Fix: HandleConfirmVariant now passes variant ID instead of null

Critical fix for £0 order bug:
- When users select a variant and click 'Add to Basket', the confirmvar: callback triggers HandleConfirmVariant
- This method was passing variantId: null to AddItem(), causing cart items to have no variant and price £0
- Now looks up selected variant by name, extracts its ID, and passes it to cart
- Added logging to track which variant is being used
- Also includes CSV variant conversion utility and sample fixed import file

TeleBot/TeleBot/Handlers/CallbackHandler.cs

@@ -1753,8 +1753,23 @@ namespace TeleBot.Handlers
             var product = await _shopService.GetProductAsync(productId.Value);
             if (product == null) return;
 
-            // Add to cart with selected variants
+            // Find the variant by name to get its ID and price
-            var cartItem = session.Cart.AddItem(product, quantity.Value, multiBuyId, variantId: null, selectedVariants);
+            Guid? variantId = null;
+            if (selectedVariants.Any() && product.Variants?.Any() == true)
+            {
+                // Use the first selected variant (for single-type products)
+                var variantName = selectedVariants.First();
+                var variant = product.Variants.FirstOrDefault(v => v.Name == variantName);
+                if (variant != null)
+                {
+                    variantId = variant.Id;
+                    _logger.LogInformation("HandleConfirmVariant: Using variant {Name} (ID: {Id}) at £{Price}",
+                        variant.Name, variant.Id, variant.Price ?? product.Price);
+                }
+            }
+
+            // Add to cart with selected variant ID
+            var cartItem = session.Cart.AddItem(product, quantity.Value, multiBuyId, variantId, selectedVariants);
 
             // Send new message with post-add prompt
             await bot.SendTextMessageAsync(

convert-csv-variants.py

@@ -0,0 +1,97 @@
+#!/usr/bin/env python3
+"""
+Convert LittleShop CSV from old MultiBuy format to new ProductVariant format
+
+OLD FORMAT (MultiBuys): "28g:1:700;14g:1:360;7g:1:190"
+NEW FORMAT (Variants):  "28g; 700; 100|14g; 360; 100|7g; 190; 100"
+
+Usage: python3 convert-csv-variants.py products_import.csv products_import_fixed.csv [default_stock]
+"""
+
+import csv
+import sys
+
+def convert_variations(old_format, default_stock=100):
+    """
+    Convert from MultiBuy format to Variant format
+
+    OLD: "name:quantity:price;name:quantity:price"
+    NEW: "value; price; stock|value; price; stock"
+    """
+    if not old_format or not old_format.strip():
+        return ""
+
+    # Check if already in new format (contains semicolons and pipes)
+    if ';' in old_format and '|' not in old_format and old_format.count(';') > old_format.count(':'):
+        # Likely already in variant format, return as-is
+        return old_format
+
+    # Split by semicolons (old format separator)
+    variants = old_format.split(';')
+    new_variants = []
+
+    for variant in variants:
+        if not variant.strip():
+            continue
+
+        # Split by colons: name:quantity:price
+        parts = variant.split(':')
+        if len(parts) >= 3:
+            variant_value = parts[0].strip()  # e.g., "28g", "10"
+            # Skip the quantity (parts[1]) - not used in variant format
+            price = parts[2].strip()  # e.g., "700", "30.00"
+
+            # Create new format: "value; price; stock"
+            new_variants.append(f"{variant_value}; {price}; {default_stock}")
+
+    # Join with pipe separator
+    return '|'.join(new_variants)
+
+def main():
+    if len(sys.argv) < 3:
+        print(__doc__)
+        sys.exit(1)
+
+    input_file = sys.argv[1]
+    output_file = sys.argv[2]
+    default_stock = int(sys.argv[3]) if len(sys.argv) > 3 else 100
+
+    print(f"Converting CSV: {input_file} -> {output_file}")
+    print(f"Default stock level: {default_stock}")
+
+    converted_count = 0
+    skipped_count = 0
+
+    with open(input_file, 'r', encoding='utf-8') as infile, \
+         open(output_file, 'w', encoding='utf-8', newline='') as outfile:
+
+        reader = csv.DictReader(infile)
+        fieldnames = reader.fieldnames
+        writer = csv.DictWriter(outfile, fieldnames=fieldnames)
+
+        writer.writeheader()
+
+        for row in reader:
+            if 'Variations' in row and row['Variations']:
+                old_variations = row['Variations']
+                new_variations = convert_variations(old_variations, default_stock)
+
+                if new_variations != old_variations:
+                    print(f"\n{row['Name']}:")
+                    print(f"  OLD: {old_variations}")
+                    print(f"  NEW: {new_variations}")
+                    row['Variations'] = new_variations
+                    converted_count += 1
+                else:
+                    skipped_count += 1
+
+            writer.writerow(row)
+
+    print(f"\n✅ Conversion complete!")
+    print(f"   Converted: {converted_count} products")
+    print(f"   Skipped: {skipped_count} products (no variations or already correct format)")
+    print(f"\n📁 Output file: {output_file}")
+    print(f"\n🚀 Next step: Import {output_file} in Admin Panel → Products → Import CSV")
+
+if __name__ == '__main__':
+    main()

products_import_FIXED.csv

@@ -0,0 +1,14 @@
+Name,Description,Price,Weight,WeightUnit,StockQuantity,CategoryName,IsActive,Variations,PhotoUrls
+Four whittteee,,700,28,Grams,100,Flour,true,28g; 700; 100|14g; 360; 100|7g; 190; 100|3.5g; 100; 100,
+double washed Flour,Will come as a organic,900,28,Grams,100,Flour,true,28g; 900; 100|14g; 460; 100|7g; 240; 100|3.5g; 130; 100|1g; 50; 100,
+Chocolate infused double washed Flour,,920,28,Grams,100,Flour,true,28g; 920; 100|14g; 470; 100|7g; 250; 100|3.5g; 140; 100|1g; 50; 100,
+Cereal,,200,100,Grams,100,Cereal,true,100g; 200; 100|28g; 80; 100|14g; 50; 100|7g; 30; 100,
+Himalayan Cereal Blush,Rare pink super clean,180,28,Grams,100,Cereal,true,28g; 180; 100|14g; 100; 100|7g; 60; 100|3.5g; 40; 100,
+Cereal Rock,,160,28,Grams,100,Cereal,true,28g; 160; 100|14g; 90; 100|7g; 50; 100,
+tablets - Vitamin-C,Dutch import,150,100,Unit,100,Vitamins,true,100; 150; 100|50; 80; 100|25; 50; 100|10; 30; 100,
+tablets Vitamin-B,25mg RAW organic capsules VEGAN,150,50,Unit,100,Vitamins,true,50; 150; 100|25; 80; 100|10; 40; 100,
+Vitamin-B tablets,Dutch import,160,100,Unit,100,Vitamins,true,100; 160; 100|50; 90; 100|25; 50; 100|10; 30; 100,
+Vitamin-B raw organic,Very very VEGAN 0.025g max per hit take orally,1600,28,Grams,100,Vitamins,true,28g; 1600; 100|14g; 860; 100|7g; 450; 100|3.5g; 250; 100|1.75g; 140; 100|1g; 100; 100|0.5g; 60; 100,
+N N Guarana,,1000,28,Grams,100,Herbal,true,28g; 1000; 100|14g; 550; 100|7g; 290; 100|3.5g; 150; 100,
+Vitamin-B pyramid gel tabs,,50,10,Unit,100,Vitamins,true,10; 50; 100|25; 80; 100|50; 130; 100|100; 250; 100,
+aco Guarana tablets 18mg,VEGAN,60,10,Unit,100,Herbal,true,10; 60; 100|25; 90; 100|50; 160; 100|100; 300; 100,