permissions refactoring

app/Models/PermissionAssignment.php

@@ -0,0 +1,37 @@
+<?php
+
+namespace App\Models;
+
+use App\Enums\Permission;
+use Database\Factories\PermissionAssignmentFactory;
+use Illuminate\Database\Eloquent\Attributes\Fillable;
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\MorphTo;
+
+#[Fillable(['permission', 'assignee_type', 'assignee_id', 'scope_type', 'scope_id'])]
+class PermissionAssignment extends Model
+{
+    /** @use HasFactory<PermissionAssignmentFactory> */
+    use HasFactory;
+
+    /**
+     * @return array<string, string>
+     */
+    protected function casts(): array
+    {
+        return [
+            'permission' => Permission::class,
+        ];
+    }
+
+    public function assignee(): MorphTo
+    {
+        return $this->morphTo();
+    }
+
+    public function scope(): MorphTo
+    {
+        return $this->morphTo();
+    }
+}