<?php
declare(strict_types=1);

$pluginDir = dirname(__DIR__);
require_once $pluginDir . '/exec/lib/Settings.php';
require_once $pluginDir . '/exec/lib/MySQLService.php';
require_once $pluginDir . '/exec/lib/PhpMyAdminSso.php';

function fail(string $message): void
{
    fwrite(STDERR, "FAIL: {$message}\n");
    exit(1);
}

function assert_true(bool $condition, string $message): void
{
    if (!$condition) {
        fail($message);
    }
}

function assert_same($expected, $actual, string $message): void
{
    if ($expected !== $actual) {
        fail($message . ' expected=' . var_export($expected, true) . ' actual=' . var_export($actual, true));
    }
}

function load_settings(string $contents): Settings
{
    $path = tempnam(sys_get_temp_dir(), 'altmysql-settings-');
    if ($path === false) {
        fail('cannot create temp settings file');
    }
    file_put_contents($path, $contents);
    $settings = Settings::load($path);
    unlink($path);
    return $settings;
}

// --- phpMyAdmin logout must know the DirectAdmin panel port to build a valid return URL ---

$defaultPanelPortSettings = load_settings('');
assert_same('2222', $defaultPanelPortSettings->directAdminPanelPort(), 'DIRECTADMIN_PANEL_PORT should default to 2222');

$customPanelPortSettings = load_settings("DIRECTADMIN_PANEL_PORT=2280\n");
assert_same('2280', $customPanelPortSettings->directAdminPanelPort(), 'DIRECTADMIN_PANEL_PORT should be configurable');

$invalidPanelPortSettings = load_settings("DIRECTADMIN_PANEL_PORT=not-a-port\n");
assert_same('2222', $invalidPanelPortSettings->directAdminPanelPort(), 'a non-numeric DIRECTADMIN_PANEL_PORT should fall back to 2222');

// --- Temporary SSO role must be host-scoped, not wildcard '%' ---

$mysqlServiceSource = (string)file_get_contents($pluginDir . '/exec/lib/MySQLService.php');
assert_true(
    !str_contains($mysqlServiceSource, "@\\'%\\'"),
    'MySQLService must not create/grant/drop temporary phpMyAdmin SSO roles on the wildcard host (%)'
);

$mysqlServiceClass = new ReflectionClass(MySQLService::class);
assert_true($mysqlServiceClass->hasConstant('TMP_ROLE_HOST'), 'MySQLService must define a TMP_ROLE_HOST constant');
assert_same('127.0.0.1', $mysqlServiceClass->getConstant('TMP_ROLE_HOST'), 'TMP_ROLE_HOST must scope the temporary SSO role to the phpMyAdmin app host');

// --- phpMyAdmin SSO must only grant access to the database being logged into, not every database the account owns ---

$ssoClassForGrants = new ReflectionClass(PhpMyAdminSso::class);
assert_true($ssoClassForGrants->hasMethod('determineGrantTargets'), 'PhpMyAdminSso must expose a determineGrantTargets() decision method');
$determineGrantTargets = $ssoClassForGrants->getMethod('determineGrantTargets');
$determineGrantTargets->setAccessible(true);

assert_same(
    ['demo_target'],
    $determineGrantTargets->invoke(null, 'demo_target', ['demo_target', 'demo_other']),
    'issuing a ticket for one database must only grant that database, not every database the user owns'
);
assert_same(
    [],
    $determineGrantTargets->invoke(null, 'not_owned', ['demo_target', 'demo_other']),
    'a target database that is not in the owned list must never be granted'
);

// --- phpMyAdmin login ticket files must not be world-readable ---

$ssoDir = sys_get_temp_dir() . '/altmysql-pma-sso-' . bin2hex(random_bytes(4));
mkdir($ssoDir, 0755, true);

$settings = load_settings("PHPMYADMIN_SSO_DIR={$ssoDir}\nPHPMYADMIN_TICKET_TTL=60\n");

$ssoClass = new ReflectionClass(PhpMyAdminSso::class);
/** @var PhpMyAdminSso $sso */
$sso = $ssoClass->newInstanceWithoutConstructor();
$settingsProp = $ssoClass->getProperty('settings');
$settingsProp->setAccessible(true);
$settingsProp->setValue($sso, $settings);

$writeTicket = $ssoClass->getMethod('writeLoginTicket');
$writeTicket->setAccessible(true);
$auth = [
    'user' => 'da_tmp_phpmyadmin_demo_test',
    'password' => 'secret-password',
    'host' => '127.0.0.1',
    'port' => 33033,
    'db' => 'demo_db',
];
$token = $writeTicket->invoke($sso, $auth, 'demo_db');

assert_true(preg_match('/\A[a-f0-9]{64}\z/', $token) === 1, 'ticket token must be a 64 char lowercase hex string');

$ticketPath = $ssoDir . '/tickets/' . $token . '.json';
assert_true(is_file($ticketPath), 'ticket file must be written to <sso_dir>/tickets/<token>.json');

$mode = fileperms($ticketPath) & 0777;
assert_same(0640, $mode, 'ticket files contain a plaintext MySQL password and must not be world-readable (expected 0640)');

$decoded = json_decode((string)file_get_contents($ticketPath), true);
assert_true(is_array($decoded), 'ticket file must contain valid JSON');
assert_same('demo_db', $decoded['db'] ?? null, 'ticket must record the target database');
assert_same('da_tmp_phpmyadmin_demo_test', $decoded['auth']['user'] ?? null, 'ticket must record the temporary role name');

// cleanup
array_map('unlink', glob($ssoDir . '/tickets/*') ?: []);
@rmdir($ssoDir . '/tickets');
@rmdir($ssoDir);

echo "phpmyadmin_sso_test: OK\n";