Show database size in system info tool

src/Controller/ToolsController.php

@@ -86,6 +86,7 @@ class ToolsController extends AbstractController
             //DB section
             'db_type' => $DBInfoHelper->getDatabaseType() ?? 'Unknown',
             'db_version' => $DBInfoHelper->getDatabaseVersion() ?? 'Unknown',
+            'db_size' => $DBInfoHelper->getDatabaseSize(),
         ]);
     }
 

src/Services/Misc/DBInfoHelper.php

@@ -73,4 +73,32 @@ class DBInfoHelper
 
         return null;
     }
+
+    /**
+     * Returns the database size in bytes.
+     * @return int|null The database size in bytes or null if unknown
+     * @throws \Doctrine\DBAL\Exception
+     */
+    public function getDatabaseSize(): ?int
+    {
+        if ($this->connection->getDatabasePlatform() instanceof AbstractMySQLPlatform) {
+            try {
+                return $this->connection->fetchOne('SELECT SUM(data_length + index_length) FROM information_schema.TABLES WHERE table_schema = DATABASE()');
+            } catch (\Doctrine\DBAL\Exception $e) {
+                return null;
+            }
+        }
+
+        if ($this->connection->getDatabasePlatform() instanceof SqlitePlatform) {
+            try {
+                return $this->connection->fetchOne('SELECT page_count * page_size as size FROM pragma_page_count(), pragma_page_size();');
+            } catch (\Doctrine\DBAL\Exception $e) {
+                return null;
+            }
+        }
+
+        return null;
+    }
+
+
 }

src/Twig/FormatExtension.php

@@ -86,6 +86,8 @@ final class FormatExtension extends AbstractExtension
             new TwigFilter('format_si', [$this, 'siFormat']),
             /** Format the given amount using the given MeasurementUnit */
             new TwigFilter('format_amount', [$this, 'amountFormat']),
+            /** Format the given number of bytes as human readable number */
+            new TwigFilter('format_bytes', [$this, 'formatBytes']),
         ];
     }
 
@@ -107,4 +109,16 @@ final class FormatExtension extends AbstractExtension
     {
         return $this->amountFormatter->format($value, $unit, $options);
     }
+
+    /**
+     * @param $bytes
+     * @param int $precision
+     * @return string
+     */
+    public function formatBytes(int $bytes, int $precision = 2): string
+    {
+        $size = ['B','kB','MB','GB','TB','PB','EB','ZB','YB'];
+        $factor = floor((strlen((string) $bytes) - 1) / 3);
+        return sprintf("%.{$precision}f", $bytes / pow(1024, $factor)) . ' ' . @$size[$factor];
+    }
 }

templates/Tools/ServerInfos/_db.html.twig

@@ -9,5 +9,9 @@
         <td>Database Server Version</td>
         <td>{{ db_version }}</td>
     </tr>
+    <tr>
+        <td>Database Size</td>
+        <td>{{ db_size != null ? db_size | format_bytes : 'Unknown' }}</td>
+    </tr>
     </tbody>
 </table>