from __future__ import annotations
from django.contrib.auth.models import AbstractUser, BaseUserManager
from django.db import models


#
# Управление учётными записями
class UserManager(BaseUserManager):
    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

    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)


class User(AbstractUser):
    GENDER_CHOICES = (
        ('n', 'Не указано'),
        ('m', 'Мужчина'),
        ('f', 'Женщина'),
    )
    # remove default fields
    # first_name = None
    # last_name = None

    first_name = models.CharField(max_length=60, null=True, blank=True, verbose_name='Имя')
    last_name = models.CharField(max_length=60, null=True, blank=True, verbose_name='Фамилия')
    gender = models.CharField(verbose_name='Пол', max_length=10, choices=GENDER_CHOICES, default='n')
    email = models.EmailField(verbose_name='Email Address', unique=True)
    username = models.CharField(max_length=60, verbose_name='Ник')
    bio = models.TextField(blank=True, verbose_name='О себе')
    image = models.URLField(null=True, blank=True, verbose_name='Аватар')
    # avatar = models.ImageField(upload_to='avatar_users/%Y/%m/%d/', null=True, blank=True)

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

    address = models.CharField(verbose_name='Адрес', max_length=255, blank=True, null=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)
    status = models.BooleanField(default=False, verbose_name='Статус')

    EMAIL_FIELD = 'email'  # Указываем поле для аутентификации по email
    USERNAME_FIELD = 'email'  # Указываем поле email как основной идентификатор пользователя
    REQUIRED_FIELDS = []  # Поля, которые должны быть заполнены при создании пользователя

    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