novas funcionalidades dos formulario

app/Models/SimulationFormDraft.php

@@ -0,0 +1,35 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Support\Facades\Crypt;
+
+class SimulationFormDraft extends Model
+{
+    protected $table = 'simulation_form_drafts';
+
+    protected $fillable = [
+        'id', 'owner_user_id', 'anonymous_token_hash', 'version_no', 'create_key_hash', 'create_payload_hash', 'snapshot_sha256',
+        'personal_snapshot', 'economic_snapshot', 'deleted_at',
+    ];
+
+    protected function casts(): array
+    {
+        return ['version_no' => 'integer', 'deleted_at' => 'immutable_datetime'];
+    }
+
+    /** @param array<string,mixed> $snapshot */
+    public static function encryptSnapshot(array $snapshot): string
+    {
+        return Crypt::encryptString(json_encode($snapshot, JSON_THROW_ON_ERROR | JSON_UNESCAPED_UNICODE));
+    }
+
+    /** @return array<string,mixed> */
+    public static function decryptSnapshot(string $snapshot): array
+    {
+        $decoded = json_decode(Crypt::decryptString($snapshot), true, 32, JSON_THROW_ON_ERROR);
+
+        return is_array($decoded) ? $decoded : [];
+    }
+}