Allow task attach search across global tasks

app/Models/TaskCollection.php

@@ -8,6 +8,7 @@ use Illuminate\Database\Eloquent\Relations\BelongsTo;
 use Illuminate\Database\Eloquent\Relations\BelongsToMany;
 use Illuminate\Database\Eloquent\Relations\HasMany;
 use Illuminate\Support\Arr;
+use Illuminate\Support\Facades\DB;
 
 class TaskCollection extends Model
 {
@@ -99,6 +100,27 @@ class TaskCollection extends Model
         return $value ?: null;
     }
 
+    /**
+     * @param  array<int, int|string>  $taskIds
+     */
+    public function reassignTasks(array $taskIds): void
+    {
+        $ids = array_values(array_unique(array_map('intval', $taskIds)));
+
+        if ($ids === []) {
+            return;
+        }
+
+        DB::table('task_collection_task')
+            ->whereIn('task_id', $ids)
+            ->where('task_collection_id', '!=', $this->getKey())
+            ->delete();
+
+        Task::query()
+            ->whereIn('id', $ids)
+            ->update(['collection_id' => $this->getKey()]);
+    }
+
     protected function resolveTranslation(string $attribute, ?string $locale = null): string
     {
         $translations = $this->{$attribute} ?? [];