<?php
if (PHP_SAPI !== 'cli') {
    http_response_code(404);
    exit;
}

try {
    require '/var/www/html/includes/conn.php';
    foreach (['in_daper', 'in_soal', 'in_jawab'] as $table) {
        $conn->query("SELECT 1 FROM `$table` LIMIT 0");
    }

    foreach (['001_admin.sql', '002_admin_identity.sql', '003_exam_attempts.sql'] as $file) {
        // Only migrate the historical rec_admin schema, preserving identities.
        if ($file === '002_admin_identity.sql'
            && $conn->query("SHOW COLUMNS FROM rec_admin LIKE 'name'")->num_rows === 0) {
            continue;
        }
        $sql = file_get_contents('/var/www/html/dashboard/migrations/' . $file);
        $conn->multi_query($sql);
        do {
            $result = $conn->store_result();
            if ($result instanceof mysqli_result) {
                $result->free();
            }
        } while ($conn->more_results() && $conn->next_result());
        fwrite(STDOUT, "Applied: $file\n");
    }
    fwrite(STDOUT, "Database ready. Existing accounts and test data were preserved.\n");
} catch (Throwable $error) {
    fwrite(STDERR, 'Migration failed: ' . $error->getMessage() . "\nImport the base database first; see docs/deployment.md.\n");
    exit(1);
}