Added subscribe method

src/Models/AbstractModel.php

@@ -16,6 +16,25 @@ abstract readonly class AbstractModel
      */
     public function toArray(): array
     {
-        return get_object_vars($this);
+        return array_map(function ($value) {
+            return $this->convertValue($value);
+        }, get_object_vars($this));
+    }
+
+    private function convertValue(mixed $value): mixed
+    {
+        if ($value instanceof AbstractModel) {
+            return $value->toArray();
+        }
+
+        if (is_array($value)) {
+            return array_map([$this, 'convertValue'], $value);
+        }
+
+        if ($value instanceof \BackedEnum) {
+            return $value->value;
+        }
+
+        return $value;
     }
 }

src/Models/ResultModel.php

@@ -0,0 +1,32 @@
+<?php
+
+declare(strict_types=1);
+
+namespace BushlanovDev\MaxMessengerBot\Models;
+
+/**
+ * Simple response to request.
+ */
+final readonly class ResultModel extends AbstractModel
+{
+    /**
+     * @param bool $success true if request was successful, false otherwise.
+     * @param string|null $message Explanatory message if the result was not successful.
+     */
+    public function __construct(
+        public bool $success,
+        public ?string $message,
+    ) {
+    }
+
+    /**
+     * @inheritDoc
+     */
+    public static function fromArray(array $data): static
+    {
+        return new static(
+            (bool)$data['success'],
+            $data['message'] ?? null,
+        );
+    }
+}

src/Models/Subscription.php

@@ -33,7 +33,7 @@ final readonly class Subscription extends AbstractModel
         $updateTypes = null;
         if (isset($data['update_types']) && is_array($data['update_types'])) {
             $updateTypes = array_map(
-                fn (string $typeValue): UpdateType => UpdateType::from($typeValue),
+                fn(string $typeValue): UpdateType => UpdateType::from($typeValue),
                 $data['update_types'],
             );
         }

src/Models/SubscriptionRequestBody.php

@@ -0,0 +1,45 @@
+<?php
+
+declare(strict_types=1);
+
+namespace BushlanovDev\MaxMessengerBot\Models;
+
+use BushlanovDev\MaxMessengerBot\Enums\UpdateType;
+
+final readonly class SubscriptionRequestBody extends AbstractModel
+{
+    /**
+     * @param string $url URL webhook.
+     * @param string|null $secret Secret key for verifying the authenticity of requests.
+     * @param UpdateType[]|null $update_types List of update types.
+     * @param string|null $version Version of the API.
+     */
+    public function __construct(
+        public string $url,
+        public ?string $secret = null,
+        public ?array $update_types = null,
+        public ?string $version = null,
+    ) {
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public static function fromArray(array $data): static
+    {
+        $updateTypes = null;
+        if (isset($data['update_types']) && is_array($data['update_types'])) {
+            $updateTypes = array_map(
+                fn(string $typeValue): UpdateType => UpdateType::from($typeValue),
+                $data['update_types'],
+            );
+        }
+
+        return new static(
+            (string)$data['url'],
+            $data['secret'] ?? null,
+            $updateTypes,
+            $data['version'] ?? null,
+        );
+    }
+}