refactor: move room encryption check in a dedicated function

# Conflicts:
#	playwright/e2e/create-room/create-room.spec.ts

playwright/e2e/crypto/crypto.spec.ts

@@ -154,8 +154,8 @@ test.describe("Cryptography", function () {
             await app.client.bootstrapCrossSigning(aliceCredentials);
             await startDMWithBob(page, bob);
             // send first message
-            await page.getByRole("textbox", { name: "Send an unencrypted message…" }).fill("Hey!");
-            await page.getByRole("textbox", { name: "Send an unencrypted message…" }).press("Enter");
+            await page.getByRole("textbox", { name: "Send a message…" }).fill("Hey!");
+            await page.getByRole("textbox", { name: "Send a message…" }).press("Enter");
             await checkDMRoom(page);
             const bobRoomId = await bobJoin(page, bob);
             // We no longer show the grey badge in the composer, check that it is not there.

playwright/e2e/room/create-room.spec.ts

@@ -44,6 +44,21 @@ test.describe("Create Room", () => {
         },
     );
 
+    test("should allow us to start a chat and show encryption state", async ({ page, user, app }) => {
+        await page.getByRole("button", { name: "Add", exact: true }).click();
+        await page.getByText("Start new chat").click();
+
+        await page.getByTestId("invite-dialog-input").fill(user.userId);
+
+        await page.getByRole("button", { name: "Go" }).click();
+
+        await expect(page.getByText("Encryption enabled")).toBeVisible();
+        await expect(page.getByText("Send your first message to")).toBeVisible();
+
+        const composer = page.getByRole("region", { name: "Message composer" });
+        await expect(composer.getByRole("textbox", { name: "Send a message…" })).toBeVisible();
+    });
+
     test("should create a video room", { tag: "@screenshot" }, async ({ page, user, app }) => {
         await app.settings.setValue("feature_video_rooms", null, SettingLevel.DEVICE, true);
 

playwright/e2e/spotlight/spotlight.spec.ts

@@ -30,7 +30,7 @@ async function startDM(app: ElementAppPage, page: Page, name: string): Promise<v
     await result.first().click();
 
     // send first message to start DM
-    const locator = page.getByRole("textbox", { name: "Send an unencrypted message…" });
+    const locator = page.getByRole("textbox", { name: "Send a message…" });
     await expect(locator).toBeFocused();
     await locator.fill("Hey!");
     await locator.press("Enter");
@@ -260,7 +260,7 @@ test.describe("Spotlight", () => {
 
         // Send first message to actually start DM
         await expect(roomHeaderName(page)).toHaveText(bot2.credentials.displayName);
-        const locator = page.getByRole("textbox", { name: "Send an unencrypted message…" });
+        const locator = page.getByRole("textbox", { name: "Send a message…" });
         await locator.fill("Hey!");
         await locator.press("Enter");
 

src/components/structures/RoomView.tsx

@@ -133,6 +133,7 @@ import { PinnedMessageBanner } from "../views/rooms/PinnedMessageBanner";
 import { ScopedRoomContextProvider, useScopedRoomContext } from "../../contexts/ScopedRoomContext";
 import { DeclineAndBlockInviteDialog } from "../views/dialogs/DeclineAndBlockInviteDialog";
 import { type FocusMessageSearchPayload } from "../../dispatcher/payloads/FocusMessageSearchPayload.ts";
+import { isRoomEncrypted } from "../../hooks/useIsEncrypted";
 
 const DEBUG = false;
 const PREVENT_MULTIPLE_JITSI_WITHIN = 30_000;
@@ -257,6 +258,7 @@ interface LocalRoomViewProps {
     roomView: RefObject<HTMLElement | null>;
     onFileDrop: (dataTransfer: DataTransfer) => Promise<void>;
     mainSplitContentType: MainSplitContentType;
+    e2eStatus?: E2EStatus;
 }
 
 /**
@@ -304,6 +306,7 @@ function LocalRoomView(props: LocalRoomViewProps): ReactElement {
     } else {
         composer = (
             <MessageComposer
+                e2eStatus={props.e2eStatus}
                 room={props.localRoom}
                 resizeNotifier={props.resizeNotifier}
                 permalinkCreator={props.permalinkCreator}
@@ -1397,10 +1400,13 @@ export class RoomView extends React.Component<IRoomProps, IRoomState> {
     }
 
     private async getIsRoomEncrypted(roomId = this.state.roomId): Promise<boolean> {
-        const crypto = this.context.client?.getCrypto();
-        if (!crypto || !roomId) return false;
+        if (!roomId) return false;
 
-        return await crypto.isEncryptionEnabledInRoom(roomId);
+        const room = this.context.client?.getRoom(roomId);
+        const crypto = this.context.client?.getCrypto();
+        if (!room || !crypto) return false;
+
+        return isRoomEncrypted(room, crypto);
     }
 
     private async calculateRecommendedVersion(room: Room): Promise<void> {
@@ -2061,6 +2067,7 @@ export class RoomView extends React.Component<IRoomProps, IRoomState> {
         return (
             <ScopedRoomContextProvider {...this.state}>
                 <LocalRoomView
+                    e2eStatus={this.state.e2eStatus}
                     localRoom={localRoom}
                     resizeNotifier={this.props.resizeNotifier}
                     permalinkCreator={this.permalinkCreator}

src/hooks/useIsEncrypted.ts

@@ -7,9 +7,29 @@ Please see LICENSE files in the repository root for full details.
 */
 
 import { type MatrixClient, type MatrixEvent, type Room, EventType } from "matrix-js-sdk/src/matrix";
+import { type CryptoApi } from "matrix-js-sdk/src/crypto-api";
 
 import { useRoomState } from "./useRoomState.ts";
 import { useAsyncMemo } from "./useAsyncMemo.ts";
+import { LocalRoom } from "../models/LocalRoom.ts";
+
+/**
+ * Check if a room is encrypted.
+ * If the room is a LocalRoom, check the state directly.
+ * Otherwise, use the crypto API to check if encryption is enabled in the room.
+ *
+ * @param room - The room to check.
+ * @param cryptoApi - The crypto API from the Matrix client.
+ */
+export async function isRoomEncrypted(room: Room, cryptoApi: CryptoApi): Promise<boolean> {
+    if (room instanceof LocalRoom) {
+        // For local room check the state.
+        // The crypto check fails because the eventId is not valid (it is a local id)
+        return (room as LocalRoom).isEncryptionEnabled();
+    }
+
+    return await cryptoApi.isEncryptionEnabledInRoom(room.roomId);
+}
 
 // Hook to simplify watching whether a Matrix room is encrypted, returns null if room is undefined or the state is loading
 export function useIsEncrypted(cli: MatrixClient, room?: Room): boolean | null {
@@ -22,7 +42,7 @@ export function useIsEncrypted(cli: MatrixClient, room?: Room): boolean | null {
             const crypto = cli.getCrypto();
             if (!room || !crypto) return null;
 
-            return crypto.isEncryptionEnabledInRoom(room.roomId);
+            return isRoomEncrypted(room, crypto);
         },
         [room, encryptionStateEvent],
         null,

src/models/LocalRoom.ts

@@ -6,7 +6,14 @@ SPDX-License-Identifier: AGPL-3.0-only OR GPL-3.0-only OR LicenseRef-Element-Com
 Please see LICENSE files in the repository root for full details.
 */
 
-import { type MatrixClient, Room, PendingEventOrdering } from "matrix-js-sdk/src/matrix";
+import {
+    type MatrixClient,
+    Room,
+    PendingEventOrdering,
+    MatrixEvent,
+    Direction,
+    EventType,
+} from "matrix-js-sdk/src/matrix";
 
 import { type Member } from "../utils/direct-messages";
 
@@ -50,4 +57,18 @@ export class LocalRoom extends Room {
     public get isError(): boolean {
         return this.state === LocalRoomState.ERROR;
     }
+
+    /**
+     * Check if encryption is enabled in this room.
+     * True if the room has any encryption state event
+     */
+    public isEncryptionEnabled(): boolean {
+        // check the local room state
+        const encryptionState = this.getLiveTimeline()
+            .getState(Direction.Forward)
+            ?.getStateEvents(EventType.RoomEncryption)[0];
+        // if there is an encryption state event, it is encrypted.
+        // Regardless of the content/algorithm, we assume it is encrypted.
+        return encryptionState instanceof MatrixEvent;
+    }
 }

test/unit-tests/components/structures/__snapshots__/RoomView-test.tsx.snap

@@ -1183,7 +1183,7 @@ exports[`RoomView for a local room in state NEW that is encrypted should match t
       </div>
       <div
         aria-label="Message composer"
-        class="mx_MessageComposer mx_MessageComposer_e2eStatus"
+        class="mx_MessageComposer"
         role="region"
       >
         <div
@@ -1192,25 +1192,6 @@ exports[`RoomView for a local room in state NEW that is encrypted should match t
           <div
             class="mx_MessageComposer_row"
           >
-            <div
-              class="mx_MessageComposer_e2eIconWrapper"
-            >
-              <svg
-                aria-label="Messages in this room are not end-to-end encrypted"
-                aria-labelledby="«rfm»"
-                class="mx_E2EIcon mx_MessageComposer_e2eIcon"
-                color="var(--cpd-color-icon-info-primary)"
-                fill="currentColor"
-                height="12"
-                viewBox="0 0 24 24"
-                width="12"
-                xmlns="http://www.w3.org/2000/svg"
-              >
-                <path
-                  d="M6 22q-.825 0-1.412-.587A1.93 1.93 0 0 1 4 20V10q0-.825.588-1.412a2 2 0 0 1 .702-.463L1.333 4.167a1 1 0 0 1 1.414-1.414L7 7.006v-.012l13 13v.012l1.247 1.247a1 1 0 1 1-1.414 1.414l-.896-.896A1.94 1.94 0 0 1 18 22zm14-4.834V10q0-.825-.587-1.412A1.93 1.93 0 0 0 18 8h-1V6q0-2.075-1.463-3.537Q14.075 1 12 1T8.463 2.463a4.9 4.9 0 0 0-1.22 1.946L9 6.166V6q0-1.25.875-2.125A2.9 2.9 0 0 1 12 3q1.25 0 2.125.875T15 6v2h-4.166z"
-                />
-              </svg>
-            </div>
             <div
               class="mx_SendMessageComposer"
             >
@@ -1269,14 +1250,14 @@ exports[`RoomView for a local room in state NEW that is encrypted should match t
                   aria-autocomplete="list"
                   aria-disabled="false"
                   aria-haspopup="listbox"
-                  aria-label="Send an unencrypted message…"
+                  aria-label="Send a message…"
                   aria-multiline="true"
                   class="mx_BasicMessageComposer_input mx_BasicMessageComposer_input_shouldShowPillAvatar mx_BasicMessageComposer_inputEmpty"
                   contenteditable="true"
                   data-testid="basicmessagecomposer"
                   dir="auto"
                   role="textbox"
-                  style="--placeholder: 'Send\\ an\\ unencrypted\\ message…';"
+                  style="--placeholder: 'Send\\ a\\ message…';"
                   tabindex="0"
                   translate="no"
                 >

test/unit-tests/components/views/messages/EncryptionEvent-test.tsx

@@ -112,16 +112,19 @@ describe("EncryptionEvent", () => {
     });
 
     describe("for an encrypted local room", () => {
+        let localRoom: LocalRoom;
+
         beforeEach(() => {
             event.event.content!.algorithm = algorithm;
-            jest.spyOn(client.getCrypto()!, "isEncryptionEnabledInRoom").mockResolvedValue(true);
-            const localRoom = new LocalRoom(roomId, client, client.getUserId()!);
+            // jest.spyOn(client.getCrypto()!, "isEncryptionEnabledInRoom").mockResolvedValue(true);
+            localRoom = new LocalRoom(roomId, client, client.getUserId()!);
+            jest.spyOn(localRoom, "isEncryptionEnabled").mockReturnValue(true);
             mocked(client.getRoom).mockReturnValue(localRoom);
             renderEncryptionEvent(client, event);
         });
 
         it("should show the expected texts", async () => {
-            expect(client.getCrypto()!.isEncryptionEnabledInRoom).toHaveBeenCalledWith(roomId);
+            expect(localRoom.isEncryptionEnabled).toHaveBeenCalled();
             await checkTexts("Encryption enabled", "Messages in this chat will be end-to-end encrypted.");
         });
     });