from django.db import models

from authentication.models import ExtendedUser


class MessageTemplate(models.Model):
    name = models.CharField(max_length=255)
    message = models.TextField()
    created = models.DateTimeField(auto_now_add=True)
    marked_confidential = models.BooleanField(default=False)
    marked_required = models.BooleanField(default=False)  # may not be deleted

    def __str__(self):
        return self.name


class UserNotificationChannel(models.Model):
    user = models.ForeignKey(ExtendedUser, models.CASCADE)
    channel_type = models.CharField(choices=[('telegram', 'telegram'), ('email', 'email')], max_length=255)
    channel_target = models.CharField(max_length=255)
    event_filter = models.CharField(max_length=255)
    active = models.BooleanField(default=True)
    created = models.DateTimeField(auto_now_add=True)

    def validate_constraints(self, exclude=None):  # TODO: email -> emailaddress, telegram -> chatid
        return True

    def __str__(self):
        return self.user.username + '(' + self.channel_type + ')'