if inviter.invitations > 0:

            email = args[1]

            realname = args[2]

            try:

                invite(inviter, email, realname)

                self.stdout.write("Invitation sent to '%s'\n" % (email,))

            except (SMTPException, socket.error) as e:

                raise CommandError("Error sending the invitation")

            except IntegrityError, e:

                raise CommandError("There is already an invitation for %s" % (email,))

        else:

            raise CommandError("No invitations left")