Added an page to view infos about the server (Part-DB, PHP and DB config

src/Services/Misc/DBInfoHelper.php

@@ -0,0 +1,58 @@
+<?php
+
+namespace App\Services\Misc;
+
+use Doctrine\DBAL\Connection;
+use Doctrine\DBAL\Platforms\AbstractMySQLPlatform;
+use Doctrine\DBAL\Platforms\SqlitePlatform;
+use Doctrine\ORM\EntityManagerInterface;
+
+/**
+ * This service provides db independent information about the database.
+ */
+class DBInfoHelper
+{
+    protected Connection $connection;
+    protected EntityManagerInterface $entityManager;
+
+    public function __construct(EntityManagerInterface $entityManager)
+    {
+        $this->entityManager = $entityManager;
+        $this->connection = $entityManager->getConnection();
+    }
+
+    /**
+     * Returns the database type of the used database.
+     * @return string|null Returns 'mysql' for MySQL/MariaDB and 'sqlite' for SQLite. Returns null if unknown type
+     */
+    public function getDatabaseType(): ?string
+    {
+        if ($this->connection->getDatabasePlatform() instanceof AbstractMySQLPlatform) {
+            return 'mysql';
+        }
+
+        if ($this->connection->getDatabasePlatform() instanceof SqlitePlatform) {
+            return 'sqlite';
+        }
+
+        return null;
+    }
+
+    /**
+     * Returns the database version of the used database.
+     * @return string|null
+     * @throws \Doctrine\DBAL\Exception
+     */
+    public function getDatabaseVersion(): ?string
+    {
+        if ($this->connection->getDatabasePlatform() instanceof AbstractMySQLPlatform) {
+            return $this->connection->fetchOne('SELECT VERSION()');
+        }
+
+        if ($this->connection->getDatabasePlatform() instanceof SqlitePlatform) {
+            return $this->connection->fetchOne('SELECT sqlite_version()');
+        }
+
+        return null;
+    }
+}

src/Services/Trees/ToolsTreeBuilder.php

@@ -291,6 +291,13 @@ class ToolsTreeBuilder
             ))->setIcon('fa-fw fa-treeview fa-solid fa-binoculars');
         }
 
+        if ($this->security->isGranted('@system.server_infos')) {
+            $nodes[] = (new TreeViewNode(
+                $this->translator->trans('tools.server_infos.title'),
+                $this->urlGenerator->generate('tools_server_infos')
+            ))->setIcon('fa-fw fa-treeview fa-solid fa-database');
+        }
+
         return $nodes;
     }
 }