from django.db.models.signals import post_save,pre_delete
from django.dispatch import receiver
from eventplanner.models import Event, EventParticipation
from django.contrib.auth.models import User
from eventplanner_gcal.google_sync import  getServiceObject, syncFromLocalToGoogle,\
                                           createGCalEvent, deleteGCalEvent, updateGCalEvent, onGcalEventCreated

import logging
logger = logging.getLogger( __name__ )


#@receiver( post_save, sender=User )
#def user_changed( **kwargs ):
#    logger.info("Synchronizing with google - user information changed")
#    syncFromLocalToGoogle( getServiceObject() )


@receiver( post_save,sender= Event)
def event_post_save_handler( **kwargs):
    event = kwargs['instance']
    created = kwargs['created']
    if created:
        logger.info("Creating Gcal event")
        response = createGCalEvent( getServiceObject(), event ).execute()
        onGcalEventCreated( None, response, None )
    else:
        logger.info( "Updating Gcal event")
        updateGCalEvent( getServiceObject(),event ).execute()



@receiver( pre_delete,sender= Event)
def event_pre_delete_handler( **kwargs):
    event = kwargs['instance']
    logger.info ("Deleting GCAL event")
    deleteGCalEvent( getServiceObject(), event ).execute()


@receiver( post_save, sender=EventParticipation )
def participation_post_save_handler( **kwargs):
    participation = kwargs['instance']
    logger.info("Participation post save -> update gcal")
    updateGCalEvent( getServiceObject(), participation.event ).execute()