<?php

declare(strict_types=1);

require __DIR__.'/../public/perspektivwerk/booking/backend.php';

function expectSame(string $expected, string $actual, string $message): void
{
    if ($expected !== $actual) {
        throw new RuntimeException($message."\nExpected: $expected\nActual: $actual");
    }
}

function expectContains(string $needle, string $haystack, string $message): void
{
    if (!str_contains($haystack, $needle)) throw new RuntimeException($message);
}

$configFile = tempnam(sys_get_temp_dir(), 'sufw-booking-config-');
if ($configFile === false) throw new RuntimeException('Temporary configuration file could not be created.');

try {
    file_put_contents($configFile, "<?php\nreturn ['database_url' => 'mysql://fallback:secret@database:3306/booking'];\n");

    expectSame(
        'mysql://fallback:secret@database:3306/booking',
        bookingDatabaseUrl('', $configFile),
        'The configuration file must be used when DATABASE_URL is empty.'
    );
    expectSame(
        'mysql://environment:secret@database:3306/booking',
        bookingDatabaseUrl('mysql://environment:secret@database:3306/booking', $configFile),
        'DATABASE_URL must take precedence over the configuration file.'
    );
    expectSame('disabled', bookingMailTransport('disabled'), 'Local mail delivery must be explicitly disabled.');

    $calendar = bookingIcsCalendar([
        'id' => '44c5d0f9-6c98-4b04-8d25-c32834d21a61',
        'project' => 'perspektivwerk',
        'title' => 'Erstgespräch PerspektivWerk',
        'starts_at' => '2026-09-14 09:00:00',
        'ends_at' => '2026-09-14 10:00:00',
        'format' => 'vor_ort',
    ]);
    expectContains('BEGIN:VCALENDAR', $calendar, 'The confirmation attachment must be an iCalendar document.');
    expectContains('UID:44c5d0f9-6c98-4b04-8d25-c32834d21a61@sufw-booking', $calendar, 'The iCalendar attachment must contain the event UID.');
} finally {
    unlink($configFile);
}

echo "booking backend configuration tests passed\n";