Implement Uploadable interface in Config class

The Config class now implements the Uploadable interface, adding `upload` and `remove` methods associated with it. The `uploadConfig` and `removeConfig` methods from UnitInterface have been removed, taking away the responsibility of handling uploads from the Unit class. Additionally, the type hint for `getSettings` has been relaxed to optionally return null to increase flexibility.

Author: Pavlusha311245

src/Config.php

@@ -7,6 +7,7 @@
 use UnitPhpSdk\Config\{AccessLog, Application, Listener, Route, Settings, Upstream, Upstream\Server};
 use UnitPhpSdk\Exceptions\{FileNotFoundException, UnitException};
 use UnitPhpSdk\Contracts\ConfigInterface;
+use UnitPhpSdk\Contracts\Uploadable;
 use UnitPhpSdk\Http\UnitRequest;
 use UnitPhpSdk\Enums\HttpMethodsEnum;
 
@@ -15,7 +16,7 @@
  *
  * @implements ConfigInterface
  */
-class Config implements ConfigInterface
+class Config implements ConfigInterface, Uploadable
 {
     /**
      * Listeners that accept requests
@@ -47,9 +48,9 @@ class Config implements ConfigInterface
     private array $upstreams = [];
 
     /**
-     * @var Settings
+     * @var Settings|null
      */
-    private Settings $settings;
+    private ?Settings $settings = null;
 
     private ?UnitRequest $unitRequest;
 
@@ -614,9 +615,9 @@ private function mapConfigObjectToArray(array $data): array
     }
 
     /**
-     * @return Settings
+     * @return Settings|null
      */
-    public function getSettings(): Settings
+    public function getSettings(): ?Settings
     {
         return $this->settings;
     }
@@ -637,4 +638,38 @@ public function setSettings(Settings $settings): void
     {
         return json_encode($this->toArray());
     }
+
+    /**
+     * @inheritDoc
+     */
+    #[Override] public function upload(UnitRequest $request)
+    {
+        try {
+            $request
+                ->setMethod(HttpMethodsEnum::PUT)
+                ->send('/config', requestOptions: [
+                    'json' => $this->toArray()
+                ]);
+
+            return true;
+        } catch (UnitException) {
+            return false;
+        }
+    }
+
+    /**
+     * @inheritDoc
+     */
+    #[Override] public function remove(UnitRequest $request)
+    {
+        try {
+            $request
+                ->setMethod(HttpMethodsEnum::DELETE)
+                ->send('/config');
+
+            return true;
+        } catch (UnitException) {
+            return false;
+        }
+    }
 }

src/Contracts/ConfigInterface.php

@@ -151,10 +151,11 @@ public function getAccessLog(): ?AccessLog;
      */
     public function removeAccessLog(): bool;
 
+
     /**
-     * @return Settings
+     * @return Settings|null
      */
-    public function getSettings(): Settings;
+    public function getSettings(): ?Settings;
 
     /**
      * @param Settings $settings

src/Contracts/UnitInterface.php

@@ -61,12 +61,6 @@ public function uploadCertificate(string $path, string $certificateName): bool;
      */
     public function getConfig(): ConfigInterface;
 
-    /**
-     * @param Config $config
-     * @return bool
-     */
-    public function uploadConfig(Config $config): bool;
-
     /**
      * Upload full file config
      *
@@ -84,13 +78,6 @@ public function uploadConfigFromFile(string $path): bool;
      */
     public function removeCertificate(string $certificateName): bool;
 
-    /**
-     * Remove all data from config
-     *
-     * @return bool
-     */
-    public function removeConfig(): bool;
-
     /**
      * Retrieve the list of JavaScript modules.
      *

src/Unit.php

@@ -225,11 +225,6 @@ public function getCertificate(string $certificateName): ?CertificateInterface
         return $this->certificates[$certificateName] ?? null;
     }
 
-    public function uploadConfig(Config $config): bool
-    {
-        return true;
-    }
-
     /**
      * @inheritDoc
      * @throws UnitException
@@ -262,22 +257,6 @@ public function uploadConfigFromFile(string $path): bool
         return true;
     }
 
-    /**
-     * @inheritDoc
-     */
-    public function removeConfig(): bool
-    {
-        try {
-            $this->request
-                ->setMethod(HttpMethodsEnum::DELETE->value)
-                ->send('/config');
-        } catch (UnitException) {
-            return false;
-        }
-
-        return true;
-    }
-
     /**
      * Uploads the specified Uploadable object.
      *