from django.db import models
from django.contrib.auth.models import AbstractUser
from .managers import CustomUserManager


class CustomUser(AbstractUser):

    mobile = models.CharField(max_length=15, null=True, blank=True, unique=True,
                              help_text='Users mobile phone')
    verification_code = models.CharField(max_length=10, unique=True, null=True, blank=True,
                                         help_text='Verification code for bot account')
    user_created = models.DateField(editable=False, auto_now_add=True, verbose_name='User created',
                                    help_text='Date when user has been created')
    activation_token = models.CharField(max_length=20, null=True, blank=True,
                                        help_text='Activation token for any user')
    email = models.EmailField(max_length=30, unique=True, blank=False, null=True, help_text='User email')
    USERNAME_FIELD = 'username'
    REQUIRED_FIELDS = ['email']
    objects = CustomUserManager()

    def __str__(self):
        return self.username


# # ----- ToDO: Enable this to email verification --------
#
# from django.dispatch import receiver
# from django.conf import settings
# from .tasks import mail_send
# from server.settings.components.logging import main_logger
#
#
# def user_tokens() -> dict:
#
#     tokens_dict = dict()
#
#     def generate_token(token_length: int) -> str:
#         from random import choice
#         token_chars = 'QWERTYUIOPASDFGHJKLZXCVBNMqwertyuiopasdfghjklzxcvbnm1234567890'
#         generated_token = ''
#         for i in range(token_length):
#             generated_token += choice(token_chars)
#         return generated_token
#
#     tokens_dict['activation_token'] = generate_token(token_length=20)
#
#     return tokens_dict
#
#
# @receiver(models.signals.post_save, sender=CustomUser)
# def post_save_user_signal_handler(sender, instance, created, **kwargs):
#
#     if created and instance.username != 'admin':
#         instance.activation_token = user_tokens()['activation_token']
#         instance.save()
#         try:
#             user = CustomUser.objects.get(username=instance.username)
#             email = instance.email
#             subject = 'Welcome to book bot administration'
#             username = f'{instance.first_name} {instance.last_name}'
#             text = f'https://{settings.DOMAIN_NAME}/accounts/complete_registration/{user.activation_token}'
#
#             mail_send(to_email=email, subject=subject, username=username, text_content=text)
#         except Exception as e:
#             main_logger.error(f'Email not send to user {instance.username}. Reason: {e}')