from django.db import models
from django.conf import settings

class ModelOperation(models.TextChoices):
    POST = 'POST', 'POST'
    PUT = 'PUT', 'PUT'
    DELETE = 'DELETE', 'DELETE'
    GRANT_ACCESS = 'GRANT_ACCESS', 'GRANT_ACCESS'
    REVOKE_ACCESS = 'REVOKE_ACCESS', 'REVOKE_ACCESS'
    SHARED_RELATIONSHIP_SET = 'SHARED_RELATIONSHIP_SET', 'SHARED_RELATIONSHIP_SET'
    SHARED_RELATIONSHIP_REMOVED = 'SHARED_RELATIONSHIP_REMOVED', 'SHARED_RELATIONSHIP_REMOVED'

class ModelLog(models.Model):
    # id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=True)
    # id = models.BigAutoField(primary_key=True)

    # users = models.ManyToManyField(settings.AUTH_USER_MODEL, related_name='model_logs', blank=True)
    user = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.CASCADE, related_name='model_logs')
    model_id = models.UUIDField()
    operation = models.CharField(choices=ModelOperation.choices, max_length=50)
    date = models.DateTimeField(auto_now_add=True)
    model_name = models.CharField(max_length=50)
    store_id = models.CharField(max_length=200, blank=True, null=True)
    device_id = models.CharField(max_length=200, blank=True, null=True)
    count = models.IntegerField(default=0)

    class Meta:
        ordering = ['date']
        indexes = [
            models.Index(fields=['date', 'user']),
            models.Index(fields=['date', 'user', 'device_id']),
        ]

    def formatted_time(self):
        return self.date.strftime('%H:%M:%S.%f')

    def save(self, *args, **kwargs):
        # Round microseconds to milliseconds (3 decimals to match Swift precision)
        if self.date:
            microseconds = round(self.date.microsecond, -3)  # Round to nearest thousand
            self.date = self.date.replace(microsecond=microseconds)
        super().save(*args, **kwargs)

    def data_identifier_dict(self):
        return {
            'model_id': self.model_id,
            'store_id': self.store_id
        }

    def retrieved(self):
        self.count += 1