import uuid
from django.contrib.auth.models import AbstractUser, UserManager as BaseUserManager
from django.db import models


class UserManager(BaseUserManager):
    def create_user(self, email, password=None, **extra_fields):
        if not email:
            raise ValueError("Email is required")
        email = self.normalize_email(email)
        user = self.model(email=email, **extra_fields)
        user.set_password(password)
        user.save(using=self._db)
        return user

    def create_superuser(self, email, password=None, **extra_fields):
        extra_fields.setdefault("is_staff", True)
        extra_fields.setdefault("is_superuser", True)
        return self.create_user(email, password, **extra_fields)


class User(AbstractUser):
    class Roles(models.TextChoices):
        BUYER = "buyer", "Buyer"
        OPS = "ops", "Operations"
        ADMIN = "admin", "Administrator"

    id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
    email = models.EmailField(unique=True)
    full_name = models.CharField(max_length=255, blank=True)
    company_name = models.CharField(max_length=255, blank=True)
    role = models.CharField(max_length=20, choices=Roles.choices, default=Roles.BUYER)
    stripe_customer_id = models.CharField(max_length=255, blank=True, null=True)
    keycloak_id = models.CharField(max_length=255, unique=True, null=True, blank=True)
    is_active = models.BooleanField(default=True)
    created_at = models.DateTimeField(auto_now_add=True)
    updated_at = models.DateTimeField(auto_now=True)

    username = None
    first_name = None
    last_name = None

    objects = UserManager()

    USERNAME_FIELD = "email"
    REQUIRED_FIELDS = []

    def __str__(self):
        return self.full_name or self.email

    class Meta:
        db_table = "users"
        verbose_name = "User"
        verbose_name_plural = "Users"
        ordering = ["-created_at"]