// Service worker: shows a notification when the server pushes a finished job,
// and focuses (or opens) the dashboard when the notification is clicked.

const STATUS_TEXT = {
    success: 'succeeded', failed: 'failed', cancelled: 'was cancelled', interrupted: 'was interrupted'
};
const STATUS_ICON = { success: '✓', failed: '✗', cancelled: '⊘', interrupted: '⚠' };

self.addEventListener('push', event => {
    let job = {};
    try { job = (event.data && event.data.json()).job || {}; } catch (e) { /* show a generic notice */ }
    const status = STATUS_TEXT[job.status] || 'finished';
    const failed = job.status === 'failed' && job.exit_code !== null && job.exit_code !== undefined;
    const where = job.county ? ` (${job.county_name || job.county})` : '';
    const title = `${STATUS_ICON[job.status] || ''} ${job.label || job.script || 'Job'}${where} ${status}`.trim();
    const body = (failed ? `Exit code ${job.exit_code}. ` : '') +
        (job.user ? `Started by ${job.user}. ` : '') + 'Tap to view the output.';
    event.waitUntil(self.registration.showNotification(title, {
        body,
        tag: job.id || 'job',
        data: { url: '/', jobId: job.id },
    }));
});

self.addEventListener('notificationclick', event => {
    event.notification.close();
    const url = new URL((event.notification.data && event.notification.data.url) || '/', self.location.origin).href;
    event.waitUntil(clients.matchAll({ type: 'window', includeUncontrolled: true }).then(wins => {
        const win = wins.find(w => new URL(w.url).pathname === '/');
        return win ? win.focus() : clients.openWindow(url);
    }));
});