Centralized how routes are configured to support multi-segment slugs

module/Core/src/Config/MultiSegmentSlugProcessor.php

@@ -0,0 +1,30 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Shlinkio\Shlink\Core\Config;
+
+use function Functional\map;
+use function str_replace;
+
+class MultiSegmentSlugProcessor
+{
+    private const SINGLE_SHORT_CODE_PATTERN = '{shortCode}';
+    private const MULTI_SHORT_CODE_PATTERN = '{shortCode:.+}';
+
+    public function __invoke(array $config): array
+    {
+        $multiSegmentEnabled = $config['url_shortener']['multi_segment_slugs_enabled'] ?? false;
+        if (! $multiSegmentEnabled) {
+            return $config;
+        }
+
+        $config['routes'] = map($config['routes'] ?? [], static function (array $route): array {
+            ['path' => $path] = $route;
+            $route['path'] = str_replace(self::SINGLE_SHORT_CODE_PATTERN, self::MULTI_SHORT_CODE_PATTERN, $path);
+            return $route;
+        });
+
+        return $config;
+    }
+}