Live location share - forward latest location (PSF-1044) (#8860)

* handle beacon location events in ForwardDialog

* add transformer for forwarded events in MessageContextMenu

* remove canForward

* update snapshots for beacon model change

* add comments

* fix bad copy pasted test

* add test for beacon locations

src/components/views/context_menus/MessageContextMenu.tsx

@@ -30,7 +30,7 @@ import Modal from '../../../Modal';
 import Resend from '../../../Resend';
 import SettingsStore from '../../../settings/SettingsStore';
 import { isUrlPermitted } from '../../../HtmlUtils';
-import { canEditContent, canForward, editEvent, isContentActionable, isLocationEvent } from '../../../utils/EventUtils';
+import { canEditContent, editEvent, isContentActionable, isLocationEvent } from '../../../utils/EventUtils';
 import IconizedContextMenu, { IconizedContextMenuOption, IconizedContextMenuOptionList } from './IconizedContextMenu';
 import { ReadPinsEventId } from "../right_panel/types";
 import { Action } from "../../../dispatcher/actions";
@@ -51,6 +51,7 @@ import { GetRelationsForEvent, IEventTileOps } from "../rooms/EventTile";
 import { OpenForwardDialogPayload } from "../../../dispatcher/payloads/OpenForwardDialogPayload";
 import { OpenReportEventDialogPayload } from "../../../dispatcher/payloads/OpenReportEventDialogPayload";
 import { createMapSiteLinkFromEvent } from '../../../utils/location';
+import { getForwardableEvent } from '../../../events/forward/getForwardableEvent';
 
 interface IProps extends IPosition {
     chevronFace: ChevronFace;
@@ -188,10 +189,10 @@ export default class MessageContextMenu extends React.Component<IProps, IState>
         this.closeMenu();
     };
 
-    private onForwardClick = (): void => {
+    private onForwardClick = (forwardableEvent: MatrixEvent) => (): void => {
         dis.dispatch<OpenForwardDialogPayload>({
             action: Action.OpenForwardDialog,
-            event: this.props.mxEvent,
+            event: forwardableEvent,
             permalinkCreator: this.props.permalinkCreator,
         });
         this.closeMenu();
@@ -379,12 +380,13 @@ export default class MessageContextMenu extends React.Component<IProps, IState>
         }
 
         let forwardButton: JSX.Element;
-        if (contentActionable && canForward(mxEvent)) {
+        const forwardableEvent = getForwardableEvent(mxEvent, cli);
+        if (contentActionable && forwardableEvent) {
             forwardButton = (
                 <IconizedContextMenuOption
                     iconClassName="mx_MessageContextMenu_iconForward"
                     label={_t("Forward")}
-                    onClick={this.onForwardClick}
+                    onClick={this.onForwardClick(forwardableEvent)}
                 />
             );
         }

src/components/views/dialogs/ForwardDialog.tsx

@@ -23,6 +23,7 @@ import { RoomMember } from "matrix-js-sdk/src/models/room-member";
 import { EventType } from "matrix-js-sdk/src/@types/event";
 import { ILocationContent, LocationAssetType, M_TIMESTAMP } from "matrix-js-sdk/src/@types/location";
 import { makeLocationContent } from "matrix-js-sdk/src/content-helpers";
+import { M_BEACON } from "matrix-js-sdk/src/@types/beacon";
 
 import { _t } from "../../../languageHandler";
 import dis from "../../../dispatcher/dispatcher";
@@ -158,7 +159,7 @@ const Entry: React.FC<IEntryProps> = ({ room, type, content, matrixClient: cli,
     </div>;
 };
 
-const getStrippedEventContent = (event: MatrixEvent): IContent => {
+const transformEvent = (event: MatrixEvent): {type: string, content: IContent } => {
     const {
         // eslint-disable-next-line @typescript-eslint/no-unused-vars
         "m.relates_to": _, // strip relations - in future we will attach a relation pointing at the original event
@@ -166,24 +167,34 @@ const getStrippedEventContent = (event: MatrixEvent): IContent => {
         ...content
     } = event.getContent();
 
+    // beacon pulses get transformed into static locations on forward
+    const type = M_BEACON.matches(event.getType()) ? EventType.RoomMessage : event.getType();
+
     // self location shares should have their description removed
     // and become 'pin' share type
-    if (isLocationEvent(event) && isSelfLocation(content as ILocationContent)) {
+    if (
+        (isLocationEvent(event) && isSelfLocation(content as ILocationContent)) ||
+        // beacon pulses get transformed into static locations on forward
+        M_BEACON.matches(event.getType())
+    ) {
         const timestamp = M_TIMESTAMP.findIn<number>(content);
         const geoUri = locationEventGeoUri(event);
         return {
-            ...content,
-            ...makeLocationContent(
-                undefined, // text
-                geoUri,
-                timestamp || Date.now(),
-                undefined, // description
-                LocationAssetType.Pin,
-            ),
+            type,
+            content: {
+                ...content,
+                ...makeLocationContent(
+                    undefined, // text
+                    geoUri,
+                    timestamp || Date.now(),
+                    undefined, // description
+                    LocationAssetType.Pin,
+                ),
+            },
         };
     }
 
-    return content;
+    return { type, content };
 };
 
 const ForwardDialog: React.FC<IProps> = ({ matrixClient: cli, event, permalinkCreator, onFinished }) => {
@@ -193,7 +204,7 @@ const ForwardDialog: React.FC<IProps> = ({ matrixClient: cli, event, permalinkCr
         cli.getProfileInfo(userId).then(info => setProfileInfo(info));
     }, [cli, userId]);
 
-    const content = getStrippedEventContent(event);
+    const { type, content } = transformEvent(event);
 
     // For the message preview we fake the sender as ourselves
     const mockEvent = new MatrixEvent({
@@ -293,7 +304,7 @@ const ForwardDialog: React.FC<IProps> = ({ matrixClient: cli, event, permalinkCr
                                 <Entry
                                     key={room.roomId}
                                     room={room}
-                                    type={event.getType()}
+                                    type={type}
                                     content={content}
                                     matrixClient={cli}
                                     onFinished={onFinished}

src/events/forward/getForwardableBeacon.ts

@@ -0,0 +1,34 @@
+/*
+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 { getBeaconInfoIdentifier } from "matrix-js-sdk/src/matrix";
+
+import { ForwardableEventTransformFunction } from "./types";
+
+/**
+ * Live location beacons should forward their latest location as a static pin location
+ * If the beacon is not live, or doesn't have a location forwarding is not allowed
+ */
+export const getForwardableBeaconEvent: ForwardableEventTransformFunction = (event, cli) => {
+    const room = cli.getRoom(event.getRoomId());
+    const beacon = room.currentState.beacons?.get(getBeaconInfoIdentifier(event));
+    const latestLocationEvent = beacon.latestLocationEvent;
+
+    if (beacon.isLive && latestLocationEvent) {
+        return latestLocationEvent;
+    }
+    return null;
+};

src/events/forward/getForwardableEvent.ts

@@ -0,0 +1,36 @@
+/*
+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 { M_POLL_START } from "matrix-events-sdk";
+import { M_BEACON_INFO } from "matrix-js-sdk/src/@types/beacon";
+import { MatrixEvent, MatrixClient } from "matrix-js-sdk/src/matrix";
+
+import { getForwardableBeaconEvent } from "./getForwardableBeacon";
+
+/**
+ * Get forwardable event for a given event
+ * If an event is not forwardable return null
+ */
+export const getForwardableEvent = (event: MatrixEvent, cli: MatrixClient): MatrixEvent | null => {
+    if (M_POLL_START.matches(event.getType())) {
+        return null;
+    }
+    if (M_BEACON_INFO.matches(event.getType())) {
+        return getForwardableBeaconEvent(event, cli);
+    }
+    return event;
+};
+

src/events/forward/types.ts

@@ -0,0 +1,19 @@
+/*
+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 { MatrixClient, MatrixEvent } from "matrix-js-sdk/src/matrix";
+
+export type ForwardableEventTransformFunction = (event: MatrixEvent, cli: MatrixClient) => MatrixEvent | null;

src/utils/EventUtils.ts

@@ -281,14 +281,6 @@ export const isLocationEvent = (event: MatrixEvent): boolean => {
     );
 };
 
-export function canForward(event: MatrixEvent): boolean {
-    return !(
-        M_POLL_START.matches(event.getType()) ||
-        // disallow forwarding until psf-1044
-        M_BEACON_INFO.matches(event.getType())
-    );
-}
-
 export function hasThreadSummary(event: MatrixEvent): boolean {
     return event.isThreadRoot && event.getThread()?.length && !!event.getThread().replyToEvent;
 }