From 078599798374551e11f8511037f62b44f6977e5a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C5=A0imon=20Brandner?= <simon.bra.ag@gmail.com>
Date: Tue, 1 Jun 2021 11:28:45 +0200
Subject: [PATCH] Handle missed calls
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Signed-off-by: Šimon Brandner <simon.bra.ag@gmail.com>
---
 res/css/views/messages/_CallEvent.scss        |  5 ++++
 src/components/structures/CallEventGrouper.ts | 23 +++++++++++++++----
 src/components/views/messages/CallEvent.tsx   | 21 ++++++++++++-----
 3 files changed, 38 insertions(+), 11 deletions(-)

diff --git a/res/css/views/messages/_CallEvent.scss b/res/css/views/messages/_CallEvent.scss
index e41cb7becf..9f61295a5a 100644
--- a/res/css/views/messages/_CallEvent.scss
+++ b/res/css/views/messages/_CallEvent.scss
@@ -48,5 +48,10 @@ limitations under the License.
     .mx_CallEvent_content {
         display: flex;
         flex-direction: row;
+        align-items: center;
+
+        .mx_CallEvent_content_callBack {
+            margin-left: 10px; // To match mx_callEvent
+        }
     }
 }
diff --git a/src/components/structures/CallEventGrouper.ts b/src/components/structures/CallEventGrouper.ts
index 08f91f42bf..5a3e5720e3 100644
--- a/src/components/structures/CallEventGrouper.ts
+++ b/src/components/structures/CallEventGrouper.ts
@@ -17,9 +17,11 @@ limitations under the License.
 
 import { EventType } from "matrix-js-sdk/src/@types/event";
 import { MatrixEvent } from "matrix-js-sdk/src/models/event";
-import { CallEvent, CallState, MatrixCall } from "matrix-js-sdk/src/webrtc/call";
+import { CallEvent, CallState, CallType, MatrixCall } from "matrix-js-sdk/src/webrtc/call";
 import CallHandler from '../../CallHandler';
 import { EventEmitter } from 'events';
+import { MatrixClientPeg } from "../../MatrixClientPeg";
+import defaultDispatcher from "../../dispatcher/dispatcher";
 
 export enum CallEventGrouperEvent {
     StateChanged = "state_changed",
@@ -32,10 +34,14 @@ const SUPPORTED_STATES = [
     CallState.Ringing,
 ];
 
+export enum CustomCallState {
+    Missed = "missed",
+}
+
 export default class CallEventGrouper extends EventEmitter {
     events: Array<MatrixEvent> = [];
     call: MatrixCall;
-    state: CallState;
+    state: CallState | CustomCallState;
 
     private get invite(): MatrixEvent {
         return this.events.find((event) => event.getType() === EventType.CallInvite);
@@ -50,7 +56,11 @@ export default class CallEventGrouper extends EventEmitter {
     }
 
     public callBack = () => {
-
+        defaultDispatcher.dispatch({
+            action: 'place_call',
+            type: this.isVoice ? CallType.Voice : CallType.Video,
+            room_id: this.events[0]?.getRoomId(),
+        });
     }
 
     public isVoice(): boolean {
@@ -68,7 +78,7 @@ export default class CallEventGrouper extends EventEmitter {
         return isVoice;
     }
 
-    public getState() {
+    public getState(): CallState | CustomCallState {
         return this.state;
     }
 
@@ -86,7 +96,10 @@ export default class CallEventGrouper extends EventEmitter {
 
             if (lastEventType === EventType.CallHangup) this.state = CallState.Ended;
             else if (lastEventType === EventType.CallReject) this.state = CallState.Ended;
-            else if (lastEventType === EventType.CallInvite) this.state = CallState.Connecting;
+            else if (lastEventType === EventType.CallInvite && this.call) this.state = CallState.Connecting;
+            else if (this.invite?.sender?.userId !== MatrixClientPeg.get().getUserId()) {
+                this.state = CustomCallState.Missed;
+            }
         }
         this.emit(CallEventGrouperEvent.StateChanged, this.state);
     }
diff --git a/src/components/views/messages/CallEvent.tsx b/src/components/views/messages/CallEvent.tsx
index a048faf6b0..fbc653a8ca 100644
--- a/src/components/views/messages/CallEvent.tsx
+++ b/src/components/views/messages/CallEvent.tsx
@@ -19,7 +19,7 @@ import React from 'react';
 import { MatrixEvent } from "matrix-js-sdk/src/models/event";
 import { _t, _td } from '../../../languageHandler';
 import MemberAvatar from '../avatars/MemberAvatar';
-import CallEventGrouper, { CallEventGrouperEvent } from '../../structures/CallEventGrouper';
+import CallEventGrouper, { CallEventGrouperEvent, CustomCallState } from '../../structures/CallEventGrouper';
 import FormButton from '../elements/FormButton';
 import { CallState } from 'matrix-js-sdk/src/webrtc/call';
 
@@ -29,10 +29,10 @@ interface IProps {
 }
 
 interface IState {
-    callState: CallState;
+    callState: CallState | CustomCallState;
 }
 
-const TEXTUAL_STATES = new Map([
+const TEXTUAL_STATES: Map<CallState | CustomCallState, string> = new Map([
     [CallState.Connected, _td("Connected")],
     [CallState.Connecting, _td("Connecting")],
     [CallState.Ended, _td("This call has ended")],
@@ -69,14 +69,11 @@ export default class CallEvent extends React.Component<IProps, IState> {
             content = (
                 <div className="mx_CallEvent_content">
                     <FormButton
-                        className={"mx_IncomingCallBox_decline"}
                         onClick={this.props.callEventGrouper.rejectCall}
                         kind="danger"
                         label={_t("Decline")}
                     />
-                    <div className="mx_IncomingCallBox_spacer" />
                     <FormButton
-                        className={"mx_IncomingCallBox_accept"}
                         onClick={this.props.callEventGrouper.answerCall}
                         kind="primary"
                         label={_t("Accept")}
@@ -89,6 +86,18 @@ export default class CallEvent extends React.Component<IProps, IState> {
                     { TEXTUAL_STATES.get(state) }
                 </div>
             );
+        } else if (state === CustomCallState.Missed) {
+            content = (
+                <div className="mx_CallEvent_content">
+                    { _t("You missed this call") }
+                    <FormButton
+                        className="mx_CallEvent_content_callBack"
+                        onClick={this.props.callEventGrouper.callBack}
+                        kind="primary"
+                        label={_t("Call back")}
+                    />
+                </div>
+            );
         } else {
             content = (
                 <div className="mx_CallEvent_content">