[Feature] Import LineItems from from CSV and products

app/Http/Controllers/LineItemController.php

@@ -57,10 +57,9 @@ public function index($invoiceId)
      * ;"Hosting";"Annual hosting";1.500,50;"lump sum";1.200,00
      *
      * @param Request $request The HTTP request with the CSV file
-     * @param int $invoiceId The ID of the invoice for which the items will be imported
      * @return \Illuminate\Http\JsonResponse A JSON response with the imported items or an error message
      */
-    public function importFromCsv(Request $request, $invoiceId)
+    public function importFromCsv(Request $request)
     {
         $request->validate([
             'csv' => 'required|file|mimes:csv,txt'
@@ -133,16 +132,22 @@ public function importFromCsv(Request $request, $invoiceId)
             }
 
             $lineItems[] = [
-                'invoice_id' => $invoiceId,
+                'id' => 0,
+                'invoice_id' => 0,
                 'position' => $position,
                 'is_section' => false,
                 'title' => $itemData['title'],
                 'description' => $itemData['description'] ?? '',
                 'quantity' => (float)$quantity,
                 'unit_id' => $unit->id,
+                'unit' => [
+                    'id' => $unit->id,
+                    'name' => $unit->name,
+                    'symbol' => $unit->symbol,
+                    'created_at' => $unit->created_at,
+                    'updated_at' => $unit->updated_at,
+                ],
                 'price' => (float)$price,
-                'created_at' => now(),
-                'updated_at' => now()
             ];
         }
 
@@ -150,28 +155,9 @@ public function importFromCsv(Request $request, $invoiceId)
             return response()->json(['message' => 'No valid items found in the CSV file'], 400);
         }
 
-        // Delete existing items for this invoice
-        LineItem::where('invoice_id', $invoiceId)->delete();
-
-        // Insert new items
-        LineItem::insert($lineItems);
-
-        // Return the newly created items
-        $items = LineItem::with('unit')
-            ->where('invoice_id', $invoiceId)
-            ->orderBy('position', 'asc')
-            ->get();
-
-        return $items->map(function ($item) {
-            $itemArray = $item->toArray();
-
-            if ($item->unit) {
-                $itemArray['unit_name'] = $item->unit->name;
-                $itemArray['unit_symbol'] = $item->unit->symbol;
-            }
-
-            return ApiDataTransformer::snakeToCamel($itemArray);
-        });
+        return response()->json(
+            ApiDataTransformer::snakeToCamel($lineItems)
+        );
     }
 
     /**