Update empty weight calculation

app/Http/Controllers/ActivityController.php

@@ -11,6 +11,7 @@ use App\Models\VersionGantt;
 use App\Models\UserToActivity;
 use Illuminate\Http\Request;
 use Illuminate\Support\Facades\DB;
+use Illuminate\Support\Facades\Log;
 
 class ActivityController extends Controller
 {
@@ -348,6 +349,52 @@ class ActivityController extends Controller
 
 		$activityStack = [];
 
+    $hasWeight = false;
+
+    foreach ($data['activities'] as $key => $value) {
+      if(isset($value['weight']) && $value['weight'] != null && $value['weight'] != 0){
+        $hasWeight = true;
+        break;
+      }
+    }
+
+    if(!$hasWeight){
+      foreach ($data['activities'] as $key => $value) {
+        if($key == 0){
+          $data['activities'][$key]['weight'] = 100;
+        } else {
+          $parentWeight = 0;
+          $siblingsCount = 1;
+
+          $i = $key;
+          while($i > 0){
+            if ($data['activities'][$i - 1]['level'] == $data['activities'][$key]['level']-1){
+              $parentWeight = $data['activities'][$i - 1]['weight'];
+              break;
+            }  
+            if ($data['activities'][$key]['level'] == $data['activities'][$i]['level']){
+              $siblingsCount++;
+            }
+            $i--;
+          }  
+        
+          $i = $key+1;
+          while($i < count($data['activities'])){
+            if ($data['activities'][$i]['level'] == $data['activities'][$key]['level']-1){
+              break;
+            }
+            // Log::info('level '.$data['activities'][$key]['level'].' i level '.$data['activities'][$i]['level']);
+            if ($data['activities'][$key]['level'] == $data['activities'][$i]['level']){
+              $siblingsCount++;
+            }
+            $i++;
+          }                   
+
+          $data['activities'][$key]['weight'] = $parentWeight / $siblingsCount;
+          Log::info('level '.$data['activities'][$key]['level'].' bobot '.$data['activities'][$key]['weight'].' parent '.$parentWeight.' siblings '.$siblingsCount);
+        }
+      };
+    }
 		foreach ($data['activities'] as $i => $activity_row) {
 			$startDate = \DateTime::createFromFormat('d-m-y', $activity_row['start_date']);
 			$endDate = \DateTime::createFromFormat('d-m-y', $activity_row['end_date']);