Prepare for adding the chat box

frontend/index.html

@@ -16,6 +16,14 @@
       <form id="join-session-form">
         <h2>Join a session</h2>
 
+        <label for="nickname">Nickname:</label>
+        <input
+          type="text"
+          id="join-session-nickname"
+          placeholder="Nickname"
+          required
+        />
+
         <label for="session-id">Session ID:</label>
         <input
           type="text"
@@ -31,6 +39,9 @@
       </p>
     </div>
 
+    <div id="video-container"></div>
+    <div id="chatbox-container"></div>
+
     <script src="/main.js"></script>
   </body>
 </html>

frontend/main.js

@@ -3,8 +3,6 @@
  * @param {{name: string, url: string}[]} subtitles
  */
 const createVideoElement = (videoUrl, subtitles) => {
-  document.querySelector("#pre-join-controls").style["display"] = "none";
-
   const video = document.createElement("video");
   video.controls = true;
   video.autoplay = false;
@@ -35,6 +33,19 @@ const createVideoElement = (videoUrl, subtitles) => {
 let outgoingDebounce = false;
 let outgoingDebounceCallbackId = null;
 
+const setDebounce = () => {
+  outgoingDebounce = true;
+
+  if (outgoingDebounceCallbackId) {
+    cancelIdleCallback(outgoingDebounceCallbackId);
+    outgoingDebounceCallbackId = null;
+  }
+
+  outgoingDebounceCallbackId = setTimeout(() => {
+    outgoingDebounce = false;
+  }, 500);
+}
+
 /**
  * @param {WebSocket} socket
  * @param {HTMLVideoElement} video
@@ -53,10 +64,10 @@ const setupSocketEvents = (socket, video) => {
       const event = JSON.parse(messageEvent.data);
       console.log(event);
 
-      outgoingDebounce = true;
-
       switch (event.op) {
         case "SetPlaying":
+          setDebounce();
+
           if (event.data.playing) {
             await video.play();
           } else {
@@ -67,21 +78,15 @@ const setupSocketEvents = (socket, video) => {
 
           break;
         case "SetTime":
+          setDebounce();
           setVideoTime(event.data);
 
           break;
+
+        // TODO: UserJoin, UserLeave, ChatMessage
       }
     } catch (_err) {
     }
-
-    if (outgoingDebounceCallbackId) {
-      cancelIdleCallback(outgoingDebounceCallbackId);
-      outgoingDebounceCallbackId = null;
-    }
-
-    outgoingDebounceCallbackId = setTimeout(() => {
-      outgoingDebounce = false;
-    }, 500);
   });
 }
 
@@ -148,8 +153,9 @@ const setupVideoEvents = (sessionId, video, socket) => {
  * @param {WebSocket} socket
  */
 const setupVideo = async (sessionId, videoUrl, subtitles, currentTime, playing, socket) => {
+  document.querySelector("#pre-join-controls").style["display"] = "none";
   const video = createVideoElement(videoUrl, subtitles);
-  document.body.appendChild(video);
+  document.querySelector("#video-container").appendChild(video);
 
   video.currentTime = (currentTime / 1000.0);
 
@@ -167,8 +173,20 @@ const setupVideo = async (sessionId, videoUrl, subtitles, currentTime, playing,
   setupVideoEvents(sessionId, video, socket);
 }
 
-/** @param {string} sessionId */
-const joinSession = async (sessionId) => {
+/**
+ * @param {string} sessionId
+ * @param {WebSocket} socket
+ */
+const setupChat = async (sessionId, socket) => {
+  document.querySelector("#chatbox-container").style["display"] = "initial";
+  // TODO
+}
+
+/** 
+ * @param {string} nickname
+ * @param {string} sessionId
+ */
+const joinSession = async (nickname, sessionId) => {
   try {
     window.location.hash = sessionId;
 
@@ -177,11 +195,14 @@ const joinSession = async (sessionId) => {
       current_time_ms, is_playing
     } = await fetch(`/sess/${sessionId}`).then(r => r.json());
 
-    const wsUrl = new URL(`/sess/${sessionId}/subscribe`, window.location.href);
+    const wsUrl = new URL(`/sess/${sessionId}/subscribe?nickname=${encodeURIComponent(nickname)}`, window.location.href);
     wsUrl.protocol = { "http:": "ws:", "https:": "wss:" }[wsUrl.protocol];
     const socket = new WebSocket(wsUrl.toString());
 
+    socket.addEventListener("open", () => {
       setupVideo(sessionId, video_url, subtitle_tracks, current_time_ms, is_playing, socket);
+      setupChat(sessionId, socket);
+    });
   } catch (err) {
     // TODO: Show an error on the screen
     console.error(err);
@@ -189,11 +210,16 @@ const joinSession = async (sessionId) => {
 }
 
 const main = () => {
+  document.querySelector("#join-session-nickname").value = localStorage.getItem("watch-party-nickname");
+
   document.querySelector("#join-session-form").addEventListener("submit", event => {
     event.preventDefault();
 
+    const nickname = document.querySelector("#join-session-nickname").value;
     const sessionId = document.querySelector("#join-session-id").value;
-    joinSession(sessionId);
+
+    localStorage.setItem("watch-party-nickname", nickname);
+    joinSession(nickname, sessionId);
   });
 
   if (window.location.hash.match(/#[0-9a-f\-]+/)) {

frontend/styles.css

@@ -9,6 +9,15 @@ html {
   color: var(--fg);
   font-size: 1.125rem;
   font-family: sans-serif;
+
+  overflow-y: scroll;
+  scrollbar-width: none;
+  -ms-overflow-style: none;
+}
+
+::-webkit-scrollbar {
+  width: 0;
+  background: transparent;
 }
 
 html,
@@ -17,8 +26,13 @@ body {
 }
 
 video {
+  display: block;
+
   width: 100vw;
   height: auto;
+
+  max-width: auto;
+  max-height: 100vh;
 }
 
 a {
@@ -99,3 +113,7 @@ button.small-button {
 #join-session-form {
   margin-bottom: 4em;
 }
+
+#chatbox-container {
+  display: none;
+}

src/events.rs

@@ -3,6 +3,17 @@ use serde::{Deserialize, Serialize};
 #[derive(Clone, Serialize, Deserialize)]
 #[serde(tag = "op", content = "data")]
 pub enum WatchEvent {
-    SetPlaying { playing: bool, time: u64 },
+    SetPlaying {
+        playing: bool,
+        time: u64,
+    },
     SetTime(u64),
+
+    UserJoin(String),
+    UserLeave(String),
+    ChatMessage {
+        #[serde(default = "String::new")]
+        user: String,
+        message: String,
+    },
 }

src/main.rs

@@ -19,9 +19,14 @@ use crate::{
 
 #[derive(Deserialize)]
 struct StartSessionBody {
-    pub video_url: String,
+    video_url: String,
     #[serde(default = "Vec::new")]
-    pub subtitle_tracks: Vec<SubtitleTrack>,
+    subtitle_tracks: Vec<SubtitleTrack>,
+}
+
+#[derive(Deserialize)]
+struct SubscribeQuery {
+    nickname: String,
 }
 
 #[tokio::main]
@@ -112,12 +117,13 @@ async fn main() {
         );
 
     let ws_subscribe_route = get_running_session
-        .and(warp::path!("subscribe"))
-        .and(warp::ws())
+        .and(warb::path!("subscribe"))
+        .and(warb::query())
+        .and(warb::ws())
         .map(
-            |requested_session, ws: warb::ws::Ws| match requested_session {
+            |requested_session, query: SubscribeQuery, ws: warb::ws::Ws| match requested_session {
                 RequestedSession::Session(uuid, _) => ws
-                    .on_upgrade(move |ws| ws_subscribe(uuid, ws))
+                    .on_upgrade(move |ws| ws_subscribe(uuid, query.nickname, ws))
                     .into_response(),
                 RequestedSession::Error(error_response) => error_response.into_response(),
             },

src/viewer_connection.rs

@@ -29,7 +29,7 @@ pub struct ConnectedViewer {
     pub tx: UnboundedSender<WatchEvent>,
 }
 
-pub async fn ws_subscribe(session_uuid: Uuid, ws: WebSocket) {
+pub async fn ws_subscribe(session_uuid: Uuid, nickname: 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();
 
@@ -56,8 +56,10 @@ pub async fn ws_subscribe(session_uuid: Uuid, ws: WebSocket) {
         },
     );
 
+    ws_publish(session_uuid, None, WatchEvent::UserJoin(nickname.clone())).await;
+
     while let Some(Ok(message)) = viewer_ws_rx.next().await {
-        let event: WatchEvent = match message
+        let mut event: WatchEvent = match message
             .to_str()
             .ok()
             .and_then(|s| serde_json::from_str(s).ok())
@@ -66,6 +68,23 @@ pub async fn ws_subscribe(session_uuid: Uuid, ws: WebSocket) {
             None => continue,
         };
 
+        // Make sure people don't spoof their nicknames to pretend to be others
+        // If a nickname change is required, I guess reconnect idk
+        if let WatchEvent::ChatMessage { user: _, message } = event {
+            event = WatchEvent::ChatMessage {
+                user: nickname.clone(),
+                message,
+            };
+
+            // Don't pass through the viewer_id because we want the chat message
+            // to be reflected to the user.
+            ws_publish(session_uuid, None, event).await;
+
+            // We don't need to handle() chat messages,
+            // and we are already publishing them ourselves.
+            continue;
+        }
+
         handle_watch_event(
             session_uuid,
             &mut get_session(session_uuid).unwrap(),
@@ -75,6 +94,8 @@ pub async fn ws_subscribe(session_uuid: Uuid, ws: WebSocket) {
         ws_publish(session_uuid, Some(viewer_id), event).await;
     }
 
+    ws_publish(session_uuid, None, WatchEvent::UserLeave(nickname.clone())).await;
+
     CONNECTED_VIEWERS.write().await.remove(&viewer_id);
 }
 

src/watch_session.rs

@@ -84,6 +84,8 @@ pub fn handle_watch_event(uuid: Uuid, watch_session: &mut WatchSession, event: W
         WatchEvent::SetTime(time) => {
             watch_session.set_time_ms(time);
         }
+
+        _ => {}
     };
 
     let _ = SESSIONS.lock().unwrap().insert(uuid, watch_session.clone());