allow users to pick their username colour

frontend/create.html

@@ -47,6 +47,6 @@
       </p>
     </div>
 
-    <script type="module" src="/create.mjs?v=5"></script>
+    <script type="module" src="/create.mjs?v=7"></script>
   </body>
 </html>

frontend/create.mjs

@@ -1,4 +1,4 @@
-import { setupCreateSessionForm } from "./lib/create-session.mjs?v=5";
+import { setupCreateSessionForm } from "./lib/create-session.mjs?v=7";
 
 const main = () => {
   setupCreateSessionForm();

frontend/index.html

@@ -28,6 +28,16 @@
           placeholder="Nickname"
           required
         />
+        
+        <label for="join-session-colour">Colour:</label>
+        <input
+          type="text"
+          id="join-session-colour"
+          placeholder="7ed0ff"
+          value="7ed0ff"
+          pattern="[a-fA-F\d]{6}"
+          required
+        />
 
         <label for="join-session-id">Session ID:</label>
         <input
@@ -52,6 +62,6 @@
       </form>
     </div>
 
-    <script type="module" src="/main.mjs?v=6"></script>
+    <script type="module" src="/main.mjs?v=7"></script>
   </body>
 </html>

frontend/lib/chat.mjs

@@ -43,13 +43,12 @@ export const setupChat = async (socket) => {
   document.querySelector("#chatbox-container").style["display"] = "block";
   setupChatboxEvents(socket);
 
-  window.addEventListener("keydown", event => {
+  window.addEventListener("keydown", (event) => {
     try {
       const isSelectionEmpty = window.getSelection().toString().length === 0;
       if (event.code.match(/Key\w/) && isSelectionEmpty)
-        document.querySelector("#chatbox-send > input").focus()
-    } catch (_err) {
-    }
+        document.querySelector("#chatbox-send > input").focus();
+    } catch (_err) {}
   });
 
   fixChatSize();
@@ -101,7 +100,9 @@ const checkDebounce = (event) => {
  */
 const getCurrentTimestamp = () => {
   const t = new Date();
-  return `${matpad(t.getHours())}:${matpad(t.getMinutes())}:${matpad(t.getSeconds())}`;
+  return `${matpad(t.getHours())}:${matpad(t.getMinutes())}:${matpad(
+    t.getSeconds()
+  )}`;
 };
 
 /**
@@ -116,7 +117,7 @@ const matpad = (n) => {
  * @param {string?} user
  * @param {Node?} content
  */
-const printChatMessage = (eventType, user, content) => {
+const printChatMessage = (eventType, user, colour, content) => {
   const chatMessage = document.createElement("div");
   chatMessage.classList.add("chat-message");
   chatMessage.classList.add(eventType);
@@ -124,6 +125,7 @@ const printChatMessage = (eventType, user, content) => {
 
   if (user != null) {
     const userName = document.createElement("strong");
+    userName.style = `color: #${colour}`;
     userName.textContent = user;
     chatMessage.appendChild(userName);
   }
@@ -158,6 +160,7 @@ export const logEventToChat = (event) => {
       printChatMessage(
         "user-join",
         event.user,
+        event.colour,
         document.createTextNode("joined")
       );
       break;
@@ -166,6 +169,7 @@ export const logEventToChat = (event) => {
       printChatMessage(
         "user-leave",
         event.user,
+        event.colour,
         document.createTextNode("left")
       );
       break;
@@ -174,7 +178,12 @@ export const logEventToChat = (event) => {
       const messageContent = document.createElement("span");
       messageContent.classList.add("message-content");
       messageContent.textContent = event.data;
-      printChatMessage("chat-message", event.user, messageContent);
+      printChatMessage(
+        "chat-message",
+        event.user,
+        event.colour,
+        messageContent
+      );
       break;
     }
     case "SetTime": {
@@ -185,7 +194,7 @@ export const logEventToChat = (event) => {
         document.createTextNode(formatTime(event.data))
       );
 
-      printChatMessage("set-time", event.user, messageContent);
+      printChatMessage("set-time", event.user, event.colour, messageContent);
       break;
     }
     case "SetPlaying": {
@@ -200,8 +209,7 @@ export const logEventToChat = (event) => {
         document.createTextNode(formatTime(event.data.time))
       );
 
-      printChatMessage("set-playing", event.user, messageContent);
-
+      printChatMessage("set-playing", event.user, event.colour, messageContent);
       break;
     }
   }

frontend/lib/create-session.mjs

@@ -1,4 +1,4 @@
-import { createSession } from "./watch-session.mjs?v=6";
+import { createSession } from "./watch-session.mjs?v=7";
 
 export const setupCreateSessionForm = () => {
   const form = document.querySelector("#create-session-form");

frontend/lib/join-session.mjs

@@ -1,4 +1,4 @@
-import { joinSession } from "./watch-session.mjs?v=6";
+import { joinSession } from "./watch-session.mjs?v=7";
 
 /**
  * @param {HTMLInputElement} field
@@ -23,6 +23,31 @@ const saveNickname = (field) => {
   }
 };
 
+/**
+ * @param {HTMLInputElement} field
+ */
+const loadColour = (field) => {
+  try {
+    const savedColour = localStorage.getItem("watch-party-colour");
+    if (savedColour != null && savedColour != "") {
+      field.value = savedColour;
+    }
+  } catch (_err) {
+    // Sometimes localStorage is blocked from use
+  }
+};
+
+/**
+ * @param {HTMLInputElement} field
+ */
+const saveColour = (field) => {
+  try {
+    localStorage.setItem("watch-party-colour", field.value);
+  } catch (_err) {
+    // see loadColour
+  }
+};
+
 const displayPostCreateMessage = () => {
   const params = new URLSearchParams(window.location.search);
   if (params.get("created") == "true") {
@@ -36,10 +61,12 @@ export const setupJoinSessionForm = () => {
 
   const form = document.querySelector("#join-session-form");
   const nickname = form.querySelector("#join-session-nickname");
+  const colour = form.querySelector("#join-session-colour");
   const sessionId = form.querySelector("#join-session-id");
   const button = form.querySelector("#join-session-button");
 
   loadNickname(nickname);
+  loadColour(colour);
 
   if (window.location.hash.match(/#[0-9a-f\-]+/)) {
     sessionId.value = window.location.hash.substring(1);
@@ -51,6 +78,7 @@ export const setupJoinSessionForm = () => {
     button.disabled = true;
 
     saveNickname(nickname);
-    joinSession(nickname.value, sessionId.value);
+    saveColour(colour);
+    joinSession(nickname.value, sessionId.value, colour.value);
   });
 };

frontend/lib/watch-session.mjs

@@ -1,15 +1,16 @@
-import { setupVideo } from "./video.mjs?v=5";
-import { setupChat, logEventToChat } from "./chat.mjs?v=6";
+import { setupVideo } from "./video.mjs?v=7";
+import { setupChat, logEventToChat } from "./chat.mjs?v=7";
 
 /**
  * @param {string} sessionId
  * @param {string} nickname
  * @returns {WebSocket}
  */
-const createWebSocket = (sessionId, nickname) => {
+const createWebSocket = (sessionId, nickname, colour) => {
   const wsUrl = new URL(
     `/sess/${sessionId}/subscribe` +
-    `?nickname=${encodeURIComponent(nickname)}`,
+      `?nickname=${encodeURIComponent(nickname)}` +
+      `&colour=${encodeURIComponent(colour)}`,
     window.location.href
   );
   wsUrl.protocol = { "http:": "ws:", "https:": "wss:" }[wsUrl.protocol];
@@ -73,7 +74,7 @@ const setupIncomingEvents = (video, socket) => {
       }
 
       logEventToChat(event);
-    } catch (_err) { }
+    } catch (_err) {}
   });
 };
 
@@ -146,14 +147,14 @@ const setupOutgoingEvents = (video, socket) => {
  * @param {string} nickname
  * @param {string} sessionId
  */
-export const joinSession = async (nickname, sessionId) => {
+export const joinSession = async (nickname, sessionId, colour) => {
   try {
     window.location.hash = sessionId;
 
     const { video_url, subtitle_tracks, current_time_ms, is_playing } =
       await fetch(`/sess/${sessionId}`).then((r) => r.json());
 
-    const socket = createWebSocket(sessionId, nickname);
+    const socket = createWebSocket(sessionId, nickname, colour);
     socket.addEventListener("open", async () => {
       const video = await setupVideo(
         video_url,

frontend/main.mjs

@@ -1,4 +1,4 @@
-import { setupJoinSessionForm } from "./lib/join-session.mjs?v=6";
+import { setupJoinSessionForm } from "./lib/join-session.mjs?v=7";
 
 const main = () => {
   setupJoinSessionForm();

src/events.rs

@@ -15,6 +15,8 @@ pub enum WatchEventData {
 pub struct WatchEvent {
     #[serde(default, skip_serializing_if = "Option::is_none")]
     pub user: Option<String>,
+    #[serde(default, skip_serializing_if = "Option::is_none")]
+    pub colour: Option<String>,
     #[serde(flatten)]
     pub data: WatchEventData,
     #[serde(default)]
@@ -22,9 +24,10 @@ pub struct WatchEvent {
 }
 
 impl WatchEvent {
-    pub fn new(user: String, data: WatchEventData) -> Self {
+    pub fn new(user: String, colour: String, data: WatchEventData) -> Self {
         WatchEvent {
             user: Some(user),
+            colour: Some(colour),
             data,
             reflected: false,
         }

src/main.rs

@@ -26,6 +26,7 @@ struct StartSessionBody {
 #[derive(Deserialize)]
 struct SubscribeQuery {
     nickname: String,
+    colour: String,
 }
 
 #[tokio::main]
@@ -85,7 +86,7 @@ async fn main() {
         .map(
             |requested_session, query: SubscribeQuery, ws: warb::ws::Ws| match requested_session {
                 RequestedSession::Session(uuid, _) => ws
-                    .on_upgrade(move |ws| ws_subscribe(uuid, query.nickname, ws))
+                    .on_upgrade(move |ws| ws_subscribe(uuid, query.nickname, query.colour, ws))
                     .into_response(),
                 RequestedSession::Error(error_response) => error_response.into_response(),
             },

src/viewer_connection.rs

@@ -28,9 +28,10 @@ pub struct ConnectedViewer {
     pub viewer_id: usize,
     pub tx: UnboundedSender<WatchEvent>,
     pub nickname: Option<String>,
+    pub colour: Option<String>,
 }
 
-pub async fn ws_subscribe(session_uuid: Uuid, nickname: String, ws: WebSocket) {
+pub async fn ws_subscribe(session_uuid: Uuid, nickname: String, colour: String, ws: WebSocket) {
     let viewer_id = NEXT_VIEWER_ID.fetch_add(1, Ordering::Relaxed);
     let (mut viewer_ws_tx, mut viewer_ws_rx) = ws.split();
 
@@ -48,6 +49,11 @@ pub async fn ws_subscribe(session_uuid: Uuid, nickname: String, ws: WebSocket) {
         }
     });
 
+    let mut colour = colour;
+    if !colour.len() == 6 || !colour.chars().all(|x| x.is_ascii_hexdigit()) {
+        colour = String::from("7ed0ff");
+    }
+
     CONNECTED_VIEWERS.write().await.insert(
         viewer_id,
         ConnectedViewer {
@@ -55,13 +61,14 @@ pub async fn ws_subscribe(session_uuid: Uuid, nickname: String, ws: WebSocket) {
             session: session_uuid,
             tx,
             nickname: Some(nickname.clone()),
+            colour: Some(colour.clone()),
         },
     );
 
     ws_publish(
         session_uuid,
         None,
-        WatchEvent::new(nickname.clone(), WatchEventData::UserJoin),
+        WatchEvent::new(nickname.clone(), colour.clone(), WatchEventData::UserJoin),
     )
     .await;
 
@@ -84,7 +91,7 @@ pub async fn ws_subscribe(session_uuid: Uuid, nickname: String, ws: WebSocket) {
         ws_publish(
             session_uuid,
             Some(viewer_id),
-            WatchEvent::new(nickname.clone(), event),
+            WatchEvent::new(nickname.clone(), colour.clone(), event),
         )
         .await;
     }
@@ -92,7 +99,7 @@ pub async fn ws_subscribe(session_uuid: Uuid, nickname: String, ws: WebSocket) {
     ws_publish(
         session_uuid,
         None,
-        WatchEvent::new(nickname.clone(), WatchEventData::UserLeave),
+        WatchEvent::new(nickname.clone(), colour.clone(), WatchEventData::UserLeave),
     )
     .await;