Update app.py

app.py

@@ -941,7 +941,7 @@ CATALOG_TEMPLATE = '''
                             <div class="product-price-container">
                                 {% set discount = product.get('discount_percent', 0) %}
                                 {% set original_price_kgs = product.price_kgs %}
-                                {% if app_config.prices_enabled %}
+                                {% if app_config.prices_enabled and original_price_kgs > 0 %}
                                     {% if discount > 0 %}
                                         {% set discounted_price_kgs = original_price_kgs * (100 - discount) / 100 %}
                                         <span class="original-price">{{ "%.2f"|format(original_price_kgs) }} {{ currency_code }}</span><br>
@@ -1540,7 +1540,7 @@ PRODUCT_DETAIL_TEMPLATE = '''
             
             {% set discount = product_info.get('discount_percent', 0) %}
             {% set original_price_kgs = product_info.price_kgs %}
-            {% if app_config.prices_enabled %}
+            {% if app_config.prices_enabled and original_price_kgs > 0 %}
                 <div style="margin: 20px 0; padding: 15px; background: var(--bg-steel-mid); border-radius: 8px;">
                     <strong style="font-size: 1.1rem; color: var(--text-light);">{{ get_translation('price') }}</strong>
                     {% if discount > 0 %}
@@ -2677,17 +2677,20 @@ def admin_api():
                 return jsonify({'error': get_translation('flash_product_name_price_required')}), 400
 
             price_kgs_str = request.form.get('price_kgs', '').replace(',', '.')
-            try:
-                price_kgs = round(float(price_kgs_str), 2)
-                if price_kgs < 0: price_kgs = 0.0
-            except (ValueError, TypeError):
-                 price_kgs = 0.0
+            if not price_kgs_str:
+                price_kgs = 0.0
+            else:
+                try:
+                    price_kgs = round(float(price_kgs_str), 2)
+                    if price_kgs < 0: price_kgs = 0.0
+                except ValueError:
+                     return jsonify({'error': get_translation('flash_invalid_price_format')}), 400
             
             discount_percent_str = request.form.get('discount_percent', '0')
             try:
                 discount_percent = int(discount_percent_str)
                 if not (0 <= discount_percent <= 100): discount_percent = 0
-            except ValueError:
+            except (ValueError, TypeError):
                 discount_percent = 0
             
             description = request.form.get('description', '').strip()
@@ -2766,19 +2769,24 @@ def admin_api():
 
             product_to_edit['name'] = request.form.get('name', product_to_edit['name']).strip()
             
-            price_kgs_str = request.form.get('price_kgs', str(product_to_edit.get('price_kgs',0.0))).replace(',', '.')
-            try:
-                price_kgs = round(float(price_kgs_str), 2)
-                if price_kgs < 0: price_kgs = 0.0
-                product_to_edit['price_kgs'] = price_kgs
-            except (ValueError, TypeError): pass
+            price_kgs_str = request.form.get('price_kgs', '').replace(',', '.')
+            if not price_kgs_str:
+                product_to_edit['price_kgs'] = 0.0
+            else:
+                try:
+                    price_kgs = round(float(price_kgs_str), 2)
+                    if price_kgs < 0: price_kgs = 0.0
+                    product_to_edit['price_kgs'] = price_kgs
+                except ValueError: 
+                    pass 
 
             discount_percent_str = request.form.get('discount_percent', str(product_to_edit.get('discount_percent',0)))
             try:
                 discount_percent = int(discount_percent_str)
                 if not (0 <= discount_percent <= 100): discount_percent = product_to_edit.get('discount_percent', 0)
                 product_to_edit['discount_percent'] = discount_percent
-            except ValueError: pass
+            except (ValueError, TypeError):
+                pass
 
             product_to_edit['description'] = request.form.get('description', product_to_edit.get('description', '')).strip()
             product_to_edit['subcategory_id'] = request.form.get('subcategory_id') or None