Sydenham Station Departures

Simple static web app that shows live inbound departures for Sydenham Station by fetching data from the TfL (Transport for London) Unified API.

It also registers a service worker (sw.js) to cache basic assets for offline/slow-network use (PWA-style).

What it displays

• Filters arrivals to only those whose direction is inbound
• Sorts by expectedArrival
• Shows time remaining in minutes (e.g. 3 min) or Due if the departure time has passed
• Refreshes the departures list every 60 seconds

Configuration

The data source is configured in index.html inside the fetchDepartures() function:

• stopPoint (currently 910GSYDENHM)
• lineId (currently windrush)

If you need a different stop or line, update the fetch URL in index.html.

Local development / running

Because this is a static site, you can serve it with any local static server.

Example (Python):

python3 -m http.server 8000

Then open:

• http://localhost:8000

PWA / service worker notes

• The page registers /sw.js on load (navigator.serviceWorker.register('/sw.js')).
• For the service worker to work correctly:
  • Use HTTPS in production, or
  • Use http://localhost when testing locally.
• manifest.json references icon files (icon-192.png, icon-512.png). Those files are expected to exist in the site root.
  • If you don’t have them, update the icons section of manifest.json (or add the missing PNGs).

License

Add a license header/file if you plan to publish this project.