X-Git-Url: https://git.cworth.org/git?a=blobdiff_plain;f=index.js;h=cd1911def06ba21b1197a72c9bd6b1d5405b0989;hb=3466003e498d45dab79737107b7ae8f6053a54ae;hp=5e88926ae3e29db5bf7161a44e0deb10eb008d13;hpb=c0e249ecdd9a86a88d15f93969fa5f1adde2f78f;p=zombocom-ai

diff --git a/index.js b/index.js
index 5e88926..cd1911d 100644
--- a/index.js
+++ b/index.js
@@ -1,28 +1,55 @@
 const fs = require('fs');
 
+const util = require('util');
+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");
 const io = new Server(server);
 const port = 2122;
 
+const python_path = '/usr/bin/python3'
+const generate_image_script = '/home/cworth/src/zombocom-ai/generate-image.py'
 const state_file = 'zombocom-state.json'
 
-var comments;
+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)
-        comments = [];
+        state = { images: [], comments: [] };
     else
-        comments = JSON.parse(data);
+        state = JSON.parse(data);
 });
 
 // Save comments when server is shutting down
 function cleanup() {
-    fs.writeFileSync('zombocom-state.json', JSON.stringify(comments), (error) => {
+    fs.writeFileSync('zombocom-state.json', JSON.stringify(state), (error) => {
         if (error)
             throw error;
     })
@@ -38,18 +65,62 @@ process.on('SIGINT', () => {
 });
 
 app.get('/index.html', (req, res) => {
+    if (req.session.views) {
+        req.session.views++;
+    } else {
+        req.session.views = 1;
+    }
     res.sendFile(__dirname + '/index.html');
 });
 
 io.on('connection', (socket) => {
-    // Replay old comments to a newly-joining client
-    comments.forEach((comment) => {
+
+    console.log("Connection from client with " + socket.request.session.views + " views.");
+
+    // Replay old comments and images to a newly-joining client
+    state.comments.forEach((comment) => {
         socket.emit('comment', comment)
     });
+    state.images.forEach((image) => {
+        socket.emit('image', image)
+    });
+
     // When any client comments, send that to all clients (including sender)
     socket.on('comment', (comment) => {
         io.emit('comment', comment);
-        comments.push(comment);
+        state.comments.push(comment);
+    });
+
+    // Generate an image when requested
+    socket.on('generate', (request) => {
+        console.log(`Generating image with code=${request['code']} and prompt=${request['prompt']}`);
+        async function generate_image(code, prompt) {
+            var promise;
+            if (code) {
+                promise = execFile(python_path, [generate_image_script, `--seed=${code}`, prompt])
+            } else {
+                promise = execFile(python_path, [generate_image_script, prompt])
+            }
+            const child = promise.child;
+            child.stdout.on('data', (data) => {
+                const images = JSON.parse(data);
+                images.forEach((image) => {
+                    console.log(`Emitting image to clients: ${image}`);
+                    io.emit('image', image);
+                    state.images.push(image);
+                });
+            });
+            child.stderr.on('data', (data) => {
+                console.log("Error occurred during generate-image: " + data);
+            });
+            try {
+                const { stdout, stderr } = await promise;
+            } catch(e) {
+                console.error(e);
+            }
+            socket.emit('generation-done');
+        }
+        generate_image(request['code'], request['prompt']);
     });
 });