from django.contrib.auth.base_user import BaseUserManager
from django.contrib.auth.models import AbstractUser
from django.db import models
from django.utils.text import slugify


class UserManager(BaseUserManager):
    use_in_migrations = True

    def create_user(self, email, password=None, **extra_fields):
        if not email:
            raise ValueError("The Email field must be set")
        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)
        extra_fields.setdefault("is_active", True)

        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(unique=True)
    phone_number = models.CharField(max_length=32, blank=True)
    is_vendor = models.BooleanField(default=False)
    is_customer = models.BooleanField(default=True)

    USERNAME_FIELD = "email"
    REQUIRED_FIELDS: list[str] = []
    objects = UserManager()

    def __str__(self) -> str:
        return self.email


class VendorProfile(models.Model):
    user = models.OneToOneField(User, on_delete=models.CASCADE, related_name="vendor_profile")
    business_name = models.CharField(max_length=255)
    slug = models.SlugField(max_length=255, unique=True, blank=True)
    description = models.TextField(blank=True)
    contact_phone = models.CharField(max_length=32, blank=True)
    contact_email = models.EmailField(blank=True)
    address_line1 = models.CharField(max_length=255, blank=True)
    address_line2 = models.CharField(max_length=255, blank=True)
    city = models.CharField(max_length=100, blank=True)
    state = models.CharField(max_length=100, blank=True)
    postal_code = models.CharField(max_length=32, blank=True)
    country = models.CharField(max_length=100, blank=True)
    created_at = models.DateTimeField(auto_now_add=True)
    updated_at = models.DateTimeField(auto_now=True)

    def save(self, *args, **kwargs):
        if not self.slug:
            self.slug = slugify(self.business_name)
        super().save(*args, **kwargs)

    def __str__(self) -> str:
        return self.business_name


class CustomerProfile(models.Model):
    user = models.OneToOneField(User, on_delete=models.CASCADE, related_name="customer_profile")
    preferred_contact_method = models.CharField(max_length=32, blank=True)
    emergency_contact_name = models.CharField(max_length=255, blank=True)
    emergency_contact_phone = models.CharField(max_length=32, blank=True)
    created_at = models.DateTimeField(auto_now_add=True)
    updated_at = models.DateTimeField(auto_now=True)

    def __str__(self) -> str:
        return f"Customer profile: {self.user.email}"