Clean up useLoadGroupCall

src/room/useLoadGroupCall.js

@@ -0,0 +1,52 @@
+async function fetchGroupCall(
+  client,
+  roomIdOrAlias,
+  viaServers = undefined,
+  timeout = 5000
+) {
+  const { roomId } = await client.joinRoom(roomIdOrAlias, { viaServers });
+
+  return new Promise((resolve, reject) => {
+    let timeoutId;
+
+    function onGroupCallIncoming(groupCall) {
+      if (groupCall && groupCall.room.roomId === roomId) {
+        clearTimeout(timeoutId);
+        client.removeListener("GroupCall.incoming", onGroupCallIncoming);
+        resolve(groupCall);
+      }
+    }
+
+    const groupCall = client.getGroupCallForRoom(roomId);
+
+    if (groupCall) {
+      resolve(groupCall);
+    }
+
+    client.on("GroupCall.incoming", onGroupCallIncoming);
+
+    if (timeout) {
+      timeoutId = setTimeout(() => {
+        client.removeListener("GroupCall.incoming", onGroupCallIncoming);
+        reject(new Error("Fetching group call timed out."));
+      }, timeout);
+    }
+  });
+}
+
+export function useLoadGroupCall(client, roomId, viaServers) {
+  const [state, setState] = useState({
+    loading: true,
+    error: undefined,
+    groupCall: undefined,
+  });
+
+  useEffect(() => {
+    setState({ loading: true });
+    fetchGroupCall(client, roomId, viaServers, 30000)
+      .then((groupCall) => setState({ loading: false, groupCall }))
+      .catch((error) => setState({ loading: false, error }));
+  }, [client, roomId]);
+
+  return state;
+}