from django.db import models
from django.db.models import F
from oauth2_provider.settings import oauth2_settings

from apps.users.models import User
from utils.models import BaseModel
from django.utils.translation import gettext_lazy as _


class EmailQueueQuerySet(models.query.QuerySet):
    pass


class EmailQueue(models.Model):
    title = models.CharField(_('title'), max_length=255)
    user = models.ForeignKey(User, verbose_name=_('user'), on_delete=models.CASCADE)
    last_sent = models.DateTimeField(_('last sent'), auto_now_add=True)

    objects = EmailQueueQuerySet.as_manager()


class EmailQuerySet(models.QuerySet):
    pass


class Email(BaseModel):
    class StateChoices(models.IntegerChoices):
        INIT = 0, _('init')
        START = 1, _('Start')
        DONE = 2, _('done')
        TIMEOUT = 3, _('timeout')
        FAILED = 4, _('failed')

    user = models.ForeignKey(User, on_delete=models.PROTECT, related_name='+')
    application = models.ForeignKey(oauth2_settings.APPLICATION_MODEL, on_delete=models.PROTECT,
                                    related_name='+', null=True, blank=True)

    title = models.CharField(max_length=128)
    message = models.TextField()
    priority = models.IntegerField(default=5)
    extras = models.JSONField(default=dict, null=True, blank=True)
    stats = models.IntegerField(default=StateChoices.INIT, choices=StateChoices.choices)
    queue = models.ForeignKey(EmailQueue, on_delete=models.PROTECT, related_name='+', null=True, blank=True)


    # bulk = models.ForeignKey("BulkEmail", null=True, blank=True, on_delete=models.PROTECT)

    objects = EmailQuerySet.as_manager()

    def __str__(self):
        return self.title

    def send(self):
        from apps.emails.tasks import send_email
        send_email.delay(self.uuid)

    def _send_email(self):
        from django.core.mail import send_mail
        from django.conf import settings
        send_mail(
            self.title,
            self.message,
            settings.EMAIL_HOST_USER,
            ["xdshia49@gmail.com"],
            fail_silently=False,
        )