Add RpcError class to handle RPC error representations

src/Socialbox/Objects/RpcError.php

@@ -0,0 +1,81 @@
+<?php
+
+namespace Socialbox\Objects;
+
+use Socialbox\Interfaces\SerializableInterface;
+
+class RpcError implements SerializableInterface
+{
+    private string $id;
+    private string $error;
+    private int $code;
+
+    /**
+     * Constructs the RPC error object.
+     *
+     * @param string $id The ID of the RPC request
+     * @param string $error The error message
+     * @param int $code The error code
+     */
+    public function __construct(string $id, string $error, int $code)
+    {
+        $this->id = $id;
+        $this->error = $error;
+        $this->code = $code;
+    }
+
+    /**
+     * Returns the ID of the RPC request.
+     *
+     * @return string The ID of the RPC request.
+     */
+    public function getId(): string
+    {
+        return $this->id;
+    }
+
+    /**
+     * Returns the error message.
+     *
+     * @return string The error message.
+     */
+    public function getError(): string
+    {
+        return $this->error;
+    }
+
+    /**
+     * Returns the error code.
+     *
+     * @return int The error code.
+     */
+    public function getCode(): int
+    {
+        return $this->code;
+    }
+
+    /**
+     * Returns an array representation of the object.
+     *
+     * @return array The array representation of the object.
+     */
+    public function toArray(): array
+    {
+        return [
+            'id' => $this->id,
+            'error' => $this->error,
+            'code' => $this->code
+        ];
+    }
+
+    /**
+     * Returns the RPC error object from an array of data.
+     *
+     * @param array $data The data to construct the RPC error from.
+     * @return RpcError The RPC error object.
+     */
+    public static function fromArray(array $data): RpcError
+    {
+        return new RpcError($data['id'], $data['error'], $data['code']);
+    }
+}