Add support for leave call

src/ConferenceCallManager.js

@@ -140,7 +140,6 @@ export class ConferenceCallManager extends EventEmitter {
       feed: null,
       call: null,
       muted: true,
-      calls: [],
     };
     this.participants = [this.localParticipant];
 
@@ -284,7 +283,7 @@ export class ConferenceCallManager extends EventEmitter {
 
   _addCall(call, userId) {
     const existingCall = this.participants.find(
-      (p) => p.call && p.call.callId === call.callId
+      (p) => !p.local && p.call && p.call.callId === call.callId
     );
 
     if (existingCall) {
@@ -299,7 +298,6 @@ export class ConferenceCallManager extends EventEmitter {
       userId,
       feed: null,
       call,
-      calls: [call],
     });
 
     console.debug("_addCall", `Added new participant ${userId}`);
@@ -324,12 +322,15 @@ export class ConferenceCallManager extends EventEmitter {
     let participantsChanged = false;
 
     if (!this.localParticipant.feed && localFeeds.length > 0) {
+      this.localParticipant.call = call;
       this.localParticipant.feed = localFeeds[0];
       participantsChanged = true;
     }
 
     const remoteFeeds = call.getRemoteFeeds();
-    const remoteParticipant = this.participants.find((p) => p.call === call);
+    const remoteParticipant = this.participants.find(
+      (p) => !p.local && p.call === call
+    );
 
     if (remoteFeeds.length > 0 && remoteParticipant.feed !== remoteFeeds[0]) {
       remoteParticipant.feed = remoteFeeds[0];
@@ -349,7 +350,7 @@ export class ConferenceCallManager extends EventEmitter {
     }
 
     const participantIndex = this.participants.findIndex(
-      (p) => p.call === call
+      (p) => !p.local && p.call === call
     );
 
     if (participantIndex === -1) {
@@ -358,6 +359,27 @@ export class ConferenceCallManager extends EventEmitter {
 
     this.participants.splice(participantIndex, 1);
 
+    if (this.localParticipant.call === call) {
+      const newLocalCallParticipant = this.participants.find(
+        (p) => !p.local && p.call
+      );
+
+      if (newLocalCallParticipant) {
+        const localFeeds = call.getLocalFeeds();
+
+        if (localFeeds.length > 0) {
+          this.localParticipant.call = call;
+          this.localParticipant.feed = localFeeds[0];
+        } else {
+          this.localParticipant.call = null;
+          this.localParticipant.feed = null;
+        }
+      } else {
+        this.localParticipant.call = null;
+        this.localParticipant.feed = null;
+      }
+    }
+
     this.emit("participants_changed");
   };
 
@@ -367,10 +389,11 @@ export class ConferenceCallManager extends EventEmitter {
       `Call ${call.callId} replaced with ${newCall.callId}`
     );
 
-    const remoteParticipant = this.participants.find((p) => p.call === call);
+    const remoteParticipant = this.participants.find(
+      (p) => !p.local && p.call === call
+    );
 
     remoteParticipant.call = newCall;
-    remoteParticipant.calls.push(newCall);
 
     newCall.on("feeds_changed", () => this._onCallFeedsChanged(newCall));
     newCall.on("hangup", () => this._onCallHangup(newCall));
@@ -381,4 +404,18 @@ export class ConferenceCallManager extends EventEmitter {
 
     this.emit("participants_changed");
   };
+
+  leaveCall() {
+    for (const participant of this.participants) {
+      if (!participant.local && participant.call) {
+        participant.call.hangup("user_hangup", false);
+      }
+    }
+
+    this.joined = false;
+    this.participants = [this.localParticipant];
+    this.localParticipant.feed = null;
+    this.localParticipant.call = null;
+    this.emit("participants_changed");
+  }
 }

src/ConferenceCallManagerHooks.js

@@ -201,7 +201,17 @@ export function useVideoRoom(manager, roomId, timeout = 5000) {
     };
   }, [manager, roomId]);
 
-  return { loading, joined, room, participants, error, joinCall };
+  const leaveCall = useCallback(() => {
+    manager.leaveCall();
+
+    setState((prevState) => ({
+      ...prevState,
+      participants: manager.participants,
+      joined: false,
+    }));
+  }, [manager]);
+
+  return { loading, joined, room, participants, error, joinCall, leaveCall };
 }
 
 export function useRooms(manager) {

src/Room.jsx

@@ -21,10 +21,8 @@ import { useVideoRoom } from "./ConferenceCallManagerHooks";
 
 export function Room({ manager }) {
   const { roomId } = useParams();
-  const { loading, joined, room, participants, error, joinCall } = useVideoRoom(
-    manager,
-    roomId
-  );
+  const { loading, joined, room, participants, error, joinCall, leaveCall } =
+    useVideoRoom(manager, roomId);
 
   return (
     <div className={styles.room}>
@@ -61,34 +59,43 @@ export function Room({ manager }) {
       {!loading && room && joined && participants.length > 0 && (
         <div className={styles.roomContainer}>
           {participants.map((participant) => (
-            <Participant key={participant.userId} participant={participant} />
+            <Participant key={participant.userId} {...participant} />
           ))}
         </div>
       )}
+      {!loading && room && joined && (
+        <div className={styles.footer}>
+          <button className={styles.leaveButton} onClick={leaveCall}>
+            Leave Call
+          </button>
+        </div>
+      )}
     </div>
   );
 }
 
-function Participant({ participant }) {
+function Participant({ userId, feed, muted, local }) {
   const videoRef = useRef();
 
   useEffect(() => {
-    if (participant.feed) {
-      if (participant.muted) {
+    if (feed) {
+      if (muted) {
         videoRef.current.muted = true;
       }
 
-      videoRef.current.srcObject = participant.feed.stream;
+      videoRef.current.srcObject = feed.stream;
       videoRef.current.play();
+    } else {
+      videoRef.current.srcObject = null;
     }
-  }, [participant.feed]);
+  }, [feed]);
 
   return (
     <div className={styles.participant}>
       <video ref={videoRef}></video>
       <div className={styles.participantLabel}>
         <p>
-          {participant.userId} {participant.local && "(You)"}
+          {userId} {local && "(You)"}
         </p>
       </div>
     </div>

src/Room.module.css

@@ -107,6 +107,14 @@ limitations under the License.
   background: rgba(0, 0, 0, 0.2);
 }
 
+.footer {
+  position: relative;
+  display: flex;
+  justify-content: center;
+  align-items: center;
+  height: 64px;
+}
+
 @media(min-width: 800px) {
   .roomContainer {
     flex-direction: row;