Implement mysqldump/backup service/command

src/Service/DatabaseService.php

@@ -0,0 +1,57 @@
+<?php
+
+namespace App\Service;
+
+use mysqli;
+
+class DatabaseService
+{
+    private mysqli $conn;
+
+    public function __construct(
+        private MysqliConnection $service
+    )
+    {
+        $this->conn = $this->service->getConnection();
+    }
+
+    public function listDatabases(): array
+    {
+        $dbs = [];
+        $results = $this->conn->query('SHOW DATABASES');
+        while ($result = $results->fetch_object()) {
+            $dbs[] = $result->Database;
+        }
+
+        return $dbs;
+    }
+
+    public function createDatabase(string $name)
+    {
+        $dbs = $this->listDatabases();
+        if (in_array($name, $dbs)) {
+            throw new \Exception(sprintf('Database "%s" already exists', $name));
+        }
+
+        $result = $this->conn->query(sprintf('CREATE DATABASE `%s`', $name));
+        if (!$result) {
+            throw new \Exception(sprintf('Database create error: %s', $this->conn->error));
+        }
+    }
+
+    public function listUsers(): array
+    {
+        $results = $this->conn->query('select * from mysql.user');
+
+        $users = [];
+        while ($result = $results->fetch_object()) {
+            $users[] = [
+                'name' => $result->User,
+                'host' => $result->Host,
+                'plugin' => $result->plugin,
+            ];
+        }
+
+        return $users;
+    }
+}