from django.db import models
from django.db.models.signals import post_save
from django.dispatch import receiver
from decimal import Decimal
from django.utils import timezone

from dashboard.models import ActivityLog
from .models import *


@receiver(post_save, sender=MaintenanceRequest)
def log_maintenance_status_change(sender, instance, **kwargs):
   if 'update_fields' in kwargs and 'status' in kwargs['update_fields']:
       ActivityLog.objects.create(
           user=instance.assigned_to,
           action_type='update',
           description=f"Maintenance request {instance.id} status changed to {instance.get_status_display()}",
           app_name='facility_management',
           object_repr=str(instance)
       )