from django.db import models
from django.contrib.auth import get_user_model

from apps.models import App

class Panic(models.Model):
    created_by_user = models.ForeignKey(get_user_model(), on_delete=models.SET_NULL, null=True, blank=True, related_name="panics_created")
    created_by_app = models.ForeignKey(App, on_delete=models.SET_NULL, null=True, blank=True, related_name="panics_created")
    created_at = models.DateTimeField(auto_now_add=True)
    create_reason = models.TextField()
    resolved_by_user = models.ForeignKey(get_user_model(), on_delete=models.SET_NULL, null=True, blank=True, related_name="panics_resolved")
    resolved_by_app = models.ForeignKey(App, on_delete=models.SET_NULL, null=True, blank=True, related_name="panics_resolved")
    resolved_at = models.DateTimeField(null=True, blank=True)
    resolve_reason = models.TextField(null=True, blank=True)

    def __str__(self):
        return f"{self.user.username} at {self.created_at}"

    @classmethod
    def active(cls):
        try:
            return cls.objects.get(resolved_at__isnull=True)
        except cls.DoesNotExist:
            return None