from random import randint from django.db.models.signals import post_save, post_delete, pre_delete, pre_save from django.dispatch import receiver from django.utils import timezone from django_ledger.models import EntityModel from django.utils.translation import gettext_lazy as _ from django.contrib.auth import get_user_model from django_ledger.io import roles from django_ledger.models import EntityModel,AccountModel,ItemModel,ItemModelAbstract,UnitOfMeasureModel from . import models User = get_user_model() # @receiver(post_save, sender=models.SaleQuotation) # def link_quotation_to_entity(sender, instance, created, **kwargs): # if created: # # Get the corresponding Django Ledger entity for the dealer # entity = EntityModel.objects.get(name=instance.dealer.get_root_dealer.name) # instance.entity = entity # instance.save() # @receiver(pre_delete, sender=models.Dealer) # def remove_user_account(sender, instance, **kwargs): # user = instance.user # if user: # user.delete() @receiver(post_save, sender=User) def create_dealer(instance, created, *args, **kwargs): if created: models.Dealer.objects.create(user=instance,name=instance.username,email=instance.email) @receiver(post_save, sender=models.Dealer) def create_user_account(sender, instance, created, **kwargs): if created: if instance.dealer_type != "Owner": user = User.objects.create_user( username=instance.name, email=instance.email, ) user.set_password("Tenhal@123") user.save() instance.user = user instance.save() @receiver(post_save, sender=models.Car) def create_car_location(sender, instance, created, **kwargs): """ Signal to create or update the car's location when a car instance is saved. """ try: if created: if instance.dealer is None: raise ValueError(f"Cannot create CarLocation for car {instance.vin}: dealer is missing.") models.CarLocation.objects.create( car=instance, owner=instance.dealer, showroom=instance.dealer, description=f"Initial location set for car {instance.vin}." ) print("Car Location created") except Exception as e: print(f"Failed to create CarLocation for car {instance.vin}: {e}") @receiver(post_save, sender=models.CarReservation) def update_car_status_on_reservation(sender, instance, created, **kwargs): if created: car = instance.car car.status = models.CarStatusChoices.RESERVED car.save() @receiver(post_delete, sender=models.CarReservation) def update_car_status_on_reservation_delete(sender, instance, **kwargs): car = instance.car if not car.is_reserved(): car.status = models.CarStatusChoices.AVAILABLE car.save() # Create Entity @receiver(post_save, sender=models.Dealer) def create_ledger_entity(sender, instance, created, **kwargs): if created: root_dealer = instance.get_root_dealer if not root_dealer.entity: entity_name = f"{root_dealer.name}-{root_dealer.joined_at.date()}" entity = EntityModel.create_entity( name=entity_name, admin=root_dealer.user, use_accrual_method=False, fy_start_month=1, ) if entity: instance.entity = entity instance.save() coa = entity.create_chart_of_accounts( assign_as_default=True, commit=True, coa_name=_(f"{entity_name}-COA") ) if coa: # entity.populate_default_coa(activate_accounts=True, coa_model=coa) print(f"Ledger entity created for Dealer: {instance.name}") # Create Cash Account entity.create_account( coa_model=coa, code="1010", role=roles.ASSET_CA_CASH, name=_("Cash"), balance_type="debit", active=True, ) # Create Accounts Receivable Account entity.create_account( coa_model=coa, code="1020", role=roles.ASSET_CA_RECEIVABLES, name=_("Accounts Receivable"), balance_type="debit", active=True, ) # Create Inventory Account entity.create_account( coa_model=coa, code="1030", role=roles.ASSET_CA_INVENTORY, name=_("Inventory"), balance_type="debit", active=True, ) # Create Accounts Payable Account entity.create_account( coa_model=coa, code="2010", role=roles.LIABILITY_CL_ACC_PAYABLE, name=_("Accounts Payable"), balance_type="credit", active=True, ) # Create Sales Revenue Account entity.create_account( coa_model=coa, code="4010", role=roles.INCOME_OPERATIONAL, name=_("Sales Revenue"), balance_type="credit", active=True, ) # Create Cost of Goods Sold Account entity.create_account( coa_model=coa, code="5010", role=roles.COGS, name=_("Cost of Goods Sold"), balance_type="debit", active=True, ) # Create Rent Expense Account entity.create_account( coa_model=coa, code="6010", role=roles.EXPENSE_OPERATIONAL, name=_("Rent Expense"), balance_type="debit", active=True, ) # Create Utilities Expense Account entity.create_account( coa_model=coa, code="6020", role=roles.EXPENSE_OPERATIONAL, name=_("Utilities Expense"), balance_type="debit", active=True, ) # uom_name = _("Unit") # unit_abbr = _("U") # # entity.create_uom(uom_name, unit_abbr) # Create Vendor @receiver(post_save, sender=models.Vendor) def create_ledger_vendor(sender, instance, created, **kwargs): if created: entity = EntityModel.objects.filter(name=instance.dealer.name).first() entity.create_vendor( name=instance.name, vendor_number=instance.crn, address_1=instance.address, phone=instance.phone_number, tax_id_number=instance.vrn, active=True, hidden=False, additional_info={ "arabic_name": instance.arabic_name, "contact_person": instance.contact_person, }) print(f"VendorModel created for Vendor: {instance.name}") @receiver(post_save, sender=models.Customer) def create_customer(sender, instance, created, **kwargs): if created: dealer = instance.dealer.get_root_dealer entity = dealer.entity name = f"{instance.first_name} {instance.middle_name} {instance.last_name}" if entity: entity.create_customer( customer_model_kwargs={ "customer_name": name, "address_1": instance.address, "phone": instance.phone_number, "email": instance.email, "sales_tax_rate": 0.15, "active": True, "hidden": False, "additional_info": {}, } ) print(f"Customer created: {name}") # Create Item @receiver(post_save, sender=models.Car) def create_item_model(sender, instance, created, **kwargs): item_name = f"{instance.year} - {instance.id_car_make} - {instance.id_car_model} - {instance.id_car_trim}" dealer = instance.dealer entity = dealer.entity if not entity: return uom_name = _("Car") unit_abbr = _("C") uom = entity.get_uom_all().filter(name=uom_name, unit_abbr=unit_abbr).first() if not uom: uom = entity.create_uom( name=uom_name, unit_abbr=unit_abbr ) entity.create_item_product( name=item_name, uom_model=uom, item_type=ItemModel.ITEM_TYPE_MATERIAL) print(f"ItemModel for Car:") # # # update price - CarFinance # @receiver(post_save, sender=CarFinance) # def update_item_model_cost(sender, instance, created, **kwargs): # # ItemModel.objects.filter(item_id=instance.car.vin).update( # inventory_received_value=instance.cost_price, # default_amount=instance.cost_price, # ) # print(f"Inventory item updated with CarFinance data for Car: {instance.car}") # @receiver(pre_save, sender=models.SaleQuotation) # def update_quotation_status(sender, instance, **kwargs): # if instance.valid_until and timezone.now() > instance.valid_until: # instance.status = 'expired' # # instance.total_price = instance.calculate_total_price() # # # @receiver(post_save, sender=models.Payment) # def update_status_on_payment(sender, instance, created, **kwargs): # if created: # quotation = instance.sale_quotation # total_payments = sum(payment.amount for payment in quotation.payments.all()) # if total_payments >= quotation.amount: # quotation.status = 'completed' # # SalesInvoice.objects.create(sales_order=order) # elif total_payments > 0: # quotation.status = 'partially_paid' # else: # quotation.status = 'pending' # quotation.save()