mirror of
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82 lines
2.5 KiB
JavaScript
82 lines
2.5 KiB
JavaScript
'use strict';
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import {Component, h, html, render, useEffect, useState, useRef} from './preact.min.js';
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const Message = m => html`<span
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style="color: ${m.message.uart ? '#444' : '#373'};">
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${m.message.data}
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</span>`;
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const App = function(props) {
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const [cfg, setCfg] = useState({tcp: '', ws: ''});
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const [messages, setMessages] = useState([]);
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const [txt, setTxt] = useState('');
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const [connected, setConnected] = useState(false);
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const [ws, setWs] = useState(null);
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const tcp_port = cfg.tcp.split(':')[2] || 4001;
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const ws_port = cfg.ws.split(':')[2] || 4002;
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const refresh = () =>
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fetch('/api/config/get').then(r => r.json()).then(r => setCfg(r));
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const watchWebsocket = function() {
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// Connect to websocker port, to implement WS console
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var l = window.location, proto = l.protocol.replace('http', 'ws');
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var tid, url = `${proto}//${l.hostname}:${ws_port}/ws`;
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console.log(url);
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var reconnect = function() {
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var ws = new WebSocket(url);
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ws.onopen = () => {
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setConnected(true);
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setWs(ws);
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};
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ws.onmessage = ev => {
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// console.log(ev, ev.data);
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setMessages(x => x.concat([{data: ev.data, uart: true}]));
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};
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ws.onclose = function() {
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clearTimeout(tid);
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tid = setTimeout(reconnect, 1000);
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setConnected(false);
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setWs(null);
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};
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};
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reconnect();
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};
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useEffect(() => {
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refresh();
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watchWebsocket();
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}, []);
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const sendmessage = ev => {
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setMessages(x => x.concat([{data: txt + '\n', uart: false}]));
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if (ws) ws.send(txt + '\n');
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setTxt('');
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};
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return html`
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<div class="container">
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<h1>UART \u27F7 network bridge </h1>
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<h3>UART settings</h3>
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<pre class="d-none">${JSON.stringify(cfg, null, 2)}</pre>
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<p>RX pin ${cfg.rx}, TX pin ${cfg.tx}, baud ${cfg.baud}</p>
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<h3>TCP listener: port ${tcp_port}</h3>
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<p>Use netcat to connect:</p>
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<div class="msg"> $ nc ${location.hostname} ${tcp_port} </div>
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<h3>Websocket listener: port ${ws_port}</h3>
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<div>UART console. Status: ${connected ? 'connected' : 'disconnected'}</div>
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<pre style="height: 15em; overflow: auto;">
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${messages.map(message => h(Message, {message}))}
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</pre>
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<div style="margin: 0.5em 0; display: flex">
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<input placeholder="type and press enter..." style="flex: 1 100%;"
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value=${txt} onchange=${sendmessage}
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oninput=${ev => setTxt(ev.target.value)} />
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</div>
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</div>`;
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};
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window.onload = () => render(h(App), document.body);
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