import uuid
from datetime import datetime
from django.conf import settings
from django.contrib.auth.models import Permission
from decimal import Decimal
from django.urls import reverse
from django.utils.text import slugify
from django.utils import timezone
from django.core.validators import MinValueValidator
import hashlib
from django.db import models
from datetime import timedelta
from django.contrib.auth.models import User, UserManager
from django.utils.translation import gettext_lazy as _
from django_ledger.models import (
    VendorModel,
    EntityModel,
    ItemModel,
    CustomerModel,
    JournalEntryModel,
    LedgerModel,
)
from django_ledger.io.io_core import get_localdate
from django.core.exceptions import ValidationError
from phonenumber_field.modelfields import PhoneNumberField
from django.utils.timezone import now
from django.contrib.auth.models import Group

from inventory.utils import get_user_type, make_random_password, to_dict
from .mixins import LocalizedNameMixin
from django_ledger.models import (
    EstimateModel,
    InvoiceModel,
    AccountModel,
    EntityManagementModel,
    PurchaseOrderModel,
    ItemTransactionModel,
    BillModel,
)
from django.contrib.contenttypes.fields import GenericForeignKey
from django.contrib.contenttypes.models import ContentType
from django.core.serializers.json import DjangoJSONEncoder
# from appointment.models import StaffMember
from plans.quota import get_user_quota
from plans.models import UserPlan
from django.db.models import Q
from imagekit.models import ImageSpecField
from imagekit.processors import ResizeToFill
# from plans.models import AbstractPlan
# from simple_history.models import HistoricalRecords
from plans.models import Invoice

class Base(models.Model):
    id = models.UUIDField(
        unique=True,
        editable=False,
        default=uuid.uuid4,
        primary_key=True,
        verbose_name=_("Primary Key"),
    )
    slug = models.SlugField(
        null=True,
        blank=True,
        unique=True,
        verbose_name=_("Slug"),
        help_text=_(
            "Slug for the object. If not provided, it will be generated automatically."
        ),
    )
    created_at = models.DateTimeField(auto_now_add=True, verbose_name=_("Created At"))
    updated_at = models.DateTimeField(auto_now=True, verbose_name=_("Updated At"))

    def clean(self):
        if isinstance(self.id, str):
            try:
                uuid.UUID(self.id)
            except ValueError:
                raise ValidationError({"id": "Invalid UUID format"})
        super().clean()

    class Meta:
        abstract = True


class DealerUserManager(UserManager):
    def create_user_with_dealer(
        self,
        email,
        password,
        dealer_name,
        arabic_name,
        crn,
        vrn,
        address,
        **extra_fields,
    ):
        user = self.create_user(
            username=email, email=email, password=password, **extra_fields
        )
        Dealer.objects.create(
            user=user,
            name=dealer_name,
            arabic_name=arabic_name,
            crn=crn,
            vrn=vrn,
            address=address,
            **extra_fields,
        )
        return user


class DealersMake(models.Model):
    """
    Represents the relationship between a car dealer and a car make.

    This model establishes a many-to-many relationship between dealers and
    car makes, allowing each dealer to be associated with multiple car makes
    and each car make to be associated with multiple dealers. It also keeps
    track of the date and time when the relationship was added.

    :ivar dealer: The dealer associated with the car make.
    :type dealer: ForeignKey
    :ivar car_make: The car make associated with the dealer.
    :type car_make: ForeignKey
    :ivar added_at: The date and time when the relationship was created.
    :type added_at: DateTimeField
    """

    dealer = models.ForeignKey(
        "Dealer", on_delete=models.CASCADE, related_name="dealer_makes"
    )
    car_make = models.ForeignKey(
        "CarMake", on_delete=models.CASCADE, related_name="car_dealers"
    )
    added_at = models.DateTimeField(auto_now_add=True)

    class Meta:
        unique_together = ("dealer", "car_make")  # Prevents duplicate entries

    def __str__(self):
        return f"{self.dealer.name} - {self.car_make.name}"


class StaffUserManager(UserManager):
    def create_user_with_staff(
        self,
        email,
        password,
        name,
        arabic_name,
        phone_number,
        staff_type,
        **extra_fields,
    ):
        user = self.create_user(
            username=email, email=email, password=password, **extra_fields
        )
        Staff.objects.create(
            user=user,
            name=name,
            arabic_name=arabic_name,
            phone_number=phone_number,
            staff_type=staff_type,
            **extra_fields,
        )
        return user


class EmailStatus(models.TextChoices):
    SENT = "SENT", "Sent"
    FAILED = "FAILED", "Failed"
    DELIVERED = "DELIVERED", "Delivered"
    OPEN = "OPEN", "Open"
    DRAFT = "DRAFT", "Draft"


class UnitOfMeasure(models.TextChoices):
    EACH = "EA", "Each"
    PAIR = "PR", "Pair"
    SET = "SET", "Set"
    GALLON = "GAL", "Gallon"
    LITER = "L", "Liter"
    METER = "M", "Meter"
    KILOGRAM = "KG", "Kilogram"
    HOUR = "HR", "Hour"
    BOX = "BX", "Box"
    ROLL = "RL", "Roll"
    PACKAGE = "PKG", "Package"
    DOZEN = "DZ", "Dozen"
    SQUARE_METER = "SQ_M", "Square Meter"
    PIECE = "PC", "Piece"
    BUNDLE = "BDL", "Bundle"


class VatRate(models.Model):
    dealer = models.ForeignKey("Dealer", on_delete=models.CASCADE)
    rate = models.DecimalField(max_digits=5, decimal_places=2, default=Decimal("0.15"))
    is_active = models.BooleanField(default=True)
    created_at = models.DateTimeField(auto_now_add=True)

    def __str__(self):
        return f"Rate: {self.rate}%"


class CarType(models.IntegerChoices):
    CAR = 1, _("Car")
    LIGHT_COMMERCIAL = 2, _("Light Commercial")
    HEAVY_DUTY_TRACTORS = 3, _("Heavy-Duty Tractors")
    TRAILERS = 4, _("Trailers")
    MEDIUM_TRUCKS = 5, _("Medium Trucks")
    BUSES = 6, _("Buses")
    MOTORCYCLES = 20, _("Motorcycles")
    BUGGY = 21, _("Buggy")
    MOTO_ATV = 22, _("Moto ATV")
    SCOOTERS = 23, _("Scooters")
    KARTING = 24, _("Karting")
    ATV = 25, _("ATV")
    SNOWMOBILES = 26, _("Snowmobiles")


class CarMake(models.Model, LocalizedNameMixin):
    id_car_make = models.AutoField(primary_key=True)
    name = models.CharField(max_length=255, blank=True, null=True)
    slug = models.SlugField(max_length=255, unique=True, blank=True, null=True)
    arabic_name = models.CharField(max_length=255, blank=True, null=True)
    logo = models.ImageField(_("logo"), upload_to="car_make", blank=True, null=True,default="user-logo.jpg")
    is_sa_import = models.BooleanField(default=False)
    car_type = models.SmallIntegerField(choices=CarType.choices, blank=True, null=True)

    def save(self, *args, **kwargs):
        if not self.slug:
            base_slug = slugify(self.name)
            self.slug = base_slug
            counter = 1

            while (
                self.__class__.objects.filter(slug=self.slug)
                .exclude(pk=self.pk)
                .exists()
            ):
                self.slug = f"{base_slug}-{counter}"
                counter += 1
        super().save(*args, **kwargs)

    def __str__(self):
        return self.name

    class Meta:
        verbose_name = _("Make")
        indexes = [
            models.Index(fields=["name"], name="car_make_name_idx"),
            models.Index(fields=["is_sa_import"], name="car_make_sa_import_idx"),
            models.Index(fields=["car_type"], name="car_make_type_idx"),
        ]


class CarModel(models.Model, LocalizedNameMixin):
    id_car_model = models.AutoField(primary_key=True)
    id_car_make = models.ForeignKey(CarMake, models.DO_NOTHING, db_column="id_car_make")
    name = models.CharField(max_length=255, blank=True, null=True)
    arabic_name = models.CharField(max_length=255, blank=True, null=True)
    slug = models.SlugField(max_length=255, unique=True, blank=True, null=True)

    def save(self, *args, **kwargs):
        if not self.slug:
            base_slug = slugify(self.name)
            self.slug = base_slug
            counter = 1

            while (
                self.__class__.objects.filter(slug=self.slug)
                .exclude(pk=self.pk)
                .exists()
            ):
                self.slug = f"{base_slug}-{counter}"
                counter += 1
        super().save(*args, **kwargs)

    def __str__(self):
        return self.name

    class Meta:
        verbose_name = _("Model")
        indexes = [
            models.Index(fields=["id_car_make"], name="car_model_make_idx"),
            models.Index(fields=["name"], name="car_model_name_idx"),
            models.Index(
                fields=["id_car_make", "name"], name="car_model_make_name_idx"
            ),
        ]


class CarSerie(models.Model, LocalizedNameMixin):
    id_car_serie = models.AutoField(primary_key=True)
    id_car_model = models.ForeignKey(
        CarModel, models.DO_NOTHING, db_column="id_car_model"
    )
    name = models.CharField(max_length=255, blank=True, null=True)
    arabic_name = models.CharField(max_length=255, blank=True, null=True)
    year_begin = models.IntegerField(blank=True, null=True)
    year_end = models.IntegerField(blank=True, null=True)
    generation_name = models.CharField(max_length=255, blank=True, null=True)
    slug = models.SlugField(max_length=255, unique=True, blank=True, null=True)

    def save(self, *args, **kwargs):
        if not self.slug:
            base_slug = slugify(self.name)
            self.slug = base_slug
            counter = 1

            while (
                self.__class__.objects.filter(slug=self.slug)
                .exclude(pk=self.pk)
                .exists()
            ):
                self.slug = f"{base_slug}-{counter}"
                counter += 1
        super().save(*args, **kwargs)

    def __str__(self):
        return self.name

    class Meta:
        verbose_name = _("Series")
        indexes = [
            models.Index(fields=["id_car_model"], name="car_serie_model_idx"),
            models.Index(fields=["year_begin", "year_end"], name="car_serie_years_idx"),
            models.Index(fields=["name"], name="car_serie_name_idx"),
            models.Index(fields=["generation_name"], name="car_serie_generation_idx"),
        ]


class CarTrim(models.Model, LocalizedNameMixin):
    id_car_trim = models.AutoField(primary_key=True)
    id_car_serie = models.ForeignKey(
        CarSerie, models.DO_NOTHING, db_column="id_car_serie"
    )
    name = models.CharField(max_length=255, blank=True, null=True)
    arabic_name = models.CharField(max_length=255, blank=True, null=True)
    start_production_year = models.IntegerField(blank=True, null=True)
    end_production_year = models.IntegerField(blank=True, null=True)
    slug = models.SlugField(max_length=255, unique=True, blank=True, null=True)

    def save(self, *args, **kwargs):
        if not self.slug:
            base_slug = slugify(self.name)
            self.slug = base_slug
            counter = 1

            while (
                self.__class__.objects.filter(slug=self.slug)
                .exclude(pk=self.pk)
                .exists()
            ):
                self.slug = f"{base_slug}-{counter}"
                counter += 1
        super().save(*args, **kwargs)

    def __str__(self):
        return self.name

    class Meta:
        verbose_name = _("Trim")
        indexes = [
            models.Index(fields=["id_car_serie"], name="car_trim_serie_idx"),
            models.Index(
                fields=["start_production_year", "end_production_year"],
                name="car_trim_prod_years_idx",
            ),
            models.Index(fields=["name"], name="car_trim_name_idx"),
        ]


class CarEquipment(models.Model, LocalizedNameMixin):
    id_car_equipment = models.AutoField(primary_key=True)
    id_car_trim = models.ForeignKey(CarTrim, models.DO_NOTHING, db_column="id_car_trim")
    name = models.CharField(max_length=255, blank=True, null=True)
    arabic_name = models.CharField(max_length=255, blank=True, null=True)
    year_begin = models.IntegerField(blank=True, null=True)
    slug = models.SlugField(max_length=255, unique=True, blank=True, null=True)

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

    def __str__(self):
        return self.name

    class Meta:
        verbose_name = _("Equipment")
        indexes = [
            models.Index(fields=["id_car_trim"], name="car_equipment_trim_idx"),
            models.Index(fields=["year_begin"], name="car_equipment_year_idx"),
            models.Index(fields=["name"], name="car_equipment_name_idx"),
        ]


class CarSpecification(models.Model, LocalizedNameMixin):
    id_car_specification = models.AutoField(primary_key=True)
    name = models.CharField(max_length=255)
    arabic_name = models.CharField(max_length=255)
    id_parent = models.ForeignKey(
        "self", models.DO_NOTHING, db_column="id_parent", blank=True, null=True
    )
    slug = models.SlugField(max_length=255, unique=True, blank=True, null=True)

    def save(self, *args, **kwargs):
        if not self.slug:
            base_slug = slugify(self.name)
            self.slug = base_slug
            counter = 1

            while (
                self.__class__.objects.filter(slug=self.slug)
                .exclude(pk=self.pk)
                .exists()
            ):
                self.slug = f"{base_slug}-{counter}"
                counter += 1
        super().save(*args, **kwargs)

    def __str__(self):
        return self.name

    class Meta:
        verbose_name = _("Specification")
        indexes = [
            models.Index(fields=["id_parent"], name="car_spec_parent_idx"),
            models.Index(fields=["name"], name="car_spec_name_idx"),
        ]


class CarSpecificationValue(models.Model):
    id_car_specification_value = models.AutoField(primary_key=True)
    id_car_trim = models.ForeignKey(CarTrim, models.DO_NOTHING, db_column="id_car_trim")
    id_car_specification = models.ForeignKey(
        CarSpecification, models.DO_NOTHING, db_column="id_car_specification"
    )
    value = models.CharField(max_length=500)
    unit = models.CharField(max_length=255, blank=True, null=True)

    def __str__(self):
        return f"{self.id_car_specification.name}: {self.value} {self.unit}"

    class Meta:
        verbose_name = _("Specification Value")
        indexes = [
            models.Index(fields=["id_car_trim"], name="car_spec_val_trim_idx"),
            models.Index(fields=["id_car_specification"], name="car_spec_val_spec_idx"),
            models.Index(
                fields=["id_car_trim", "id_car_specification"],
                name="car_spec_val_trim_spec_idx",
            ),
        ]


class CarOption(models.Model, LocalizedNameMixin):
    id_car_option = models.AutoField(primary_key=True)
    name = models.CharField(max_length=255, blank=True, null=True)
    arabic_name = models.CharField(max_length=255, blank=True, null=True)
    id_parent = models.ForeignKey(
        "self", models.DO_NOTHING, db_column="id_parent", blank=True, null=True
    )
    slug = models.SlugField(max_length=255, unique=True, blank=True, null=True)

    def save(self, *args, **kwargs):
        if not self.slug:
            base_slug = slugify(self.name)
            self.slug = base_slug
            counter = 1

            while (
                self.__class__.objects.filter(slug=self.slug)
                .exclude(pk=self.pk)
                .exists()
            ):
                self.slug = f"{base_slug}-{counter}"
                counter += 1
        super().save(*args, **kwargs)

    def __str__(self):
        return self.name

    class Meta:
        verbose_name = _("Option")
        indexes = [
            models.Index(fields=["id_parent"], name="car_option_parent_idx"),
            models.Index(fields=["name"], name="car_option_name_idx"),
        ]


class CarOptionValue(models.Model):
    id_car_option_value = models.AutoField(primary_key=True)
    id_car_option = models.ForeignKey(
        CarOption, models.DO_NOTHING, db_column="id_car_option"
    )
    id_car_equipment = models.ForeignKey(
        CarEquipment, models.DO_NOTHING, db_column="id_car_equipment"
    )
    value = models.CharField(max_length=500)
    unit = models.CharField(max_length=255, blank=True, null=True)
    is_base = models.IntegerField()

    def __str__(self):
        return f"{self.id_car_option.name}: {self.value} {self.unit}"

    class Meta:
        verbose_name = _("Option Value")
        indexes = [
            models.Index(fields=["id_car_option"], name="car_opt_val_option_idx"),
            models.Index(fields=["id_car_equipment"], name="car_opt_val_equipment_idx"),
            models.Index(fields=["is_base"], name="car_opt_val_is_base_idx"),
            models.Index(
                fields=["id_car_option", "id_car_equipment"],
                name="cov_option_equipment_idx",
            ),
        ]


class CarTransferStatusChoices(models.TextChoices):
    draft = "draft", _("Draft")
    approved = "approved", _("Approved")
    pending = "pending", _("Pending")
    accepted = "accepted", _("Accepted")
    success = "success", _("Success")
    reject = "reject", _("Reject")
    cancelled = "cancelled", _("Cancelled")


class CarStatusChoices(models.TextChoices):
    AVAILABLE = "available", _("Available")
    SOLD = "sold", _("Sold")
    HOLD = "hold", _("Hold")
    DAMAGED = "damaged", _("Damaged")
    RESERVED = "reserved", _("Reserved")
    TRANSFER = "transfer", _("Transfer")


class CarStockTypeChoices(models.TextChoices):
    NEW = "new", _("New")
    USED = "used", _("Used")


class AdditionalServices(models.Model, LocalizedNameMixin):
    name = models.CharField(max_length=255, verbose_name=_("Name"))
    arabic_name = models.CharField(max_length=255, verbose_name=_("Arabic Name"))
    description = models.TextField(verbose_name=_("Description"))
    price = models.DecimalField(
        max_digits=14, decimal_places=2, verbose_name=_("Price")
    )
    taxable = models.BooleanField(default=False, verbose_name=_("taxable"))
    uom = models.CharField(
        max_length=10,
        choices=UnitOfMeasure.choices,
        verbose_name=_("Unit of Measurement"),
    )
    dealer = models.ForeignKey(
        "Dealer", on_delete=models.CASCADE, verbose_name=_("Dealer")
    )
    item = models.OneToOneField(
        ItemModel,
        on_delete=models.CASCADE,
        verbose_name=_("Item"),
        null=True,
        blank=True,
    )

    def to_dict(self):
        return {
            "name": self.name,
            "price": str(self.price),
            "price_": str(self.price_),
            "taxable": self.taxable,
            "uom": self.uom,
        }

    @property
    def price_(self):
        vat = VatRate.objects.filter(dealer=self.dealer, is_active=True).first()
        return (
            Decimal(self.price + (self.price * vat.rate))
            if self.taxable
            else self.price
        )

    class Meta:
        verbose_name = _("Additional Services")
        verbose_name_plural = _("Additional Services")

    def __str__(self):
        return self.name + " - " + str(self.price_)


class Car(Base):

    item_model = models.OneToOneField(
        ItemModel,
        models.DO_NOTHING,
        verbose_name=_("Item Model"),
        null=True,
        blank=True,
    )
    vin = models.CharField(max_length=17, unique=True, verbose_name=_("VIN"))
    dealer = models.ForeignKey(
        "Dealer", models.DO_NOTHING, related_name="cars", verbose_name=_("Dealer")
    )

    vendor = models.ForeignKey(
        "Vendor",
        models.DO_NOTHING,
        related_name="cars",
        verbose_name=_("Vendor"),
    )
    id_car_make = models.ForeignKey(
        CarMake,
        models.DO_NOTHING,
        db_column="id_car_make",
        null=True,
        blank=True,
        verbose_name=_("Make"),
    )
    id_car_model = models.ForeignKey(
        CarModel,
        models.DO_NOTHING,
        db_column="id_car_model",
        null=True,
        blank=True,
        verbose_name=_("Model"),
    )
    year = models.IntegerField(verbose_name=_("Year"))
    id_car_serie = models.ForeignKey(
        CarSerie,
        models.DO_NOTHING,
        db_column="id_car_serie",
        null=True,
        blank=True,
        verbose_name=_("Series"),
    )
    id_car_trim = models.ForeignKey(
        CarTrim,
        models.DO_NOTHING,
        db_column="id_car_trim",
        null=True,
        blank=True,
        verbose_name=_("Trim"),
    )
    status = models.CharField(
        max_length=10,
        choices=CarStatusChoices.choices,
        default=CarStatusChoices.AVAILABLE,
        verbose_name=_("Status"),
    )

    stock_type = models.CharField(
        max_length=10,
        choices=CarStockTypeChoices.choices,
        default=CarStockTypeChoices.NEW,
        verbose_name=_("Stock Type"),
    )
    remarks = models.TextField(blank=True, null=True, verbose_name=_("Remarks"))
    mileage = models.IntegerField(blank=True, null=True, verbose_name=_("Mileage"))
    receiving_date = models.DateTimeField(verbose_name=_("Receiving Date"))
    sold_date=models.DateTimeField(verbose_name=_("Sold Date"),null=True,blank=True)
    hash = models.CharField(
        max_length=64, blank=True, null=True, verbose_name=_("Hash")
    )
    # history = HistoricalRecords()

    def get_absolute_url(self):
        return reverse(
            "car_detail", kwargs={"dealer_slug": self.dealer.slug, "slug": self.slug}
        )

    def save(self, *args, **kwargs):
        self.slug = slugify(self.vin)
        self.hash = self.get_hash
        super(Car, self).save(*args, **kwargs)

    class Meta:
        verbose_name = _("Car")
        verbose_name_plural = _("Cars")
        indexes = [
            models.Index(fields=["vin"], name="car_vin_idx"),
            models.Index(fields=["year"], name="car_year_idx"),
            models.Index(fields=["status"], name="car_status_idx"),
            models.Index(fields=["dealer"], name="car_dealer_idx"),
            models.Index(fields=["vendor"], name="car_vendor_idx"),
            models.Index(fields=["id_car_make"], name="car_make_idx"),
            models.Index(fields=["id_car_model"], name="car_model_idx"),
            models.Index(fields=["id_car_serie"], name="car_serie_idx"),
            models.Index(fields=["id_car_trim"], name="car_trim_idx"),
            models.Index(
                fields=["id_car_make", "id_car_model"], name="car_make_model_idx"
            ),
            models.Index(fields=["id_car_make", "year"], name="car_make_year_idx"),
            models.Index(fields=["dealer", "status"], name="car_dealer_status_idx"),
            models.Index(fields=["vendor", "status"], name="car_vendor_status_idx"),
            models.Index(fields=["year", "status"], name="car_year_status_idx"),
            models.Index(
                fields=["status"],
                name="car_active_status_idx",
                condition=Q(status=CarStatusChoices.AVAILABLE),
            ),
        ]

    def __str__(self):
        make = self.id_car_make.name if self.id_car_make else "Unknown Make"
        model = self.id_car_model.name if self.id_car_model else "Unknown Model"
        trim = self.id_car_trim.name if self.id_car_trim else "Unknown Trim"
        return f"{self.year} - {make} - {model} - {trim}"

    @property
    def product(self):
        return self.dealer.entity.get_items_all().filter(name=self.vin).first()

    def get_reservation(self):
        return self.reservations.filter(reserved_until__gt=now()).first()

    def is_reserved(self):
        active_reservations = self.reservations.filter(reserved_until__gt=now())
        return active_reservations.exists()

    @property
    def logo(self):
        return getattr(self.id_car_make, "logo", "")
    @property
    def additional_services(self):
        return self.finances.additional_services.all()
    @property
    def total_additional_services(self):
        return sum([service.price_ for service in self.additional_services])
    @property
    def ready(self):
        try:
            return all(
                [
                    self.colors,
                    self.finances,
                    self.finances.marked_price > 0,
                ]
            )
        except Exception:
            return False
    @property
    def invoice(self):
        return self.item_model.invoicemodel_set.first if self.item_model.invoicemodel_set.first() else None
    def get_transfer(self):
        return self.transfer_logs.filter(active=True).first()

    @property
    def get_car_group(self):
        return f"{self.id_car_make.get_local_name} {self.id_car_model.get_local_name}"

    @property
    def get_hash(self):
        hash_object = hashlib.sha256()
        color = ""
        try:
            color = self.colors.exterior.name if self.colors else ""
        except Exception:
            pass
        make = self.id_car_make.name if self.id_car_make else ""
        model = self.id_car_model.name if self.id_car_model else ""
        year = self.year if self.year else 0
        serie = self.id_car_serie.name if self.id_car_serie else ""
        trim = self.id_car_trim.name if self.id_car_trim else ""
        hash_object.update(f"{make}{model}{year}{serie}{trim}{color}".encode("utf-8"))
        return hash_object.hexdigest()

    def mark_as_sold(self):
        self.cancel_reservation()
        self.status = CarStatusChoices.SOLD
        self.save()

    def cancel_reservation(self):
        if self.reservations.exists():
            self.reservations.all().delete()

    def cancel_transfer(self):
        if self.transfer_logs.exists():
            self.transfer_logs.all().delete()

    def to_dict(self):
        return {
            "vin": self.vin,
            "make": self.id_car_make.name if self.id_car_make else "Unknown Make",
            "model": self.id_car_model.name if self.id_car_model else "Unknown Model",
            "trim": self.id_car_trim.name if self.id_car_trim else "Unknown Trim",
            "year": self.year,
            "display_name": self.get_car_group,
            "status": self.status,
            "stock_type": self.stock_type,
            "remarks": self.remarks,
            "mileage": self.mileage,
            "receiving_date": self.receiving_date.strftime("%Y-%m-%d %H:%M:%S"),
            "hash": self.get_hash,
            "id": str(self.id),
        }

    def get_specifications(self):
        specs = CarSpecificationValue.objects.filter(id_car_trim=self.id_car_trim)
        return specs

    def get_inventory_account(self):
        return (
            self.dealer.entity.get_all_accounts()
            .filter(name=f"Inventory:{self.id_car_make.name}")
            .first()
        )

    def get_revenue_account(self):
        return (
            self.dealer.entity.get_all_accounts()
            .filter(name=f"Revenue:{self.id_car_make.name}")
            .first()
        )

    def get_cogs_account(self):
        return (
            self.dealer.entity.get_all_accounts()
            .filter(name=f"Cogs:{self.id_car_make.name}")
            .first()
        )

    def add_colors(self, exterior, interior):
        self.colors = CarColors.objects.create(
            car=self, exterior=exterior, interior=interior
        )
        self.save()

    @property
    def logo(self):
        return self.id_car_make.logo.url if self.id_car_make.logo else None


class CarTransfer(models.Model):
    car = models.ForeignKey(
        "Car",
        on_delete=models.CASCADE,
        related_name="transfer_logs",
        verbose_name=_("Car"),
    )
    from_dealer = models.ForeignKey(
        "Dealer",
        on_delete=models.CASCADE,
        related_name="transfers_out",
        verbose_name=_("From Dealer"),
    )
    to_dealer = models.ForeignKey(
        "Dealer",
        on_delete=models.CASCADE,
        related_name="transfers_in",
        verbose_name=_("To Dealer"),
    )
    transfer_date = models.DateTimeField(
        auto_now_add=True, verbose_name=_("Transfer Date")
    )
    quantity = models.IntegerField(verbose_name=_("Quantity"), default=1)
    remarks = models.TextField(blank=True, null=True, verbose_name=_("Remarks"))
    status = models.CharField(
        CarTransferStatusChoices.choices,
        max_length=10,
        default=CarTransferStatusChoices.draft,
    )
    is_approved = models.BooleanField(default=False)
    active = models.BooleanField(default=True)
    created_at = models.DateTimeField(auto_now_add=True, verbose_name=_("Created At"))
    updated_at = models.DateTimeField(auto_now=True, verbose_name=_("Updated At"))

    @property
    def total_price(self):
        return self.quantity * self.car.finances.total_vat

    class Meta:
        verbose_name = _("Car Transfer Log")
        verbose_name_plural = _("Car Transfer Logs")

    def __str__(self):
        return f"{self.car} Transfer car from {self.from_dealer} to {self.to_dealer}"


class CarReservation(models.Model):
    car = models.ForeignKey(
        "Car",
        on_delete=models.CASCADE,
        related_name="reservations",
        verbose_name=_("Car"),
    )
    reserved_by = models.ForeignKey(
        User,
        on_delete=models.CASCADE,
        related_name="reservations",
        verbose_name=_("Reserved By"),
    )
    # reserved_for = models.ForeignKey(
    #     CustomerModel,
    #     on_delete=models.CASCADE,
    #     related_name="reservations",
    #     verbose_name=_("Reserved For"),
    # )
    reserved_at = models.DateTimeField(auto_now_add=True, verbose_name=_("Reserved At"))
    reserved_until = models.DateTimeField(verbose_name=_("Reserved Until"))

    @property
    def is_active(self):
        return self.reserved_until > now()

    class Meta:
        unique_together = ("car", "reserved_until")
        ordering = ["-reserved_at"]
        verbose_name = _("Car Reservation")
        verbose_name_plural = _("Car Reservations")


# Car Finance Model
class CarFinance(models.Model):
    additional_services = models.ManyToManyField(
        AdditionalServices, related_name="additional_finances", blank=True
    )
    car = models.OneToOneField(Car, on_delete=models.CASCADE, related_name="finances")
    cost_price = models.DecimalField(
        max_digits=14, decimal_places=2, verbose_name=_("Cost Price")
    )
    selling_price = models.DecimalField(
        max_digits=14,
        decimal_places=2,
        verbose_name=_("Selling Price"),
        default=Decimal("0.00"),
    )
    marked_price = models.DecimalField(
        max_digits=14,
        decimal_places=2,
        verbose_name=_("Marked Price"),
        default=Decimal("0.00"),
    )
    discount_amount = models.DecimalField(
        max_digits=14,
        decimal_places=2,
        verbose_name=_("Discount Amount"),
        default=Decimal("0.00"),
    )
    # is_sold = models.BooleanField(default=False)


    @property
    def total(self):
        return self.marked_price

    @property
    def total_additionals_no_vat(self):
        return sum(x.price for x in self.additional_services.all())

    @property
    def total_additionals(self):
        return sum(x.price_ for x in self.additional_services.all())

    @property
    def total_discount(self):
        if self.discount_amount > 0:
            return self.marked_price - self.discount_amount
        return self.marked_price

    @property
    def total_vat(self):
        return round(self.total_discount + self.vat_amount + self.total_additionals, 2)

    @property
    def vat_amount(self):
        vat = VatRate.objects.filter(dealer=self.car.dealer, is_active=True).first()
        if vat:
            return (self.total_discount * Decimal(vat.rate)).quantize(Decimal("0.01"))
        return Decimal("0.00")

    @property
    def revenue(self):
        return self.marked_price - self.cost_price

    def to_dict(self):
        return {
            "cost_price": str(self.cost_price),
            "selling_price": str(self.selling_price),
            "marked_price": str(self.marked_price),
            "discount_amount": str(self.discount_amount),
            "total": str(self.total),
            "total_discount": str(self.total_discount),
            "total_vat": str(self.total_vat),
            "vat_amount": str(self.vat_amount),
        }

    def __str__(self):
        return f"Car: {self.car}, Marked Price: {self.marked_price}"

    # def save(self, *args, **kwargs):
    #     self.full_clean()
    #     try:
    #         price_after_discount = self.selling_price - self.discount_amount
    #         self.profit_margin = price_after_discount - self.cost_price
    #         self.vat_amount = settings.VAT_RATE
    #     except InvalidOperation as e:
    #         raise ValidationError(_("Invalid decimal operation: %s") % str(e))
    #     super().save(*args, **kwargs)

    class Meta:
        verbose_name = _("Car Financial Details")
        verbose_name_plural = _("Car Financial Details")
        indexes = [
            models.Index(fields=["car"], name="car_finance_car_idx"),
            models.Index(fields=["cost_price"], name="car_finance_cost_price_idx"),
            models.Index(
                fields=["selling_price"], name="car_finance_selling_price_idx"
            ),
            models.Index(fields=["marked_price"], name="car_finance_marked_price_idx"),
            models.Index(fields=["discount_amount"], name="car_finance_discount_idx"),
        ]


class ExteriorColors(models.Model, LocalizedNameMixin):
    name = models.CharField(max_length=255, verbose_name=_("Name"))
    arabic_name = models.CharField(max_length=255, verbose_name=_("Arabic Name"))
    rgb = models.CharField(max_length=24, blank=True, null=True, verbose_name=_("RGB"))

    class Meta:
        verbose_name = _("Exterior Colors")
        verbose_name_plural = _("Exterior Colors")
        indexes = [
            models.Index(fields=["name"], name="exterior_color_name_idx"),
            models.Index(fields=["arabic_name"], name="exterior_color_arabic_name_idx"),
        ]

    def __str__(self):
        return f"{self.name} ({self.rgb})"


class InteriorColors(models.Model, LocalizedNameMixin):
    name = models.CharField(max_length=255, verbose_name=_("Name"))
    arabic_name = models.CharField(max_length=255, verbose_name=_("Arabic Name"))
    rgb = models.CharField(max_length=24, blank=True, null=True, verbose_name=_("RGB"))

    class Meta:
        verbose_name = _("Interior Colors")
        verbose_name_plural = _("Interior Colors")
        indexes = [
            models.Index(fields=["name"], name="interior_color_name_idx"),
            models.Index(fields=["arabic_name"], name="interior_color_arabic_name_idx"),
        ]

    def __str__(self):
        return f"{self.name} ({self.rgb})"


class CarColors(models.Model):
    car = models.OneToOneField("Car", on_delete=models.CASCADE, related_name="colors")
    exterior = models.ForeignKey(
        "ExteriorColors", on_delete=models.CASCADE, related_name="colors"
    )
    interior = models.ForeignKey(
        "InteriorColors", on_delete=models.CASCADE, related_name="colors"
    )

    class Meta:
        verbose_name = _("Color")
        verbose_name_plural = _("Colors")
        unique_together = ("car", "exterior", "interior")
        indexes = [
            models.Index(fields=["exterior"], name="car_colors_exterior_idx"),
            models.Index(fields=["interior"], name="car_colors_interior_idx"),
            models.Index(
                fields=["exterior", "interior"], name="car_colors_ext_int_combo_idx"
            ),
        ]

    def __str__(self):
        return f"{self.car} ({self.exterior.name}) ({self.interior.name})"


class CustomCard(models.Model):
    car = models.OneToOneField(
        Car,
        on_delete=models.CASCADE,
        related_name="custom_cards",
        verbose_name=_("Car"),
    )
    custom_number = models.CharField(max_length=255, verbose_name=_("Custom Number"))
    custom_date = models.DateField(verbose_name=_("Custom Date"))

    class Meta:
        verbose_name = _("Custom Card")
        verbose_name_plural = _("Custom Cards")

    def __str__(self):
        return f"{self.car} - {self.custom_number}"


class CarLocation(models.Model):
    car = models.OneToOneField(
        Car, on_delete=models.CASCADE, related_name="location", verbose_name=_("Car")
    )
    owner = models.ForeignKey(
        "Dealer",
        on_delete=models.CASCADE,
        related_name="owned_cars",
        verbose_name=_("Owner"),
        help_text=_("Dealer who owns the car."),
    )
    showroom = models.ForeignKey(
        "Dealer",
        on_delete=models.CASCADE,
        related_name="showroom_cars",
        verbose_name=_("Showroom"),
        help_text=_("Dealer where the car is displayed (can be the owner)."),
    )
    description = models.TextField(
        blank=True,
        null=True,
        verbose_name=_("Description"),
        help_text=_("Optional description about the showroom placement."),
    )
    created_at = models.DateTimeField(auto_now_add=True, verbose_name=_("Created At"))
    updated_at = models.DateTimeField(auto_now=True, verbose_name=_("Last Updated"))

    class Meta:
        verbose_name = _("Car Location")
        verbose_name_plural = _("Car Locations")

    def __str__(self):
        return f"Car: {self.car}, Showroom: {self.showroom}, Owner: {self.owner}"

    def is_owner_showroom(self):
        """
        Returns True if the showroom is the same as the owner.
        """
        return self.owner == self.showroom


class CarRegistration(models.Model):
    car = models.OneToOneField(
        Car,
        on_delete=models.CASCADE,
        related_name="registrations",
        verbose_name=_("Car"),
    )
    plate_number = models.IntegerField(verbose_name=_("Plate Number"))
    text1 = models.CharField(max_length=1, verbose_name=_("Text 1"))
    text2 = models.CharField(
        max_length=1, verbose_name=_("Text 2"), null=True, blank=True
    )
    text3 = models.CharField(
        max_length=1, verbose_name=_("Text 3"), null=True, blank=True
    )
    registration_date = models.DateTimeField(verbose_name=_("Registration Date"))

    class Meta:
        verbose_name = _("Registration")
        verbose_name_plural = _("Registrations")

    def __str__(self):
        return f"{self.plate_number}"


# TimestampedModel Abstract Class
class TimestampedModel(models.Model):
    created = models.DateTimeField(auto_now_add=True, verbose_name=_("Created"))
    updated = models.DateTimeField(auto_now=True, verbose_name=_("Updated"))

    class Meta:
        abstract = True


class Dealer(models.Model, LocalizedNameMixin):
    user = models.OneToOneField(User, on_delete=models.CASCADE, related_name="dealer")
    crn = models.CharField(
        max_length=10,
        verbose_name=_("Commercial Registration Number"),
        null=True,
        blank=True,
    )
    vrn = models.CharField(
        max_length=15, verbose_name=_("VAT Registration Number"), null=True, blank=True
    )
    arabic_name = models.CharField(max_length=255, verbose_name=_("Arabic Name"))
    name = models.CharField(max_length=255, verbose_name=_("English Name"))
    phone_number = PhoneNumberField(region="SA", verbose_name=_("Phone Number"))
    address = models.CharField(
        max_length=200, blank=True, null=True, verbose_name=_("Address")
    )
    logo = models.ImageField(
        upload_to="logos/users",
        blank=True,
        null=True,
        verbose_name=_("Logo"),
        default="default-image/user.jpg",
    )
    thumbnail = ImageSpecField(
        source="logo",
        processors=[ResizeToFill(40, 40)],
        format="WEBP",
        options={"quality": 80},
    )
    entity = models.ForeignKey(
        EntityModel, on_delete=models.SET_NULL, null=True, blank=True
    )
    joined_at = models.DateTimeField(auto_now_add=True, verbose_name=_("Joined At"))
    updated_at = models.DateTimeField(auto_now=True, verbose_name=_("Updated At"))
    slug = models.SlugField(max_length=255, unique=True, blank=True, null=True)

    objects = DealerUserManager()

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

    @property
    def active_plan(self):
        try:
            plan = UserPlan.objects.get(user=self.user, active=True).plan
            return plan

        except Exception as e:
            print(e)
            return None

    @property
    def user_quota(self):
        try:
            quota_dict = get_user_quota(self.user)
            allowed_users = quota_dict.get("Users", None)
            return allowed_users
        except Exception as e:
            print(e)
            return None

    @property
    def car_quota(self):
        try:
            quota_dict = get_user_quota(self.user)
            allowed_cars = quota_dict.get("Cars", None)
            return allowed_cars
        except Exception as e:
            print(e)
            return None

    def get_vendors(self):
        return VendorModel.objects.filter(entity_model=self.entity)

    @property
    def is_staff_exceed_quota_limit(self):
        quota = self.user_quota
        staff_count = self.staff.count()
        if staff_count >= quota:
            return True
        return False

    @property
    def vat_rate(self):
        return VatRate.objects.get(dealer=self, is_active=True).rate

    class Meta:
        verbose_name = _("Dealer")
        verbose_name_plural = _("Dealers")
        indexes = [models.Index(fields=["name"])]
        # permissions = [
        #     ('change_dealer_type', 'Can change dealer type'),
        # ]

    def __str__(self):
        return self.name

    @property
    def invoices(self):
        return Invoice.objects.filter(order__user=self.user)

class StaffTypes(models.TextChoices):
    # MANAGER = "manager", _("Manager")
    INVENTORY = "inventory", _("Inventory")
    ACCOUNTANT = "accountant", _("Accountant")
    SALES = "sales", _("Sales")
    # COORDINATOR = "coordinator", _("Coordinator")
    # RECEPTIONIST = "receptionist", _("Receptionist")
    # AGENT = "agent", _("Agent")


class Staff(models.Model, LocalizedNameMixin):
    # staff_member = models.OneToOneField(
    #     StaffMember, on_delete=models.CASCADE, related_name="staff"
    # )
    user = models.OneToOneField(
        User, on_delete=models.CASCADE, related_name="staff"
    )
    dealer = models.ForeignKey(Dealer, on_delete=models.CASCADE, related_name="staff")
    first_name = models.CharField(max_length=255, verbose_name=_("First Name"))
    last_name = models.CharField(max_length=255, verbose_name=_("Last Name"))
    name = models.CharField(max_length=255, verbose_name=_("Name"))
    arabic_name = models.CharField(max_length=255, verbose_name=_("Arabic Name"))
    phone_number = PhoneNumberField(region="SA", verbose_name=_("Phone Number"))
    staff_type = models.CharField(
        choices=StaffTypes.choices, max_length=255, verbose_name=_("Staff Type")
    )
    address = models.CharField(
        max_length=200, blank=True, null=True, verbose_name=_("Address")
    )
    logo = models.ImageField(
        upload_to="logos/staff", blank=True, null=True, verbose_name=_("Image"),default="default-image/user.jpg"
    )
    thumbnail = ImageSpecField(
        source="logo",
        processors=[ResizeToFill(40, 40)],
        format="WEBP",
        options={"quality": 80},
    )
    active = models.BooleanField(default=True, verbose_name=_("Active"))
    created = models.DateTimeField(auto_now_add=True, verbose_name=_("Created"))
    updated = models.DateTimeField(auto_now=True, verbose_name=_("Updated"))
    slug = models.SlugField(
        max_length=255, unique=True, editable=False, null=True, blank=True
    )

    def save(self, *args, **kwargs):
        if not self.slug:
            base_slug = slugify(f"{self.name}")
            self.slug = base_slug
            counter = 1

            while (
                self.__class__.objects.filter(slug=self.slug)
                .exclude(pk=self.pk)
                .exists()
            ):
                self.slug = f"{base_slug}-{counter}"
                counter += 1
        super().save(*args, **kwargs)

    objects = StaffUserManager()

    def deactivate_account(self):
        self.active = False
        self.user.is_active = False
        self.user.save()
        self.save()

    def activate_account(self):
        self.active = True
        self.user.is_active = True
        self.user.save()
        self.save()

    def permenant_delete(self):
        self.user.delete()
        # self.staff_member.delete()
        self.delete()

    @property
    def email(self):
        return self.user.email

    # @property
    # def user(self):
    #     return self.staff_member.user

    @property
    def groups(self):
        return CustomGroup.objects.select_related("group").filter(
            pk__in=[x.customgroup.pk for x in self.user.groups.all()]
        )

    def clear_groups(self):
        self.remove_superuser_permission()
        return self.user.groups.clear()

    def add_group(self, group, clean=False):
        if clean:
            self.clear_groups()
        try:
            self.user.groups.add(group)
            if "accountant" in group.name.lower():
                self.add_superuser_permission()
        except Exception as e:
            print(e)

    def add_superuser_permission(self):
        entity = self.dealer.entity
        if entity.managers.count() == 0:
            entity.managers.add(self.user)

    def remove_superuser_permission(self):
        entity = self.dealer.entity
        if self.user in entity.managers.all():
            entity.managers.remove(self.user)

    class Meta:
        verbose_name = _("Staff")
        verbose_name_plural = _("Staff")
        indexes = [
            models.Index(fields=["name"]),
            models.Index(fields=["staff_type"]),
        ]
        permissions = []
        constraints = [
            models.UniqueConstraint(
                fields=['dealer', 'user'],
                name='unique_staff_email_per_dealer'
            )
        ]

    def __str__(self):
        return f"{self.name}"


class Sources(models.TextChoices):
    REFERRALS = "referrals", _("Referrals")
    WHATSAPP = "whatsapp", _("WhatsApp")
    SHOWROOM = "showroom", _("Showroom")
    TIKTOK = "tiktok", _("TikTok")
    INSTAGRAM = "instagram", _("Instagram")
    X = "x", _("X")
    FACEBOOK = "facebook", _("Facebook")
    MOTORY = "motory", _("Motory")
    INFLUENCERS = "influencers", _("Influencers")
    YOUTUBE = "youtube", _("Youtube")
    CAMPAIGN = "campaign", _("Campaign")


class Channel(models.TextChoices):
    WALK_IN = "walk_in", _("Walk In")
    TOLL_FREE = "toll_free", _("Toll Free")
    WEBSITE = "website", _("Website")
    EMAIL = "email", _("Email")
    FORM = "form", _("Form")


class Status(models.TextChoices):
    NEW = "new", _("New")
    CONTACTED = "contacted", _("Contacted")
    QUALIFIED = "qualified", _("Qualified")
    UNQUALIFIED = "unqualified", _("Unqualified")
    CONVERTED = "converted", _("Converted")


class Title(models.TextChoices):
    MR = "mr", _("Mr")
    MRS = "mrs", _("Mrs")
    MS = "ms", _("Ms")
    MISS = "miss", _("Miss")
    DR = "dr", _("Dr")
    PROF = "prof", _("Prof")
    PRINCE = "prince", _("Prince")
    PRINCESS = "princess", _("Princess")
    COMPANY = "company", _("Company")
    NA = "na", _("N/A")


class ActionChoices(models.TextChoices):
    CALL = "call", _("Call")
    SMS = "sms", _("SMS")
    EMAIL = "email", _("Email")
    MEETING = "meeting", _("Meeting")
    WHATSAPP = "whatsapp", _("WhatsApp")
    VISIT = "visit", _("Visit")
    LEAD_NEGOTIATION = "negotiation", _("Negotiation")
    LEAD_FOLLOW_UP = "follow_up", _("Follow Up")
    LEAD_WON = "won", _("Won")
    LEAD_LOST = "lost", _("Lost")
    LEAD_CLOSED = "closed", _("Closed")
    LEAD_CONVERTED = "converted", _("Converted")
    LEAD_TRANSFER = "transfer", _("Transfer")
    ADD_CAR = "add_car", _("Add Car")
    SALE_CAR = "sale_car", _("Sale Car")
    RESERVE_CAR = "reserve_car", _("Reserve Car")
    TRANSFER_CAR = "transfer_car", _("Transfer Car")
    REMOVE_CAR = "remove_car", _("Remove Car")
    CREATE_QUOTATION = "create_quotation", _("Create Quotation")
    CANCEL_QUOTATION = "cancel_quotation", _("Cancel Quotation")
    CREATE_ORDER = "create_order", _("Create Order")
    CANCEL_ORDER = "cancel_order", _("Cancel Order")
    CREATE_INVOICE = "create_invoice", _("Create Invoice")
    CANCEL_INVOICE = "cancel_invoice", _("Cancel Invoice")


class Stage(models.TextChoices):
    QUALIFICATION = "qualification", _("Qualification")
    TEST_DRIVE = "test_drive", _("Test Drive")
    QUOTATION = "quotation", _("Quotation")
    NEGOTIATION = "negotiation", _("Negotiation")
    FINANCING = "financing", _("Financing")
    CLOSED_WON = "closed_won", _("Closed Won")
    CLOSED_LOST = "closed_lost", _("Closed Lost")
    ON_HOLD = "on_hold", _("On Hold")


class Priority(models.TextChoices):
    LOW = "low", _("Low")
    MEDIUM = "medium", _("Medium")
    HIGH = "high", _("High")


class Customer(models.Model):
    dealer = models.ForeignKey(
        Dealer, on_delete=models.CASCADE, related_name="customers"
    )
    customer_model = models.ForeignKey(
        CustomerModel, on_delete=models.SET_NULL, null=True
    )
    user = models.OneToOneField(
        User, on_delete=models.CASCADE, related_name="customer_profile"
    )
    title = models.CharField(
        choices=Title.choices, default=Title.NA, max_length=10, verbose_name=_("Title")
    )
    first_name = models.CharField(max_length=50, verbose_name=_("First Name"))
    # middle_name = models.CharField(
    #     max_length=50, blank=True, null=True, verbose_name=_("Middle Name")
    # )
    last_name = models.CharField(max_length=50, verbose_name=_("Last Name"))
    gender = models.CharField(
        choices=[("m", _("Male")), ("f", _("Female"))],
        max_length=1,
        verbose_name=_("Gender"),
    )
    dob = models.DateField(verbose_name=_("Date of Birth"), null=True, blank=True)
    email = models.EmailField(verbose_name=_("Email"))
    national_id = models.CharField(
        max_length=10, unique=True, verbose_name=_("National ID"), null=True, blank=True
    )
    phone_number = PhoneNumberField(
        region="SA", unique=True, verbose_name=_("Phone Number")
    )
    address = models.CharField(
        max_length=200, blank=True, null=True, verbose_name=_("Address")
    )
    active = models.BooleanField(default=True, verbose_name=_("Active"))
    image = models.ImageField(
        upload_to="customers/", blank=True, null=True, verbose_name=_("Image"),default="default-image/user-jpg"
    )
    thumbnail = ImageSpecField(
        source="image",
        processors=[ResizeToFill(40, 40)],
        format="WEBP",
        options={"quality": 80},
    )
    created = models.DateTimeField(auto_now_add=True, verbose_name=_("Created"))
    updated = models.DateTimeField(auto_now=True, verbose_name=_("Updated"))
    slug = models.SlugField(
        max_length=255, unique=True, editable=False, null=True, blank=True
    )

    def save(self, *args, **kwargs):
        if not self.slug:
            base_slug = slugify(f"{self.last_name} {self.first_name}")
            self.slug = base_slug
            counter = 1

            while (
                self.__class__.objects.filter(slug=self.slug)
                .exclude(pk=self.pk)
                .exists()
            ):
                self.slug = f"{base_slug}-{counter}"
                counter += 1
        super().save(*args, **kwargs)

    class Meta:
        constraints = [
            models.UniqueConstraint(
                fields=['dealer', 'email'],
                name='unique_customer_email_per_dealer'
            )
        ]
        verbose_name = _("Customer")
        verbose_name_plural = _("Customers")
        indexes = [
            models.Index(fields=["title"]),
            models.Index(fields=["first_name"]),
            models.Index(fields=["last_name"]),
            models.Index(fields=["email"]),
            models.Index(fields=["phone_number"]),
        ]

    def __str__(self):
        # middle = f" {self.middle_name}" if self.middle_name else ""
        return f"{self.first_name} {self.last_name}"

    @property
    def full_name(self):
        return f"{self.first_name} {self.last_name}"

    def create_customer_model(self, for_lead=False):
        customer_dict = to_dict(self)
        customer = self.dealer.entity.get_customers().filter(email=self.email).first()
        if not customer:
            customer = self.dealer.entity.create_customer(
                commit=False,
                customer_model_kwargs={
                    "customer_name": self.full_name,
                    "address_1": self.address,
                    "phone": self.phone_number,
                    "email": self.email,
                },
            )
            try:
                customer.additional_info.update({"customer_info": customer_dict})
            except Exception:
                pass
        customer.active = False if for_lead else True
        customer.save()
        self.customer_model = customer
        self.save()
        return customer

    def update_user_model(self):
        user = self.user
        user.first_name = self.first_name
        user.last_name = self.last_name
        user.email = self.email
        user.save()
        return user

    def update_customer_model(self):
        customer_dict = to_dict(self)
        customer = self.customer_model
        customer.customer_name = self.full_name
        customer.address_1 = self.address
        customer.phone = self.phone_number
        customer.email = self.email
        try:
            customer.additional_info.update({"customer_info": customer_dict})
        except Exception:
            pass
        customer.save()
        return customer

    def create_user_model(self, for_lead=False):
        user, created = User.objects.get_or_create(
            username=self.email,
            defaults={
                'email': self.email,
                'first_name': self.first_name,
                'last_name': self.last_name,
                'password': make_random_password(),
                'is_staff': False,
                'is_superuser': False,
                'is_active': False if for_lead else True,
            },
        )
        self.user = user
        self.save()
        return user

    def deactivate_account(self):
        self.active = False
        self.customer_model.active = False
        self.user.is_active = False
        self.customer_model.save()
        self.user.save()
        self.save()

    def activate_account(self):
        self.active = True
        self.customer_model.active = True
        self.user.is_active = True
        self.customer_model.save()
        self.user.save()
        self.save()

    def permenant_delete(self):
        self.customer_model.delete()
        self.user.delete()
        self.delete()


class Organization(models.Model, LocalizedNameMixin):
    dealer = models.ForeignKey(
        Dealer, on_delete=models.CASCADE, related_name="organizations"
    )
    customer_model = models.ForeignKey(
        CustomerModel, on_delete=models.SET_NULL, null=True
    )
    user = models.OneToOneField(
        User, on_delete=models.CASCADE, related_name="organization_profile"
    )
    name = models.CharField(max_length=255, verbose_name=_("Name"))
    arabic_name = models.CharField(max_length=255, verbose_name=_("Arabic Name"))
    crn = models.CharField(
        max_length=15, verbose_name=_("Commercial Registration Number")
    )
    vrn = models.CharField(max_length=15, verbose_name=_("VAT Registration Number"))
    email = models.EmailField(verbose_name=_("Email"))
    phone_number = PhoneNumberField(region="SA", verbose_name=_("Phone Number"))
    address = models.CharField(
        max_length=200, blank=True, null=True, verbose_name=_("Address")
    )
    logo = models.ImageField(
        upload_to="logos", blank=True, null=True, verbose_name=_("Logo"),default="default-image/user.jpg"
    )
    thumbnail = ImageSpecField(
        source="logo",
        processors=[ResizeToFill(40, 40)],
        format="WEBP",
        options={"quality": 80},
    )
    active = models.BooleanField(default=True, verbose_name=_("Active"))
    created = models.DateTimeField(auto_now_add=True, verbose_name=_("Created"))
    updated = models.DateTimeField(auto_now=True, verbose_name=_("Updated"))
    slug = models.SlugField(
        max_length=255, unique=True, editable=False, null=True, blank=True
    )

    def save(self, *args, **kwargs):
        if not self.slug:
            base_slug = slugify(f"{self.name}")
            self.slug = base_slug
            counter = 1

            while (
                self.__class__.objects.filter(slug=self.slug)
                .exclude(pk=self.pk)
                .exists()
            ):
                self.slug = f"{base_slug}-{counter}"
                counter += 1
        super().save(*args, **kwargs)

    class Meta:
        verbose_name = _("Organization")
        verbose_name_plural = _("Organizations")
        indexes = [
            models.Index(fields=["name"]),
            models.Index(fields=["email"]),
            models.Index(fields=["phone_number"]),
        ]

    def __str__(self):
        return self.name

    def create_customer_model(self, for_lead=False):
        customer_dict = to_dict(self)
        customer = self.dealer.entity.create_customer(
            commit=False,
            customer_model_kwargs={
                "customer_name": self.name,
                "address_1": self.address,
                "phone": self.phone_number,
                "email": self.email,
            },
        )
        try:
            customer.additional_info.update({"customer_info": customer_dict})
        except Exception:
            pass
        customer.active = False if for_lead else True
        customer.save()
        self.customer_model = customer
        self.save()
        return customer

    def update_user_model(self):
        user = self.user
        user.first_name = self.name
        user.email = self.email
        user.save()
        return user

    def update_customer_model(self):
        customer_dict = to_dict(self)
        customer = self.customer_model
        customer.customer_name = self.name
        customer.address_1 = self.address
        customer.phone = self.phone_number
        customer.email = self.email
        try:
            customer.additional_info.update({"customer_info": customer_dict})
        except Exception:
            pass
        customer.save()
        return customer

    def create_user_model(self, for_lead=False):
        user = User.objects.create_user(
            username=self.email,
            email=self.email,
            first_name=self.name,
            password=make_random_password(),
            is_staff=False,
            is_superuser=False,
            is_active=False if for_lead else True,
        )
        self.user = user
        self.save()
        return user

    def deactivate_account(self):
        self.active = False
        self.user.is_active = False
        self.customer_model.active = False
        self.user.save()
        self.customer_model.save()
        self.save()

    def activate_account(self):
        self.active = True
        self.customer_model.active = True
        self.user.is_active = True
        self.customer_model.save()
        self.user.save()
        self.save()

    def permenant_delete(self):
        self.user.delete()
        self.customer_model.delete()
        self.delete()


class Representative(models.Model, LocalizedNameMixin):
    dealer = models.ForeignKey(
        Dealer, on_delete=models.CASCADE, related_name="representatives"
    )
    name = models.CharField(max_length=255, verbose_name=_("Name"))
    arabic_name = models.CharField(max_length=255, verbose_name=_("Arabic Name"))
    id_number = models.CharField(
        max_length=10, unique=True, verbose_name=_("ID Number")
    )
    phone_number = PhoneNumberField(region="SA", verbose_name=_("Phone Number"))
    email = models.EmailField(max_length=255, verbose_name=_("Email Address"))
    address = models.CharField(
        max_length=200, blank=True, null=True, verbose_name=_("Address")
    )
    organization = models.ManyToManyField(Organization, related_name="representatives")

    class Meta:
        verbose_name = _("Representative")
        verbose_name_plural = _("Representatives")

    def __str__(self):
        return self.name


class Lead(models.Model):
    dealer = models.ForeignKey(Dealer, on_delete=models.CASCADE, related_name="leads")
    first_name = models.CharField(max_length=50, verbose_name=_("First Name"))
    last_name = models.CharField(max_length=50, verbose_name=_("Last Name"))
    email = models.EmailField(verbose_name=_("Email"))
    phone_number = PhoneNumberField(region="SA", verbose_name=_("Phone Number"))
    address = models.CharField(
        max_length=200, blank=True, null=True, verbose_name=_("Address")
    )
    lead_type = models.CharField(
        max_length=50,
        choices=[("customer", _("Customer")), ("organization", _("Organization"))],
        verbose_name=_("Lead Type"),
        default="customer",
    )
    customer = models.ForeignKey(
        Customer,
        on_delete=models.CASCADE,
        related_name="customer_leads",
        null=True,
        blank=True,
    )
    organization = models.ForeignKey(
        Organization,
        on_delete=models.CASCADE,
        related_name="organization_leads",
        null=True,
        blank=True,
    )
    id_car_make = models.ForeignKey(
        CarMake,
        on_delete=models.DO_NOTHING,
        blank=True,
        null=True,
        verbose_name=_("Make"),
    )
    id_car_model = models.ForeignKey(
        CarModel,
        on_delete=models.DO_NOTHING,
        blank=True,
        null=True,
        verbose_name=_("Model"),
    )

    source = models.CharField(
        max_length=50, choices=Sources.choices, verbose_name=_("Source")
    )
    channel = models.CharField(
        max_length=50, choices=Channel.choices, verbose_name=_("Channel")
    )
    staff = models.ForeignKey(
        Staff,
        on_delete=models.SET_NULL,
        blank=True,
        null=True,
        related_name="assigned",
        verbose_name=_("Assigned"),
    )
    status = models.CharField(
        max_length=50,
        choices=Status.choices,
        verbose_name=_("Status"),
        db_index=True,
        default=Status.NEW,
    )
    next_action = models.CharField(
        max_length=255, verbose_name=_("Next Action"), blank=True, null=True
    )
    next_action_date = models.DateTimeField(
        verbose_name=_("Next Action Date"), blank=True, null=True
    )
    is_converted = models.BooleanField(default=False)
    converted_at = models.DateTimeField(null=True, blank=True)

    created = models.DateTimeField(
        auto_now_add=True, verbose_name=_("Created"), db_index=True
    )
    updated = models.DateTimeField(auto_now=True, verbose_name=_("Updated"))
    slug = models.SlugField(unique=True, blank=True, null=True)

    class Meta:
        verbose_name = _("Lead")
        verbose_name_plural = _("Leads")
        indexes = [
            models.Index(fields=["dealer"]),
            models.Index(fields=["customer"]),
            models.Index(fields=["organization"]),
            models.Index(fields=["staff"]),
            models.Index(fields=["first_name"]),
            models.Index(fields=["last_name"]),
            models.Index(fields=["email"]),
            models.Index(fields=["phone_number"]),
            models.Index(fields=["created"]),
        ]

    def __str__(self):
        return f"{self.first_name} {self.last_name}"

    def get_user_model(self):
        return User.objects.get(email=self.email) or None

    @property
    def activities(self):
        return Activity.objects.filter(dealer=self.dealer, object_id=self.id)

    def to_dict(self):
        return {
            "first_name": str(self.first_name),
            "last_name": str(self.last_name),
            "email": str(self.email),
            "phone_number": str(self.phone_number),
            "make": str(self.id_car_make.name),
            "model": str(self.id_car_model.name),
            "created_at": str(self.created.strftime("%Y-%m-%d")),
        }

    @property
    def full_name(self):
        return f"{self.first_name} {self.last_name}"

    def convert_to_customer(self):
        self.status = Status.CONVERTED
        self.is_converted = True
        self.converted_at = datetime.now()
        if self.customer:
            self.customer.activate_account()
            self.customer.save()
        if self.organization:
            self.organization.activate_account()
            self.organization.save()
        self.save()
        return self.get_customer_model()

    @property
    def needs_follow_up(self):
        latest = self.activities.order_by("-updated").first()
        if not latest:
            return True
        return (timezone.now() - latest.updated).days > 3

    @property
    def stale_leads(self):
        latest = self.activities.order_by("-updated").first()
        if not latest:
            return True
        return (timezone.now() - latest.updated).days > 7

    def get_customer_model(self):
        if self.customer:
            return self.customer.customer_model
        if self.organization:
            return self.organization.customer_model

    def get_latest_schedule(self):
        return self.schedules.order_by("-scheduled_at").first()

    def get_latest_schedules(self):
        return (
            self.schedules.filter(scheduled_at__gt=now())
            .exclude(status="Canceled")
            .order_by("-scheduled_at")[:5]
        )

    def get_all_schedules(self):
        return self.schedules.all().order_by("-scheduled_at")

    def get_calls(self):
        return self.get_all_schedules().filter(scheduled_type="call")

    def get_meetings(self):
        return self.get_all_schedules().filter(scheduled_type="meeting")

    def get_emails(self):
        return Email.objects.filter(content_type__model="lead", object_id=self.pk)

    def get_notes(self):
        return Notes.objects.filter(content_type__model="lead", object_id=self.pk)

    def get_activities(self):
        return Activity.objects.filter(
            dealer=self.dealer, content_type__model="lead", object_id=self.pk
        ).order_by("-updated")

    def get_opportunities(self):
        return Opportunity.objects.filter(lead=self)

    @property
    def get_current_action(self):
        return (
            Activity.objects.filter(
                dealer=self.dealer, content_type__model="lead", object_id=self.pk
            )
            .order_by("-updated")
            .first()
        )
    def get_absolute_url(self):
        return reverse("lead_detail", args=[self.dealer.slug,self.slug])

    def save(self, *args, **kwargs):
        if not self.slug:
            base_slug = slugify(f"{self.last_name} {self.first_name}")
            self.slug = base_slug
            counter = 1

            while (
                self.__class__.objects.filter(slug=self.slug)
                .exclude(pk=self.pk)
                .exists()
            ):
                self.slug = f"{base_slug}-{counter}"
                counter += 1
        super().save(*args, **kwargs)


class Schedule(models.Model):
    PURPOSE_CHOICES = [
        ("product_demo", _("Product Demo")),
        ("follow_up_call", _("Follow-Up Call")),
        ("contract_discussion", _("Contract Discussion")),
        ("sales_meeting", _("Sales Meeting")),
        ("support_call", _("Support Call")),
        ("other", _("Other")),
    ]
    ScheduledType = [
        ("call", _("Call")),
        ("meeting", _("Meeting")),
        ("email", _("Email")),
    ]
    ScheduleStatusChoices = [
        ("scheduled", _("Scheduled")),
        ("completed", _("Completed")),
        ("canceled", _("Canceled")),
    ]
    dealer = models.ForeignKey(Dealer, on_delete=models.CASCADE)
    content_type = models.ForeignKey(ContentType, on_delete=models.CASCADE)
    object_id = models.PositiveIntegerField()
    content_object = GenericForeignKey("content_type", "object_id")
    customer = models.ForeignKey(
        CustomerModel,
        on_delete=models.CASCADE,
        related_name="schedules",
        null=True,
        blank=True,
    )
    scheduled_by = models.ForeignKey(User, on_delete=models.CASCADE)
    purpose = models.CharField(max_length=200, choices=PURPOSE_CHOICES)
    scheduled_at = models.DateTimeField()
    start_time = models.TimeField(verbose_name=_("Start Time"), null=True, blank=True)
    end_time = models.TimeField(verbose_name=_("End Time"), null=True, blank=True)
    scheduled_type = models.CharField(
        max_length=200, choices=ScheduledType, default="Call"
    )
    completed = models.BooleanField(default=False, verbose_name=_("Completed"))
    notes = models.TextField(blank=True, null=True)
    status = models.CharField(
        max_length=200, choices=ScheduleStatusChoices, default="Scheduled"
    )
    created_at = models.DateTimeField(auto_now_add=True)
    updated_at = models.DateTimeField(auto_now=True)

    def __str__(self):
        return f"Scheduled {self.purpose} on {self.scheduled_at}"

    @property
    def duration(self):
        return (self.end_time - self.start_time).seconds
    @property
    def schedule_past_date(self):
        if self.scheduled_at < now():
            return True
        return False

    @property
    def get_purpose(self):
        return self.purpose.replace("_", " ").title()
    class Meta:
        ordering = ["-scheduled_at"]
        verbose_name = _("Schedule")
        verbose_name_plural = _("Schedules")
        indexes = [
            models.Index(fields=["dealer"]),
            models.Index(fields=["customer"]),
            models.Index(fields=["content_type", "object_id"]),
            models.Index(fields=["scheduled_at"]),
        ]


class LeadStatusHistory(models.Model):
    lead = models.ForeignKey(
        Lead, on_delete=models.CASCADE, related_name="status_history"
    )
    old_status = models.CharField(
        max_length=50, choices=Status.choices, verbose_name=_("Old Status")
    )
    new_status = models.CharField(
        max_length=50, choices=Status.choices, verbose_name=_("New Status")
    )
    changed_by = models.ForeignKey(
        Staff, on_delete=models.DO_NOTHING, related_name="status_changes"
    )
    changed_at = models.DateTimeField(auto_now_add=True, verbose_name=_("Changed At"))

    class Meta:
        verbose_name = _("Lead Status History")
        verbose_name_plural = _("Lead Status Histories")

    def __str__(self):
        return f"{self.lead}: {self.old_status} → {self.new_status}"


def validate_probability(value):
    if value < 0 or value > 100:
        raise ValidationError(_("Probability must be between 0 and 100."))


class Opportunity(models.Model):
    dealer = models.ForeignKey(
        Dealer, on_delete=models.CASCADE, related_name="opportunities"
    )
    customer = models.ForeignKey(
        Customer,
        on_delete=models.CASCADE,
        related_name="opportunities",
        null=True,
        blank=True,
    )
    organization = models.ForeignKey(
        Organization,
        on_delete=models.SET_NULL,
        null=True,
        blank=True,
        verbose_name=_("Organization"),
    )
    car = models.ForeignKey(
        Car, on_delete=models.SET_NULL, null=True, blank=True, verbose_name=_("Car")
    )
    crn = models.CharField(max_length=20, verbose_name=_("CRN"), blank=True, null=True)
    vrn = models.CharField(max_length=20, verbose_name=_("VRN"), blank=True, null=True)
    salary = models.DecimalField(
        max_digits=10, decimal_places=2, verbose_name=_("Salary"), blank=True, null=True
    )
    priority = models.CharField(
        max_length=20,
        choices=[("high", "High"), ("medium", "Medium"), ("low", "Low")],
        verbose_name=_("Priority"),
        default="medium",
    )
    stage = models.CharField(
        max_length=20, choices=Stage.choices, verbose_name=_("Stage")
    )
    staff = models.ForeignKey(
        Staff,
        on_delete=models.SET_NULL,
        null=True,
        related_name="owner",
        verbose_name=_("Owner"),
    )
    lead = models.OneToOneField(
        "Lead",
        related_name="opportunity",
        on_delete=models.CASCADE,
        null=True,
        blank=True,
    )
    probability = models.PositiveIntegerField(validators=[validate_probability])
    amount = models.DecimalField(
        max_digits=10,
        decimal_places=2,
        verbose_name=_("Amount"),
    )
    expected_revenue = models.DecimalField(
        max_digits=10,
        decimal_places=2,
        verbose_name=_("Expected Revenue"),
        blank=True,
        null=True,
    )
    vehicle_of_interest_make = models.CharField(max_length=50, blank=True, null=True)
    vehicle_of_interest_model = models.CharField(max_length=100, blank=True, null=True)
    expected_close_date = models.DateField(blank=True, null=True)
    created = models.DateTimeField(auto_now_add=True, verbose_name=_("Created"))
    updated = models.DateTimeField(auto_now=True, verbose_name=_("Updated"))
    estimate = models.OneToOneField(
        EstimateModel,
        related_name="opportunity",
        on_delete=models.SET_NULL,
        null=True,
        blank=True,
    )
    slug = models.SlugField(
        null=True,
        blank=True,
        unique=True,
        verbose_name=_("Slug"),
        help_text=_("Unique slug for the opportunity."),
    )
    loss_reason = models.CharField(max_length=255, blank=True, null=True)

    def get_notes(self):
        return self._get_filter(Notes).order_by("-created")

    def get_activities(self):
        return self._get_filter(Activity)

    def get_tasks(self):
        return self._get_filter(Tasks)

    def get_meetings(self):
        return self.lead.get_meetings()

    def get_calls(self):
        return self.lead.get_calls()

    def get_schedules(self):
        # qs = Schedule.objects.filter(
        #     dealer=self.dealer,
        #     content_type__model__in=["lead"], object_id=self.object.id,
        #     scheduled_by=self.request.user
        # )
        return (
            self.lead.get_all_schedules()
            .filter(scheduled_at__gt=timezone.now())
            .order_by("scheduled_at")
        )

    def get_emails(self):
        return self._get_filter(Email)

    def _get_filter(self, Model):
        objects = Model.objects.filter(
            content_type__model="opportunity", object_id=self.id
        )
        lead_objects = Model.objects.filter(
            content_type__model="lead", object_id=self.lead.id
        )
        objects = objects.union(lead_objects).order_by("-created")
        return objects

    def save(self, *args, **kwargs):
        if self.amount:
            self.expected_revenue = self.amount * self.probability / 100
        opportinity_for = ""
        if self.lead.lead_type == "customer":
            self.customer = self.lead.customer
            opportinity_for = self.customer.first_name + " " + self.customer.last_name
        elif self.lead.lead_type == "organization":
            self.organization = self.lead.organization
            opportinity_for = self.organization.name

        if not self.slug:
            self.slug = slugify(f"opportunity {opportinity_for}")
        super().save(*args, **kwargs)

    class Meta:
        verbose_name = _("Opportunity")
        verbose_name_plural = _("Opportunities")
        indexes = [
            models.Index(fields=["dealer"]),
            models.Index(fields=["customer"]),
            models.Index(fields=["car"]),
            models.Index(fields=["lead"]),
            models.Index(fields=["organization"]),
            models.Index(fields=["created"]),
        ]

    def __str__(self):
        if self.customer:
            return (
                f"Opportunity for {self.customer.first_name} {self.customer.last_name}"
            )
        return f"Opportunity for {self.organization.name}"


class Notes(models.Model):
    dealer = models.ForeignKey(Dealer, on_delete=models.CASCADE, related_name="notes")
    content_type = models.ForeignKey(ContentType, on_delete=models.CASCADE)
    object_id = models.UUIDField()
    content_object = GenericForeignKey("content_type", "object_id")
    note = models.TextField(verbose_name=_("Note"))
    created_by = models.ForeignKey(
        User, on_delete=models.DO_NOTHING, related_name="notes_created"
    )
    created = models.DateTimeField(auto_now_add=True, verbose_name=_("Created"))
    updated = models.DateTimeField(auto_now=True, verbose_name=_("Updated"))

    class Meta:
        verbose_name = _("Note")
        verbose_name_plural = _("Notes")
        indexes = [
            models.Index(fields=["dealer"], name="note_dealer_idx"),
            models.Index(fields=["created_by"], name="note_created_by_idx"),
            models.Index(fields=["content_type"], name="note_content_type_idx"),
            models.Index(
                fields=["content_type", "object_id"], name="note_content_object_idx"
            ),
            models.Index(fields=["created"], name="note_created_date_idx"),
            models.Index(fields=["updated"], name="note_updated_date_idx"),
            models.Index(fields=["dealer", "created"], name="note_dealer_created_idx"),
            models.Index(
                fields=["content_type", "object_id", "created"],
                name="note_content_obj_created_idx",
            ),
        ]

    def __str__(self):
        return f"Note by {self.created_by.first_name} on {self.content_object}"


class Tasks(models.Model):
    dealer = models.ForeignKey(Dealer, on_delete=models.CASCADE, related_name="tasks")
    content_type = models.ForeignKey(ContentType, on_delete=models.CASCADE)
    object_id = models.UUIDField()
    content_object = GenericForeignKey("content_type", "object_id")
    title = models.CharField(max_length=255, verbose_name=_("Title"))
    description = models.TextField(verbose_name=_("Description"), null=True, blank=True)
    due_date = models.DateField(verbose_name=_("Due Date"))
    start_time = models.TimeField(verbose_name=_("Start Time"), null=True, blank=True)
    end_time = models.TimeField(verbose_name=_("End Time"), null=True, blank=True)
    completed = models.BooleanField(default=False, verbose_name=_("Completed"))
    assigned_to = models.ForeignKey(
        User,
        on_delete=models.DO_NOTHING,
        related_name="tasks_assigned",
        null=True,
        blank=True,
    )
    created_by = models.ForeignKey(
        User, on_delete=models.DO_NOTHING, related_name="tasks_created"
    )
    created = models.DateTimeField(auto_now_add=True, verbose_name=_("Created"))
    updated = models.DateTimeField(auto_now=True, verbose_name=_("Updated"))

    class Meta:
        verbose_name = _("Task")
        verbose_name_plural = _("Tasks")
        indexes = [
            models.Index(fields=["dealer"], name="task_dealer_idx"),
            models.Index(fields=["created_by"], name="task_created_by_idx"),
            models.Index(fields=["content_type"], name="task_content_type_idx"),
            models.Index(
                fields=["content_type", "object_id"], name="task_content_object_idx"
            ),
            models.Index(fields=["created"], name="task_created_date_idx"),
            models.Index(fields=["updated"], name="task_updated_date_idx"),
            models.Index(fields=["dealer", "created"], name="task_dealer_created_idx"),
            models.Index(
                fields=["content_type", "object_id", "created"],
                name="task_content_obj_created_idx",
            ),
        ]

    def __str__(self):
        return f"Task by {self.created_by.email} on {self.content_object}"


class Email(models.Model):
    content_type = models.ForeignKey(ContentType, on_delete=models.CASCADE)
    object_id = models.UUIDField()
    content_object = GenericForeignKey("content_type", "object_id")
    from_email = models.TextField(verbose_name=_("From Email"), null=True, blank=True)
    to_email = models.TextField(verbose_name=_("To Email"), null=True, blank=True)
    subject = models.TextField(verbose_name=_("Subject"), null=True, blank=True)
    message = models.TextField(verbose_name=_("Message"), null=True, blank=True)
    status = models.CharField(
        max_length=20,
        choices=EmailStatus.choices,
        verbose_name=_("Status"),
        default=EmailStatus.OPEN,
    )
    created_by = models.ForeignKey(
        User, on_delete=models.DO_NOTHING, related_name="emails_created"
    )
    created = models.DateTimeField(auto_now_add=True, verbose_name=_("Created"))
    updated = models.DateTimeField(auto_now=True, verbose_name=_("Updated"))

    class Meta:
        verbose_name = _("Email")
        verbose_name_plural = _("Emails")
        indexes = [
            models.Index(fields=["created_by"], name="email_created_by_idx"),
            models.Index(fields=["content_type"], name="email_content_type_idx"),
            models.Index(
                fields=["content_type", "object_id"], name="email_content_object_idx"
            ),
            models.Index(fields=["created"], name="email_created_date_idx"),
            models.Index(fields=["updated"], name="email_updated_date_idx"),
            models.Index(
                fields=["content_type", "object_id", "created"],
                name="email_content_obj_created_idx",
            ),
        ]

    def __str__(self):
        return f"Email by {self.created_by.first_name} on {self.content_object}"


class Activity(models.Model):
    dealer = models.ForeignKey(
        Dealer, on_delete=models.CASCADE, related_name="activities"
    )
    content_type = models.ForeignKey(ContentType, on_delete=models.DO_NOTHING)
    object_id = models.PositiveIntegerField()
    content_object = GenericForeignKey("content_type", "object_id")
    activity_type = models.CharField(
        max_length=50, choices=ActionChoices.choices, verbose_name=_("Activity Type")
    )
    notes = models.TextField(blank=True, null=True, verbose_name=_("Notes"))
    created_by = models.ForeignKey(
        User, on_delete=models.DO_NOTHING, related_name="activities_created_by"
    )
    created = models.DateTimeField(auto_now_add=True, verbose_name=_("Created"))
    updated = models.DateTimeField(auto_now=True, verbose_name=_("Updated"))

    class Meta:
        verbose_name = _("Activity")
        verbose_name_plural = _("Activities")
        indexes = [
            models.Index(fields=["created_by"], name="activity_created_by_idx"),
            models.Index(fields=["content_type"], name="activity_content_type_idx"),
            models.Index(
                fields=["content_type", "object_id"], name="activity_content_object_idx"
            ),
            models.Index(fields=["created"], name="activity_created_date_idx"),
            models.Index(fields=["updated"], name="activity_updated_date_idx"),
            models.Index(
                fields=["content_type", "object_id", "created"],
                name="a_content_obj_created_idx",
            ),
        ]

    def __str__(self):
        return f"{self.get_activity_type_display()} by {self.created_by.get_full_name} on {self.content_object}"


class Notification(models.Model):
    user = models.ForeignKey(
        User, on_delete=models.CASCADE, related_name="notifications"
    )
    message = models.TextField(verbose_name=_("Message"))
    is_read = models.BooleanField(default=False, verbose_name=_("Is Read"))
    created = models.DateTimeField(auto_now_add=True, verbose_name=_("Created"))

    class Meta:
        verbose_name = _("Notification")
        verbose_name_plural = _("Notifications")
        ordering = ["-created"]

        indexes = [
            models.Index(fields=["user"], name="notification_user_idx"),
            models.Index(fields=["is_read"], name="notification_is_read_idx"),
            models.Index(fields=["created"], name="notification_created_date_idx"),
        ]

    def __str__(self):
        return self.message

    @classmethod
    def has_new_notifications(cls, user):
        return cls.objects.filter(user=user, is_read=False).exists()

    @classmethod
    def get_notification_data(cls, user):
        return cls.objects.filter(user=user)


class Vendor(models.Model, LocalizedNameMixin):
    dealer = models.ForeignKey(Dealer, on_delete=models.CASCADE, related_name="vendors")
    crn = models.CharField(
        max_length=10, unique=True, verbose_name=_("Commercial Registration Number")
    )
    vrn = models.CharField(
        max_length=15, unique=True, verbose_name=_("VAT Registration Number")
    )
    vendor_model = models.ForeignKey(
        VendorModel,
        on_delete=models.DO_NOTHING,
        verbose_name=_("Vendor Model"),
        null=True,
        blank=True,
    )
    arabic_name = models.CharField(max_length=255, verbose_name=_("Arabic Name"))
    name = models.CharField(max_length=255, verbose_name=_("English Name"))
    contact_person = models.CharField(max_length=100, verbose_name=_("Contact Person"))
    phone_number = PhoneNumberField(region="SA", verbose_name=_("Phone Number"))
    email = models.EmailField(max_length=255, verbose_name=_("Email Address"))
    address = models.CharField(max_length=200, verbose_name=_("Address"))
    logo = models.ImageField(
        upload_to="logos/vendors", blank=True, null=True, verbose_name=_("Logo"),default="default-image/user.jpg"
    )
    thumbnail = ImageSpecField(
        source="logo",
        processors=[ResizeToFill(40, 40)],
        format="WEBP",
        options={"quality": 80},
    )
    active = models.BooleanField(default=True, verbose_name=_("Active"))
    created_at = models.DateTimeField(auto_now_add=True, verbose_name=_("Created At"))
    slug = models.SlugField(
        max_length=255, unique=True, verbose_name=_("Slug"), null=True, blank=True
    )

    def get_absolute_url(self):
        return reverse(
            "vendor_detail", kwargs={"dealer_slug": self.dealer.slug, "slug": self.slug}
        )

    def save(self, *args, **kwargs):
        if not self.slug:
            base_slug = slugify(self.name)
            self.slug = base_slug
            counter = 1

            while (
                self.__class__.objects.filter(slug=self.slug)
                .exclude(pk=self.pk)
                .exists()
            ):
                self.slug = f"{base_slug}-{counter}"
                counter += 1
        super().save(*args, **kwargs)

    class Meta:
        verbose_name = _("Vendor")
        verbose_name_plural = _("Vendors")
        indexes = [
            models.Index(fields=["slug"], name="vendor_slug_idx"),
            models.Index(fields=["active"], name="vendor_active_idx"),
            models.Index(fields=["crn"], name="vendor_crn_idx"),
            models.Index(fields=["vrn"], name="vendor_vrn_idx"),
        ]

    def __str__(self):
        return self.name

    def create_vendor_model(self):
        entity = self.dealer.entity
        additionals = to_dict(self)
        if not self.vendor_model:
            vendor = entity.create_vendor(
                vendor_model_kwargs={
                    "vendor_name": self.name,
                    "vendor_number": self.crn,
                    "address_1": self.address,
                    "phone": self.phone_number,
                    "email": self.email,
                    "tax_id_number": self.vrn,
                    "active": True,
                    "hidden": False,
                    "additional_info": additionals,
                }
            )
            self.vendor_model = vendor
            self.save()

    def update_vendor_model(self):
        additionals = to_dict(self)
        self.vendor_model.vendor_name = self.name
        self.vendor_model.vendor_number = self.crn
        self.vendor_model.address_1 = self.address
        self.vendor_model.phone = self.phone_number
        self.vendor_model.email = self.email
        self.vendor_model.tax_id_number = self.vrn
        self.vendor_model.additional_info = additionals
        self.vendor_model.save()

    def create_vendor_account(self, role):
        entity = self.dealer.entity
        coa = entity.get_default_coa()
        last_account = (
            entity.get_all_accounts().filter(role=role).order_by("-created").first()
        )

        if len(last_account.code) == 4:
            code = f"{int(last_account.code)}{1:03d}"
        elif len(last_account.code) > 4:
            code = f"{int(last_account.code) + 1}"

        if (
            not entity.get_all_accounts()
            .filter(
                name=self.name,
                role=role,
                coa_model=coa,
                balance_type="credit",
                active=True,
            )
            .exists()
        ):
            entity.create_account(
                name=self.name,
                code=code,
                role=role,
                coa_model=coa,
                balance_type="credit",
                active=True,
            )

    def activate_account(self):
        self.active = True
        self.vendor_model.active = True
        self.save()

    def permenant_delete(self):
        self.vendor_model.delete()
        self.delete()


class Payment(models.Model):
    METHOD_CHOICES = [
        ("cash", _("cash")),
        ("credit", _("credit")),
        ("transfer", _("transfer")),
        ("debit", _("debit")),
        ("sadad", _("SADAD")),
    ]

    amount = models.DecimalField(
        max_digits=10, decimal_places=2, verbose_name=_("amount")
    )
    payment_method = models.CharField(
        choices=METHOD_CHOICES, max_length=50, verbose_name=_("method")
    )
    reference_number = models.CharField(
        max_length=100, null=True, blank=True, verbose_name=_("reference number")
    )
    payment_date = models.DateField(auto_now_add=True, verbose_name=_("date"))
    invoice = models.ForeignKey(
        InvoiceModel,
        on_delete=models.CASCADE,
        related_name="payments",
        verbose_name=_("invoice"),
        null=True,
        blank=True,
    )

    class Meta:
        verbose_name = _("payment")
        verbose_name_plural = _("payments")

    def __str__(self):
        return f"Payment of {self.amount} on {self.payment_date}"


class Refund(models.Model):
    payment = models.OneToOneField(
        Payment, on_delete=models.CASCADE, related_name="refund"
    )
    amount = models.DecimalField(
        max_digits=10, decimal_places=2, verbose_name=_("amount")
    )
    reason = models.TextField(blank=True, verbose_name=_("reason"))
    refund_date = models.DateField(auto_now_add=True, verbose_name=_("refund date"))

    class Meta:
        verbose_name = _("refund")
        verbose_name_plural = _("refunds")

    def __str__(self):
        return f"Refund of {self.amount} on {self.refund_date}"


class UserActivityLog(models.Model):
    user = models.ForeignKey(User, on_delete=models.CASCADE)
    action = models.TextField()
    timestamp = models.DateTimeField(auto_now_add=True)

    class Meta:
        verbose_name = _("User Activity Log")
        verbose_name_plural = _("User Activity Logs")
        ordering = ["-timestamp"]

    def __str__(self):
        return f"{self.user.email} - {self.action} - {self.timestamp}"


class SaleOrder(models.Model):
    STATUS_CHOICES = [
        ("PENDING_APPROVAL", "Pending Approval"),
        ("APPROVED", "Approved"),
        ("IN_FINANCING", "In Financing"),
        ("PARTIALLY_PAID", "Partially Paid"),
        ("FULLY_PAID", "Fully Paid"),
        ("PENDING_DELIVERY", "Pending Delivery"),
        ("DELIVERED", "Delivered"),
        ("CANCELLED", "Cancelled"),
    ]
    dealer = models.ForeignKey(
        Dealer, on_delete=models.CASCADE, related_name="sale_orders"
    )
    estimate = models.ForeignKey(
        EstimateModel,
        on_delete=models.CASCADE,
        related_name="sale_orders",
        verbose_name=_("Estimate"),
        null=True,
        blank=True,
    )
    invoice = models.ForeignKey(
        InvoiceModel,
        on_delete=models.CASCADE,
        related_name="sale_orders",
        verbose_name=_("Invoice"),
        null=True,
        blank=True,
    )
    customer = models.ForeignKey(
        Customer,
        on_delete=models.CASCADE,
        related_name="sale_orders",
        verbose_name=_("Customer"),
        null=True,
        blank=True,
    )
    opportunity = models.ForeignKey(
        Opportunity,
        on_delete=models.CASCADE,
        related_name="sale_orders",
        verbose_name=_("Opportunity"),
        null=True,
        blank=True,
    )
    comments = models.TextField(blank=True, null=True)
    formatted_order_id = models.CharField(max_length=255, unique=True, editable=False)

    # Status and Dates
    status = models.CharField(
        max_length=20,
        choices=STATUS_CHOICES,
        default="PENDING_APPROVAL",
        help_text="Current status of the sales order.",
    )
    order_date = models.DateTimeField(
        default=timezone.now, help_text="The date and time the sales order was created."
    )
    expected_delivery_date = models.DateField(
        blank=True, null=True, help_text="The planned date for vehicle delivery."
    )
    actual_delivery_date = models.DateTimeField(
        blank=True,
        null=True,
        help_text="The actual date and time the vehicle was delivered.",
    )
    cancelled_date = models.DateTimeField(
        blank=True,
        null=True,
        help_text="The date and time the order was cancelled, if applicable.",
    )
    cancellation_reason = models.TextField(
        blank=True, null=True, help_text="Reason for cancellation, if applicable."
    )

    created_at = models.DateTimeField(auto_now_add=True)
    updated_at = models.DateTimeField(auto_now=True)
    created_by = models.ForeignKey(
        settings.AUTH_USER_MODEL,
        on_delete=models.SET_NULL,
        null=True,
        blank=True,
        related_name="created_sales_orders",
        help_text="The user who created this sales order.",
    )
    last_modified_by = models.ForeignKey(
        settings.AUTH_USER_MODEL,
        on_delete=models.SET_NULL,
        null=True,
        blank=True,
        related_name="modified_sales_orders",
        help_text="The user who last modified this sales order.",
    )

    class Meta:
        verbose_name = _("Sales Order")
        verbose_name_plural = _("Sales Orders")
        ordering = ["-order_date"]  # Order by most recent first
        indexes = [
            models.Index(fields=["dealer"]),
            models.Index(fields=["estimate"]),
            models.Index(fields=["invoice"]),
            models.Index(fields=["opportunity"]),
            models.Index(fields=["customer"]),
            models.Index(fields=["status"]),
            models.Index(fields=["order_date"]),
            models.Index(fields=["expected_delivery_date"]),
            models.Index(fields=["actual_delivery_date"]),
            models.Index(fields=["cancelled_date"]),
        ]

    def save(self, *args, **kwargs):
        if not self.formatted_order_id:
            last_order = SaleOrder.objects.order_by("-id").first()
            if last_order:
                next_id = last_order.id + 1
            else:
                next_id = 1
            year = get_localdate().year
            self.formatted_order_id = f"O-{year}-{next_id:09d}"

        super().save(*args, **kwargs)

    def __str__(self):
        return f"Sales Order #{self.formatted_order_id} for {self.customer.first_name} "

    @property
    def full_name(self):
        return f"{self.customer.first_name} {self.customer.last_name}"

    @property
    def price(self):
        return self.car.finances.marked_price

    @property
    def items(self):
        # Check if an invoice is associated with this SaleOrder
        if self.invoice:
            # Check if get_itemtxs_data returns data before proceeding
            # You might want to handle what get_itemtxs_data returns if it can be empty
            item_data = self.estimate.get_itemtxs_data()[0]
            if item_data:
                return item_data
        return []  # Return an empty list if no invoice or no item data

    @property
    def cars(self):
        # Check if self.items is not empty before trying to iterate
        if (
            self.items.exists() if hasattr(self.items, "exists") else self.items
        ):  # Handle both QuerySet and list
            # Ensure x is an *instance* of ItemTransactionModel
            # item_model should be a ForeignKey to your CarModel within ItemTransactionModel
            return [
                x.item_model.car
                for x in self.items
                if hasattr(x, "item_model") and hasattr(x.item_model, "car")
            ]
        return []  # Return an empty list if no items or no associated cars


class CustomGroup(models.Model):
    name = models.CharField(max_length=100)
    dealer = models.ForeignKey(Dealer, on_delete=models.CASCADE, related_name="groups")
    group = models.OneToOneField(
        "auth.Group", verbose_name=_("Group"), on_delete=models.CASCADE
    )

    class Meta:
        verbose_name = _("Custom Group")
        verbose_name_plural = _("Custom Groups")
        indexes = [
            models.Index(fields=["name"]),
            models.Index(fields=["dealer"]),
            models.Index(fields=["group"]),
        ]

    @property
    def entity(self):
        return self.dealer.entity

    @property
    def users(self):
        return self.group.user_set.exclude(email=self.dealer.user.email).all()

    @property
    def permissions(self):
        return self.group.permissions.all()

    def clear_permissions(self):
        self.group.permissions.clear()

    def add_permission(self, permission):
        try:
            self.group.permissions.add(permission)
        except Permission.DoesNotExist:
            pass

    def __str__(self):
        return self.name

    def set_default_manager_permissions(self):
        self.clear_permissions()
        try:
            for perm in Permission.objects.filter(content_type__app_label="inventory"):
                self.add_permission(perm)
        except Exception:
            pass

    def set_default_permissions(self):
        self.clear_permissions()

        ######################################
        ######################################
        # MANAGER
        ######################################
        ######################################
        if self.name == "Manager":
            self.set_permissions(
                app="inventory",
                allowed_models=[
                    "car",
                    "carfinance",
                    "carlocation",
                    "customcard",
                    "cartransfer",
                    "carcolors",
                    "carequipment",
                    "interiorcolors",
                    "exteriorcolors",
                    "carreservation",
                    "lead",
                    "customgroup",
                    "saleorder",
                    "payment",
                    # "staff",
                    "schedule",
                    "activity",
                    "opportunity",
                    "vendor",
                    "customer",
                    "notes",
                    "tasks",
                    "activity",
                ],
            )
            self.set_permissions(
                app="django_ledger",
                allowed_models=[
                    "estimatemodel",
                    "invoicemodel",
                    "accountmodel",
                    "chartofaccountmodel",
                    "customermodel",
                    "billmodel",
                    "bankaccountmodel",
                    "itemmodel",
                    "vendormodel",
                    "journalentrymodel",
                    "purchaseordermodel",
                    "ledgermodel",
                    "transactionmodel",
                ],
                other_perms=[
                    "can_approve_estimatemodel",
                    "can_approve_billmodel",
                    "can_view_inventory",
                    "can_view_sales",
                    "can_view_crm",
                    "can_view_financials",
                    "can_view_reports",
                ],
            )
            ######################################
            ######################################
            # Inventory
            ######################################
            ######################################
        elif self.name == "Inventory":
            self.set_permissions(
                app="inventory",
                allowed_models=[
                    "car",
                    "carequipment",
                    "interiorcolors",
                    "exteriorcolors",
                    "carcolors",
                    "carlocation",
                    "customcard",
                    "carreservation",
                    "notes",
                    "tasks",
                    "activity",
                    "poitemsuploaded",
                ],
            )
            self.set_permissions(
                app="django_ledger",
                allowed_models=[],
                other_perms=[
                    "view_purchaseordermodel",
                ],
            )
            ######################################
            ######################################
            # Sales
            ######################################
            ######################################
        elif self.name == "Sales":
            self.set_permissions(
                app="django_ledger",
                allowed_models=["invoicemodel", "customermodel"],
            )
            self.set_permissions(
                app="inventory",
                allowed_models=[
                    "saleorder",
                    # "payment",
                    # "staff",
                    "schedule",
                    "activity",
                    "lead",
                    "opportunity",
                    "customer",
                    "organization",
                    "notes",
                    "tasks",
                    "leadactivity",
                ],
                other_perms=[
                    "view_car",
                    "view_carlocation",
                    "view_customcard",
                    "view_carcolors",
                    "view_cartransfer",
                    "can_view_inventory",
                    "can_view_sales",
                    "can_view_crm",
                    "view_estimatemodel",
                    "add_estimatemodel",
                    "change_estimatemodel",
                    "delete_estimatemodel",
                ],
            )
            ######################################
            ######################################
            # Accountant
            ######################################
            ######################################
        elif self.name == "Accountant":
            self.set_permissions(
                app="inventory",
                allowed_models=[
                    "carfinance",
                    "notes",
                    "tasks",
                    "activity",
                    "payment",
                    "vendor",
                ],
                other_perms=[
                    "view_car",
                    "view_carlocation",
                    "view_customcard",
                    "view_carcolors",
                    "view_cartransfer",
                    "view_saleorder",
                    "view_leads",
                    "view_opportunity",
                    "view_customers",
                ],
            )
            self.set_permissions(
                app="django_ledger",
                allowed_models=[
                    "bankaccountmodel",
                    "accountmodel",
                    "chartofaccountmodel",
                    "itemmodel",
                    "invoicemodel",
                    "vendormodel",
                    "journalentrymodel",
                    "purchaseordermodel",
                    "estimatemodel",
                    "customermodel",
                    "ledgermodel",
                    "transactionmodel",
                ],
                other_perms=[
                    "view_billmodel",
                    "add_billmodel",
                    "change_billmodel",
                    "delete_billmodel",
                    "view_customermodel",
                    "view_estimatemodel",
                    "can_view_inventory",
                    "can_view_sales",
                    "can_view_crm",
                    "can_view_financials",
                    "can_view_reports",
                ],
            )

    def set_permissions(self, app="inventory", allowed_models=[], other_perms=[]):
        try:
            for perm in Permission.objects.filter(
                content_type__app_label=app, content_type__model__in=allowed_models
            ):
                self.add_permission(perm)
            for perm in other_perms:
                p = Permission.objects.get(codename=perm)
                self.add_permission(p)
        except Exception as e:
            print(e)


class DealerSettings(models.Model):
    dealer = models.OneToOneField(
        Dealer, on_delete=models.CASCADE, related_name="settings", null=True, blank=True
    )
    invoice_cash_account = models.ForeignKey(
        AccountModel,
        related_name="invoice_cash",
        on_delete=models.SET_NULL,
        null=True,
        blank=True,
    )
    invoice_prepaid_account = models.ForeignKey(
        AccountModel,
        related_name="invoice_prepaid",
        on_delete=models.SET_NULL,
        null=True,
        blank=True,
    )
    invoice_unearned_account = models.ForeignKey(
        AccountModel,
        related_name="invoice_unearned",
        on_delete=models.SET_NULL,
        null=True,
        blank=True,
    )

    bill_cash_account = models.ForeignKey(
        AccountModel,
        related_name="bill_cash",
        on_delete=models.SET_NULL,
        null=True,
        blank=True,
    )
    bill_prepaid_account = models.ForeignKey(
        AccountModel,
        related_name="bill_prepaid",
        on_delete=models.SET_NULL,
        null=True,
        blank=True,
    )
    bill_unearned_account = models.ForeignKey(
        AccountModel,
        related_name="bill_unearned",
        on_delete=models.SET_NULL,
        null=True,
        blank=True,
    )
    additional_info = models.JSONField(default=dict, null=True, blank=True)

    def __str__(self):
        return f"Settings for {self.dealer}"


# class customPlan(AbstractPlan):
#     default = models.BooleanField(
#         help_text=_('Both "Unknown" and "No" means that the plan is not default'),
#         default=None,
#         db_index=True,
#         unique=False,
#         null=True,
#       )


class PaymentHistory(models.Model):
    # Payment status choices
    INITIATED = "initiated"
    PENDING = "pending"
    PAID = "paid"
    COMPLETED = "completed"
    FAILED = "failed"
    REFUNDED = "refunded"
    CANCELLED = "cancelled"

    PAYMENT_STATUS_CHOICES = [
        (INITIATED, "initiated"),
        (PENDING, "Pending"),
        (COMPLETED, "Completed"),
        (PAID, "Paid"),
        (FAILED, "Failed"),
        (REFUNDED, "Refunded"),
        (CANCELLED, "Cancelled"),
    ]

    # Payment method choices
    CREDIT_CARD = "credit_card"
    DEBIT_CARD = "debit_card"
    PAYPAL = "paypal"
    BANK_TRANSFER = "bank_transfer"
    CRYPTO = "crypto"
    OTHER = "other"

    PAYMENT_METHOD_CHOICES = [
        (CREDIT_CARD, "Credit Card"),
        (DEBIT_CARD, "Debit Card"),
        (PAYPAL, "PayPal"),
        (BANK_TRANSFER, "Bank Transfer"),
        (CRYPTO, "Cryptocurrency"),
        (OTHER, "Other"),
    ]

    # Basic payment information
    user = models.ForeignKey(
        "auth.User",  # or your custom user model
        on_delete=models.CASCADE,
        null=False,
        blank=False,
        related_name="payments",
    )
    user_data = models.JSONField(null=True, blank=True)
    amount = models.DecimalField(
        max_digits=10, decimal_places=2, validators=[MinValueValidator(0.01)]
    )
    currency = models.CharField(max_length=3, default="SAR")
    payment_date = models.DateTimeField(default=timezone.now)
    status = models.CharField(
        max_length=10, choices=PAYMENT_STATUS_CHOICES, default=PENDING
    )
    payment_method = models.CharField(max_length=20, choices=PAYMENT_METHOD_CHOICES)

    # Transaction references
    transaction_id = models.CharField(
        max_length=100, unique=True, blank=True, null=True
    )
    invoice_number = models.CharField(max_length=50, blank=True, null=True)
    order_reference = models.CharField(max_length=100, blank=True, null=True)

    # Payment processor details
    gateway_response = models.JSONField(
        blank=True, null=True
    )  # Raw response from payment gateway
    gateway_name = models.CharField(max_length=50, blank=True, null=True)

    # Additional metadata
    description = models.TextField(blank=True, null=True)
    is_recurring = models.BooleanField(default=False)
    billing_email = models.EmailField(blank=True, null=True)
    billing_address = models.TextField(blank=True, null=True)

    # Timestamps
    created_at = models.DateTimeField(auto_now_add=True)
    updated_at = models.DateTimeField(auto_now=True)

    class Meta:
        verbose_name = _("Payment History")
        verbose_name_plural = _("Payment Histories")
        ordering = ["-payment_date"]
        indexes = [
            models.Index(fields=["transaction_id"]),
            models.Index(fields=["user"]),
            models.Index(fields=["status"]),
            models.Index(fields=["payment_date"]),
        ]

    def __str__(self):
        return f"Payment #{self.id} - {self.amount} {self.currency} ({self.status})"

    def is_successful(self):
        return self.status == self.COMPLETED


######################################################################################################
######################################################################################################
######################################################################################################
class PoItemsUploaded(models.Model):
    dealer = models.ForeignKey(Dealer, on_delete=models.CASCADE, null=True, blank=True)
    po = models.ForeignKey(
        PurchaseOrderModel,
        on_delete=models.CASCADE,
        null=True,
        blank=True,
        related_name="items",
    )
    item = models.ForeignKey(
        ItemTransactionModel,
        on_delete=models.CASCADE,
        null=True,
        blank=True,
        related_name="po_items",
    )
    status = models.CharField(max_length=100, null=True, blank=True)
    created_at = models.DateTimeField(auto_now_add=True)
    updated_at = models.DateTimeField(auto_now=True)

    class Meta:
        verbose_name = _("PO Items")
        verbose_name_plural = _("PO Items")
        indexes = [
            models.Index(fields=["po"]),
            models.Index(fields=["item"]),
        ]

    def get_name(self):
        return self.item.item.name.split("||")


class ExtraInfo(models.Model):
    """
    Stores additional information for any model with:
    - Multiple generic relationships
    - JSON data storage
    - Tracking fields
    """

    dealer = models.ForeignKey(
        Dealer,
        on_delete=models.SET_NULL,
        null=True,
        blank=True,
        related_name="extra_info",
    )
    content_type = models.ForeignKey(
        ContentType, on_delete=models.CASCADE, related_name="extra_info_primary"
    )
    object_id = models.CharField(max_length=255, null=True, blank=True)
    content_object = GenericForeignKey("content_type", "object_id")

    # Secondary GenericForeignKey (optional additional link)
    related_content_type = models.ForeignKey(
        ContentType,
        on_delete=models.SET_NULL,
        null=True,
        blank=True,
        related_name="extra_info_secondary",
    )
    related_object_id = models.CharField(max_length=255, null=True, blank=True)
    related_object = GenericForeignKey("related_content_type", "related_object_id")

    # JSON Data Storage
    data = models.JSONField(encoder=DjangoJSONEncoder, default=dict, blank=True)

    # Metadata
    created_at = models.DateTimeField(auto_now_add=True)
    updated_at = models.DateTimeField(auto_now=True)
    created_by = models.ForeignKey(
        User, on_delete=models.SET_NULL, null=True, related_name="created_extra_info"
    )

    class Meta:
        indexes = [
            models.Index(fields=["content_type", "object_id"]),
            models.Index(fields=["related_content_type", "related_object_id"]),
        ]
        verbose_name_plural = _("Extra Info")
        verbose_name = _("Extra Info")

    def __str__(self):
        return f"ExtraInfo for {self.content_object} ({self.content_type})"

    @classmethod
    def get_sale_orders(cls, staff=None, is_dealer=False,dealer=None):
        if not staff and not is_dealer:
            return []

        content_type = ContentType.objects.get_for_model(EstimateModel)
        related_content_type = ContentType.objects.get_for_model(Staff)

        if is_dealer:
            qs = cls.objects.filter(
                dealer=dealer,
                content_type=content_type,
                related_content_type=related_content_type,
                related_object_id__isnull=False,
            ).union(cls.objects.filter(
                dealer=dealer,
                content_type=ContentType.objects.get_for_model(EstimateModel),
                related_content_type=ContentType.objects.get_for_model(User),
            ))
        else:
            qs = cls.objects.filter(
                dealer=dealer,
                content_type=content_type,
                related_content_type=related_content_type,
                related_object_id=staff.pk,
            )
        # qs = qs.select_related("customer","estimate","invoice")
        data = SaleOrder.objects.filter(pk__in=[x.content_object.sale_orders.select_related("customer","estimate","invoice").first().pk for x in qs if x.content_object.sale_orders.first()])

        return data

        # return [
        #     x.content_object.sale_orders.select_related(
        #         "customer", "estimate", "invoice"
        #     ).first()
        #     for x in qs
        #     if x.content_object.sale_orders.first()
        # ]

    @classmethod
    def get_invoices(cls, staff=None, is_dealer=False,dealer=None):
        if not staff and not is_dealer:
            return []

        content_type = ContentType.objects.get_for_model(EstimateModel)
        related_content_type = ContentType.objects.get_for_model(Staff)

        if is_dealer:
            qs = cls.objects.filter(
                dealer=dealer,
                content_type=content_type,
                related_content_type=related_content_type,
                related_object_id__isnull=False,
            ).union(cls.objects.filter(
                dealer=dealer,
                content_type=content_type,
                related_content_type=ContentType.objects.get_for_model(User),
            ))
        else:
            qs = cls.objects.filter(
                dealer=dealer,
                content_type=content_type,
                related_content_type=related_content_type,
                related_object_id=staff.pk,
            )
        return [
            x.content_object.invoicemodel_set.first()
            for x in qs
            if x.content_object.invoicemodel_set.first()
        ]


class Recall(models.Model):
    title = models.CharField(max_length=200, verbose_name=_("Recall Title"))
    description = models.TextField(verbose_name=_("Description"))
    make = models.ForeignKey(
        CarMake,
        models.DO_NOTHING,
        verbose_name=_("Make"),
        null=True,
        blank=True
    )
    model = models.ForeignKey(
        CarModel,
        models.DO_NOTHING,
        verbose_name=_("Model"),
        null=True,
        blank=True
    )
    serie = models.ForeignKey(
        CarSerie,
        models.DO_NOTHING,
        verbose_name=_("Series"),
        null=True,
        blank=True
    )
    trim = models.ForeignKey(
        CarTrim,
        models.DO_NOTHING,
        verbose_name=_("Trim"),
        null=True,
        blank=True
    )
    year_from = models.IntegerField(verbose_name=_("From Year"), null=True, blank=True)
    year_to = models.IntegerField(verbose_name=_("To Year"), null=True, blank=True)
    created_at = models.DateTimeField(auto_now_add=True, verbose_name=_("Created At"))
    created_by = models.ForeignKey(
        settings.AUTH_USER_MODEL,
        on_delete=models.SET_NULL,
        null=True,
        blank=True,
        verbose_name=_("Created By")
    )

    class Meta:
        verbose_name = _("Recall")
        verbose_name_plural = _("Recalls")

    def __str__(self):
        return self.title

class RecallNotification(models.Model):
    recall = models.ForeignKey(Recall, on_delete=models.CASCADE, related_name='notifications')
    dealer = models.ForeignKey("Dealer", on_delete=models.CASCADE, related_name='recall_notifications')
    sent_at = models.DateTimeField(auto_now_add=True)
    cars_affected = models.ManyToManyField(Car, related_name='recall_notifications')

    class Meta:
        verbose_name = _("Recall Notification")
        verbose_name_plural = _("Recall Notifications")

    def __str__(self):
        return f"Notification for {self.dealer} about {self.recall}"