91 lines
2.5 KiB
JavaScript
91 lines
2.5 KiB
JavaScript
require('dotenv').config();
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const express = require('express');
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const bodyParser = require('body-parser');
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let app = express();
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app.use(bodyParser.json());
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app.use(bodyParser.urlencoded({ extended: true }));
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// CORS
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app.use((req, res, next) => {
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res.set('Access-Control-Allow-Origin', '*');
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next();
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});
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let connections = {};
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app.get('/subscribe', (req, res) => {
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if (!req.get("X-User-Claim")) {
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res.sendStatus(401);
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return;
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}
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try {
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const user_claim = JSON.parse(req.get("X-User-Claim"));
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if (!connections[user_claim.userid]) {
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connections[user_claim.userid] = {};
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}
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console.log(`Someone subscribed to ${user_claim.userid}, ${user_claim.clientid}`);
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connections[user_claim.userid][user_claim.clientid] = res;
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res.writeHead(200, {
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'Content-Type': 'text/event-stream',
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'Cache-Control': 'no-cache'
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});
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// So the connection doesn't timeout and die
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let timeoutID = 0;
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const refresh = () => {
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res.write(':\n\n');
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timeoutID = setTimeout(refresh, 25000);
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};
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refresh();
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res.on('close', () => {
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connections[user_claim.userid][user_claim.clientid] = null;
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clearTimeout(timeoutID);
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});
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} catch(e) {
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res.sendStatus(401)
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}
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});
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app.get('/user/:user/devices', (req, res) => {
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if (!connections[req.params.user]) {
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res.status(200).json([]);
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} else {
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res.status(200).json(Object.keys(connections[req.params.user]));
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}
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});
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app.post('/user/:user/device/:device', (req, res) => {
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if(!connections[req.params.user]){
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res.sendStatus(404);
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} else if (!connections[req.params.user][req.params.device]){
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res.sendStatus(404);
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} else if (!req.body.data) {
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res.sendStatus(400);
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} else {
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try {
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const user_claim = JSON.parse(req.get("X-User-Claim"));
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if(!(user_claim.userid && user_claim.clientid)) {
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res.sendStatus(401);
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} else {
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console.log('Posting:');
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req.body.id = `${user_claim.userid}:${user_claim.clientid}`
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console.log(`id: ${req.body.id}\nevent: ${req.body.event}\ndata: ${encodeURI(req.body.data)}\n\n`);
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console.log(`To ${req.params.user}, ${req.params.device}`);
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connections[req.params.user][req.params.device].write(`id: ${req.body.id}\nevent: ${req.body.event}\ndata: ${encodeURI(req.body.data)}\n\n`);
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res.sendStatus(200);
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}
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} catch(e) {
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res.sendStatus(401);
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}
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}
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});
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app.listen(process.env.PORT, (err) => {
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err ? console.error(err) : console.log(`Listening on port ${process.env.PORT}`);
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});
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