Updated material invoice upload logic

app/Filament/Resources/InvoiceValidationResource.php

@@ -741,10 +741,15 @@ class InvoiceValidationResource extends Resource
                         FileUpload::make('invoice_material')
                             ->label('Invoice Material')
                             ->required()
+                            ->acceptedFileTypes([
+                                'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
+                                'application/vnd.ms-excel', // Legacy .xls fallback if needed
+                            ])
+                            ->rules(['mimes:xlsx']) // Laravel validation: extension check
                             ->preserveFilenames() // <- this keeps the original filename
                             ->reactive()
-                            ->storeFiles(false) // prevent auto-storing
-                            ->disk('local')
+                            ->storeFiles(false) // prevent auto-storing, we will store manually
+                            ->disk('local') // 'local' refers to the local storage disk defined in config/filesystems.php, typically pointing to storage/app.
                             ->visible(fn (Get $get) => ! empty($get('plant_id')))
                             ->directory(function (callable $get) {
                                 $plant = Plant::find($get('plant_id'));
@@ -752,6 +757,7 @@ class InvoiceValidationResource extends Resource
 
                                 return "uploads/temp/{$plantCode}";
                             })
+                            ->uploadingMessage('Uploading...')
                             ->helperText('Only .xlsx files are allowed (Excel files).'),
                     ])
                     ->action(function (array $data) {