<?php

// Explicit CLI migration: never connect or alter tables during normal web requests.
if (PHP_SAPI !== 'cli') {
    http_response_code(404);
    exit;
}
require_once __DIR__ . '/../classes/Base.php';
$db = (new Base())->connect();
$columns = $db->query('SHOW COLUMNS FROM users')->fetchAll(PDO::FETCH_COLUMN);
foreach (['user_password_hash', 'user_first_name', 'user_last_name', 'user_status', 'user_last_login'] as $column) {
    if (!in_array($column, $columns, true))
        throw new RuntimeException("Missing users.{$column}. Align the database with tables/users.php before migrating; existing account data must be preserved.");
}
$sql = file_get_contents(__DIR__ . '/../migrations/001_auth.sql');
if (in_array('user_auth_version', $columns, true)) {
    $sql = str_replace('ALTER TABLE users ADD COLUMN user_auth_version INT UNSIGNED NOT NULL DEFAULT 0;', '', $sql);
}
foreach (explode(';', $sql) as $statement) {
    if (trim($statement))
        $db->exec($statement);
}
// Refresh the view so users.* includes the new session version column.
require __DIR__ . '/../views/view_users.php';
$db->exec(str_replace('create view', 'CREATE OR REPLACE VIEW', $SQL));
echo "Authentication schema is ready.\n";