# -*- coding: utf-8 -*-

import logging

from renkanmanager import settings as renkan_settings

from renkanmanager.models import Revision

from django.db.models.signals import post_save

from django.dispatch import receiver

logger = logging.getLogger(__name__)

@receiver(post_save, sender=Revision)

def revision_post_save(sender, instance, created, raw, using, update_fields, **kwargs):

    renkan = instance.parent_renkan

    parent_revisions = renkan.revisions.all()

    logger.debug("REVISIONS %r, INSTANCE %r, CURRENT %r", parent_revisions, instance, renkan.current_revision)

    if (not renkan.current_revision or renkan_settings.RENKAN_AUTO_CURRENT_REVISION) and parent_revisions.count() >= 1 and renkan.current_revision !=  parent_revisions[0]:

        logger.debug("CHANGE CURRENT REVISION OLD: %r , NEW: %r", renkan.current_revision, parent_revisions[0])

        renkan.current_revision = parent_revisions[0]

        renkan.save()