/*
Copyright 2024 New Vector Ltd.
Copyright 2022 The Matrix.org Foundation C.I.C.

SPDX-License-Identifier: AGPL-3.0-only OR GPL-3.0-only
Please see LICENSE files in the repository root for full details.
*/

import React from "react";
import { render, screen, act, fireEvent, waitFor, getByRole, RenderResult } from "@testing-library/react";
import { mocked, Mocked } from "jest-mock";
import {
    EventType,
    RoomType,
    Room,
    RoomStateEvent,
    PendingEventOrdering,
    ISearchResults,
    IContent,
} from "matrix-js-sdk/src/matrix";
import { KnownMembership } from "matrix-js-sdk/src/types";
import { CallType } from "matrix-js-sdk/src/webrtc/call";
import { ClientWidgetApi, Widget } from "matrix-widget-api";
import EventEmitter from "events";
import { setupJestCanvasMock } from "jest-canvas-mock";
import { ViewRoomOpts } from "@matrix-org/react-sdk-module-api/lib/lifecycles/RoomViewLifecycle";
import { MatrixRTCSession, MatrixRTCSessionManagerEvents } from "matrix-js-sdk/src/matrixrtc";

import type { MatrixClient, MatrixEvent, RoomMember } from "matrix-js-sdk/src/matrix";
import type { MatrixCall } from "matrix-js-sdk/src/webrtc/call";
import {
    stubClient,
    mkRoomMember,
    setupAsyncStoreWithClient,
    resetAsyncStoreWithClient,
    mockPlatformPeg,
    mkEvent,
    filterConsole,
} from "../../../test-utils";
import { MatrixClientPeg } from "../../../../src/MatrixClientPeg";
import DMRoomMap from "../../../../src/utils/DMRoomMap";
import RoomHeader, { IProps as RoomHeaderProps } from "../../../../src/components/views/rooms/LegacyRoomHeader";
import { E2EStatus } from "../../../../src/utils/ShieldUtils";
import { IRoomState } from "../../../../src/components/structures/RoomView";
import RoomContext from "../../../../src/contexts/RoomContext";
import SdkConfig from "../../../../src/SdkConfig";
import SettingsStore from "../../../../src/settings/SettingsStore";
import { ElementCall, JitsiCall } from "../../../../src/models/Call";
import { CallStore } from "../../../../src/stores/CallStore";
import LegacyCallHandler from "../../../../src/LegacyCallHandler";
import defaultDispatcher from "../../../../src/dispatcher/dispatcher";
import { Action } from "../../../../src/dispatcher/actions";
import WidgetStore from "../../../../src/stores/WidgetStore";
import { WidgetMessagingStore } from "../../../../src/stores/widgets/WidgetMessagingStore";
import MediaDeviceHandler, { MediaDeviceKindEnum } from "../../../../src/MediaDeviceHandler";
import { shouldShowComponent } from "../../../../src/customisations/helpers/UIComponents";
import { UIComponent } from "../../../../src/settings/UIFeature";
import WidgetUtils from "../../../../src/utils/WidgetUtils";
import { ElementWidgetActions } from "../../../../src/stores/widgets/ElementWidgetActions";
import { SearchScope } from "../../../../src/Searching";

jest.mock("../../../../src/customisations/helpers/UIComponents", () => ({
    shouldShowComponent: jest.fn(),
}));

describe("LegacyRoomHeader", () => {
    let client: Mocked<MatrixClient>;
    let room: Room;
    let alice: RoomMember;
    let bob: RoomMember;
    let carol: RoomMember;

    filterConsole(
        "Age for event was not available, using `now - origin_server_ts` as a fallback. If the device clock is not correct issues might occur.",
    );

    beforeEach(async () => {
        // some of our tests rely on the jest canvas mock, and `afterEach` will have reset the mock, so we need to
        // restore it.
        setupJestCanvasMock();

        mockPlatformPeg({ supportsJitsiScreensharing: () => true });

        stubClient();
        client = mocked(MatrixClientPeg.safeGet());
        client.getUserId.mockReturnValue("@alice:example.org");

        room = new Room("!1:example.org", client, "@alice:example.org", {
            pendingEventOrdering: PendingEventOrdering.Detached,
        });
        room.currentState.setStateEvents([mkCreationEvent(room.roomId, "@alice:example.org")]);

        client.getRoom.mockImplementation((roomId) => (roomId === room.roomId ? room : null));
        client.getRooms.mockReturnValue([room]);
        client.reEmitter.reEmit(room, [RoomStateEvent.Events]);
        client.sendStateEvent.mockImplementation(async (roomId, eventType, content, stateKey = "") => {
            if (roomId !== room.roomId) throw new Error("Unknown room");
            const event = mkEvent({
                event: true,
                type: eventType,
                room: roomId,
                user: alice.userId,
                skey: stateKey,
                content: content as IContent,
            });
            room.addLiveEvents([event]);
            return { event_id: event.getId()! };
        });

        alice = mkRoomMember(room.roomId, "@alice:example.org");
        bob = mkRoomMember(room.roomId, "@bob:example.org");
        carol = mkRoomMember(room.roomId, "@carol:example.org");

        client.getRoom.mockImplementation((roomId) => (roomId === room.roomId ? room : null));
        client.getRooms.mockReturnValue([room]);
        client.reEmitter.reEmit(room, [RoomStateEvent.Events]);

        await Promise.all(
            [CallStore.instance, WidgetStore.instance].map((store) => setupAsyncStoreWithClient(store, client)),
        );

        jest.spyOn(MediaDeviceHandler, "getDevices").mockResolvedValue({
            [MediaDeviceKindEnum.AudioInput]: [],
            [MediaDeviceKindEnum.VideoInput]: [],
            [MediaDeviceKindEnum.AudioOutput]: [],
        });

        DMRoomMap.makeShared(client);
        jest.spyOn(DMRoomMap.shared(), "getUserIdForRoomId").mockReturnValue(carol.userId);
    });

    afterEach(async () => {
        await Promise.all([CallStore.instance, WidgetStore.instance].map(resetAsyncStoreWithClient));
        client.reEmitter.stopReEmitting(room, [RoomStateEvent.Events]);
        jest.restoreAllMocks();
        SdkConfig.reset();
    });

    const mockRoomType = (type: string) => {
        jest.spyOn(room, "getType").mockReturnValue(type);
    };
    const mockRoomMembers = (members: RoomMember[]) => {
        jest.spyOn(room, "getJoinedMembers").mockReturnValue(members);
        jest.spyOn(room, "getMember").mockImplementation(
            (userId) => members.find((member) => member.userId === userId) ?? null,
        );
    };
    const mockEnabledSettings = (settings: string[]) => {
        jest.spyOn(SettingsStore, "getValue").mockImplementation((settingName) => settings.includes(settingName));
    };
    const mockEventPowerLevels = (events: { [eventType: string]: number }) => {
        room.currentState.setStateEvents([
            mkEvent({
                event: true,
                type: EventType.RoomPowerLevels,
                room: room.roomId,
                user: alice.userId,
                skey: "",
                content: { events, state_default: 0 },
            }),
        ]);
    };
    const mockLegacyCall = () => {
        jest.spyOn(LegacyCallHandler.instance, "getCallForRoom").mockReturnValue({} as unknown as MatrixCall);
    };
    const withCall = async (fn: (call: ElementCall) => void | Promise<void>): Promise<void> => {
        await ElementCall.create(room);
        const call = CallStore.instance.getCall(room.roomId);
        if (!(call instanceof ElementCall)) throw new Error("Failed to create call");

        const widget = new Widget(call.widget);

        const eventEmitter = new EventEmitter();
        const messaging = {
            on: eventEmitter.on.bind(eventEmitter),
            off: eventEmitter.off.bind(eventEmitter),
            once: eventEmitter.once.bind(eventEmitter),
            emit: eventEmitter.emit.bind(eventEmitter),
            stop: jest.fn(),
            transport: {
                send: jest.fn(),
                reply: jest.fn(),
            },
        } as unknown as Mocked<ClientWidgetApi>;
        WidgetMessagingStore.instance.storeMessaging(widget, call.roomId, messaging);

        await fn(call);

        call.destroy();
        WidgetMessagingStore.instance.stopMessaging(widget, call.roomId);
    };

    const renderHeader = (props: Partial<RoomHeaderProps> = {}, roomContext: Partial<IRoomState> = {}) => {
        render(
            <RoomContext.Provider value={{ ...roomContext, room } as IRoomState}>
                <RoomHeader
                    room={room}
                    inRoom={true}
                    onSearchClick={() => {}}
                    onInviteClick={null}
                    onForgetClick={() => {}}
                    onAppsClick={() => {}}
                    e2eStatus={E2EStatus.Normal}
                    appsShown={true}
                    searchInfo={{
                        searchId: Math.random(),
                        promise: new Promise<ISearchResults>(() => {}),
                        term: "",
                        scope: SearchScope.Room,
                        count: 0,
                    }}
                    viewingCall={false}
                    activeCall={null}
                    {...props}
                />
            </RoomContext.Provider>,
        );
    };

    it("hides call buttons in video rooms", () => {
        mockRoomType(RoomType.UnstableCall);
        mockEnabledSettings(["showCallButtonsInComposer", "feature_video_rooms", "feature_element_call_video_rooms"]);

        renderHeader();
        expect(screen.queryByRole("button", { name: /call/i })).toBeNull();
    });

    it("hides call buttons if showCallButtonsInComposer is disabled", () => {
        mockEnabledSettings([]);

        renderHeader();
        expect(screen.queryByRole("button", { name: /call/i })).toBeNull();
    });

    it(
        "hides the voice call button and disables the video call button if configured to use Element Call exclusively " +
            "and there's an ongoing call",
        async () => {
            mockEnabledSettings(["showCallButtonsInComposer", "feature_group_calls"]);
            SdkConfig.put({
                element_call: { url: "https://call.element.io", use_exclusively: true, brand: "Element Call" },
            });
            await ElementCall.create(room);

            renderHeader();
            expect(screen.queryByRole("button", { name: "Voice call" })).toBeNull();
            expect(screen.getByRole("button", { name: "Video call" })).toHaveAttribute("aria-disabled", "true");
        },
    );

    it(
        "hides the voice call button and starts an Element call when the video call button is pressed if configured to " +
            "use Element Call exclusively",
        async () => {
            mockEnabledSettings(["showCallButtonsInComposer", "feature_group_calls"]);
            SdkConfig.put({
                element_call: { url: "https://call.element.io", use_exclusively: true, brand: "Element Call" },
            });

            renderHeader();
            expect(screen.queryByRole("button", { name: "Voice call" })).toBeNull();

            const dispatcherSpy = jest.fn();
            const dispatcherRef = defaultDispatcher.register(dispatcherSpy);
            fireEvent.click(screen.getByRole("button", { name: "Video call" }));
            await waitFor(() =>
                expect(dispatcherSpy).toHaveBeenCalledWith({
                    action: Action.ViewRoom,
                    room_id: room.roomId,
                    skipLobby: false,
                    view_call: true,
                }),
            );
            defaultDispatcher.unregister(dispatcherRef);
        },
    );

    it(
        "hides the voice call button and disables the video call button if configured to use Element Call exclusively " +
            "and the user lacks permission",
        () => {
            mockEnabledSettings(["showCallButtonsInComposer", "feature_group_calls"]);
            SdkConfig.put({
                element_call: { url: "https://call.element.io", use_exclusively: true, brand: "Element Call" },
            });
            mockEventPowerLevels({ [ElementCall.CALL_EVENT_TYPE.name]: 100 });

            renderHeader();
            expect(screen.queryByRole("button", { name: "Voice call" })).toBeNull();
            expect(screen.getByRole("button", { name: "Video call" })).toHaveAttribute("aria-disabled", "true");
        },
    );

    it("disables call buttons in the new group call experience if there's an ongoing Element call", async () => {
        mockEnabledSettings(["showCallButtonsInComposer", "feature_group_calls"]);
        await ElementCall.create(room);

        renderHeader();
        expect(screen.getByRole("button", { name: "Voice call" })).toHaveAttribute("aria-disabled", "true");
        expect(screen.getByRole("button", { name: "Video call" })).toHaveAttribute("aria-disabled", "true");
    });

    it("disables call buttons in the new group call experience if there's an ongoing legacy 1:1 call", () => {
        mockEnabledSettings(["showCallButtonsInComposer", "feature_group_calls"]);
        mockLegacyCall();

        renderHeader();
        expect(screen.getByRole("button", { name: "Voice call" })).toHaveAttribute("aria-disabled", "true");
        expect(screen.getByRole("button", { name: "Video call" })).toHaveAttribute("aria-disabled", "true");
    });

    it("disables call buttons in the new group call experience if there's an existing Jitsi widget", async () => {
        mockEnabledSettings(["showCallButtonsInComposer", "feature_group_calls"]);
        await JitsiCall.create(room);

        renderHeader();
        expect(screen.getByRole("button", { name: "Voice call" })).toHaveAttribute("aria-disabled", "true");
        expect(screen.getByRole("button", { name: "Video call" })).toHaveAttribute("aria-disabled", "true");
    });

    it("disables call buttons in the new group call experience if there's no other members", () => {
        mockEnabledSettings(["showCallButtonsInComposer", "feature_group_calls"]);

        renderHeader();
        expect(screen.getByRole("button", { name: "Voice call" })).toHaveAttribute("aria-disabled", "true");
        expect(screen.getByRole("button", { name: "Video call" })).toHaveAttribute("aria-disabled", "true");
    });

    it(
        "starts a legacy 1:1 call when call buttons are pressed in the new group call experience if there's 1 other " +
            "member",
        async () => {
            mockEnabledSettings(["showCallButtonsInComposer", "feature_group_calls"]);
            mockRoomMembers([alice, bob]);

            renderHeader();

            const placeCallSpy = jest.spyOn(LegacyCallHandler.instance, "placeCall").mockResolvedValue(undefined);
            fireEvent.click(screen.getByRole("button", { name: "Voice call" }));
            await act(() => Promise.resolve()); // Allow effects to settle
            expect(placeCallSpy).toHaveBeenCalledWith(room.roomId, CallType.Voice);

            placeCallSpy.mockClear();
            fireEvent.click(screen.getByRole("button", { name: "Video call" }));
            await act(() => Promise.resolve()); // Allow effects to settle
            fireEvent.click(screen.getByRole("menuitem", { name: "Legacy video call" }));
            await act(() => Promise.resolve()); // Allow effects to settle
            expect(placeCallSpy).toHaveBeenCalledWith(room.roomId, CallType.Video);
        },
    );

    it(
        "creates a Jitsi widget when call buttons are pressed in the new group call experience if the user lacks " +
            "permission to start Element calls",
        async () => {
            mockEnabledSettings(["showCallButtonsInComposer", "feature_group_calls"]);
            mockRoomMembers([alice, bob, carol]);
            mockEventPowerLevels({ [ElementCall.CALL_EVENT_TYPE.name]: 100 });

            renderHeader();

            const placeCallSpy = jest.spyOn(LegacyCallHandler.instance, "placeCall").mockResolvedValue(undefined);
            fireEvent.click(screen.getByRole("button", { name: "Voice call" }));
            await act(() => Promise.resolve()); // Allow effects to settle
            expect(placeCallSpy).toHaveBeenCalledWith(room.roomId, CallType.Voice);

            placeCallSpy.mockClear();
            fireEvent.click(screen.getByRole("button", { name: "Video call" }));
            await act(() => Promise.resolve()); // Allow effects to settle
            expect(placeCallSpy).toHaveBeenCalledWith(room.roomId, CallType.Video);
        },
    );

    it(
        "creates a Jitsi widget when the voice call button is pressed and shows a menu when the video call button is " +
            "pressed in the new group call experience",
        async () => {
            mockEnabledSettings(["showCallButtonsInComposer", "feature_group_calls"]);
            mockRoomMembers([alice, bob, carol]);

            renderHeader();

            const placeCallSpy = jest.spyOn(LegacyCallHandler.instance, "placeCall").mockResolvedValue(undefined);
            fireEvent.click(screen.getByRole("button", { name: "Voice call" }));
            await act(() => Promise.resolve()); // Allow effects to settle
            expect(placeCallSpy).toHaveBeenCalledWith(room.roomId, CallType.Voice);

            // First try creating a Jitsi widget from the menu
            placeCallSpy.mockClear();
            fireEvent.click(screen.getByRole("button", { name: "Video call" }));
            fireEvent.click(getByRole(screen.getByRole("menu"), "menuitem", { name: /jitsi/i }));
            await act(() => Promise.resolve()); // Allow effects to settle
            expect(placeCallSpy).toHaveBeenCalledWith(room.roomId, CallType.Video);

            // Then try starting an Element call from the menu
            const dispatcherSpy = jest.fn();
            const dispatcherRef = defaultDispatcher.register(dispatcherSpy);
            fireEvent.click(screen.getByRole("button", { name: "Video call" }));
            fireEvent.click(getByRole(screen.getByRole("menu"), "menuitem", { name: /element/i }));
            await waitFor(() =>
                expect(dispatcherSpy).toHaveBeenCalledWith({
                    action: Action.ViewRoom,
                    room_id: room.roomId,
                    skipLobby: false,
                    view_call: true,
                }),
            );
            defaultDispatcher.unregister(dispatcherRef);
        },
    );

    it(
        "disables the voice call button and starts an Element call when the video call button is pressed in the new " +
            "group call experience if the user lacks permission to edit widgets",
        async () => {
            mockEnabledSettings(["showCallButtonsInComposer", "feature_group_calls"]);
            mockRoomMembers([alice, bob, carol]);
            mockEventPowerLevels({ "im.vector.modular.widgets": 100 });

            renderHeader();
            expect(screen.getByRole("button", { name: "Voice call" })).toHaveAttribute("aria-disabled", "true");

            const dispatcherSpy = jest.fn();
            const dispatcherRef = defaultDispatcher.register(dispatcherSpy);
            fireEvent.click(screen.getByRole("button", { name: "Video call" }));
            await waitFor(() =>
                expect(dispatcherSpy).toHaveBeenCalledWith({
                    action: Action.ViewRoom,
                    room_id: room.roomId,
                    skipLobby: false,
                    view_call: true,
                }),
            );
            defaultDispatcher.unregister(dispatcherRef);
        },
    );

    it("disables call buttons in the new group call experience if the user lacks permission", () => {
        mockEnabledSettings(["showCallButtonsInComposer", "feature_group_calls"]);
        mockRoomMembers([alice, bob, carol]);
        mockEventPowerLevels({ [ElementCall.CALL_EVENT_TYPE.name]: 100, "im.vector.modular.widgets": 100 });

        renderHeader();
        expect(screen.getByRole("button", { name: "Voice call" })).toHaveAttribute("aria-disabled", "true");
        expect(screen.getByRole("button", { name: "Video call" })).toHaveAttribute("aria-disabled", "true");
    });

    it("disables call buttons if there's an ongoing legacy 1:1 call", () => {
        mockEnabledSettings(["showCallButtonsInComposer"]);
        mockLegacyCall();

        renderHeader();
        expect(screen.getByRole("button", { name: "Voice call" })).toHaveAttribute("aria-disabled", "true");
        expect(screen.getByRole("button", { name: "Video call" })).toHaveAttribute("aria-disabled", "true");
    });

    it("disables call buttons if there's an existing Jitsi widget", async () => {
        mockEnabledSettings(["showCallButtonsInComposer"]);
        await JitsiCall.create(room);

        renderHeader();
        expect(screen.getByRole("button", { name: "Voice call" })).toHaveAttribute("aria-disabled", "true");
        expect(screen.getByRole("button", { name: "Video call" })).toHaveAttribute("aria-disabled", "true");
    });

    it("disables call buttons if there's no other members", () => {
        mockEnabledSettings(["showCallButtonsInComposer"]);

        renderHeader();
        expect(screen.getByRole("button", { name: "Voice call" })).toHaveAttribute("aria-disabled", "true");
        expect(screen.getByRole("button", { name: "Video call" })).toHaveAttribute("aria-disabled", "true");
    });

    it("starts a legacy 1:1 call when call buttons are pressed if there's 1 other member", async () => {
        mockEnabledSettings(["showCallButtonsInComposer"]);
        mockRoomMembers([alice, bob]);
        mockEventPowerLevels({ "im.vector.modular.widgets": 100 }); // Just to verify that it doesn't try to use Jitsi

        renderHeader();

        const placeCallSpy = jest.spyOn(LegacyCallHandler.instance, "placeCall").mockResolvedValue(undefined);
        fireEvent.click(screen.getByRole("button", { name: "Voice call" }));
        await act(() => Promise.resolve()); // Allow effects to settle
        expect(placeCallSpy).toHaveBeenCalledWith(room.roomId, CallType.Voice);

        placeCallSpy.mockClear();
        fireEvent.click(screen.getByRole("button", { name: "Video call" }));
        await act(() => Promise.resolve()); // Allow effects to settle
        expect(placeCallSpy).toHaveBeenCalledWith(room.roomId, CallType.Video);
    });

    it("creates a Jitsi widget when call buttons are pressed", async () => {
        mockEnabledSettings(["showCallButtonsInComposer"]);
        mockRoomMembers([alice, bob, carol]);

        renderHeader();

        const placeCallSpy = jest.spyOn(LegacyCallHandler.instance, "placeCall").mockResolvedValue(undefined);
        fireEvent.click(screen.getByRole("button", { name: "Voice call" }));
        await act(() => Promise.resolve()); // Allow effects to settle
        expect(placeCallSpy).toHaveBeenCalledWith(room.roomId, CallType.Voice);

        placeCallSpy.mockClear();
        fireEvent.click(screen.getByRole("button", { name: "Video call" }));
        await act(() => Promise.resolve()); // Allow effects to settle
        expect(placeCallSpy).toHaveBeenCalledWith(room.roomId, CallType.Video);
    });

    it("disables call buttons if the user lacks permission", () => {
        mockEnabledSettings(["showCallButtonsInComposer"]);
        mockRoomMembers([alice, bob, carol]);
        mockEventPowerLevels({ "im.vector.modular.widgets": 100 });

        renderHeader();
        expect(screen.getByRole("button", { name: "Voice call" })).toHaveAttribute("aria-disabled", "true");
        expect(screen.getByRole("button", { name: "Video call" })).toHaveAttribute("aria-disabled", "true");
    });

    it("shows a close button when viewing a call lobby that returns to the timeline when pressed", async () => {
        mockEnabledSettings(["feature_group_calls"]);

        renderHeader({ viewingCall: true });

        const dispatcherSpy = jest.fn();
        const dispatcherRef = defaultDispatcher.register(dispatcherSpy);
        fireEvent.click(screen.getByRole("button", { name: /close/i }));
        await waitFor(() =>
            expect(dispatcherSpy).toHaveBeenCalledWith({
                action: Action.ViewRoom,
                room_id: room.roomId,
                view_call: false,
            }),
        );
        defaultDispatcher.unregister(dispatcherRef);
    });

    it("shows a reduce button when viewing a call that returns to the timeline when pressed", async () => {
        mockEnabledSettings(["feature_group_calls"]);

        await withCall(async (call) => {
            renderHeader({ viewingCall: true, activeCall: call });

            const dispatcherSpy = jest.fn();
            const dispatcherRef = defaultDispatcher.register(dispatcherSpy);
            fireEvent.click(screen.getByRole("button", { name: /timeline/i }));
            await waitFor(() =>
                expect(dispatcherSpy).toHaveBeenCalledWith({
                    action: Action.ViewRoom,
                    room_id: room.roomId,
                    view_call: false,
                }),
            );
            defaultDispatcher.unregister(dispatcherRef);
        });
    });

    it("shows a layout button when viewing a call that shows a menu when pressed", async () => {
        mockEnabledSettings(["feature_group_calls"]);

        await withCall(async (call) => {
            // We set the call to skip lobby because otherwise the connection will wait until
            // the user clicks the "join" button, inside the widget lobby which is hard to mock.
            call.widget.data = { ...call.widget.data, skipLobby: true };
            // The connect method will wait until the session actually connected. Otherwise it will timeout.
            // Emitting SessionStarted will trigger the connect method to resolve.
            setTimeout(
                () =>
                    client.matrixRTC.emit(MatrixRTCSessionManagerEvents.SessionStarted, room.roomId, {
                        room,
                    } as MatrixRTCSession),
                100,
            );
            await call.start();

            const messaging = WidgetMessagingStore.instance.getMessagingForUid(WidgetUtils.getWidgetUid(call.widget))!;
            renderHeader({ viewingCall: true, activeCall: call });

            // Should start with Freedom selected
            fireEvent.click(screen.getByRole("button", { name: /layout/i }));
            screen.getByRole("menuitemradio", { name: "Freedom", checked: true });

            // Clicking Spotlight should tell the widget to switch and close the menu
            fireEvent.click(screen.getByRole("menuitemradio", { name: "Spotlight" }));
            expect(mocked(messaging.transport).send).toHaveBeenCalledWith(ElementWidgetActions.SpotlightLayout, {});
            expect(screen.queryByRole("menu")).toBeNull();

            // When the widget responds and the user reopens the menu, they should see Spotlight selected
            act(() => {
                messaging.emit(
                    `action:${ElementWidgetActions.SpotlightLayout}`,
                    new CustomEvent("widgetapirequest", { detail: { data: {} } }),
                );
            });
            fireEvent.click(screen.getByRole("button", { name: /layout/i }));
            screen.getByRole("menuitemradio", { name: "Spotlight", checked: true });

            // Now try switching back to Freedom
            fireEvent.click(screen.getByRole("menuitemradio", { name: "Freedom" }));
            expect(mocked(messaging.transport).send).toHaveBeenCalledWith(ElementWidgetActions.TileLayout, {});
            expect(screen.queryByRole("menu")).toBeNull();

            // When the widget responds and the user reopens the menu, they should see Freedom selected
            act(() => {
                messaging.emit(
                    `action:${ElementWidgetActions.TileLayout}`,
                    new CustomEvent("widgetapirequest", { detail: { data: {} } }),
                );
            });
            fireEvent.click(screen.getByRole("button", { name: /layout/i }));
            screen.getByRole("menuitemradio", { name: "Freedom", checked: true });
        });
    });

    it("shows an invite button in video rooms", () => {
        mockEnabledSettings(["feature_video_rooms", "feature_element_call_video_rooms"]);
        mockRoomType(RoomType.UnstableCall);

        const onInviteClick = jest.fn();
        renderHeader({ onInviteClick, viewingCall: true });

        fireEvent.click(screen.getByRole("button", { name: /invite/i }));
        expect(onInviteClick).toHaveBeenCalled();
    });

    it("hides the invite button in non-video rooms when viewing a call", () => {
        renderHeader({ onInviteClick: () => {}, viewingCall: true });

        expect(screen.queryByRole("button", { name: /invite/i })).toBeNull();
    });

    it("shows the room avatar in a room with only ourselves", () => {
        // When we render a non-DM room with 1 person in it
        const room = createRoom({ name: "X Room", isDm: false, userIds: [] });
        const rendered = mountHeader(room);

        // Then the room's avatar is the initial of its name
        const initial = rendered.container.querySelector(".mx_BaseAvatar");
        expect(initial).toHaveTextContent("X");
    });

    it("shows the room avatar in a room with 2 people", () => {
        // When we render a non-DM room with 2 people in it
        const room = createRoom({ name: "Y Room", isDm: false, userIds: ["other"] });
        const rendered = mountHeader(room);

        // Then the room's avatar is the initial of its name
        const initial = rendered.container.querySelector(".mx_BaseAvatar");
        expect(initial).toHaveTextContent("Y");
    });

    it("shows the room avatar in a room with >2 people", () => {
        // When we render a non-DM room with 3 people in it
        const room = createRoom({ name: "Z Room", isDm: false, userIds: ["other1", "other2"] });
        const rendered = mountHeader(room);

        // Then the room's avatar is the initial of its name
        const initial = rendered.container.querySelector(".mx_BaseAvatar");
        expect(initial).toHaveTextContent("Z");
    });

    it("shows the room avatar in a DM with only ourselves", () => {
        // When we render a non-DM room with 1 person in it
        const room = createRoom({ name: "Z Room", isDm: true, userIds: [] });
        const rendered = mountHeader(room);

        // Then the room's avatar is the initial of its name
        const initial = rendered.container.querySelector(".mx_BaseAvatar");
        expect(initial).toHaveTextContent("Z");
    });

    it("shows the user avatar in a DM with 2 people", () => {
        // Note: this is the interesting case - this is the ONLY
        //       time we should use the user's avatar.

        // When we render a DM room with only 2 people in it
        const room = createRoom({ name: "Y Room", isDm: true, userIds: ["other"] });
        const rendered = mountHeader(room);

        // Then we use the other user's avatar as our room's image avatar
        const image = rendered.container.querySelector(".mx_BaseAvatar img");
        expect(image).toHaveAttribute("src", "http://this.is.a.url/example.org/other");
    });

    it("shows the room avatar in a DM with >2 people", () => {
        // When we render a DM room with 3 people in it
        const room = createRoom({
            name: "Z Room",
            isDm: true,
            userIds: ["other1", "other2"],
        });
        const rendered = mountHeader(room);

        // Then the room's avatar is the initial of its name
        const initial = rendered.container.querySelector(".mx_BaseAvatar");
        expect(initial).toHaveTextContent("Z");
    });

    it("renders call buttons normally", () => {
        const room = createRoom({ name: "Room", isDm: false, userIds: ["other"] });
        const wrapper = mountHeader(room);

        expect(wrapper.container.querySelector('[aria-label="Voice call"]')).toBeDefined();
        expect(wrapper.container.querySelector('[aria-label="Video call"]')).toBeDefined();
    });

    it("hides call buttons when the room is tombstoned", () => {
        const room = createRoom({ name: "Room", isDm: false, userIds: [] });
        const wrapper = mountHeader(
            room,
            {},
            {
                tombstone: mkEvent({
                    event: true,
                    type: "m.room.tombstone",
                    room: room.roomId,
                    user: "@user1:server",
                    skey: "",
                    content: {},
                    ts: Date.now(),
                }),
            },
        );

        expect(wrapper.container.querySelector('[aria-label="Voice call"]')).toBeFalsy();
        expect(wrapper.container.querySelector('[aria-label="Video call"]')).toBeFalsy();
    });

    it("should render buttons if not passing showButtons (default true)", () => {
        const room = createRoom({ name: "Room", isDm: false, userIds: [] });
        const wrapper = mountHeader(room);
        expect(wrapper.container.querySelector(".mx_LegacyRoomHeader_button")).toBeDefined();
    });

    it("should not render buttons if passing showButtons = false", () => {
        const room = createRoom({ name: "Room", isDm: false, userIds: [] });
        const wrapper = mountHeader(room, { showButtons: false });
        expect(wrapper.container.querySelector(".mx_LegacyRoomHeader_button")).toBeFalsy();
    });

    it("should render the room options context menu if not passing enableRoomOptionsMenu (default true) and UIComponent customisations room options enabled", () => {
        mocked(shouldShowComponent).mockReturnValue(true);
        const room = createRoom({ name: "Room", isDm: false, userIds: [] });
        const wrapper = mountHeader(room);
        expect(shouldShowComponent).toHaveBeenCalledWith(UIComponent.RoomOptionsMenu);
        expect(wrapper.container.querySelector(".mx_LegacyRoomHeader_name.mx_AccessibleButton")).toBeDefined();
    });

    it.each([
        [false, true],
        [true, false],
    ])(
        "should not render the room options context menu if passing enableRoomOptionsMenu = %s and UIComponent customisations room options enable = %s",
        (enableRoomOptionsMenu, showRoomOptionsMenu) => {
            mocked(shouldShowComponent).mockReturnValue(showRoomOptionsMenu);
            const room = createRoom({ name: "Room", isDm: false, userIds: [] });
            const wrapper = mountHeader(room, { enableRoomOptionsMenu });
            expect(wrapper.container.querySelector(".mx_LegacyRoomHeader_name.mx_AccessibleButton")).toBeFalsy();
        },
    );

    it("renders additionalButtons", async () => {
        const additionalButtons: ViewRoomOpts["buttons"] = [
            {
                icon: () => <>test-icon</>,
                id: "test-id",
                label: () => "test-label",
                onClick: () => {},
            },
        ];
        renderHeader({ additionalButtons });
        expect(screen.getByRole("button", { name: "test-icon" })).toBeInTheDocument();
    });

    it("calls onClick-callback on additionalButtons", () => {
        const callback = jest.fn();
        const additionalButtons: ViewRoomOpts["buttons"] = [
            {
                icon: () => <>test-icon</>,
                id: "test-id",
                label: () => "test-label",
                onClick: callback,
            },
        ];
        renderHeader({ additionalButtons });
        fireEvent.click(screen.getByRole("button", { name: "test-icon" }));
        expect(callback).toHaveBeenCalled();
    });
});

interface IRoomCreationInfo {
    name: string;
    isDm: boolean;
    userIds: string[];
}

function createRoom(info: IRoomCreationInfo) {
    stubClient();
    const client: MatrixClient = MatrixClientPeg.safeGet();

    const roomId = "!1234567890:domain";
    const userId = client.getUserId()!;
    if (info.isDm) {
        client.getAccountData = (eventType) => {
            if (eventType === "m.direct") {
                return mkDirectEvent(roomId, userId, info.userIds);
            } else {
                return undefined;
            }
        };
    }

    DMRoomMap.makeShared(client).start();

    const room = new Room(roomId, client, userId, {
        pendingEventOrdering: PendingEventOrdering.Detached,
    });

    const otherJoinEvents: MatrixEvent[] = [];
    for (const otherUserId of info.userIds) {
        otherJoinEvents.push(mkJoinEvent(roomId, otherUserId));
    }

    room.currentState.setStateEvents([
        mkCreationEvent(roomId, userId),
        mkNameEvent(roomId, userId, info.name),
        mkJoinEvent(roomId, userId),
        ...otherJoinEvents,
    ]);
    room.recalculate();

    return room;
}

function mountHeader(room: Room, propsOverride = {}, roomContext?: Partial<IRoomState>): RenderResult {
    const props: RoomHeaderProps = {
        room,
        inRoom: true,
        onSearchClick: () => {},
        onInviteClick: null,
        onForgetClick: () => {},
        onAppsClick: () => {},
        e2eStatus: E2EStatus.Normal,
        appsShown: true,
        searchInfo: {
            searchId: Math.random(),
            promise: new Promise<ISearchResults>(() => {}),
            term: "",
            scope: SearchScope.Room,
            count: 0,
        },
        viewingCall: false,
        activeCall: null,
        ...propsOverride,
    };

    return render(
        <RoomContext.Provider value={{ ...roomContext, room } as IRoomState}>
            <RoomHeader {...props} />
        </RoomContext.Provider>,
    );
}

function mkCreationEvent(roomId: string, userId: string): MatrixEvent {
    return mkEvent({
        event: true,
        type: "m.room.create",
        room: roomId,
        user: userId,
        content: {
            creator: userId,
            room_version: "5",
            predecessor: {
                room_id: "!prevroom",
                event_id: "$someevent",
            },
        },
    });
}

function mkNameEvent(roomId: string, userId: string, name: string): MatrixEvent {
    return mkEvent({
        event: true,
        type: "m.room.name",
        room: roomId,
        user: userId,
        content: { name },
    });
}

function mkJoinEvent(roomId: string, userId: string) {
    const ret = mkEvent({
        event: true,
        type: "m.room.member",
        room: roomId,
        user: userId,
        content: {
            membership: KnownMembership.Join,
            avatar_url: "mxc://example.org/" + userId,
        },
    });
    ret.event.state_key = userId;
    return ret;
}

function mkDirectEvent(roomId: string, userId: string, otherUsers: string[]): MatrixEvent {
    const content: Record<string, string[]> = {};
    for (const otherUserId of otherUsers) {
        content[otherUserId] = [roomId];
    }
    return mkEvent({
        event: true,
        type: "m.direct",
        room: roomId,
        user: userId,
        content,
    });
}