Implemented the /ascii command

src/Command/Game/Cli.php

@@ -14,6 +14,7 @@
 use ChessServer\Command\Game\Async\StockfishCommand;
 use ChessServer\Command\Game\Async\TutorFenCommand;
 use ChessServer\Command\Game\Sync\AcceptPlayRequestCommand;
+use ChessServer\Command\Game\Sync\AsciiCommand;
 use ChessServer\Command\Game\Sync\DrawCommand;
 use ChessServer\Command\Game\Sync\EvalNamesCommand;
 use ChessServer\Command\Game\Sync\LegalCommand;
@@ -32,6 +33,7 @@ public function __construct(Pool $pool)
         parent::__construct();
 
         // text-based commands
+        $this->commands->attach(new AsciiCommand());
         $this->commands->attach(new EvalNamesCommand());
         $this->commands->attach(new OnlineGamesCommand());
         $this->commands->attach(new UndoCommand());

src/Command/Game/Sync/AsciiCommand.php

@@ -0,0 +1,29 @@
+<?php
+
+namespace ChessServer\Command\Game\Sync;
+
+use ChessServer\Command\AbstractSyncCommand;
+use ChessServer\Socket\AbstractSocket;
+
+class AsciiCommand extends AbstractSyncCommand
+{
+    public function __construct()
+    {
+        $this->name = '/ascii';
+        $this->description = 'Returns an ASCII representation of the board.';
+    }
+
+    public function validate(array $argv)
+    {
+        return count($argv) - 1 === 0;
+    }
+
+    public function run(AbstractSocket $socket, array $argv, int $id)
+    {
+        $gameMode = $socket->getGameModeStorage()->getById($id);
+
+        return $socket->getClientStorage()->send([$id], [
+            $this->name => $gameMode->getGame()->getBoard()->toString(),
+        ]);
+    }
+}