From 4be82cd4722db5ee2e5bfd5b675732adc5df288b Mon Sep 17 00:00:00 2001
From: Bruno Windels <274386+bwindels@users.noreply.github.com>
Date: Thu, 17 Mar 2022 13:07:55 +0100
Subject: [PATCH] WIP on UI

---
 src/domain/session/room/CallViewModel.ts     | 37 +++++++++++++----
 src/domain/session/room/RoomViewModel.js     |  9 +++-
 src/platform/web/ui/session/room/CallView.ts | 43 ++++++++++++++++++++
 src/platform/web/ui/session/room/RoomView.js |  5 ++-
 4 files changed, 81 insertions(+), 13 deletions(-)
 create mode 100644 src/platform/web/ui/session/room/CallView.ts

diff --git a/src/domain/session/room/CallViewModel.ts b/src/domain/session/room/CallViewModel.ts
index 52f04d32..0c5f28d2 100644
--- a/src/domain/session/room/CallViewModel.ts
+++ b/src/domain/session/room/CallViewModel.ts
@@ -1,6 +1,5 @@
 /*
-Copyright 2020 Bruno Windels <bruno@windels.cloud>
-Copyright 2020 The Matrix.org Foundation C.I.C.
+Copyright 2022 The Matrix.org Foundation C.I.C.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -15,20 +14,40 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-import {ViewModel} from "../../ViewModel";
+import {ViewModel, Options as BaseOptions} from "../../ViewModel";
 import type {GroupCall} from "../../../matrix/calls/group/GroupCall";
+import type {Member} from "../../../matrix/calls/group/Member";
+import type {BaseObservableList} from "../../../observable/list/BaseObservableList";
+import type {Track} from "../../../platform/types/MediaDevices";
 
-export class CallViewModel extends ViewModel {
+type Options = BaseOptions & {call: GroupCall};
 
-    private call: GroupCall;
+export class CallViewModel extends ViewModel<Options> {
+   
+    public readonly memberViewModels: BaseObservableList<CallMemberViewModel>;
 
-    constructor(options) {
+    constructor(options: Options) {
         super(options);
-        const {call} = options;
-        this.call = call;
+        this.memberViewModels = this.getOption("call").members
+            .mapValues(member => new CallMemberViewModel(this.childOptions({member})))
+            .sortValues((a, b) => {
+                
+            });
     }
 
     get name(): string {
-        return this.call.name;
+        return this.getOption("call").name;
+    }
+
+    get localTracks(): Track[] {
+        return this.getOption("call").localMedia?.tracks ?? [];
+    }
+}
+
+type MemberOptions = BaseOptions & {member: Member};
+
+class CallMemberViewModel extends ViewModel<MemberOptions> {
+    get tracks(): Track[] {
+        return this.getOption("member").remoteTracks;
     }
 }
diff --git a/src/domain/session/room/RoomViewModel.js b/src/domain/session/room/RoomViewModel.js
index 4540fdb1..f79be3c0 100644
--- a/src/domain/session/room/RoomViewModel.js
+++ b/src/domain/session/room/RoomViewModel.js
@@ -43,6 +43,10 @@ export class RoomViewModel extends ViewModel {
         }
         this._clearUnreadTimout = null;
         this._closeUrl = this.urlCreator.urlUntilSegment("session");
+        this._setupCallViewModel();
+    }
+
+    _setupCallViewModel() {
         // pick call for this room with lowest key
         this._callObservable = new PickMapObservableValue(session.callHandler.calls.filterValues(c => c.roomId === this.roomId));
         this._callViewModel = undefined;
@@ -53,8 +57,9 @@ export class RoomViewModel extends ViewModel {
             }
             this.emitChange("callViewModel");
         }));
-        if (this._callObservable.get()) {
-            this._callViewModel = new CallViewModel(this.childOptions({call: this._callObservable.get()}));
+        const call = this._callObservable.get();
+        if (call) {
+            this._callViewModel = new CallViewModel(this.childOptions({call}));
         }
     }
 
diff --git a/src/platform/web/ui/session/room/CallView.ts b/src/platform/web/ui/session/room/CallView.ts
new file mode 100644
index 00000000..2c10f82f
--- /dev/null
+++ b/src/platform/web/ui/session/room/CallView.ts
@@ -0,0 +1,43 @@
+/*
+Copyright 2022 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import {TemplateView, TemplateBuilder} from "../../general/TemplateView";
+import {Track, TrackType} from "../../../../types/MediaDevices";
+import type {TrackWrapper} from "../../../dom/MediaDevices";
+import type {CallViewModel} from "../../../../../domain/session/room/CallViewModel";
+
+function bindVideoTracks<T>(t: TemplateBuilder<T>, video: HTMLVideoElement, propSelector: (vm: T) => Track[]) {
+    t.mapSideEffect(propSelector, tracks => {
+        if (tracks.length) {
+            video.srcObject = (tracks[0] as TrackWrapper).stream;
+        }
+    });
+}
+
+export class CallView extends TemplateView<CallViewModel> {
+    render(t: TemplateBuilder<CallViewModel>, vm: CallViewModel): HTMLElement {
+        return t.div({class: "CallView"}, [
+            t.div({class: "CallView_me"}, bindVideoTracks(t, t.video(), vm => vm.localTracks)),
+            t.view(new ListView(vm.memberViewModels, vm => new MemberView(vm)))
+        ]);
+    }
+}
+
+class MemberView extends TemplateView<CallMemberViewModel> {
+    render(t, vm) {
+        return bindVideoTracks(t, t.video(), vm => vm.tracks);
+    }
+}
diff --git a/src/platform/web/ui/session/room/RoomView.js b/src/platform/web/ui/session/room/RoomView.js
index 541cc4d8..4d010a7c 100644
--- a/src/platform/web/ui/session/room/RoomView.js
+++ b/src/platform/web/ui/session/room/RoomView.js
@@ -23,6 +23,7 @@ import {TimelineLoadingView} from "./TimelineLoadingView.js";
 import {MessageComposer} from "./MessageComposer.js";
 import {RoomArchivedView} from "./RoomArchivedView.js";
 import {AvatarView} from "../../AvatarView.js";
+import {CallView} from "./CallView";
 
 export class RoomView extends TemplateView {
     constructor(options) {
@@ -52,8 +53,8 @@ export class RoomView extends TemplateView {
             ]),
             t.div({className: "RoomView_body"}, [
                 t.div({className: "RoomView_error"}, vm => vm.error),
-                t.map(vm => vm.callViewModel, (callViewModel, t) => {
-                    return t.p(["A call is in progress", callViewModel => callViewModel.name])
+                t.mapView(vm => vm.callViewModel, callViewModel => {
+                    return new CallView(callViewModel);
                 }),
                 t.mapView(vm => vm.timelineViewModel, timelineViewModel => {
                     return timelineViewModel ?