migration to mysql

cli/migrate_sqlite_to_mysql.php

@@ -0,0 +1,82 @@
+#!/usr/bin/env php
+<?php
+
+declare(strict_types=1);
+
+/**
+ * One-time migration: encrypted SQLite file -> MySQL database.
+ *
+ * Usage:
+ *   php cli/migrate_sqlite_to_mysql.php
+ *
+ * Requires QDB_MASTER_KEY (source SQLite) and QDB_MYSQL_* variables (target).
+ */
+
+require_once __DIR__ . '/../vendor/autoload.php';
+require_once __DIR__ . '/../lib/response.php';
+require_once __DIR__ . '/../common.php';
+qdb_env_override('QDB_DRIVER', 'sqlite');
+require_once __DIR__ . '/../db_init.php';
+
+if (!is_file(QDB_PATH)) {
+    fwrite(STDERR, "SQLite database file not found at " . QDB_PATH . PHP_EOL);
+    exit(1);
+}
+
+[$sqlitePdo, $tmpDb, $lockFp] = qdb_open(false);
+
+$tables = $sqlitePdo->query(
+    "SELECT name FROM sqlite_master WHERE type = 'table' AND name NOT LIKE 'sqlite_%' ORDER BY name"
+)->fetchAll(PDO::FETCH_COLUMN);
+
+$tableData = [];
+foreach ($tables as $table) {
+    $tableData[$table] = $sqlitePdo->query("SELECT * FROM `{$table}`")->fetchAll(PDO::FETCH_ASSOC);
+}
+qdb_discard($tmpDb, $lockFp);
+
+qdb_reset_driver_cache();
+qdb_env_override('QDB_DRIVER', 'mysql');
+
+[$mysqlPdo] = qdb_mysql_open();
+qdb_mysql_ensure_ready($mysqlPdo);
+
+qdb_set_foreign_keys($mysqlPdo, false);
+$mysqlPdo->beginTransaction();
+
+try {
+    foreach ($tableData as $table => $rows) {
+        if (!qdb_table_exists($mysqlPdo, $table)) {
+            throw new RuntimeException("MySQL schema is missing source table: {$table}");
+        }
+        $mysqlPdo->exec("DELETE FROM `{$table}`");
+        if (!$rows) {
+            echo "{$table}: 0 rows\n";
+            continue;
+        }
+        $columns = array_keys($rows[0]);
+        $colList = implode(', ', array_map(fn($c) => "`{$c}`", $columns));
+        $placeholders = implode(', ', array_map(fn($c) => ':' . $c, $columns));
+        $insert = $mysqlPdo->prepare("INSERT INTO `{$table}` ({$colList}) VALUES ({$placeholders})");
+        foreach ($rows as $row) {
+            $params = [];
+            foreach ($columns as $column) {
+                $params[':' . $column] = $row[$column];
+            }
+            $insert->execute($params);
+        }
+        echo "{$table}: " . count($rows) . " rows\n";
+    }
+    $mysqlPdo->commit();
+} catch (Throwable $e) {
+    if ($mysqlPdo->inTransaction()) {
+        $mysqlPdo->rollBack();
+    }
+    throw $e;
+} finally {
+    qdb_set_foreign_keys($mysqlPdo, true);
+}
+
+qdb_set_schema_version($mysqlPdo, QDB_VERSION);
+
+echo "Migration complete. Set QDB_DRIVER=mysql in .env and restart PHP.\n";