from django.db import models
from django.utils import timezone
from django.apps import apps
from django.core.exceptions import ObjectDoesNotExist

import uuid

from . import ModelLog, SideStoreModel, BaseModel

class DataAccess(BaseModel):
    id = models.UUIDField(primary_key=True, default=uuid.uuid4)
    owner = models.ForeignKey('CustomUser', related_name='owned_data', on_delete=models.CASCADE)
    shared_with = models.ManyToManyField('CustomUser', related_name='shared_data')
    model_name = models.CharField(max_length=50)
    model_id = models.UUIDField()
    granted_at = models.DateTimeField(auto_now_add=True)
    last_hierarchy_update = models.DateTimeField(default=timezone.now)

    def create_access_log(self, user, operation):
        """Create a single access log for a specific user"""
        model_class = apps.get_model('tournaments', self.model_name)
        try:
            obj = model_class.objects.get(id=self.model_id)
            store_id = None
            if isinstance(obj, SideStoreModel):
                store_id = obj.store_id

            existing_log = ModelLog.objects.filter(user=user, model_id=self.model_id, operation=operation).first()
            if existing_log:
                existing_log.date = timezone.now()
                existing_log.model_operation = operation
                existing_log.save()
            else:
                ModelLog.objects.create(
                    user=user,
                    model_id=self.model_id,
                    model_name=self.model_name,
                    operation=operation,
                    date=timezone.now(),
                    store_id=store_id
                )
        except ObjectDoesNotExist:
            pass