/**
 * webrtc page script
 *
 * Author: Peter Harpending <peterharpending@qpq.swiss>
 * Date: 2026-02-04
 * Copyright: Copyright (c) 2026 QPQ AG
 *
 * Reference: https://git.qpq.swiss/QPQ-AG/research-megadoc/src/commit/c7c4592d4b21ad120145ef63334471a1a7ec1e60/paste/2026-02/grok-webrtc.html
 *
 * @module
 */

main();

async function
main
    ()
    : Promise<void>
{
    // start websocket immediately
    let ws: WebSocket;
    let init = document.getElementById('init') as HTMLDivElement;
    let init_join = document.getElementById('init-join') as HTMLButtonElement;

    // handle button click
    init_join.addEventListener('click',
        function() {
            init.hidden = true;
            ws = new WebSocket('/ws/webrtc');
            ws.onopen    = function(e) { console.log('ws open'); };
            ws.onclose   = function(e) { console.warn('ws closed'); };
            ws.onerror   = function(e) { console.error('ws error:', e); };
            ws.onmessage =
                function(e) {
                    // console.log('ws message:', e.data);
                    let message = JSON.parse(e.data) as ws_msg;
                    handle_ws_msg(message);
                };
        }
    );
}

type ws_msg = ["join", string]
            | ["down", string];

function
handle_ws_msg
    (message: ws_msg)
    : void
{
    console.log('message from server:', message);
}



function
ws_send_json
    (ws : WebSocket,
     x  : any)
    : void
{
    let s: string = JSON.stringify(x, undefined, 4);
    console.log('sending:\n', s);

    ws.send(s);
}