MyUser

from django.conf import settings
from django.contrib.auth.models import (
    BaseUserManager, AbstractBaseUser
)
from django.contrib import messages
from django.core.mail import send_mail
from django.conf import settings
from django.core.validators import RegexValidator
from django.db import models
from django.db.models.signals import post_save
from .utils import code_generator

USERNAME_REGEX = '^[a-zA-Z0-9.+-]*$'

class MyUserManager(BaseUserManager):
    def create_user(self, username, email, password=None):
        if not email:
            raise ValueError('Users must have an email address')

        user = self.model(
            username = username,
            email=self.normalize_email(email),
        )

        user.set_password(password)
        user.save(using=self._db)
        return user

    def create_superuser(self, username, email, password):
        user = self.create_user(
            username,
            email,
            password=password,
        )
        user.is_admin = True
        user.is_staff = True
        user.save(using=self._db)
        return user


class MyUser(AbstractBaseUser):
    username = models.CharField(
                max_length=255, 
                validators=[
                    RegexValidator(
                        regex = USERNAME_REGEX,
                        message = 'Username must be Alpahnumeric or contain any of the following: ". @ + -" ',
                        code='invalid_username'
                    )],
                unique=True,)
    email = models.EmailField(
        verbose_name='email address',
        max_length=255,
        unique=True, )
    zipcode   = models.CharField(max_length=120, default="92660")
    is_active = models.BooleanField(default=True)
    is_staff = models.BooleanField(default=False)
    is_admin = models.BooleanField(default=False)

    objects = MyUserManager()

    USERNAME_FIELD = 'username'
    REQUIRED_FIELDS = ['email']

    def get_full_name(self):
        # The user is identified by their email address
        return self.email

    def get_short_name(self):
        # The user is identified by their email address
        return self.email

    def __str__(self):              # __unicode__ on Python 2
        return self.email

    def has_perm(self, perm, obj=None):
        "Does the user have a specific permission?"
        # Simplest possible answer: Yes, always
        return True

    def has_module_perms(self, app_label):
        "Does the user have permissions to view the app `app_label`?"
        # Simplest possible answer: Yes, always
        return True

class ActivationProfile(models.Model):
    user    = models.ForeignKey(settings.AUTH_USER_MODEL)
    key     = models.CharField(max_length=120)
    expired = models.BooleanField(default=False)

    def save(self, *args, **kwargs):
        self.key = code_generator()
        super(ActivationProfile, self).save(*args, **kwargs)

def post_save_activation_receiver(sender, instance, created, *args, **kwargs):
    if created:
        #send email
        subject = 'Registration'
        message = "http://127.0.0.1:8000/activate/{0}".format(instance.key)
        from_email = settings.EMAIL_HOST_USER
        recipient_list = ['UserEmail']
        print(recipient_list)

        send_mail(subject, message, from_email, recipient_list,fail_silently=True)

post_save.connect(post_save_activation_receiver, sender=ActivationProfile)