Second batch: Replace `MatrixClient.isRoomEncrypted` by `MatrixClient.CryptoApi.isEncryptionEnabledInRoom` (#28466)

* Add `asyncFilter`

* Replace `MatrixClient.isRoomEncrypted` by `MatrixClient.CryptoApi.isEncryptionEnabledInRoom` in `MemberListStore.tsx`

* Replace `MatrixClient.isRoomEncrypted` by `MatrixClient.CryptoApi.isEncryptionEnabledInRoom` in `EventIndex.tsx`

* Replace `MatrixClient.isRoomEncrypted` by `MatrixClient.CryptoApi.isEncryptionEnabledInRoom` in `SendMessageComposer.tsx`

* Replace `MatrixClient.isRoomEncrypted` by `MatrixClient.CryptoApi.isEncryptionEnabledInRoom` in `ScalarMessaging.ts`

* Replace `MatrixClient.isRoomEncrypted` by `MatrixClient.CryptoApi.isEncryptionEnabledInRoom` in `RolesRoomSettingsTab.tsx`

* Add reject doc to `asyncFilter`

* Reverse `MemberListStore.loadMembers` condition

* Remove async for `ScalarMessaging.ts`

* Display permission section only after `isEncrypted` is computed

* Display composer only after `isEncrypted` is computed

* Revert "Display composer only after `isEncrypted` is computed"

This reverts commit 4d4e037391.

* Revert "Replace `MatrixClient.isRoomEncrypted` by `MatrixClient.CryptoApi.isEncryptionEnabledInRoom` in `SendMessageComposer.tsx`"

This reverts commit 6bf06da02c.

src/ScalarMessaging.ts

@@ -514,7 +514,7 @@ function getWidgets(event: MessageEvent<any>, roomId: string | null): void {
     sendResponse(event, widgetStateEvents);
 }
 
-function getRoomEncState(event: MessageEvent<any>, roomId: string): void {
+async function getRoomEncState(event: MessageEvent<any>, roomId: string): Promise<void> {
     const client = MatrixClientPeg.get();
     if (!client) {
         sendError(event, _t("widget|error_need_to_be_logged_in"));
@@ -525,7 +525,7 @@ function getRoomEncState(event: MessageEvent<any>, roomId: string): void {
         sendError(event, _t("scalar|error_room_unknown"));
         return;
     }
-    const roomIsEncrypted = MatrixClientPeg.safeGet().isRoomEncrypted(roomId);
+    const roomIsEncrypted = Boolean(await client.getCrypto()?.isEncryptionEnabledInRoom(roomId));
 
     sendResponse(event, roomIsEncrypted);
 }

src/components/views/settings/tabs/room/RolesRoomSettingsTab.tsx

@@ -127,12 +127,30 @@ interface IProps {
     room: Room;
 }
 
-export default class RolesRoomSettingsTab extends React.Component<IProps> {
+interface RolesRoomSettingsTabState {
+    isRoomEncrypted: boolean;
+    isReady: boolean;
+}
+
+export default class RolesRoomSettingsTab extends React.Component<IProps, RolesRoomSettingsTabState> {
     public static contextType = MatrixClientContext;
     public declare context: React.ContextType<typeof MatrixClientContext>;
 
-    public componentDidMount(): void {
+    public constructor(props: IProps) {
+        super(props);
+        this.state = {
+            isReady: false,
+            isRoomEncrypted: false,
+        };
+    }
+
+    public async componentDidMount(): Promise<void> {
         this.context.on(RoomStateEvent.Update, this.onRoomStateUpdate);
+        this.setState({
+            isRoomEncrypted:
+                (await this.context.getCrypto()?.isEncryptionEnabledInRoom(this.props.room.roomId)) || false,
+            isReady: true,
+        });
     }
 
     public componentWillUnmount(): void {
@@ -416,7 +434,7 @@ export default class RolesRoomSettingsTab extends React.Component<IProps> {
             .filter(Boolean);
 
         // hide the power level selector for enabling E2EE if it the room is already encrypted
-        if (client.isRoomEncrypted(this.props.room.roomId)) {
+        if (this.state.isRoomEncrypted) {
             delete eventsLevels[EventType.RoomEncryption];
         }
 
@@ -458,17 +476,19 @@ export default class RolesRoomSettingsTab extends React.Component<IProps> {
                     {canChangeLevels && <AddPrivilegedUsers room={room} defaultUserLevel={defaultUserLevel} />}
                     {mutedUsersSection}
                     {bannedUsersSection}
-                    <SettingsFieldset
+                    {this.state.isReady && (
-                        legend={_t("room_settings|permissions|permissions_section")}
+                        <SettingsFieldset
-                        description={
+                            legend={_t("room_settings|permissions|permissions_section")}
-                            isSpaceRoom
+                            description={
-                                ? _t("room_settings|permissions|permissions_section_description_space")
+                                isSpaceRoom
-                                : _t("room_settings|permissions|permissions_section_description_room")
+                                    ? _t("room_settings|permissions|permissions_section_description_space")
-                        }
+                                    : _t("room_settings|permissions|permissions_section_description_room")
-                    >
+                            }
-                        {powerSelectors}
+                        >
-                        {eventPowerSelectors}
+                            {powerSelectors}
-                    </SettingsFieldset>
+                            {eventPowerSelectors}
+                        </SettingsFieldset>
+                    )}
                 </SettingsSection>
             </SettingsTab>
         );

src/indexing/EventIndex.ts

@@ -39,6 +39,7 @@ import { MatrixClientPeg } from "../MatrixClientPeg";
 import SettingsStore from "../settings/SettingsStore";
 import { SettingLevel } from "../settings/SettingLevel";
 import { ICrawlerCheckpoint, IEventAndProfile, IIndexStats, ILoadArgs, ISearchArgs } from "./BaseEventIndexManager";
+import { asyncFilter } from "../utils/arrays.ts";
 
 // The time in ms that the crawler will wait loop iterations if there
 // have not been any checkpoints to consume in the last iteration.
@@ -103,13 +104,11 @@ export default class EventIndex extends EventEmitter {
         const client = MatrixClientPeg.safeGet();
         const rooms = client.getRooms();
 
-        const isRoomEncrypted = (room: Room): boolean => {
-            return client.isRoomEncrypted(room.roomId);
-        };
-
         // We only care to crawl the encrypted rooms, non-encrypted
         // rooms can use the search provided by the homeserver.
-        const encryptedRooms = rooms.filter(isRoomEncrypted);
+        const encryptedRooms = await asyncFilter(rooms, async (room) =>
+            Boolean(await client.getCrypto()?.isEncryptionEnabledInRoom(room.roomId)),
+        );
 
         logger.log("EventIndex: Adding initial crawler checkpoints");
 

src/stores/MemberListStore.ts

@@ -70,7 +70,7 @@ export class MemberListStore {
             return [];
         }
 
-        if (!this.isLazyLoadingEnabled(roomId) || this.loadedRooms.has(roomId)) {
+        if (this.loadedRooms.has(roomId) || !(await this.isLazyLoadingEnabled(roomId))) {
             // nice and easy, we must already have all the members so just return them.
             return this.loadMembersInRoom(room);
         }
@@ -121,10 +121,10 @@ export class MemberListStore {
      * @param roomId The room to check if lazy loading is enabled
      * @returns True if enabled
      */
-    private isLazyLoadingEnabled(roomId: string): boolean {
+    private async isLazyLoadingEnabled(roomId: string): Promise<boolean> {
         if (SettingsStore.getValue("feature_sliding_sync")) {
             // only unencrypted rooms use lazy loading
-            return !this.stores.client!.isRoomEncrypted(roomId);
+            return !(await this.stores.client?.getCrypto()?.isEncryptionEnabledInRoom(roomId));
         }
         return this.stores.client!.hasLazyLoadMembersEnabled();
     }

src/utils/arrays.ts

@@ -350,6 +350,17 @@ export async function asyncSomeParallel<T>(
     }
 }
 
+/**
+ * Async version of Array.filter.
+ * If one of the promises rejects, the whole operation will reject.
+ * @param values
+ * @param predicate
+ */
+export async function asyncFilter<T>(values: Array<T>, predicate: (value: T) => Promise<boolean>): Promise<Array<T>> {
+    const results = await Promise.all(values.map(predicate));
+    return values.filter((_, i) => results[i]);
+}
+
 export function filterBoolean<T>(values: Array<T | null | undefined>): T[] {
     return values.filter(Boolean) as T[];
 }

test/unit-tests/components/views/settings/tabs/room/RolesRoomSettingsTab-test.tsx

@@ -27,16 +27,19 @@ describe("RolesRoomSettingsTab", () => {
     let cli: MatrixClient;
     let room: Room;
 
-    const renderTab = (propRoom: Room = room): RenderResult => {
+    const renderTab = async (propRoom: Room = room): Promise<RenderResult> => {
-        return render(<RolesRoomSettingsTab room={propRoom} />, withClientContextRenderOptions(cli));
+        const renderResult = render(<RolesRoomSettingsTab room={propRoom} />, withClientContextRenderOptions(cli));
+        // Wait for the tab to be ready
+        await waitFor(() => expect(screen.getByText("Permissions")).toBeInTheDocument());
+        return renderResult;
     };
 
-    const getVoiceBroadcastsSelect = (): HTMLElement => {
+    const getVoiceBroadcastsSelect = async (): Promise<Element> => {
-        return renderTab().container.querySelector("select[label='Voice broadcasts']")!;
+        return (await renderTab()).container.querySelector("select[label='Voice broadcasts']")!;
     };
 
-    const getVoiceBroadcastsSelectedOption = (): HTMLElement => {
+    const getVoiceBroadcastsSelectedOption = async (): Promise<Element> => {
-        return renderTab().container.querySelector("select[label='Voice broadcasts'] option:checked")!;
+        return (await renderTab()).container.querySelector("select[label='Voice broadcasts'] option:checked")!;
     };
 
     beforeEach(() => {
@@ -45,7 +48,7 @@ describe("RolesRoomSettingsTab", () => {
         room = mkStubRoom(roomId, "test room", cli);
     });
 
-    it("should allow an Admin to demote themselves but not others", () => {
+    it("should allow an Admin to demote themselves but not others", async () => {
         mocked(cli.getRoom).mockReturnValue(room);
         // @ts-ignore - mocked doesn't support overloads properly
         mocked(room.currentState.getStateEvents).mockImplementation((type, key) => {
@@ -67,19 +70,19 @@ describe("RolesRoomSettingsTab", () => {
             return null;
         });
         mocked(room.currentState.mayClientSendStateEvent).mockReturnValue(true);
-        const { container } = renderTab();
+        const { container } = await renderTab();
 
         expect(container.querySelector(`[placeholder="${cli.getUserId()}"]`)).not.toBeDisabled();
         expect(container.querySelector(`[placeholder="@admin:server"]`)).toBeDisabled();
     });
 
-    it("should initially show »Moderator« permission for »Voice broadcasts«", () => {
+    it("should initially show »Moderator« permission for »Voice broadcasts«", async () => {
-        expect(getVoiceBroadcastsSelectedOption().textContent).toBe("Moderator");
+        expect((await getVoiceBroadcastsSelectedOption()).textContent).toBe("Moderator");
     });
 
     describe("when setting »Default« permission for »Voice broadcasts«", () => {
-        beforeEach(() => {
+        beforeEach(async () => {
-            fireEvent.change(getVoiceBroadcastsSelect(), {
+            fireEvent.change(await getVoiceBroadcastsSelect(), {
                 target: { value: 0 },
             });
         });
@@ -122,12 +125,12 @@ describe("RolesRoomSettingsTab", () => {
             });
 
             describe("Join Element calls", () => {
-                it("defaults to moderator for joining calls", () => {
+                it("defaults to moderator for joining calls", async () => {
-                    expect(getJoinCallSelectedOption(renderTab())?.textContent).toBe("Moderator");
+                    expect(getJoinCallSelectedOption(await renderTab())?.textContent).toBe("Moderator");
                 });
 
-                it("can change joining calls power level", () => {
+                it("can change joining calls power level", async () => {
-                    const tab = renderTab();
+                    const tab = await renderTab();
 
                     fireEvent.change(getJoinCallSelect(tab), {
                         target: { value: 0 },
@@ -143,12 +146,12 @@ describe("RolesRoomSettingsTab", () => {
             });
 
             describe("Start Element calls", () => {
-                it("defaults to moderator for starting calls", () => {
+                it("defaults to moderator for starting calls", async () => {
-                    expect(getStartCallSelectedOption(renderTab())?.textContent).toBe("Moderator");
+                    expect(getStartCallSelectedOption(await renderTab())?.textContent).toBe("Moderator");
                 });
 
-                it("can change starting calls power level", () => {
+                it("can change starting calls power level", async () => {
-                    const tab = renderTab();
+                    const tab = await renderTab();
 
                     fireEvent.change(getStartCallSelect(tab), {
                         target: { value: 0 },
@@ -164,10 +167,10 @@ describe("RolesRoomSettingsTab", () => {
             });
         });
 
-        it("hides when group calls disabled", () => {
+        it("hides when group calls disabled", async () => {
             setGroupCallsEnabled(false);
 
-            const tab = renderTab();
+            const tab = await renderTab();
 
             expect(getStartCallSelect(tab)).toBeFalsy();
             expect(getStartCallSelectedOption(tab)).toBeFalsy();
@@ -250,7 +253,7 @@ describe("RolesRoomSettingsTab", () => {
             return null;
         });
         mocked(room.currentState.mayClientSendStateEvent).mockReturnValue(true);
-        const { container } = renderTab();
+        const { container } = await renderTab();
 
         const selector = container.querySelector(`[placeholder="${cli.getUserId()}"]`)!;
         fireEvent.change(selector, { target: { value: "50" } });

test/unit-tests/stores/MemberListStore-test.ts

@@ -189,8 +189,7 @@ describe("MemberListStore", () => {
         });
 
         it("does not use lazy loading on encrypted rooms", async () => {
-            client.isRoomEncrypted = jest.fn();
+            jest.spyOn(client.getCrypto()!, "isEncryptionEnabledInRoom").mockResolvedValue(true);
-            mocked(client.isRoomEncrypted).mockReturnValue(true);
 
             const { joined } = await store.loadMemberList(roomId);
             expect(joined).toEqual([room.getMember(alice)]);

test/unit-tests/utils/arrays-test.ts

@@ -24,6 +24,7 @@ import {
     asyncEvery,
     asyncSome,
     asyncSomeParallel,
+    asyncFilter,
 } from "../../../src/utils/arrays";
 
 type TestParams = { input: number[]; output: number[] };
@@ -480,4 +481,15 @@ describe("arrays", () => {
             expect(await asyncSomeParallel([1, 2, 3], predicate)).toBe(true);
         });
     });
+
+    describe("asyncFilter", () => {
+        it("when called with an empty array, it should return an empty array", async () => {
+            expect(await asyncFilter([], jest.fn().mockResolvedValue(true))).toEqual([]);
+        });
+
+        it("should filter the content", async () => {
+            const predicate = jest.fn().mockImplementation((value) => Promise.resolve(value === 2));
+            expect(await asyncFilter([1, 2, 3], predicate)).toEqual([2]);
+        });
+    });
 });