Add /servers/surprise endpoint

src/classes/Controllers/Api/Surprise.php

@@ -0,0 +1,39 @@
+<?php
+
+namespace Friendica\Directory\Controllers\Api;
+
+use Friendica\Directory\Content\Pager;
+use Psr\Http\Message\ResponseInterface;
+use Psr\Http\Message\ServerRequestInterface;
+
+/**
+ * @author Hypolite Petovan <mrpetovan@gmail.com>
+ */
+class Surprise
+{
+	/**
+	 * @var \Atlas\Pdo\Connection
+	 */
+	private $atlas;
+
+	public function __construct(
+		\Atlas\Pdo\Connection $atlas
+	)
+	{
+		$this->atlas = $atlas;
+	}
+
+	public function render(\Slim\Http\Request $request, \Slim\Http\Response $response, array $args): \Slim\Http\Response
+	{
+		$redirectUrl = '';
+
+		$sql = 'SELECT base_url FROM server WHERE reg_policy = "REGISTER_OPEN" AND health_score > 75 ORDER BY health_score DESC, RAND()';
+
+		$server = $this->atlas->fetchOne($sql);
+		if ($server) {
+			$redirectUrl = $server['base_url'];
+		}
+
+		return $response->withRedirect($redirectUrl);
+	}
+}