freifunkmanager/webroot/js/socket.js

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import * as store from './store';
import config from './config';
import {singelton as notify} from './element/notify';
import {render} from './gui';
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const RECONNECT_AFTER = 5000,
RETRY_QUERY = 300,
query = [],
eventMSGID = {},
eventTo = {};
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let connectionID = localStorage.getItem('session'),
socket = null,
connectionEstablished = false;
function newUUID () {
/* eslint-disable */
return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, (c) => {
const r = Math.random() * 16 | 0,
v = c === 'x' ? r : r & 0x3 | 0x8;
return v.toString(16);
});
/* eslint-enable */
}
function correctMSG (obj) {
if (!obj.id) {
obj.id = newUUID();
}
}
function onerror (err) {
console.warn(err);
// eslint-disable-next-line no-magic-numbers
if (socket.readyState !== 3) {
notify.send({
'header': 'Verbindung',
'type': 'error'
}, 'Verbindung zum Server unterbrochen!');
}
render();
socket.close();
}
function onopen () {
connectionEstablished = true;
render();
}
export function sendjson (obj, callback) {
if (socket.readyState !== 1) {
query.push({
'callback': callback,
'obj': obj
});
return;
}
correctMSG(obj);
const socketMSG = JSON.stringify(obj);
socket.send(socketMSG);
if (typeof callback === 'function') {
eventMSGID[obj.id] = callback;
}
}
function onmessage (raw) {
const msg = JSON.parse(raw.data),
msgFunc = eventMSGID[msg.id],
eventFuncs = eventTo[msg.subject];
if (msg.subject === 'session_init') {
if (connectionID === null) {
connectionID = newUUID();
localStorage.setItem('session', connectionID);
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}
msg.id = connectionID;
sendjson(msg);
render();
return;
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}
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if (msgFunc) {
msgFunc(msg);
delete eventMSGID[msg.id];
render();
return;
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}
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if (typeof eventFuncs === 'object' && eventFuncs.length > 0) {
// eslint-disable-next-line guard-for-in
for (const key in eventFuncs) {
const func = eventFuncs[key];
if (func) {
func(msg);
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}
}
render();
return;
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}
notify.send('warning', `unable to identify message: ${msg.subject}`);
render();
}
function onclose () {
console.log('socket closed by server');
if (connectionEstablished) {
notify.send({
'header': 'Verbindung',
'type': 'warning'
}, 'Verbindung zum Server beendet!');
}
render();
connectionEstablished = false;
// eslint-disable-next-line no-use-before-define
window.setTimeout(connect, RECONNECT_AFTER);
}
function connect () {
socket = new window.WebSocket(config.backend);
socket.onopen = onopen;
socket.onerror = onerror;
socket.onmessage = onmessage;
socket.onclose = onclose;
sendjson({'subject': 'auth_status'});
sendjson({'subject': 'connect'});
}
window.setInterval(() => {
const queryEntry = query.pop();
if (queryEntry) {
sendjson(queryEntry.obj, queryEntry.callback);
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}
}, RETRY_QUERY);
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export function getStatus () {
if (socket) {
return socket.readyState;
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}
return 0;
}
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export function setEvent (to, func) {
eventTo[to] = [func];
}
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export function addEvent (to, func) {
if (typeof eventTo[to] !== 'object') {
eventTo[to] = [];
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}
eventTo[to].push(func);
}
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export function delEvent (to, func) {
if (typeof eventTo[to] === 'object' && eventTo[to].length > 1) {
eventTo[to].pop(func);
} else {
eventTo[to] = [];
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}
}
export function sendnode(node, callback) {
sendjson({'subject':'node-system','body': node}, (msg) => {
if(!msg.body) {
notify.send({
'header': 'Speichern',
'type': 'error',
}, `Einstellungen für '${node.node_id}' wurden nicht gespeichert.`);
}
if (typeof callback === 'function') {
callback(msg);
}
});
}
setEvent('auth_status', (msg) => {
if (msg.body) {
store.isLogin = true;
notify.send({
'header': 'Login',
'type': 'success'
},'Willkommen zurück!');
} else {
store.isLogin = false;
}
render();
});
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addEvent('node-system', (msg) => {
store.updateNode(msg.body, true);
});
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addEvent('node-current', (msg) => {
store.updateNode(msg.body);
});
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addEvent('channels_wifi24', (msg) => {
store.channelsWifi24 = msg.body.sort((a, b) => a - b);
});
addEvent('channels_wifi5', (msg) => {
store.channelsWifi5 = msg.body.sort((a, b) => a - b);
});
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connect();