from django.contrib.auth.models import AbstractUser
from django.db import models
from django.utils.translation import gettext_lazy as _
from django.contrib.auth.base_user import BaseUserManager


class UserRole(models.Model):
    title = models.CharField(max_length=255, null=True, blank=True)

    def __str__(self):
        return self.title


class UserManager(BaseUserManager):
    """
    Custom user model manager where email is the unique identifiers
    for authentication instead of usernames.
    """

    def create_user(self, email, password, **extra_fields):
        """
        Create and save a user with the given email and password.
        """
        if not email:
            raise ValueError(_("The Email must be set"))
        email = self.normalize_email(email)
        user = self.model(email=email, **extra_fields)
        user.set_password(password)
        user.save()
        return user

    def create_superuser(self, email, password, **extra_fields):
        """
        Create and save a SuperUser with the given email and password.
        """
        admin_role = UserRole.objects.filter(title="Admin").first()
        extra_fields.setdefault("is_staff", True)
        extra_fields.setdefault("is_superuser", True)
        extra_fields.setdefault("is_active", True)
        extra_fields.setdefault("role_id", admin_role.id)

        if extra_fields.get("is_staff") is not True:
            raise ValueError(_("Superuser must have is_staff=True."))
        if extra_fields.get("is_superuser") is not True:
            raise ValueError(_("Superuser must have is_superuser=True."))
        return self.create_user(email, password, **extra_fields)


class User(AbstractUser):
    username = None
    email = models.EmailField(_("email address"), unique=True)
    role = models.ForeignKey(UserRole, on_delete=models.RESTRICT, null=True, blank=True)
    email_verification = models.BooleanField(default=False, null=True, blank=True)
    profile_pic = models.ImageField(upload_to="users/", blank=True, null=True)

    USERNAME_FIELD = "email"
    REQUIRED_FIELDS = []

    objects = UserManager()

    def __str__(self):
        return self.email