import uuid

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


def generate_token():
    return uuid.uuid1().hex + uuid.uuid1().hex


class ApiToken(models.Model):

    token = models.CharField('token', max_length=64, unique=True, default=generate_token)
    purpose = models.CharField('purpose', max_length=128)
    user = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.CASCADE)
    created = models.DateTimeField(auto_now_add=True)

    class Meta:
        db_table = 'api_token'

    def re_generate(self):
        self.token = generate_token()
        self.save()