Add configs array handling methods to SystemConfigProviderInterface

- Add method to get config array
- Add method to update config array
- Add method to get default configs

core/backend/SystemConfig/LegacyHandler/SystemConfigHandler.php

@@ -166,6 +166,38 @@ class SystemConfigHandler extends LegacyHandler implements SystemConfigProviderI
         return self::HANDLER_KEY;
     }
 
+    /**
+     * @inheritDoc
+     */
+    public function getConfigs(): ?array
+    {
+        $this->init();
+
+        $config = $this->getLegacyConfig($this->legacyDir);
+
+        $this->close();
+
+        return $config;
+    }
+
+    /**
+     * @inheritDoc
+     */
+    public function getConfigDefaults(): ?array
+    {
+        $this->init();
+
+        try {
+            $defaults = get_sugar_config_defaults();
+        } catch (Exception $exception) {
+            return null;
+        }
+
+        $this->close();
+
+        return $defaults;
+    }
+
     /**
      * Get system config
      * @param array $config

core/backend/SystemConfig/Service/SystemConfigProviderInterface.php

@@ -28,6 +28,7 @@
 
 namespace App\SystemConfig\Service;
 
+use App\Engine\Model\Feedback;
 use App\SystemConfig\Entity\SystemConfig;
 
 interface SystemConfigProviderInterface
@@ -45,4 +46,23 @@ interface SystemConfigProviderInterface
      * @return SystemConfig|null
      */
     public function getSystemConfig(string $configKey): ?SystemConfig;
+
+    /**
+     * Get legacy config array
+     * @return array|null
+     */
+    public function getConfigs(): ?array;
+
+    /**
+     * Get legacy config defaults
+     * @return array|null
+     */
+    public function getConfigDefaults(): ?array;
+
+    /**
+     * Get system config
+     * @param array $config
+     * @return Feedback
+     */
+    public function updateSystemConfig(array $config): Feedback;
 }