Improve the frontend and repository layer

services/inventory/scripts/demo/seed_demo_stock.py

@@ -126,6 +126,27 @@ async def create_stock_batches_for_ingredient(
     stocks = []
     num_batches = random.randint(1, 2)  # Reduced from 3-5 for faster demo loading
 
+    # Calculate target total stock for this ingredient
+    # Use 40-80% of max_stock_level to allow for realistic variation
+    # If max_stock_level is not set, use reorder_point * 3 as a reasonable target
+    if ingredient.max_stock_level:
+        target_total_stock = float(ingredient.max_stock_level) * random.uniform(0.4, 0.8)
+    else:
+        target_total_stock = float(ingredient.reorder_point or 50.0) * 3.0
+
+    # Distribute total stock across batches
+    batch_quantities = []
+    remaining = target_total_stock
+    for i in range(num_batches):
+        if i == num_batches - 1:
+            # Last batch gets whatever is remaining
+            batch_quantities.append(remaining)
+        else:
+            # Earlier batches get a random portion of remaining
+            portion = remaining * random.uniform(0.3, 0.7)
+            batch_quantities.append(portion)
+            remaining -= portion
+
     for i in range(num_batches):
         # Calculate expiration days offset
         days_offset = calculate_expiration_distribution()
@@ -146,17 +167,11 @@ async def create_stock_batches_for_ingredient(
             quality_status = "good"
             is_available = True
 
-        # Generate quantities
-        if ingredient.unit_of_measure.value in ['kg', 'l']:
-            current_quantity = round(random.uniform(5.0, 50.0), 2)
-            reserved_quantity = round(random.uniform(0.0, current_quantity * 0.3), 2) if is_available else 0.0
-        elif ingredient.unit_of_measure.value in ['g', 'ml']:
-            current_quantity = round(random.uniform(500.0, 5000.0), 2)
-            reserved_quantity = round(random.uniform(0.0, current_quantity * 0.3), 2) if is_available else 0.0
-        else:  # units, pieces, etc.
-            current_quantity = float(random.randint(10, 200))
-            reserved_quantity = float(random.randint(0, int(current_quantity * 0.3))) if is_available else 0.0
+        # Use pre-calculated batch quantity
+        current_quantity = round(batch_quantities[i], 2)
 
+        # Reserve 0-30% of current quantity if available
+        reserved_quantity = round(random.uniform(0.0, current_quantity * 0.3), 2) if is_available else 0.0
         available_quantity = current_quantity - reserved_quantity
 
         # Calculate costs with variation