from __future__ import annotations
from django.contrib.auth.models import AbstractUser, BaseUserManager
from django.db import models
# Управление учётными записями
class UserManager(BaseUserManager):
    # Создание пользователя
    def create_user(
            self, email: str, password: str | None = None, **other_fields
    ) -> User:
        user = User(email=email, **other_fields)
        if password:
            user.set_password(password)
        else:
            user.set_unusable_password()
        user.save()
        return user
    # Создание супер пользователя
    def create_superuser(self, email: str, password: str | None = None, **other_fields) -> User:
        other_fields.setdefault("is_staff", True)
        other_fields.setdefault("is_superuser", True)
        other_fields.setdefault("is_active", True)
        if other_fields.get("is_staff") is not True:
            raise ValueError("Superuser must be assigned to is_staff=True.")
        if other_fields.get("is_superuser") is not True:
            raise ValueError("Superuser must be assigned to is_superuser=True.")
        return self.create_user(email, password, **other_fields)
# Модель учётной записи
class User(AbstractUser):
    GENDER_CHOICES = (
        ('n', 'Не указано'),
                ('m', 'Мужчина'),
                ('f', 'Женщина'),
    )
    first_name: str = models.CharField(max_length=60, null=True, blank=True, verbose_name='Имя')
    last_name: str  = models.CharField(max_length=60, null=True, blank=True, verbose_name='Фамилия')
    gender: str = models.CharField(verbose_name='Пол', max_length=10, choices=GENDER_CHOICES, default='n')
    email: str = models.EmailField(verbose_name='Email Address', unique=True)
    username: str = models.CharField(max_length=60, verbose_name='Ник')
    bio: str = models.TextField(blank=True, verbose_name='О себе')
    image: str | None = models.URLField(null=True, blank=True, verbose_name='Аватар')

    followers = models.ManyToManyField("self", blank=True, symmetrical=False, verbose_name='Подписчики')

    address: str = models.CharField(verbose_name='Адрес', max_length=255, blank=True, null=True)
    #avatar = models.ImageField(upload_to=avatar_upload_path, null=True, blank=True)
    #country = models.ForeignKey('chatroom.Country', on_delete=models.SET_NULL, null=True)
    #state = models.ForeignKey('chatroom.State', on_delete=models.SET_NULL, null=True)
    date_joined = models.DateTimeField(verbose_name='Дата регистрации', blank=True, null=True, auto_now_add=True)
    last_updated = models.DateTimeField(verbose_name='Последнее обновление', blank=True, null=True, auto_now=True)
    last_login = models.DateTimeField(verbose_name='Последняя авторизация', blank=True, null=True, auto_now=True)

    EMAIL_FIELD = "email"
    USERNAME_FIELD = "email"
    REQUIRED_FIELDS: list[str] = []

    objects = UserManager()

    def get_full_name(self) -> str:
        if self.first_name and self.last_name:
            return f"{self.first_name} {self.last_name}"
        else:
            return self.username

    def get_short_name(self) -> str:
        if self.first_name and self.last_name:
            return f"{self.first_name[0]}{self.last_name}"
        else:
            return self.username