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| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * The phpMyFAQ instance basic database class. |
| 5 | * |
| 6 | * This Source Code Form is subject to the terms of the Mozilla Public License, |
| 7 | * v. 2.0. If a copy of the MPL was not distributed with this file, You can |
| 8 | * obtain one at https://mozilla.org/MPL/2.0/ |
| 9 | * |
| 10 | * @package phpMyFAQ |
| 11 | * @author Thorsten Rinne <thorsten@phpmyfaq.de> |
| 12 | * @copyright 2015-2026 phpMyFAQ Team |
| 13 | * @license https://www.mozilla.org/MPL/2.0/ Mozilla Public License Version 2.0 |
| 14 | * @link https://www.phpmyfaq.de |
| 15 | * @since 2015-02-14 |
| 16 | */ |
| 17 | |
| 18 | declare(strict_types=1); |
| 19 | |
| 20 | namespace phpMyFAQ\Instance; |
| 21 | |
| 22 | use phpMyFAQ\Configuration; |
| 23 | use phpMyFAQ\Core\Exception; |
| 24 | use phpMyFAQ\Instance\Database\DriverInterface; |
| 25 | use phpMyFAQ\Setup\Installation\SchemaInstaller; |
| 26 | use phpMyFAQ\Setup\Migration\QueryBuilder\DialectFactory; |
| 27 | |
| 28 | /** |
| 29 | * Class Database |
| 30 | * |
| 31 | * @package phpMyFAQ\Instance |
| 32 | */ |
| 33 | class Database |
| 34 | { |
| 35 | /** |
| 36 | * Instance. |
| 37 | */ |
| 38 | private static ?DriverInterface $driver = null; |
| 39 | |
| 40 | /** |
| 41 | * Constructor. |
| 42 | */ |
| 43 | private function __construct( |
| 44 | protected Configuration $configuration, |
| 45 | ) { |
| 46 | } |
| 47 | |
| 48 | /** |
| 49 | * Database factory. |
| 50 | * |
| 51 | * Returns a SchemaInstaller that uses the dialect-agnostic DatabaseSchema. |
| 52 | * |
| 53 | * @param Configuration $configuration phpMyFAQ configuration container |
| 54 | * @param string $type Database management system type |
| 55 | * @throws Exception |
| 56 | */ |
| 57 | public static function factory(Configuration $configuration, string $type): DriverInterface |
| 58 | { |
| 59 | try { |
| 60 | $dialect = DialectFactory::createForType(strtolower($type)); |
| 61 | } catch (\InvalidArgumentException) { |
| 62 | throw new Exception('Invalid Database Type: ' . $type); |
| 63 | } |
| 64 | |
| 65 | self::$driver = new SchemaInstaller($configuration, $dialect); |
| 66 | |
| 67 | return self::$driver; |
| 68 | } |
| 69 | |
| 70 | /** |
| 71 | * Returns the single instance. |
| 72 | */ |
| 73 | public static function getInstance(): ?DriverInterface |
| 74 | { |
| 75 | return self::$driver; |
| 76 | } |
| 77 | |
| 78 | /** |
| 79 | * Creates a dedicated tenant database for supported drivers (PostgreSQL, SQL Server). |
| 80 | * |
| 81 | * @throws \RuntimeException if the driver does not support database-per-tenant isolation |
| 82 | */ |
| 83 | public static function createTenantDatabase(Configuration $configuration, string $type, string $databaseName): bool |
| 84 | { |
| 85 | $normalizedType = strtolower($type); |
| 86 | |
| 87 | if (!preg_match('/^[A-Za-z0-9_]+$/', $databaseName)) { |
| 88 | throw new \InvalidArgumentException(sprintf('Invalid tenant database identifier: "%s".', $databaseName)); |
| 89 | } |
| 90 | |
| 91 | if (str_contains($normalizedType, 'pgsql')) { |
| 92 | $existsQuery = sprintf( |
| 93 | "SELECT 1 FROM pg_database WHERE datname = '%s'", |
| 94 | $configuration->getDb()->escape($databaseName), |
| 95 | ); |
| 96 | $existsResult = $configuration->getDb()->query($existsQuery); |
| 97 | if ($existsResult !== false && $configuration->getDb()->numRows($existsResult) > 0) { |
| 98 | return true; |
| 99 | } |
| 100 | |
| 101 | return (bool) $configuration->getDb()->query(sprintf('CREATE DATABASE "%s"', $databaseName)); |
| 102 | } |
| 103 | |
| 104 | if (str_contains($normalizedType, 'sqlsrv')) { |
| 105 | return (bool) $configuration |
| 106 | ->getDb() |
| 107 | ->query(sprintf( |
| 108 | "IF DB_ID('%s') IS NULL CREATE DATABASE [%s]", |
| 109 | $configuration->getDb()->escape($databaseName), |
| 110 | $databaseName, |
| 111 | )); |
| 112 | } |
| 113 | |
| 114 | throw new \RuntimeException(sprintf( |
| 115 | 'Database-per-tenant isolation is not supported for driver "%s". Use PostgreSQL or SQL Server.', |
| 116 | $type, |
| 117 | )); |
| 118 | } |
| 119 | } |