handling disconnection better

just know the whole socket thing will improve with better code that can scale later on...know that ill never be happy with it, but just live with it and make sure that the data flow is understandable and clean

packages/api/sockets/index.ts

@@ -86,7 +86,11 @@ export default function InitializeWs(io: any) {
         ServerRequestChannels.CONNECT_TO_LINE,
         (req: ConnectToLineRequest) => {
           // add this user to the room
-          console.log(`${socket.id} user joined room for line ${req.lineId}`);
+          console.log(
+            `${socket.id} user CONNECTED room for line ${Object.keys(
+              socket.rooms
+            )}`
+          );
 
           const roomName = `connectedLine:${req.lineId}`;
           socket.join(roomName);
@@ -122,13 +126,13 @@ export default function InitializeWs(io: any) {
         ServerRequestChannels.TUNE_INTO_LINE,
         async (req: TuneToLineRequest) => {
           console.log(
-            `${socket.id} user tuned into room for line ${req.lineId}`
+            `${socket.id} user TUNED into room for line ${req.lineId}`
           );
 
           const roomName = `tunedLine:${req.lineId}`;
           socket.join(roomName);
 
-          console.log(`${socket.id} now in rooms ${socket.rooms}`);
+          console.log(`${socket.id} now in rooms ${Object.keys(socket.rooms)}`);
 
           // persist tuning in if user is toggle tuning in
           if (req.keepTunedIn) {
@@ -264,6 +268,41 @@ export default function InitializeWs(io: any) {
         }
       );
 
+      // tell all connected people that I am disconnecting
+      // tell tuned in folks that I am leaving the room
+      // tell the tuned in folks the new list of
+      socket.on("disconnecting", (reason: any) => {
+        console.log(reason);
+
+        console.log(socket.rooms);
+        for (const roomName of socket.rooms) {
+          if (roomName !== socket.id) {
+            const lineId = roomName.split(":")[1];
+            if (roomName.includes("tunedLine")) {
+              // get fresh list of tuned in folks without me
+              const clientUserIdsInRoom = [
+                ...(io.sockets.adapter.rooms.get(roomName) ?? []),
+              ].map(
+                (otherUserSocketId: string) =>
+                  socketIdsToUserIds[otherUserSocketId]
+              );
+
+              io.in(roomName).emit(
+                ServerResponseChannels.SOMEONE_UNTUNED_FROM_LINE,
+                new SomeoneUntunedFromLineResponse(
+                  lineId,
+                  userInfo.userId,
+                  clientUserIdsInRoom
+                )
+              );
+            } else if (roomName.includes("connectedLine")) {
+              //TODO: p3: client doesn't really to know right now in our flow as this list is not really used
+              // io.in(roomName).emit(ServerResponseChannels.SOMEONE_UNTUNED_FROM_LINE, new SomeoneDisconnected(lineId, userInfo.userId, clientUserIdsInRoom));
+            }
+          }
+        }
+      });
+
       // ==== DISCONNECT ====
       socket.on("disconnect", () => {
         delete socketIdsToUserIds[socket.id];