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| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * Installs the database schema using the dialect-agnostic DatabaseSchema. |
| 5 | * |
| 6 | * Iterates over each table definition from DatabaseSchema, builds CREATE TABLE |
| 7 | * and CREATE INDEX statements, and executes them via the database connection. |
| 8 | * Implements DriverInterface for backward compatibility with the existing |
| 9 | * Instance\Database factory. |
| 10 | * |
| 11 | * This Source Code Form is subject to the terms of the Mozilla Public License, |
| 12 | * v. 2.0. If a copy of the MPL was not distributed with this file, You can |
| 13 | * obtain one at https://mozilla.org/MPL/2.0/. |
| 14 | * |
| 15 | * @package phpMyFAQ |
| 16 | * @author Thorsten Rinne <thorsten@phpmyfaq.de> |
| 17 | * @copyright 2026 phpMyFAQ Team |
| 18 | * @license https://www.mozilla.org/MPL/2.0/ Mozilla Public License Version 2.0 |
| 19 | * @link https://www.phpmyfaq.de |
| 20 | * @since 2026-01-31 |
| 21 | */ |
| 22 | |
| 23 | declare(strict_types=1); |
| 24 | |
| 25 | namespace phpMyFAQ\Setup\Installation; |
| 26 | |
| 27 | use phpMyFAQ\Configuration; |
| 28 | use phpMyFAQ\Database; |
| 29 | use phpMyFAQ\Instance\Database\DriverInterface; |
| 30 | use phpMyFAQ\Setup\Migration\QueryBuilder\DialectFactory; |
| 31 | use phpMyFAQ\Setup\Migration\QueryBuilder\DialectInterface; |
| 32 | |
| 33 | class SchemaInstaller implements DriverInterface |
| 34 | { |
| 35 | private readonly DialectInterface $dialect; |
| 36 | |
| 37 | private readonly DatabaseSchema $schema; |
| 38 | |
| 39 | /** @var string[] Collected SQL for dry-run */ |
| 40 | public array $collectedSql = []; |
| 41 | |
| 42 | public bool $dryRun = false; |
| 43 | |
| 44 | public function __construct( |
| 45 | private readonly Configuration $configuration, |
| 46 | ?DialectInterface $dialect = null, |
| 47 | ) { |
| 48 | $this->dialect = $dialect ?? DialectFactory::create(); |
| 49 | $this->schema = new DatabaseSchema($this->dialect); |
| 50 | } |
| 51 | |
| 52 | /** |
| 53 | * Returns the DatabaseSchema instance. |
| 54 | */ |
| 55 | public function getSchema(): DatabaseSchema |
| 56 | { |
| 57 | return $this->schema; |
| 58 | } |
| 59 | |
| 60 | /** |
| 61 | * Executes all CREATE TABLE and CREATE INDEX statements. |
| 62 | * |
| 63 | * @param string $prefix Table prefix to apply. The previous prefix is restored after execution. |
| 64 | * @param string|null $schema Schema or database name for schema/database-based tenant isolation. |
| 65 | * For MySQL: creates and switches to a database. |
| 66 | * For PostgreSQL: creates and switches to a schema. |
| 67 | */ |
| 68 | public function createTables(string $prefix = '', ?string $schema = null): bool |
| 69 | { |
| 70 | $previousPrefix = Database::getTablePrefix(); |
| 71 | |
| 72 | if ($prefix !== '') { |
| 73 | Database::setTablePrefix($prefix); |
| 74 | } |
| 75 | |
| 76 | $this->collectedSql = []; |
| 77 | |
| 78 | try { |
| 79 | if ($schema !== null && $schema !== '') { |
| 80 | if (!$this->createAndUseSchema($schema)) { |
| 81 | return false; |
| 82 | } |
| 83 | } |
| 84 | |
| 85 | foreach ($this->schema->getAllTables() as $tableBuilder) { |
| 86 | $createTableSql = $tableBuilder->build(); |
| 87 | |
| 88 | if (!$this->executeSql($createTableSql)) { |
| 89 | return false; |
| 90 | } |
| 91 | |
| 92 | foreach ($tableBuilder->buildIndexStatements() as $indexSql) { |
| 93 | if ($this->executeSql($indexSql)) { |
| 94 | continue; |
| 95 | } |
| 96 | |
| 97 | return false; |
| 98 | } |
| 99 | } |
| 100 | |
| 101 | return true; |
| 102 | } finally { |
| 103 | if ($prefix !== '') { |
| 104 | Database::setTablePrefix($previousPrefix ?? ''); |
| 105 | } |
| 106 | } |
| 107 | } |
| 108 | |
| 109 | /** |
| 110 | * Creates a schema/database and switches to it. |
| 111 | * |
| 112 | * For MySQL: CREATE DATABASE + USE. |
| 113 | * For PostgreSQL: CREATE SCHEMA + SET search_path. |
| 114 | */ |
| 115 | private function createAndUseSchema(string $schema): bool |
| 116 | { |
| 117 | $dialectClass = $this->dialect::class; |
| 118 | |
| 119 | if (str_contains($dialectClass, 'Mysql')) { |
| 120 | return ( |
| 121 | $this->executeSql(sprintf('CREATE DATABASE IF NOT EXISTS `%s`', $schema)) |
| 122 | && $this->executeSql(sprintf('USE `%s`', $schema)) |
| 123 | ); |
| 124 | } |
| 125 | |
| 126 | if (str_contains($dialectClass, 'Pgsql')) { |
| 127 | return ( |
| 128 | $this->executeSql(sprintf('CREATE SCHEMA IF NOT EXISTS "%s"', $schema)) |
| 129 | && $this->executeSql(sprintf('SET search_path TO "%s"', $schema)) |
| 130 | ); |
| 131 | } |
| 132 | |
| 133 | if (str_contains($dialectClass, 'Sqlsrv')) { |
| 134 | return $this->executeSql(sprintf( |
| 135 | "IF NOT EXISTS (SELECT * FROM sys.schemas WHERE name = '%s') EXEC('CREATE SCHEMA [%s]')", |
| 136 | $schema, |
| 137 | $schema, |
| 138 | )); |
| 139 | } |
| 140 | |
| 141 | return true; |
| 142 | } |
| 143 | |
| 144 | /** |
| 145 | * Executes all DROP TABLE statements for the schema tables. |
| 146 | */ |
| 147 | public function dropTables(string $prefix = ''): bool |
| 148 | { |
| 149 | if ($prefix === '') { |
| 150 | $prefix = Database::getTablePrefix(); |
| 151 | } |
| 152 | |
| 153 | foreach ($this->schema->getTableNames() as $tableName) { |
| 154 | $sql = sprintf('DROP TABLE %s%s', $prefix, $tableName); |
| 155 | $result = $this->configuration->getDb()->query($sql); |
| 156 | |
| 157 | if (!$result) { |
| 158 | return false; |
| 159 | } |
| 160 | } |
| 161 | |
| 162 | return true; |
| 163 | } |
| 164 | |
| 165 | private function executeSql(string $sql): bool |
| 166 | { |
| 167 | $this->collectedSql[] = $sql; |
| 168 | |
| 169 | if ($this->dryRun) { |
| 170 | return true; |
| 171 | } |
| 172 | |
| 173 | return (bool) $this->configuration->getDb()->query($sql); |
| 174 | } |
| 175 | } |