+const fs = require('fs');
+
const express = require('express');
const app = express();
const http = require('http');
const server = http.createServer(app);
+const { Server } = require("socket.io");
+const io = new Server(server);
const port = 2122;
-app.get('/', (req, res) => {
+const state_file = 'zombocom-state.json'
+
+var comments;
+
+// Load comments at server startup
+fs.readFile(state_file, (err, data) => {
+ if (err)
+ comments = [];
+ else
+ comments = JSON.parse(data);
+});
+
+// Save comments when server is shutting down
+function cleanup() {
+ fs.writeFileSync('zombocom-state.json', JSON.stringify(comments), (error) => {
+ if (error)
+ throw error;
+ })
+}
+
+// And connect to that on either clean exit...
+process.on('exit', cleanup);
+
+// ... or on a SIGINT (control-C)
+process.on('SIGINT', () => {
+ cleanup();
+ process.exit();
+});
+
+app.get('/index.html', (req, res) => {
res.sendFile(__dirname + '/index.html');
});
+io.on('connection', (socket) => {
+
+ // Replay old comments to a newly-joining client
+ comments.forEach((comment) => {
+ socket.emit('comment', comment)
+ });
+
+ // When any client comments, send that to all clients (including sender)
+ socket.on('comment', (comment) => {
+ io.emit('comment', comment);
+ comments.push(comment);
+ });
+
+ // Generate an image when requested
+ socket.on('generate', (request) => {
+ console.log(`Generating image with code=${request['code']} and prompt=${request['prompt']}`);
+ });
+});
+
server.listen(port, () => {
console.log(`listening on *:${port}`);
});
-