cubstart · tiffanylamm · Mar 14, 2025 · Mar 17, 2025 · Apr 4, 2025 · Apr 11, 2025
diff --git a/week3/tiffany_lam/script.js b/week3/tiffany_lam/script.js
@@ -23,6 +23,5 @@ function changeImage() {
     } else {
         image_link = full_cookie
     }
-    // document.getElementById("cookie_image").src="/week3/tiffany_lam/cookie.jpeg"
 }
 
diff --git a/week6/tiffany_lam/index.html b/week6/tiffany_lam/index.html
@@ -0,0 +1,67 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <title>Socket.IO chat</title>
+    <style>
+      body { margin: 0; padding-bottom: 3rem; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; }
+
+      #form { background: rgba(0, 0, 0, 0.15); padding: 0.25rem; position: fixed; bottom: 0; left: 0; right: 0; display: flex; height: 3rem; box-sizing: border-box; backdrop-filter: blur(10px); }
+      #input { border: none; padding: 0 1rem; flex-grow: 1; border-radius: 2rem; margin: 0.25rem; }
+      #input:focus { outline: none; }
+      #form > button { background: #333; border: none; padding: 0 1rem; margin: 0.25rem; border-radius: 3px; outline: none; color: #fff; }
+
+      #messages { list-style-type: none; margin: 0; padding: 0; }
+      #messages > li { padding: 0.5rem 1rem; }
+      #messages > li:nth-child(odd) { background: #efefef; }
+    </style>
+  </head>
+  <body>
+    <ul id="messages"></ul>
+    <form id="form" action="">
+      <input id="input" autocomplete="off" /><button>Send</button>
+    </form>
+  </body>
+  <script src="/socket.io/socket.io.js"></script>
+  <script>
+    var socket = io();
+
+    var messages = document.getElementById('messages');
+    var form = document.getElementById('form');
+    var input = document.getElementById('input');
+
+    // when user presses send button, emit message to all users
+    form.addEventListener('submit', function(e) {
+      e.preventDefault();
+      if (input.value) {
+        socket.emit('chat message', input.value);
+        input.value = '';
+      }
+    });
+
+    // msg when new user joins
+    socket.on('new user joined', function() {
+      var item = document.createElement('li');
+      item.textContent = "A User has connected";
+      messages.appendChild(item);
+      window.scrollTo(0, document.body.scrollHeight);
+    });
+
+    // when receiving messages
+    socket.on('chat message', function(msg) {
+      var item = document.createElement('li');
+      item.textContent = msg;
+      messages.appendChild(item);
+      window.scrollTo(0, document.body.scrollHeight);
+    });
+
+    // when user first loads up page, load saved msgs from db
+    socket.on('display msgs', function(msgs) {
+      msgs.forEach(element => {
+        var item = document.createElement('li');
+        item.textContent = element;
+        messages.appendChild(item);
+      });
+      window.scrollTo(0, document.body.scrollHeight);
+    });
+  </script>
+</html
diff --git a/week6/tiffany_lam/index.js b/week6/tiffany_lam/index.js
@@ -0,0 +1,56 @@
+const express = require('express');
+const app = express();
+const http = require('http');
+const server = http.createServer(app);
+const { Server } = require("socket.io");
+const mongoose = require("mongoose");
+
+
+const Schema = mongoose.Schema;
+
+const messageSchema = new Schema({
+  content: {type: String}
+});
+
+const messageModel = mongoose.model("Message", messageSchema);
+
+// initialize a new instance of socket.io by passing the server (the HTTP server) object
+const io = new Server(server);
+
+app.get('/', (req, res) => {
+  res.sendFile(__dirname + '/index.html');
+});
+
+app.get('/messages', async function(req, res){
+  res.json(await messageModel.find());
+});
+
+// listen on the connection/disconnection event for incoming sockets
+io.on ('connection', async (socket) => {
+  io.emit('new user joined');
+
+  // display saved msgs from db
+  const msgs = await messageModel.find(); 
+  const contents = msgs.map(msg => msg.content); 
+  socket.emit('display msgs', contents);
+
+  socket.on('disconnect', () => {
+    console.log('user disconnected');
+  });
+
+  socket.on('chat message', (msg) => {
+    // Save to MongoDB
+    const message = new messageModel();
+    message.content = msg;
+    message.save().then(m => {
+      io.emit('chat message', msg);
+    })
+  });
+});
+
+server.listen(3000, async () => {
+  await mongoose.connect("mongodb+srv://tiffanylam:9HcXK8bi3yYw04cM@cluster0.njgvl.mongodb.net/?retryWrites=true&w=majority&appName=Cluster0").catch(e => {
+    console.log(e)
+  });
+  console.log('listening on *:3000');
+});
diff --git a/week6/tiffany_lam/node_modules/.package-lock.json b/week6/tiffany_lam/node_modules/.package-lock.json
diff --git a/week6/tiffany_lam/node_modules/@socket.io/component-emitter/LICENSE b/week6/tiffany_lam/node_modules/@socket.io/component-emitter/LICENSE