<?php

/**
 * smoke-test-session-keepalive.php — verifies that the session keepalive path
 * (AdminAuth::isAuthenticated(), called by /admin/session-keepalive.php)
 * refreshes the activity timestamp, and that a genuinely idle session is
 * rejected — i.e. the keepalive does not defeat the idle timeout.
 *
 * Runs against a throwaway SQLite DB; never touches the live dev/prod DB.
 *
 * Usage:
 *   php scripts/smoke-test-session-keepalive.php
 *
 * Exits 0 on success, 1 on any failure.
 */

declare(strict_types=1);

$root = dirname(__DIR__);

require_once $root . '/app/bootstrap.php';
require_once $root . '/app/src/Database.php';
require_once $root . '/app/src/AdminAuth.php';

$failures = 0;
function check(string $label, bool $ok): void
{
    global $failures;
    echo ($ok ? "  ✓ " : "  ✗ ") . $label . "\n";
    if (!$ok) {
        $failures++;
    }
}

// ── Throwaway DB with a configured password (so the guard is active) ─────────
$tmp = tempnam(sys_get_temp_dir(), 'xamxam-keepalive-');
unlink($tmp);
$tmpDb = $tmp . '.db';

$pdo = new PDO('sqlite:' . $tmpDb);
$pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
$pdo->setAttribute(PDO::ATTR_DEFAULT_FETCH_MODE, PDO::FETCH_ASSOC);
$pdo->exec(file_get_contents(APP_ROOT . '/storage/schema.sql'));

$db = new Database($tmpDb);
AdminAuth::setDatabase($db);
$db->setSetting('admin_password_hash', password_hash('irrelevant-password-123', PASSWORD_BCRYPT));

// Session must be active before seeding $_SESSION, or session_start() inside
// AdminAuth::startSession() would overwrite it from (empty) session storage.
// Buffer output so session-setup calls never warn about sent headers after a
// session was destroyed and restarted mid-test.
ini_set('session.save_path', sys_get_temp_dir());
ini_set('session.use_cookies', '0');
ob_start();
session_start();

// ── 1. An unauthenticated session is rejected on the first request ────────────
$_SESSION = [];
check('empty session is NOT authenticated', AdminAuth::isAuthenticated() === false);

// ── 2. An active session is authenticated and refreshes last activity ────────
$_SESSION = [
    'admin_authenticated' => true,
    'admin_login_at'      => time() - 60,
    'admin_last_activity' => time() - 60,
];
$before = $_SESSION['admin_last_activity'];
check('active session is authenticated', AdminAuth::isAuthenticated() === true);
check('activity timestamp refreshed', $_SESSION['admin_last_activity'] > $before);

// ── 2b. A session idle within the 4 h window is still accepted ───────────────
// Two hours away from an open form (e.g. working in another app) no longer
// logs the admin out mid-marathon.
$_SESSION = [
    'admin_authenticated' => true,
    'admin_login_at'      => time() - 7200,
    'admin_last_activity' => time() - 7200, // 2 h idle < 4 h idle timeout
];
check('session idle 2 h is still authenticated', AdminAuth::isAuthenticated() === true);

// ── 2c. Session ID rotation fires on the interval, not on an exact modulo ────
// Seed a rotation older than the 30 min interval; a request at an arbitrary
// time must still rotate (the old modulo-on-age check never fired).
$_SESSION = [
    'admin_authenticated' => true,
    'admin_login_at'      => time() - 60,
    'admin_last_activity' => time() - 60,
    'admin_last_rotation' => time() - 3600, // 1 h since last rotation
];
$sidBefore = session_id();
AdminAuth::isAuthenticated();
check('stale rotation triggers session_regenerate_id', session_id() !== $sidBefore);
check('rotation timestamp updated', ($_SESSION['admin_last_rotation'] ?? 0) > time() - 60);

// ── 3. An idle session is rejected and destroyed (no redirect/exit) ──────────
// Last: enforceSessionTimeout() destroys the session, so no further auth call
// restarts it (which would warn under CLI header constraints).
$_SESSION = [
    'admin_authenticated' => true,
    'admin_login_at'      => time() - 21600,
    'admin_last_activity' => time() - 21600, // 6 h idle > 4 h idle timeout
];
check('idle session is NOT authenticated', AdminAuth::isAuthenticated() === false);
check('idle session was destroyed', empty($_SESSION['admin_authenticated']));

// ── Cleanup ─────────────────────────────────────────────────────────────────
$db->setSetting('admin_password_hash', '');
unlink($tmpDb);
ob_end_flush();

echo "\n";
if ($failures === 0) {
    echo "✅ Session-keepalive smoke test passed.\n";
    exit(0);
}
echo "❌ {$failures} check(s) failed.\n";
exit(1);