Created config post processor that parses a simplified config to what shlink expects

module/Core/src/ConfigPostProcessor.php

@@ -0,0 +1,50 @@
+<?php
+declare(strict_types=1);
+
+namespace Shlinkio\Shlink\Core;
+
+use Shlinkio\Shlink\Installer\Util\PathCollection;
+use Zend\Stdlib\ArrayUtils;
+
+use function array_intersect_key;
+use function array_key_exists;
+use function Functional\contains;
+use function Functional\reduce_left;
+
+class ConfigPostProcessor
+{
+    private const SIMPLIFIED_CONFIG_MAPPING = [
+        'disable_track_param' => ['app_options', 'disable_track_param'],
+        'short_domain_schema' => ['url_shortener', 'domain', 'schema'],
+        'short_domain_host' => ['url_shortener', 'domain', 'hostname'],
+        'validate_url' => ['url_shortener', 'validate_url'],
+        'not_found_redirect_to' => ['url_shortener', 'not_found_short_url', 'redirect_to'],
+        'db_config' => ['entity_manager', 'connection'],
+        'delete_short_url_threshold' => ['delete_short_urls', 'visits_threshold'],
+        'locale' => ['translator', 'locale'],
+    ];
+    private const SIMPLIFIED_CONFIG_TOGGLES = [
+        'not_found_redirect_to' => ['url_shortener', 'not_found_short_url', 'enable_redirection'],
+        'delete_short_url_threshold' => ['delete_short_urls', 'check_visits_threshold'],
+    ];
+    private const SIMPLIFIED_MERGEABLE_CONFIG = ['db_config'];
+
+    public function __invoke(array $config): array
+    {
+        $existingKeys = array_intersect_key($config, self::SIMPLIFIED_CONFIG_MAPPING);
+
+        return reduce_left($existingKeys, function ($value, string $key, $c, PathCollection $collection) {
+            $path = self::SIMPLIFIED_CONFIG_MAPPING[$key];
+            if (contains(self::SIMPLIFIED_MERGEABLE_CONFIG, $key)) {
+                $value = ArrayUtils::merge($collection->getValueInPath($path), $value);
+            }
+
+            $collection->setValueInPath($value, $path);
+            if (array_key_exists($key, self::SIMPLIFIED_CONFIG_TOGGLES)) {
+                $collection->setValueInPath(true, self::SIMPLIFIED_CONFIG_TOGGLES[$key]);
+            }
+
+            return $collection;
+        }, new PathCollection($config))->toArray();
+    }
+}