Additional Changes

Modules/MaterialLogistics/app/Http/Controllers/MaterialController.php

@@ -12,6 +12,7 @@ use Modules\MaterialLogistics\Models\InventoryBatch;
 use Modules\MaterialLogistics\Models\ProjectInventory;
 use Modules\MaterialLogistics\Models\Warehouse;
 use Modules\MaterialLogistics\Models\WarehouseStock;
+use Modules\MaterialLogistics\Models\PurchaseOrder;
 use Modules\MaterialLogistics\Services\WarehouseService;
 use Modules\ProjectManagement\Models\Project;
 use Modules\ProjectManagement\Models\Task;
@@ -154,12 +155,45 @@ class MaterialController extends Controller
         ]);
     }
 
+    // --- Fetch materials filtered by operation parameters (e.g. PO for dispatch) ---
+    public function getMaterialsForOperation(Request $request)
+    {
+        $request->validate([
+            'purchase_order_ulid' => 'nullable|string',
+            'warehouse_ulid' => 'nullable|string',
+            'project_ulid' => 'nullable|string',
+            'type' => 'required|in:dispatch,return,adjust',
+        ]);
+
+        $query = Material::select('id', 'ulid', 'name', 'sku', 'unit', 'unit_cost')
+            ->with(['warehouseStocks', 'projectInventories']);
+
+        if ($request->type === 'dispatch') {
+            if ($request->filled('purchase_order_ulid')) {
+                $po = PurchaseOrder::where('ulid', $request->purchase_order_ulid)->first();
+                if ($po) {
+                    $materialIds = $po->items()->pluck('material_id');
+                    $query->whereIn('id', $materialIds);
+                } else {
+                    $query->whereRaw('1 = 0');
+                }
+            } else {
+                $query->whereRaw('1 = 0');
+            }
+        }
+
+        $materials = $query->get();
+
+        return response()->json($materials);
+    }
+
     // --- Dispatch from Warehouse to Project ---
     public function dispatchFromWarehouse(Request $request)
     {
         $validated = $request->validate([
             'warehouse_ulid' => 'required|string',
             'project_ulid' => 'required|string',
+            'purchase_order_ulid' => 'required|string|exists:purchase_orders,ulid',
             'handler_id' => 'required|integer|exists:users,id',
             'notes' => 'nullable|string|max:500',
             'items' => 'required|array|min:1',
@@ -170,11 +204,23 @@ class MaterialController extends Controller
 
         $warehouse = Warehouse::where('ulid', $validated['warehouse_ulid'])->firstOrFail();
         $project = Project::where('ulid', $validated['project_ulid'])->firstOrFail();
+        $po = PurchaseOrder::where('ulid', $validated['purchase_order_ulid'])->firstOrFail();
+
+        if ($po->project_id !== $project->id || $po->target_warehouse_id !== $warehouse->id) {
+            return back()->with('error', 'The selected Purchase Order is not associated with this project and warehouse.');
+        }
+
+        $poMaterialIds = $po->items()->pluck('material_id')->toArray();
 
         DB::beginTransaction();
         try {
             foreach ($validated['items'] as $item) {
                 $material = Material::where('ulid', $item['material_ulid'])->firstOrFail();
+                
+                if (!in_array($material->id, $poMaterialIds)) {
+                    throw new \InvalidArgumentException("Material {$material->name} is not listed in the selected Purchase Order.");
+                }
+
                 $batchId = null;
 
                 if (! empty($item['inventory_batch_ulid'])) {