6 files changed, 114 insertions, 31 deletions
diff --git a/Year_3/Web/chat-socket-io/assets/chat.js b/Year_3/Web/chat-socket-io/assets/chat.js
new file mode 100644
index 0000000..2dfdd62
--- /dev/null
+++ b/Year_3/Web/chat-socket-io/assets/chat.js
@@ -0,0 +1,37 @@
+var form = document.getElementById("form");
+var input = document.getElementById("input");
+const messages = document.getElementById("messages");
+
+form.addEventListener("submit", function(e) {
+    e.preventDefault();
+    let value = input.value;
+    if (value) {
+        if (value[0] == "/") {
+            let command = value.split(" ");
+            if (command.length == 2 && command[0] == "/user") {
+                socket.emit("set user", command[1]);
+            } else {
+                socket.emit("handle error", "Command not found");
+            }
+        } else {
+            socket.emit("chat message", value);
+        }
+        input.value = "";
+    }
+});
+socket.on("chat message", (msg) => {
+    var item = document.createElement("li");
+    item.textContent = msg;
+    messages.appendChild(item);
+    window.scrollTo(0, document.body.scrollHeight);
+});
+
+socket.on("handle error", (msg) => {
+    alert(msg);
+});
+
+socket.on("set user", (username) => {
+    const userBox = document.getElementById("userBox");
+    userBox.innerHTML = username;
+    alert("Username changed");
+});
diff --git a/Year_3/Web/chat-socket-io/assets/style.css b/Year_3/Web/chat-socket-io/assets/style.css
new file mode 100644
index 0000000..85f7376
--- /dev/null
+++ b/Year_3/Web/chat-socket-io/assets/style.css
@@ -0,0 +1,50 @@
+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;
+}
diff --git a/Year_3/Web/chat-socket-io/chat.js b/Year_3/Web/chat-socket-io/chat.js
deleted file mode 100644
index 8aa1b4d..0000000
--- a/Year_3/Web/chat-socket-io/chat.js
+++ /dev/null
@@ -1,16 +0,0 @@
-var form = document.getElementById("form");
-var input = document.getElementById("input");
-
-form.addEventListener("submit", function(e) {
-    e.preventDefault();
-    if (input.value) {
-        socket.emit("chat message", input.value);
-        input.value = "";
-    }
-});
-socket.on("chat message", (msg) => {
-    var item = document.createElement("li");
-    item.textContent = msg;
-    messages.appendChild(item);
-    window.scrollTo(0, document.body.scrollHeight);
-});
diff --git a/Year_3/Web/chat-socket-io/index.js b/Year_3/Web/chat-socket-io/index.js
index 6224c50..b59cb72 100644
--- a/Year_3/Web/chat-socket-io/index.js
+++ b/Year_3/Web/chat-socket-io/index.js
@@ -13,19 +13,34 @@ app.get("/", (req, res) => {
     res.render("index");
 });
 
-app.get("/chat.js", (req, res) => {
-    res.sendFile(__dirname + "/chat.js");
+app.use(express.static("assets"));
+
+app.get("*", (req, res) => {
+    res.render("404");
 });
 
+const users = {};
+
 io.on("connection", (socket) => {
-    console.log("A user is connected");
+    console.log("A user is connected: " + socket.id);
+    io.to(socket.id).emit("set user", socket.id);
+    users[socket.id] = socket.id;
 
     socket.on("disconnect", () => {
         console.log("A user is disconnected");
     });
 
     socket.on("chat message", (message) => {
-        io.emit("chat message", message);
+        socket.broadcast.emit("chat message", message);
+    });
+
+    socket.on("handle error", (msg) => {
+        io.emit("handle error", msg);
+    });
+
+    socket.on("set user", (username) => {
+        users[socket.id] = username;
+        io.to(socket.id).emit("set user", username);
     });
 });
 
diff --git a/Year_3/Web/chat-socket-io/views/404.pug b/Year_3/Web/chat-socket-io/views/404.pug
new file mode 100644
index 0000000..b131902
--- /dev/null
+++ b/Year_3/Web/chat-socket-io/views/404.pug
@@ -0,0 +1,6 @@
+doctype
+html
+    head
+        title 404 error
+    body
+        h1 This page does not exist
diff --git a/Year_3/Web/chat-socket-io/views/index.pug b/Year_3/Web/chat-socket-io/views/index.pug
index 484d151..1133e0a 100644
--- a/Year_3/Web/chat-socket-io/views/index.pug
+++ b/Year_3/Web/chat-socket-io/views/index.pug
@@ -2,23 +2,14 @@ doctype
 html
   head
     title Chat
-    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; }
+    link(rel="stylesheet" href="./style.css")
     script(src="/socket.io/socket.io.js")
     script
       | var socket = io()
   body
     ul#messages
     form#form(action="")
+      #userBox
       input#input(autocomplete="off")
       button Send