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#       to you under the Apache License, Version 2.0 (the
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#
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import smtpd
import asyncore

import faulthandler
import tg
from paste.script import command

import allura.tasks
from allura.command import base
from allura.lib import helpers as h

from paste.deploy.converters import asint


class SMTPServerCommand(base.Command):
    min_args = 1
    max_args = 1
    usage = '<ini file>'
    summary = 'Handle incoming emails, routing them to taskd'
    parser = command.Command.standard_parser(verbose=True)
    parser.add_option('-c', '--context', dest='context',
                      help=('The context of the message (path to the project'
                            ' and/or tool'))

    def command(self):
        faulthandler.enable()
        self.basic_setup()
        MailServer((tg.config.get('forgemail.host', '0.0.0.0'),
                    asint(tg.config.get('forgemail.port', 8825))),
                   None)
        asyncore.loop()


class MailServer(smtpd.SMTPServer):

    def process_message(self, peer, mailfrom, rcpttos, data, **kwargs):
        try:
            base.log.info('Msg Received from %s for %s', mailfrom, rcpttos)
            base.log.info(' (%d bytes)', len(data))
            task = allura.tasks.mail_tasks.route_email.post(
                peer=peer, mailfrom=mailfrom, rcpttos=rcpttos,
                data=h.really_unicode(data))
            base.log.info(f'Msg passed along as task {task._id}')
        except Exception:
            base.log.exception('Error handling msg')