Add Authenticate class for handling authentication logic

src/Socialbox/Classes/StandardMethods/Authenticate.php

@@ -0,0 +1,50 @@
+<?php
+
+namespace Socialbox\Classes\StandardMethods;
+
+use Socialbox\Abstracts\Method;
+use Socialbox\Enums\FirstLevelAuthentication;
+use Socialbox\Enums\StandardError;
+use Socialbox\Interfaces\SerializableInterface;
+use Socialbox\Objects\ClientRequest;
+use Socialbox\Objects\RpcRequest;
+use Socialbox\Objects\RpcResponse;
+
+class Authenticate extends Method
+{
+    /**
+     * @inheritDoc
+     */
+    public static function execute(ClientRequest $request, RpcRequest $rpcRequest): ?SerializableInterface
+    {
+        if(!isset($rpcRequest->getParameters()['type']))
+        {
+            return $rpcRequest->produceError(StandardError::RPC_INVALID_ARGUMENTS, 'Missing required parameter \'type\'');
+        }
+
+        if(strlen($rpcRequest->getParameters()['type']) == 0)
+        {
+            return $rpcRequest->produceError(StandardError::RPC_INVALID_ARGUMENTS, 'Parameter \'type\' cannot be empty');
+        }
+
+        return match (FirstLevelAuthentication::tryFrom($rpcRequest->getParameters()['type']))
+        {
+            FirstLevelAuthentication::PASSWORD => self::handlePassword($request),
+
+            default => $rpcRequest->produceError(StandardError::UNSUPPORTED_AUTHENTICATION_TYPE,
+                sprintf('Unsupported authentication type: %s', $rpcRequest->getParameters()['type'])
+            ),
+        };
+    }
+
+    /**
+     * Handles the password authentication phase for the peer
+     *
+     * @param ClientRequest $request
+     * @return SerializableInterface
+     */
+    private static function handlePassword(ClientRequest $request): SerializableInterface
+    {
+
+    }
+}