Add timezone to user profile

res/css/views/right_panel/_UserInfo.pcss

@@ -124,6 +124,10 @@ Please see LICENSE files in the repository root for full details.
         }
     }
 
+    .mx_UserInfo_timezone {
+        margin: var(--cpd-space-1x) 0;
+    }
+
     .mx_PresenceLabel {
         font: var(--cpd-font-body-sm-regular);
         opacity: 1;

src/components/structures/LoggedInView.tsx

@@ -131,6 +131,7 @@ class LoggedInView extends React.Component<IProps, IState> {
     protected layoutWatcherRef?: string;
     protected compactLayoutWatcherRef?: string;
     protected backgroundImageWatcherRef?: string;
+    protected timezoneProfileUpdateRef?: string[];
     protected resizer?: Resizer<ICollapseConfig, CollapseItem>;
 
     public constructor(props: IProps) {
@@ -182,6 +183,11 @@ class LoggedInView extends React.Component<IProps, IState> {
             this.refreshBackgroundImage,
         );
 
+        this.timezoneProfileUpdateRef = [
+            SettingsStore.watchSetting("userTimezonePublish", null, this.onTimezoneUpdate),
+            SettingsStore.watchSetting("userTimezone", null, this.onTimezoneUpdate),
+        ];
+
         this.resizer = this.createResizer();
         this.resizer.attach();
 
@@ -190,6 +196,31 @@ class LoggedInView extends React.Component<IProps, IState> {
         this.refreshBackgroundImage();
     }
 
+    private onTimezoneUpdate = async (): Promise<void> => {
+        if (!SettingsStore.getValue("userTimezonePublish")) {
+            // Ensure it's deleted
+            try {
+                await this._matrixClient.deleteExtendedProfileProperty("us.cloke.msc4175.tz");
+            } catch (ex) {
+                console.warn("Failed to delete timezone from user profile", ex);
+            }
+            return;
+        }
+        const currentTimezone =
+            SettingsStore.getValue("userTimezone") ||
+            // If the timezone is empty, then use the browser timezone.
+            // eslint-disable-next-line new-cap
+            Intl.DateTimeFormat().resolvedOptions().timeZone;
+        if (!currentTimezone || typeof currentTimezone !== "string") {
+            return;
+        }
+        try {
+            await this._matrixClient.setExtendedProfileProperty("us.cloke.msc4175.tz", currentTimezone);
+        } catch (ex) {
+            console.warn("Failed to update user profile with current timezone", ex);
+        }
+    };
+
     public componentWillUnmount(): void {
         document.removeEventListener("keydown", this.onNativeKeyDown, false);
         LegacyCallHandler.instance.removeListener(LegacyCallHandlerEvent.CallState, this.onCallState);
@@ -200,6 +231,7 @@ class LoggedInView extends React.Component<IProps, IState> {
         if (this.layoutWatcherRef) SettingsStore.unwatchSetting(this.layoutWatcherRef);
         if (this.compactLayoutWatcherRef) SettingsStore.unwatchSetting(this.compactLayoutWatcherRef);
         if (this.backgroundImageWatcherRef) SettingsStore.unwatchSetting(this.backgroundImageWatcherRef);
+        this.timezoneProfileUpdateRef?.forEach((s) => SettingsStore.unwatchSetting(s));
         this.resizer?.detach();
     }
 

src/components/views/right_panel/UserInfo.tsx

@@ -26,7 +26,7 @@ import { KnownMembership } from "matrix-js-sdk/src/types";
 import { UserVerificationStatus, VerificationRequest } from "matrix-js-sdk/src/crypto-api";
 import { logger } from "matrix-js-sdk/src/logger";
 import { CryptoEvent } from "matrix-js-sdk/src/crypto";
-import { Heading, MenuItem, Text } from "@vector-im/compound-web";
+import { Heading, MenuItem, Text, Tooltip } from "@vector-im/compound-web";
 import ChatIcon from "@vector-im/compound-design-tokens/assets/web/icons/chat";
 import CheckIcon from "@vector-im/compound-design-tokens/assets/web/icons/check";
 import ShareIcon from "@vector-im/compound-design-tokens/assets/web/icons/share";
@@ -85,7 +85,7 @@ import { SdkContextClass } from "../../../contexts/SDKContext";
 import { asyncSome } from "../../../utils/arrays";
 import { Flex } from "../../utils/Flex";
 import CopyableText from "../elements/CopyableText";
-
+import { useUserTimezone } from "../../../hooks/useUserTimezone";
 export interface IDevice extends Device {
     ambiguous?: boolean;
 }
@@ -1694,6 +1694,8 @@ export const UserInfoHeader: React.FC<{
         );
     }
 
+    const timezoneInfo = useUserTimezone(cli, member.userId);
+
     const e2eIcon = e2eStatus ? <E2EIcon size={18} status={e2eStatus} isUser={true} /> : null;
     const userIdentifier = UserIdentifierCustomisations.getDisplayUserIdentifier?.(member.userId, {
         roomId,
@@ -1727,6 +1729,15 @@ export const UserInfoHeader: React.FC<{
                         </Flex>
                     </Heading>
                     {presenceLabel}
+                    {timezoneInfo && (
+                        <Tooltip label={timezoneInfo?.timezone ?? ""}>
+                            <span className="mx_UserInfo_timezone">
+                                <Text size="sm" weight="regular">
+                                    {timezoneInfo?.friendly ?? ""}
+                                </Text>
+                            </span>
+                        </Tooltip>
+                    )}
                     <Text size="sm" weight="semibold" className="mx_UserInfo_profile_mxid">
                         <CopyableText getTextToCopy={() => userIdentifier} border={false}>
                             {userIdentifier}

src/components/views/settings/tabs/user/PreferencesUserSettingsTab.tsx

@@ -302,6 +302,7 @@ export default class PreferencesUserSettingsTab extends React.Component<IProps,
                         </div>
 
                         {this.renderGroup(PreferencesUserSettingsTab.TIME_SETTINGS)}
+                        <SettingsFlag name="userTimezonePublish" level={SettingLevel.DEVICE} />
                     </SettingsSubsection>
 
                     <SettingsSubsection

src/hooks/useUserTimezone.ts

@@ -0,0 +1,106 @@
+/*
+Copyright 2024 New Vector Ltd
+
+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 { useEffect, useState } from "react";
+import { MatrixClient, MatrixError } from "matrix-js-sdk/src/matrix";
+
+/**
+ * Fetch a user's delclared timezone through their profile, and return
+ * a friendly string of the current time for that user. This will keep
+ * in sync with the current time, and will be refreshed once a minute.
+ *
+ * @param cli The Matrix Client instance.
+ * @param userId The userID to fetch the timezone for.
+ * @returns A timezone name and friendly string for the user's timezone, or
+ *          null if the user has no timezone or the timezone was not recognised
+ *          by the browser.
+ */
+export const useUserTimezone = (cli: MatrixClient, userId: string): { timezone: string; friendly: string } | null => {
+    const [timezone, setTimezone] = useState<string>();
+    const [updateInterval, setUpdateInterval] = useState<number>();
+    const [friendly, setFriendly] = useState<string>();
+    const [supported, setSupported] = useState<boolean>();
+
+    useEffect(() => {
+        if (!cli || supported !== undefined) {
+            return;
+        }
+        cli.doesServerSupportExtendedProfiles()
+            .then(setSupported)
+            .catch((ex) => {
+                console.warn("Unable to determine if extended profiles are supported", ex);
+            });
+    }, [supported, cli]);
+
+    useEffect(() => {
+        return () => {
+            if (updateInterval) {
+                clearInterval(updateInterval);
+            }
+        };
+    }, [updateInterval]);
+
+    useEffect(() => {
+        if (supported !== true) {
+            return;
+        }
+        (async () => {
+            console.log("Trying to fetch TZ");
+            try {
+                const tz = await cli.getExtendedProfileProperty(userId, "us.cloke.msc4175.tz");
+                if (typeof tz !== "string") {
+                    // Err, definitely not a tz.
+                    throw Error("Timezone value was not a string");
+                }
+                // This will validate the timezone for us.
+                // eslint-disable-next-line new-cap
+                Intl.DateTimeFormat(undefined, { timeZone: tz });
+
+                const updateTime = (): void => {
+                    const currentTime = new Date();
+                    const friendly = currentTime.toLocaleString(undefined, {
+                        timeZone: tz,
+                        hour12: true,
+                        hour: "2-digit",
+                        minute: "2-digit",
+                        timeZoneName: "shortOffset",
+                    });
+                    setTimezone(tz);
+                    setFriendly(friendly);
+                    setUpdateInterval(setTimeout(updateTime, (60 - currentTime.getSeconds()) * 1000));
+                };
+                updateTime();
+            } catch (ex) {
+                setTimezone(undefined);
+                setFriendly(undefined);
+                setUpdateInterval(undefined);
+                if (ex instanceof MatrixError && ex.errcode === "M_NOT_FOUND") {
+                    // No timezone set, ignore.
+                    return;
+                }
+                console.error("Could not render current timezone for user", ex);
+            }
+        })();
+    }, [supported, userId, cli]);
+
+    if (!timezone || !friendly) {
+        return null;
+    }
+
+    return {
+        friendly,
+        timezone,
+    };
+};

src/i18n/strings/en_EN.json

@@ -1426,6 +1426,7 @@
         "element_call_video_rooms": "Element Call video rooms",
         "experimental_description": "Feeling experimental? Try out our latest ideas in development. These features are not finalised; they may be unstable, may change, or may be dropped altogether. <a>Learn more</a>.",
         "experimental_section": "Early previews",
+        "extended_profiles_msc_support": "Requires your server to support MSC4133",
         "feature_disable_call_per_sender_encryption": "Disable per-sender encryption for Element Call",
         "feature_wysiwyg_composer_description": "Use rich text instead of Markdown in the message composer.",
         "group_calls": "New group call experience",
@@ -2719,6 +2720,7 @@
             "keyboard_view_shortcuts_button": "To view all keyboard shortcuts, <a>click here</a>.",
             "media_heading": "Images, GIFs and videos",
             "presence_description": "Share your activity and status with others.",
+            "publish_timezone": "Publish timezone on public profile",
             "rm_lifetime": "Read Marker lifetime (ms)",
             "rm_lifetime_offscreen": "Read Marker off-screen lifetime (ms)",
             "room_directory_heading": "Room directory",

src/settings/Settings.tsx

@@ -8,6 +8,7 @@ Please see LICENSE files in the repository root for full details.
 */
 
 import React, { ReactNode } from "react";
+import { UNSTABLE_MSC4133_EXTENDED_PROFILES } from "matrix-js-sdk/src/matrix";
 
 import { _t, _td, TranslationKey } from "../languageHandler";
 import {
@@ -646,6 +647,19 @@ export const SETTINGS: { [setting: string]: ISetting } = {
         displayName: _td("settings|preferences|user_timezone"),
         default: "",
     },
+    "userTimezonePublish": {
+        // This is per-device so you can avoid having devices overwrite each other.
+        supportedLevels: LEVELS_DEVICE_ONLY_SETTINGS,
+        displayName: _td("settings|preferences|publish_timezone"),
+        default: false,
+        controller: new ServerSupportUnstableFeatureController(
+            "userTimezonePublish",
+            defaultWatchManager,
+            [[UNSTABLE_MSC4133_EXTENDED_PROFILES]],
+            undefined,
+            _td("labs|extended_profiles_msc_support"),
+        ),
+    },
     "autoplayGifs": {
         supportedLevels: LEVELS_ACCOUNT_SETTINGS,
         displayName: _td("settings|autoplay_gifs"),

test/components/structures/LoggedInView-test.tsx

@@ -24,6 +24,7 @@ import SettingsStore from "../../../src/settings/SettingsStore";
 import { SettingLevel } from "../../../src/settings/SettingLevel";
 import { Action } from "../../../src/dispatcher/actions";
 import Modal from "../../../src/Modal";
+import { SETTINGS } from "../../../src/settings/Settings";
 
 describe("<LoggedInView />", () => {
     const userId = "@alice:domain.org";
@@ -37,6 +38,9 @@ describe("<LoggedInView />", () => {
         setPushRuleEnabled: jest.fn(),
         setPushRuleActions: jest.fn(),
         getCrypto: jest.fn().mockReturnValue(undefined),
+        setExtendedProfileProperty: jest.fn().mockResolvedValue(undefined),
+        deleteExtendedProfileProperty: jest.fn().mockResolvedValue(undefined),
+        doesServerSupportExtendedProfiles: jest.fn().mockResolvedValue(true),
     });
     const mediaHandler = new MediaHandler(mockClient);
     const mockSdkContext = new TestSdkContext();
@@ -409,4 +413,48 @@ describe("<LoggedInView />", () => {
         await userEvent.keyboard("{Control>}{Alt>}h</Alt>{/Control}");
         expect(defaultDispatcher.dispatch).not.toHaveBeenCalledWith({ action: Action.ViewHomePage });
     });
+
+    describe("timezone updates", () => {
+        const userTimezone = "Europe/London";
+        const originalController = SETTINGS["userTimezonePublish"].controller;
+
+        beforeEach(async () => {
+            SETTINGS["userTimezonePublish"].controller = undefined;
+            await SettingsStore.setValue("userTimezonePublish", null, SettingLevel.DEVICE, false);
+            await SettingsStore.setValue("userTimezone", null, SettingLevel.DEVICE, userTimezone);
+        });
+
+        afterEach(() => {
+            SETTINGS["userTimezonePublish"].controller = originalController;
+        });
+
+        it("does not update the timezone when userTimezonePublish is off", async () => {
+            getComponent();
+            await SettingsStore.setValue("userTimezonePublish", null, SettingLevel.DEVICE, false);
+            expect(mockClient.deleteExtendedProfileProperty).toHaveBeenCalledWith("us.cloke.msc4175.tz");
+            expect(mockClient.setExtendedProfileProperty).not.toHaveBeenCalled();
+        });
+        it("should set the user timezone when userTimezonePublish is enabled", async () => {
+            getComponent();
+            await SettingsStore.setValue("userTimezonePublish", null, SettingLevel.DEVICE, true);
+            expect(mockClient.setExtendedProfileProperty).toHaveBeenCalledWith("us.cloke.msc4175.tz", userTimezone);
+        });
+
+        it("should set the user timezone when the timezone is changed", async () => {
+            const newTimezone = "Europe/Paris";
+            getComponent();
+            await SettingsStore.setValue("userTimezonePublish", null, SettingLevel.DEVICE, true);
+            expect(mockClient.setExtendedProfileProperty).toHaveBeenCalledWith("us.cloke.msc4175.tz", userTimezone);
+            await SettingsStore.setValue("userTimezone", null, SettingLevel.DEVICE, newTimezone);
+            expect(mockClient.setExtendedProfileProperty).toHaveBeenCalledWith("us.cloke.msc4175.tz", newTimezone);
+        });
+
+        it("should clear the timezone when the publish feature is turned off", async () => {
+            getComponent();
+            await SettingsStore.setValue("userTimezonePublish", null, SettingLevel.DEVICE, true);
+            expect(mockClient.setExtendedProfileProperty).toHaveBeenCalledWith("us.cloke.msc4175.tz", userTimezone);
+            await SettingsStore.setValue("userTimezonePublish", null, SettingLevel.DEVICE, false);
+            expect(mockClient.deleteExtendedProfileProperty).toHaveBeenCalledWith("us.cloke.msc4175.tz");
+        });
+    });
 });

test/components/views/right_panel/UserInfo-test.tsx

@@ -92,6 +92,7 @@ let mockRoom: Mocked<Room>;
 let mockSpace: Mocked<Room>;
 let mockClient: Mocked<MatrixClient>;
 let mockCrypto: Mocked<CryptoApi>;
+const origDate = global.Date.prototype.toLocaleString;
 
 beforeEach(() => {
     mockRoom = mocked({
@@ -150,6 +151,8 @@ beforeEach(() => {
         isSynapseAdministrator: jest.fn().mockResolvedValue(false),
         isRoomEncrypted: jest.fn().mockReturnValue(false),
         doesServerSupportUnstableFeature: jest.fn().mockReturnValue(false),
+        doesServerSupportExtendedProfiles: jest.fn().mockResolvedValue(false),
+        getExtendedProfileProperty: jest.fn().mockRejectedValue(new Error("Not supported")),
         mxcUrlToHttp: jest.fn().mockReturnValue("mock-mxcUrlToHttp"),
         removeListener: jest.fn(),
         currentState: {
@@ -229,6 +232,28 @@ describe("<UserInfo />", () => {
             expect(screen.getByRole("heading", { name: defaultUserId })).toBeInTheDocument();
         });
 
+        it("renders user timezone if set", async () => {
+            // For timezone, force a consistent locale.
+            jest.spyOn(global.Date.prototype, "toLocaleString").mockImplementation(function (
+                this: Date,
+                _locale,
+                opts,
+            ) {
+                return origDate.call(this, "en-US", opts);
+            });
+            mockClient.doesServerSupportExtendedProfiles.mockResolvedValue(true);
+            mockClient.getExtendedProfileProperty.mockResolvedValue("Europe/London");
+            renderComponent();
+            await expect(screen.findByText(/\d\d:\d\d (AM|PM)/)).resolves.toBeInTheDocument();
+        });
+
+        it("does not renders user timezone if timezone is invalid", async () => {
+            mockClient.doesServerSupportExtendedProfiles.mockResolvedValue(true);
+            mockClient.getExtendedProfileProperty.mockResolvedValue("invalid-tz");
+            renderComponent();
+            expect(screen.queryByText(/\d\d:\d\d (AM|PM)/)).not.toBeInTheDocument();
+        });
+
         it("renders encryption info panel without pending verification", () => {
             renderComponent({ phase: RightPanelPhases.EncryptionPanel });
             expect(screen.getByRole("heading", { name: /encryption/i })).toBeInTheDocument();