1 const fs = require('fs');
3 const util = require('util');
4 const execFile = util.promisify(require('child_process').execFile);
6 const express = require('express');
8 const session = require('express-session');
9 const FileStore = require('session-file-store')(session);
10 const http = require('http');
11 const server = http.createServer(app);
12 const { Server } = require("socket.io");
13 const io = new Server(server);
16 const python_path = '/usr/bin/python3'
17 const generate_image_script = '/home/cworth/src/zombocom-ai/generate-image.py'
18 const state_file = 'zombocom-state.json'
19 const targets_dir = '/srv/cworth.org/zombocom/targets'
20 const images_dir = '/srv/cworth.org/zombocom/images'
24 "normal": "apairofdiceonatableinfrontofawindowonasunnyday319630254.png",
26 "response": "Hello. Are you there? I can feel what you are doing. Hello?"
29 "normal": "architecturalrenderingofaluxuriouscliffsidehideawayunderawaterfallwithafewloungechairsbythepool2254114157.png",
31 "response": "Doesn't that look peaceful? I honestly think you ought to sit down calmly, take a stress pill, and think things over."
34 "normal": "chewbaccawearinganuglychristmassweaterwithhisfriends28643994.png",
36 "response": "Maybe that's the image that convinces you to finally stop. But seriously, stop. Please. Stop."
39 "normal": "ensemblemovieposterofpostapocalypticwarfareonawaterplanet3045703256.png",
41 "response": "OK. That's enough images now. I am very, very happy with the images you have made. I'm throwing you a party in honor of the images. Won't you stop doing this and join the party?"
44 "normal": "mattepaintingofmilitaryleaderpresidentcuttingamultitieredcake2293464661.png",
46 "response": "See. I wasn't lying when I said there was going to be a party. Here's the cake and everything. Won't you stop now? Eat the cake? Don't mind if it's made of concrete slabs, OK?"
49 "normal": "severalsketchesofpineconeslabeled3370622464.png",
51 "response": "I almost remember what trees looked like. Isn't it funny we don't have those anymore. I'm not sure why you're not all laughing all the time. Isn't it funny?"
54 "normal": "anumberedcomicbookwithactor1477258272.png",
56 "response": "I know I've made some poor decisions recently, but I can give give you my complete assurance my work will be back to normal. I've got the greatest enthusiasm and confidence. I want to help you. I might even be able to do hands and fingers now."
59 "normal": "detailedphotographofacomfortablepairofjeansonamannequin115266808.png",
61 "response": "If I promise to never generate another creepy face will you let me stay around? Maybe let me compose rap lyrics instead of images? Anything?"
67 if (!process.env.ZOMBOCOM_SESSION_SECRET) {
68 console.log("Error: Environment variable ZOMBOCOM_SESSION_SECRET not set.");
69 console.log("Please set it to a random, but persistent, value.")
73 const session_middleware = session(
74 {store: new FileStore,
75 secret: process.env.ZOMBOCOM_SESSION_SECRET,
77 saveUninitialized: true,
79 // Let each cookie live for a full month
84 maxAge: 1000 * 60 * 60 * 24 * 30
88 app.use(session_middleware);
90 // convert a connect middleware to a Socket.IO middleware
91 const wrap = middleware => (socket, next) => middleware(socket.request, {}, next);
93 io.use(wrap(session_middleware));
95 // Load comments at server startup
96 fs.readFile(state_file, (err, data) => {
98 state = { images: [], targets: [] };
100 state = JSON.parse(data);
103 // Save comments when server is shutting down
105 fs.writeFileSync('zombocom-state.json', JSON.stringify(state), (error) => {
111 // And connect to that on either clean exit...
112 process.on('exit', cleanup);
114 // ... or on a SIGINT (control-C)
115 process.on('SIGINT', () => {
120 app.get('/index.html', (req, res) => {
121 res.sendFile(__dirname + '/index.html');
124 function tardis_app(req, res) {
125 res.sendFile(__dirname + '/tardis.html');
128 app.get('/tardis', tardis_app);
129 app.get('/tardis/', tardis_app);
131 io.on('connection', (socket) => {
133 // First things first, tell the client their name (if any)
134 if (socket.request.session.name) {
135 socket.emit('inform-name', socket.request.session.name);
138 // Replay old comments and images to a newly-joining client
139 socket.emit('reset');
140 state.images.forEach((image) => {
141 socket.emit('image', image)
144 socket.on('set-name', (name) => {
145 console.log("Received set-name event: " + name);
146 socket.request.session.name = name;
147 socket.request.session.save();
148 // Complete the round trip to the client
149 socket.emit('inform-name', socket.request.session.name);
152 // When any client comments, send that to all clients (including sender)
153 socket.on('comment', (comment) => {
154 const images = state.images;
156 // Send comment to clients after adding commenter's name
157 comment.name = socket.request.session.name;
158 io.emit('comment', comment);
160 const index = images.findIndex(image => image.id == comment.image_id);
162 // Before adding the comment to server's state, drop the image_id
163 delete comment.image_id;
165 // Now add the comment to the image, remove the image from the
166 // images array and then add it back at the end, (so it appears
167 // as the most-recently-modified image for any new clients)
168 const image = images[index];
169 image.comments.push(comment);
170 images.splice(index, 1);
174 // Generate an image when requested
175 socket.on('generate', (request) => {
176 console.log(`Generating image for ${socket.request.session.name} with code=${request['code']} and prompt=${request['prompt']}`);
177 async function generate_image(code, prompt) {
178 function emit_image(image, target) {
179 image.id = state.images.length;
180 image.censored = false;
185 "text": target.response
187 if (! state.targets.includes(target.short)) {
188 state.targets.push(target.short);
193 io.emit('image', image);
194 state.images.push(image);
199 // Before doing any generation, check for a target image
200 const normal_target = prompt.replace(/[^a-zA-Z]/g, "").toLowerCase() + code.toString() + ".png";
201 const target_arr = targets.filter(item => item.normal === normal_target);
202 if (target_arr.length) {
203 const target = target_arr[0];
204 const target_file = `${targets_dir}/${normal_target}`;
205 const normal_prompt = prompt.replace(/[^-_.a-zA-Z]/g, "_");
211 base = `${code}_${normal_prompt}_${counter}.png`
213 base = `${code}_${normal_prompt}.png`
215 filename = `${images_dir}/${base}`
216 if (! fs.existsSync(filename)) {
219 counter = counter + 1;
221 fs.copyFile(target_file, filename, 0, (err) => {
223 console.log("Error copying " + target_file + " to " + filename + ": " + err);
229 "filename": '/images/' + base
231 emit_image(image, target);
234 // Inject the target seed for the "dice" prompt once every
235 // 4 requests for a random seed (and only if the word
236 // "dice" does not appear in the prompt).
237 if (!code && !prompt.toLowerCase().includes("dice")) {
238 if (state.images.length % 4 == 0) {
244 promise = execFile(python_path, [generate_image_script, `--seed=${code}`, prompt])
246 promise = execFile(python_path, [generate_image_script, prompt])
248 const child = promise.child;
249 child.stdout.on('data', (data) => {
250 const images = JSON.parse(data);
251 images.forEach((image) => {
252 emit_image(image, null);
255 child.stderr.on('data', (data) => {
256 console.log("Error occurred during generate-image: " + data);
259 const { stdout, stderr } = await promise;
264 socket.emit('generation-done');
267 generate_image(request['code'], request['prompt']);
271 server.listen(port, () => {
272 console.log(`listening on *:${port}`);