Hide images with a censored attribute

[zombocom-ai] / index.js

diff --git a/index.js b/index.js
index 8dadeabec11666785f14926cc567caf15c58033f..6f2a62597395c90c1a2e48884edaf3b65a5ec028 100644 (file)
--- a/index.js
+++ b/index.js
@@ -5,6 +5,8 @@ const execFile = util.promisify(require('child_process').execFile);
 
 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");
@@ -17,10 +19,30 @@ const state_file = 'zombocom-state.json'
 
 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)
-        state = { images: [], comments: [] };
+        state = { images: [] };
     else
         state = JSON.parse(data);
 });
@@ -48,22 +70,62 @@ app.get('/index.html', (req, res) => {
 
 io.on('connection', (socket) => {
 
-    // Replay old comments to a newly-joining client
-    state.comments.forEach((comment) => {
-        socket.emit('comment', comment)
+    // 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)
+    });
+
+    socket.on('set-name', (name) => {
+        console.log("Received set-name event: " + name);
+        socket.request.session.name = name;
+        socket.request.session.save();
+       // Complete the round trip to the client
+       socket.emit('inform-name', socket.request.session.name);
     });
 
     // When any client comments, send that to all clients (including sender)
     socket.on('comment', (comment) => {
+        const images = state.images;
+
+        // Send comment to clients after adding commenter's name
+        comment.name = socket.request.session.name;
         io.emit('comment', comment);
-        state.comments.push(comment);
+
+        const index = images.findIndex(image => image.id == comment.image_id);
+
+        // Before adding the comment to server's state, drop the image_id
+        delete comment.image_id;
+
+        // Now add the comment to the image, remove the image from the
+        // images array and then add it back at the end, (so it appears
+        // as the most-recently-modified image for any new clients)
+        const image = images[index];
+        image.comments.push(comment);
+        images.splice(index, 1);
+        images.push(image);
     });
 
     // Generate an image when requested
     socket.on('generate', (request) => {
-        console.log(`Generating image with code=${request['code']} and prompt=${request['prompt']}`);
+        console.log(`Generating image for ${socket.request.session.name} with code=${request['code']} and prompt=${request['prompt']}`);
         async function generate_image(code, prompt) {
             var promise;
+
+            // Inject the target seed for the "dice" prompt once every
+            // 6 requests for a random seed (and only if the word
+            // "dice" does not appear in the prompt).
+            if (!code && !prompt.toLowerCase().includes("dice")) {
+                if (state.images.length % 6 == 0) {
+                    code = 319630254;
+                }
+            }
+
             if (code) {
                 promise = execFile(python_path, [generate_image_script, `--seed=${code}`, prompt])
             } else {
@@ -73,7 +135,9 @@ io.on('connection', (socket) => {
             child.stdout.on('data', (data) => {
                 const images = JSON.parse(data);
                 images.forEach((image) => {
-                    console.log(`Emitting image to clients: ${image}`);
+                    image.id = state.images.length;
+                    image.censored = false;
+                    image.comments = [];
                     io.emit('image', image);
                     state.images.push(image);
                 });
@@ -81,7 +145,12 @@ io.on('connection', (socket) => {
             child.stderr.on('data', (data) => {
                 console.log("Error occurred during generate-image: " + data);
             });
-            const { stdout, stderr } = await promise;
+            try {
+                const { stdout, stderr } = await promise;
+            } catch(e) {
+                console.error(e);
+            }
+            socket.emit('generation-done');
         }
         generate_image(request['code'], request['prompt']);
     });