const express = require('express');
const app = express();
+const session = require('express-session');
+const FileStore = require('session-file-store')(session);
const http = require('http');
const server = http.createServer(app);
const { Server } = require("socket.io");
var state;
+if (!process.env.ZOMBOCOM_SESSION_SECRET) {
+ console.log("Error: Environment variable ZOMBOCOM_SESSION_SECRET not set.");
+ console.log("Please set it to a random, but persistent, value.")
+ process.exit();
+}
+
+const session_middleware = session(
+ {store: new FileStore,
+ secret: process.env.ZOMBOCOM_SESSION_SECRET,
+ resave: false,
+ saveUninitialized: true
+ });
+
+app.use(session_middleware);
+
+// convert a connect middleware to a Socket.IO middleware
+const wrap = middleware => (socket, next) => middleware(socket.request, {}, next);
+
+io.use(wrap(session_middleware));
+
// Load comments at server startup
fs.readFile(state_file, (err, data) => {
if (err)
io.on('connection', (socket) => {
+ // First things first, tell the client their name (if any)
+ if (socket.request.session.name) {
+ socket.emit('inform-name', socket.request.session.name);
+ }
+
// Replay old comments and images to a newly-joining client
+ socket.emit('reset');
+ state.images.forEach((image) => {
+ socket.emit('image', image)
+ });
state.comments.forEach((comment) => {
socket.emit('comment', comment)
});
- state.images.forEach((image) => {
- socket.emit('image', image)
+
+ socket.on('set-name', (name) => {
+ console.log("Received set-name event: " + name);
+ socket.request.session.name = name;
+ socket.request.session.save();
});
// When any client comments, send that to all clients (including sender)
socket.on('comment', (comment) => {
+ comment.name = socket.request.session.name;
io.emit('comment', comment);
state.comments.push(comment);
});
child.stdout.on('data', (data) => {
const images = JSON.parse(data);
images.forEach((image) => {
- console.log(`Emitting image to clients: ${image}`);
+ image.index = state.images.length;
io.emit('image', image);
state.images.push(image);
});