import uuid
from django.db import models
from django.contrib.auth.models import AbstractUser, Group, Permission
from django.core.validators import RegexValidator, MinLengthValidator, MaxValueValidator, MinValueValidator

from django.conf import settings
from django.db import models
from django.utils import timezone
from datetime import timedelta

from vontor_cz.models import SoftDeleteModel

from django.contrib.auth.models import UserManager

import logging

logger = logging.getLogger(__name__)



class CustomUser(SoftDeleteModel, AbstractUser):
    groups = models.ManyToManyField(
        Group,
        related_name="customuser_set",  # <- přidáš related_name
        blank=True,
        help_text="The groups this user belongs to.",
        related_query_name="customuser",
    )
    user_permissions = models.ManyToManyField(
        Permission,
        related_name="customuser_set",  # <- přidáš related_name
        blank=True,
        help_text="Specific permissions for this user.",
        related_query_name="customuser",
    )

    class Role(models.TextChoices):
        ADMIN = "admin", "Admin"
        MANAGER = "mod", "Moderator"
        CUSTOMER = "regular", "Regular"

    role = models.CharField(max_length=20, choices=Role.choices, default=Role.CUSTOMER)

    

    phone_number = models.CharField(
        null=True,
        blank=True,

        unique=True,
        max_length=16,
        validators=[RegexValidator(r'^\+?\d{9,15}$', message="Zadejte platné telefonní číslo.")]
    )
    
    email_verified = models.BooleanField(default=False)
    email = models.EmailField(unique=True, db_index=True)

    gdpr = models.BooleanField(default=False)
    is_active = models.BooleanField(default=False)

    create_time = models.DateTimeField(auto_now_add=True)


    city = models.CharField(null=True, blank=True, max_length=100)
    street = models.CharField(null=True, blank=True, max_length=200)

    postal_code = models.CharField(
        blank=True,
        null=True,

        max_length=5,
        validators=[
            RegexValidator(
                regex=r'^\d{5}$',
                message="Postal code must contain exactly 5 digits.",
                code='invalid_postal_code'
            )
        ]
    )

    USERNAME_FIELD = "username"
    REQUIRED_FIELDS = [
        "email"
    ]


    def __str__(self):
        return f"{self.email} at {self.create_time.strftime('%d-%m-%Y %H:%M:%S')}"
    
    def delete(self, *args, **kwargs):
        self.is_active = False

        return super().delete(*args, **kwargs)
    
    def save(self, *args, **kwargs):
        if self.pk is None: # if newely created user

            from django.contrib.auth.models import Group
            group, _ = Group.objects.get_or_create(name=self.role)
            self.groups.set([group])

            if self.is_superuser or self.role == "admin":
                self.is_active = True

                if self.role == 'admin':
                    self.is_staff = True
                    self.is_superuser = True

                if self.is_superuser:
                    self.role = 'admin'

            else:
                self.is_staff = False
        
        return super().save(*args, **kwargs)