From 9d3b9739fa6e04e8b16948223f8956359fdd68d6 Mon Sep 17 00:00:00 2001
From: Flatlogic Bot <support@flatlogic.com>
Date: Fri, 6 Feb 2026 15:27:01 +0000
Subject: [PATCH] Autosave: 20260206-152701

---
 core/__pycache__/models.cpython-311.pyc | Bin 45582 -> 45732 bytes
 core/__pycache__/views.cpython-311.pyc  | Bin 157098 -> 152678 bytes
 core/models.py                          |   3 +
 core/templates/core/settings.html       |   8 ++
 core/views.py                           | 178 +++---------------------
 5 files changed, 29 insertions(+), 160 deletions(-)

diff --git a/core/__pycache__/models.cpython-311.pyc b/core/__pycache__/models.cpython-311.pyc
index cab57bd7151e2415f109c11ca0778b0e0887ad97..3b99c6564408fb96ec807f16e92cdfd526ffacad 100644
GIT binary patch
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diff --git a/core/__pycache__/views.cpython-311.pyc b/core/__pycache__/views.cpython-311.pyc
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GIT binary patch
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diff --git a/core/models.py b/core/models.py
index be90b4d..eac88e7 100644
--- a/core/models.py
+++ b/core/models.py
@@ -396,6 +396,9 @@ class SystemSetting(models.Model):
     vat_number = models.CharField(_("VAT Number"), max_length=50, blank=True)
     registration_number = models.CharField(_("Registration Number"), max_length=50, blank=True)
     
+    # Financial Settings
+    allow_zero_stock_sales = models.BooleanField(_("Allow selling items with 0 stock"), default=False)
+    
     # Loyalty Settings
     loyalty_enabled = models.BooleanField(_("Enable Loyalty System"), default=False)
     points_per_currency = models.DecimalField(_("Points Earned per Currency Unit"), max_digits=10, decimal_places=2, default=1.0)
diff --git a/core/templates/core/settings.html b/core/templates/core/settings.html
index 5c16a86..19810d1 100644
--- a/core/templates/core/settings.html
+++ b/core/templates/core/settings.html
@@ -120,6 +120,14 @@
                                         <div class="form-text">{% trans "For price display" %}</div>
                                     </div>
                                     
+                                    <div class="col-md-12 mt-3">
+                                        <div class="form-check form-switch">
+                                            <input class="form-check-input" type="checkbox" name="allow_zero_stock_sales" {% if settings.allow_zero_stock_sales %}checked{% endif %}>
+                                            <label class="form-check-label fw-bold">{% trans "Allow selling items with 0 stock" %}</label>
+                                            <div class="form-text">{% trans "If enabled, sales can be processed even if product stock is 0 or less." %}</div>
+                                        </div>
+                                    </div>
+                                    
                                     <hr class="my-4">
                                     <h5 class="fw-bold mb-3">{% trans "Loyalty Configuration" %}</h5>
                                     <div class="col-md-6">
diff --git a/core/views.py b/core/views.py
index fdaf73a..85890aa 100644
--- a/core/views.py
+++ b/core/views.py
@@ -467,166 +467,15 @@ def create_sale_api(request):
             if not settings:
                 settings = SystemSetting.objects.create()
 
-            loyalty_discount = 0
-            if settings.loyalty_enabled and customer and points_to_redeem > 0:
-                if customer.loyalty_points >= points_to_redeem:
-                    loyalty_discount = float(points_to_redeem) * float(settings.currency_per_point)
-
-            sale = Sale.objects.create(
-                customer=customer,
-                invoice_number=invoice_number,
-                subtotal=subtotal,
-                vat_amount=vat_amount,
-                total_amount=total_amount,
-                paid_amount=paid_amount,
-                balance_due=float(total_amount) - float(paid_amount),
-                discount=discount,
-                loyalty_points_redeemed=points_to_redeem,
-                loyalty_discount_amount=loyalty_discount,
-                payment_type=payment_type,
-                due_date=due_date if due_date else None,
-                notes=notes,
-                created_by=request.user
-            )
-
-            # Set status based on payments
-            if float(paid_amount) >= float(total_amount):
-                sale.status = 'paid'
-            elif float(paid_amount) > 0:
-                sale.status = 'partial'
-            else:
-                sale.status = 'unpaid'
-            sale.save()
-
-            # Record initial payment if any
-            if float(paid_amount) > 0:
-                pm = None
-                if payment_method_id:
-                    pm = PaymentMethod.objects.filter(id=payment_method_id).first()
-                
-                SalePayment.objects.create(
-                    sale=sale,
-                    amount=paid_amount,
-                    payment_method=pm,
-                    payment_method_name=pm.name_en if pm else payment_type.capitalize(),
-                    notes="Initial payment",
-                    created_by=request.user
-                )
-
-            for item in items:
-                product = Product.objects.get(id=item['id'])
-                SaleItem.objects.create(
-                    sale=sale,
-                    product=product,
-                    quantity=item['quantity'],
-                    unit_price=item['price'],
-                    line_total=item['line_total']
-                )
-                product.stock_quantity -= int(item['quantity'])
-                product.save()
-
-            # Handle Loyalty Points
-            if settings.loyalty_enabled and customer:
-                # Earn Points
-                points_earned = float(total_amount) * float(settings.points_per_currency)
-                if customer.loyalty_tier:
-                    points_earned *= float(customer.loyalty_tier.point_multiplier)
-                
-                if points_earned > 0:
-                    customer.loyalty_points += decimal.Decimal(str(points_earned))
-                    LoyaltyTransaction.objects.create(
-                        customer=customer,
-                        sale=sale,
-                        transaction_type='earned',
-                        points=points_earned,
-                        notes=f"Points earned from Sale #{sale.id}"
-                    )
-                
-                # Redeem Points
-                if points_to_redeem > 0:
-                    customer.loyalty_points -= decimal.Decimal(str(points_to_redeem))
-                    LoyaltyTransaction.objects.create(
-                        customer=customer,
-                        sale=sale,
-                        transaction_type='redeemed',
-                        points=-points_to_redeem,
-                        notes=f"Points redeemed for Sale #{sale.id}"
-                    )
-                
-                customer.update_tier()
-                customer.save()
-
-            return JsonResponse({
-                'success': True, 
-                'sale_id': sale.id,
-                'business': {
-                    'name': settings.business_name,
-                    'address': settings.address,
-                    'phone': settings.phone,
-                    'email': settings.email,
-                    'currency': settings.currency_symbol,
-                    'vat_number': settings.vat_number,
-                    'registration_number': settings.registration_number,
-                    'logo_url': settings.logo.url if settings.logo else None
-                },
-                'sale': {
-                    'id': sale.id,
-                    'invoice_number': sale.invoice_number,
-                    'created_at': sale.created_at.strftime("%Y-%m-%d %H:%M"),
-                    'subtotal': float(sale.subtotal),
-                    'vat_amount': float(sale.vat_amount),
-                    'total': float(sale.total_amount),
-                    'discount': float(sale.discount),
-                    'paid': float(sale.paid_amount),
-                    'balance': float(sale.balance_due),
-                    'customer_name': sale.customer.name if sale.customer else 'Guest',
-                    'items': [
-                        {
-                            'name_en': si.product.name_en,
-                            'name_ar': si.product.name_ar,
-                            'qty': si.quantity,
-                            'price': float(si.unit_price),
-                            'total': float(si.line_total)
-                        } for si in sale.items.all()
-                    ]
-                }
-            })
-        except Exception as e:
-            return JsonResponse({'success': False, 'error': str(e)}, status=400)
-def create_sale_api(request):
-    if request.method == 'POST':
-        try:
-            data = json.loads(request.body)
-            customer_id = data.get('customer_id')
-            invoice_number = data.get('invoice_number', '')
-            items = data.get('items', [])
-            
-            # Retrieve amounts
-            subtotal = data.get('subtotal', 0)
-            vat_amount = data.get('vat_amount', 0)
-            total_amount = data.get('total_amount', 0)
-            
-            paid_amount = data.get('paid_amount', 0)
-            discount = data.get('discount', 0)
-            payment_type = data.get('payment_type', 'cash')
-            payment_method_id = data.get('payment_method_id')
-            due_date = data.get('due_date')
-            notes = data.get('notes', '')
-            
-            # Loyalty data
-            points_to_redeem = data.get('loyalty_points_redeemed', 0)
-
-            customer = None
-            if customer_id:
-                customer = Customer.objects.get(id=customer_id)
-
-            if not customer and payment_type != 'cash':
-                return JsonResponse({'success': False, 'error': _('Credit or Partial payments are not allowed for Guest customers.')}, status=400)
-
-            settings = SystemSetting.objects.first()
-            if not settings:
-                settings = SystemSetting.objects.create()
-
+            # Check for stock availability if overselling is not allowed
+            if not settings.allow_zero_stock_sales:
+                for item in items:
+                    try:
+                        product = Product.objects.get(id=item["id"])
+                        if product.stock_quantity < float(item["quantity"]):
+                             return JsonResponse({"success": False, "error": _("Insufficient stock for product: ") + product.name_en}, status=400)
+                    except Product.DoesNotExist:
+                        pass
             loyalty_discount = 0
             if settings.loyalty_enabled and customer and points_to_redeem > 0:
                 if customer.loyalty_points >= points_to_redeem:
@@ -909,6 +758,14 @@ def convert_quotation_to_invoice(request, pk):
     if quotation.status == 'converted':
         messages.warning(request, _("This quotation has already been converted to an invoice."))
         return redirect('invoices')
+
+    # Check stock before converting
+    settings = SystemSetting.objects.first() or SystemSetting.objects.create()
+    if not settings.allow_zero_stock_sales:
+        for item in quotation.items.all():
+            if item.product.stock_quantity < item.quantity:
+                messages.error(request, _("Insufficient stock for product: ") + item.product.name_en)
+                return redirect('quotation_detail', pk=pk)
     
     # Create Sale from Quotation
     sale = Sale.objects.create(
@@ -1173,6 +1030,7 @@ def settings_view(request):
             settings.decimal_places = request.POST.get("decimal_places", 3)
             settings.vat_number = request.POST.get("vat_number", "")
             settings.registration_number = request.POST.get("registration_number", "")
+            settings.allow_zero_stock_sales = request.POST.get("allow_zero_stock_sales") == "on"
             
             settings.loyalty_enabled = request.POST.get("loyalty_enabled") == "on"
             settings.points_per_currency = request.POST.get("points_per_currency", 1.0)