feat: implement integration management with CRUD operations and routes for tenant integration

app/Domains/Integration/Casts/EncryptedIntegrationData.php

@@ -0,0 +1,66 @@
+<?php
+
+namespace App\Domains\Integration\Casts;
+
+use Illuminate\Contracts\Database\Eloquent\CastsAttributes;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Encryption\Encrypter;
+use Exception;
+
+class EncryptedIntegrationData implements CastsAttributes
+{
+    protected function getEncrypter(): Encrypter
+    {
+        $secret = env('INTEGRATION_SECRET');
+        
+        if (empty($secret)) {
+            throw new Exception('INTEGRATION_SECRET is not set in the environment.');
+        }
+
+        // Laravel encrypter requires a key of exact length. Typically 32 bytes for AES-256-CBC.
+        // If the secret is base64 encoded like the APP_KEY:
+        if (str_starts_with($secret, 'base64:')) {
+            $key = base64_decode(substr($secret, 7));
+        } else {
+            // Otherwise, we hash it to ensure 32 bytes for AES-256-CBC.
+            $key = hash('sha256', $secret, true);
+        }
+        
+        return new Encrypter($key, config('app.cipher', 'AES-256-CBC'));
+    }
+
+    /**
+     * Cast the given value.
+     *
+     * @param  array<string, mixed>  $attributes
+     */
+    public function get(Model $model, string $key, mixed $value, array $attributes): mixed
+    {
+        if ($value === null) {
+            return null;
+        }
+
+        try {
+            $decrypted = $this->getEncrypter()->decryptString($value);
+            return json_decode($decrypted, true);
+        } catch (Exception $e) {
+            // Return null or throw depending on how strict we want to be.
+            return null;
+        }
+    }
+
+    /**
+     * Prepare the given value for storage.
+     *
+     * @param  array<string, mixed>  $attributes
+     */
+    public function set(Model $model, string $key, mixed $value, array $attributes): mixed
+    {
+        if ($value === null) {
+            return null;
+        }
+
+        $json = json_encode($value);
+        return $this->getEncrypter()->encryptString($json);
+    }
+}