/*
Copyright 2021-2022 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 { EventType, RoomType, JoinRule, Preset, Room, RoomEvent } from "matrix-js-sdk/src/matrix";
import { logger } from "matrix-js-sdk/src/logger";
import React, { useCallback, useContext, useRef, useState } from "react";

import MatrixClientContext from "../../contexts/MatrixClientContext";
import createRoom, { IOpts } from "../../createRoom";
import { shouldShowComponent } from "../../customisations/helpers/UIComponents";
import { Action } from "../../dispatcher/actions";
import defaultDispatcher from "../../dispatcher/dispatcher";
import { ActionPayload } from "../../dispatcher/payloads";
import { ViewRoomPayload } from "../../dispatcher/payloads/ViewRoomPayload";
import * as Email from "../../email";
import { useEventEmitterState } from "../../hooks/useEventEmitter";
import { useMyRoomMembership } from "../../hooks/useRoomMembers";
import { useFeatureEnabled } from "../../hooks/useSettings";
import { useStateArray } from "../../hooks/useStateArray";
import { _t } from "../../languageHandler";
import PosthogTrackers from "../../PosthogTrackers";
import { inviteMultipleToRoom, showRoomInviteDialog } from "../../RoomInvite";
import { UIComponent } from "../../settings/UIFeature";
import { UPDATE_EVENT } from "../../stores/AsyncStore";
import RightPanelStore from "../../stores/right-panel/RightPanelStore";
import { RightPanelPhases } from "../../stores/right-panel/RightPanelStorePhases";
import ResizeNotifier from "../../utils/ResizeNotifier";
import {
    shouldShowSpaceInvite,
    shouldShowSpaceSettings,
    showAddExistingRooms,
    showCreateNewRoom,
    showCreateNewSubspace,
    showSpaceInvite,
    showSpaceSettings,
} from "../../utils/space";
import RoomAvatar from "../views/avatars/RoomAvatar";
import { BetaPill } from "../views/beta/BetaCard";
import IconizedContextMenu, {
    IconizedContextMenuOption,
    IconizedContextMenuOptionList,
} from "../views/context_menus/IconizedContextMenu";
import {
    AddExistingToSpace,
    defaultDmsRenderer,
    defaultRoomsRenderer,
} from "../views/dialogs/AddExistingToSpaceDialog";
import AccessibleButton, { ButtonEvent } from "../views/elements/AccessibleButton";
import AccessibleTooltipButton from "../views/elements/AccessibleTooltipButton";
import ErrorBoundary from "../views/elements/ErrorBoundary";
import Field from "../views/elements/Field";
import RoomFacePile from "../views/elements/RoomFacePile";
import RoomName from "../views/elements/RoomName";
import RoomTopic from "../views/elements/RoomTopic";
import withValidation from "../views/elements/Validation";
import RoomInfoLine from "../views/rooms/RoomInfoLine";
import RoomPreviewCard from "../views/rooms/RoomPreviewCard";
import SpacePublicShare from "../views/spaces/SpacePublicShare";
import { ChevronFace, ContextMenuButton, useContextMenu } from "./ContextMenu";
import MainSplit from "./MainSplit";
import RightPanel from "./RightPanel";
import SpaceHierarchy, { showRoom } from "./SpaceHierarchy";
import { RoomPermalinkCreator } from "../../utils/permalinks/Permalinks";

interface IProps {
    space: Room;
    justCreatedOpts?: IOpts;
    resizeNotifier: ResizeNotifier;
    permalinkCreator: RoomPermalinkCreator;
    onJoinButtonClicked(): void;
    onRejectButtonClicked(): void;
}

interface IState {
    phase: Phase;
    firstRoomId?: string; // internal state for the creation wizard
    showRightPanel: boolean;
    myMembership: string;
}

enum Phase {
    Landing,
    PublicCreateRooms,
    PublicShare,
    PrivateScope,
    PrivateInvite,
    PrivateCreateRooms,
    PrivateExistingRooms,
}

const SpaceLandingAddButton: React.FC<{ space: Room }> = ({ space }) => {
    const [menuDisplayed, handle, openMenu, closeMenu] = useContextMenu();
    const canCreateRoom = shouldShowComponent(UIComponent.CreateRooms);
    const canCreateSpace = shouldShowComponent(UIComponent.CreateSpaces);
    const videoRoomsEnabled = useFeatureEnabled("feature_video_rooms");
    const elementCallVideoRoomsEnabled = useFeatureEnabled("feature_element_call_video_rooms");

    let contextMenu: JSX.Element | null = null;
    if (menuDisplayed) {
        const rect = handle.current!.getBoundingClientRect();
        contextMenu = (
            <IconizedContextMenu
                left={rect.left + window.scrollX + 0}
                top={rect.bottom + window.scrollY + 8}
                chevronFace={ChevronFace.None}
                onFinished={closeMenu}
                className="mx_RoomTile_contextMenu"
                compact
            >
                <IconizedContextMenuOptionList first>
                    {canCreateRoom && (
                        <>
                            <IconizedContextMenuOption
                                label={_t("action|new_room")}
                                iconClassName="mx_RoomList_iconNewRoom"
                                onClick={async (e): Promise<void> => {
                                    e.preventDefault();
                                    e.stopPropagation();
                                    closeMenu();

                                    PosthogTrackers.trackInteraction("WebSpaceHomeCreateRoomButton", e);
                                    if (await showCreateNewRoom(space)) {
                                        defaultDispatcher.fire(Action.UpdateSpaceHierarchy);
                                    }
                                }}
                            />
                            {videoRoomsEnabled && (
                                <IconizedContextMenuOption
                                    label={_t("action|new_video_room")}
                                    iconClassName="mx_RoomList_iconNewVideoRoom"
                                    onClick={async (e): Promise<void> => {
                                        e.preventDefault();
                                        e.stopPropagation();
                                        closeMenu();

                                        if (
                                            await showCreateNewRoom(
                                                space,
                                                elementCallVideoRoomsEnabled
                                                    ? RoomType.UnstableCall
                                                    : RoomType.ElementVideo,
                                            )
                                        ) {
                                            defaultDispatcher.fire(Action.UpdateSpaceHierarchy);
                                        }
                                    }}
                                >
                                    <BetaPill />
                                </IconizedContextMenuOption>
                            )}
                        </>
                    )}
                    <IconizedContextMenuOption
                        label={_t("action|add_existing_room")}
                        iconClassName="mx_RoomList_iconAddExistingRoom"
                        onClick={(e) => {
                            e.preventDefault();
                            e.stopPropagation();
                            closeMenu();
                            showAddExistingRooms(space);
                        }}
                    />
                    {canCreateSpace && (
                        <IconizedContextMenuOption
                            label={_t("room_list|add_space_label")}
                            iconClassName="mx_RoomList_iconPlus"
                            onClick={(e) => {
                                e.preventDefault();
                                e.stopPropagation();
                                closeMenu();
                                showCreateNewSubspace(space);
                            }}
                        >
                            <BetaPill />
                        </IconizedContextMenuOption>
                    )}
                </IconizedContextMenuOptionList>
            </IconizedContextMenu>
        );
    }

    return (
        <>
            <ContextMenuButton
                kind="primary"
                ref={handle}
                onClick={openMenu}
                isExpanded={menuDisplayed}
                label={_t("action|add")}
            >
                {_t("action|add")}
            </ContextMenuButton>
            {contextMenu}
        </>
    );
};

const SpaceLanding: React.FC<{ space: Room }> = ({ space }) => {
    const cli = useContext(MatrixClientContext);
    const myMembership = useMyRoomMembership(space);
    const userId = cli.getSafeUserId();

    const storeIsShowingSpaceMembers = useCallback(
        () =>
            RightPanelStore.instance.isOpenForRoom(space.roomId) &&
            RightPanelStore.instance.currentCardForRoom(space.roomId)?.phase === RightPanelPhases.SpaceMemberList,
        [space.roomId],
    );
    const isShowingMembers = useEventEmitterState(RightPanelStore.instance, UPDATE_EVENT, storeIsShowingSpaceMembers);

    let inviteButton;
    if (shouldShowSpaceInvite(space) && shouldShowComponent(UIComponent.InviteUsers)) {
        inviteButton = (
            <AccessibleButton
                kind="primary"
                className="mx_SpaceRoomView_landing_inviteButton"
                onClick={() => {
                    showSpaceInvite(space);
                }}
            >
                {_t("action|invite")}
            </AccessibleButton>
        );
    }

    const hasAddRoomPermissions =
        myMembership === "join" && space.currentState.maySendStateEvent(EventType.SpaceChild, userId);

    let addRoomButton;
    if (hasAddRoomPermissions) {
        addRoomButton = <SpaceLandingAddButton space={space} />;
    }

    let settingsButton;
    if (shouldShowSpaceSettings(space)) {
        settingsButton = (
            <AccessibleTooltipButton
                className="mx_SpaceRoomView_landing_settingsButton"
                onClick={() => {
                    showSpaceSettings(space);
                }}
                title={_t("common|settings")}
            />
        );
    }

    const onMembersClick = (): void => {
        RightPanelStore.instance.setCard({ phase: RightPanelPhases.SpaceMemberList });
    };

    return (
        <div className="mx_SpaceRoomView_landing">
            <div className="mx_SpaceRoomView_landing_header">
                <RoomAvatar room={space} size="80px" viewAvatarOnClick={true} type="square" />
            </div>
            <div className="mx_SpaceRoomView_landing_name">
                <RoomName room={space}>
                    {(name) => {
                        const tags = { name: () => <h1>{name}</h1> };
                        return _t("space|landing_welcome", {}, tags) as JSX.Element;
                    }}
                </RoomName>
            </div>
            <div className="mx_SpaceRoomView_landing_infoBar">
                <RoomInfoLine room={space} />
                <div className="mx_SpaceRoomView_landing_infoBar_interactive">
                    <RoomFacePile
                        room={space}
                        onlyKnownUsers={false}
                        numShown={7}
                        onClick={isShowingMembers ? undefined : onMembersClick}
                    />
                    {inviteButton}
                    {settingsButton}
                </div>
            </div>
            <RoomTopic room={space} className="mx_SpaceRoomView_landing_topic" />

            <SpaceHierarchy space={space} showRoom={showRoom} additionalButtons={addRoomButton} />
        </div>
    );
};

const SpaceSetupFirstRooms: React.FC<{
    space: Room;
    title: string;
    description: JSX.Element;
    onFinished(firstRoomId?: string): void;
}> = ({ space, title, description, onFinished }) => {
    const [busy, setBusy] = useState(false);
    const [error, setError] = useState("");
    const numFields = 3;
    const placeholders = [_t("common|general"), _t("common|random"), _t("common|support")];
    const [roomNames, setRoomName] = useStateArray(numFields, [_t("common|general"), _t("common|random"), ""]);
    const fields = new Array(numFields).fill(0).map((x, i) => {
        const name = "roomName" + i;
        return (
            <Field
                key={name}
                name={name}
                type="text"
                label={_t("common|room_name")}
                placeholder={placeholders[i]}
                value={roomNames[i]}
                onChange={(ev: React.ChangeEvent<HTMLInputElement>) => setRoomName(i, ev.target.value)}
                autoFocus={i === 2}
                disabled={busy}
                autoComplete="off"
            />
        );
    });

    const onNextClick = async (ev: ButtonEvent): Promise<void> => {
        ev.preventDefault();
        if (busy) return;
        setError("");
        setBusy(true);
        try {
            const isPublic = space.getJoinRule() === JoinRule.Public;
            const filteredRoomNames = roomNames.map((name) => name.trim()).filter(Boolean);
            const roomIds = await Promise.all(
                filteredRoomNames.map((name) => {
                    return createRoom(space.client, {
                        createOpts: {
                            preset: isPublic ? Preset.PublicChat : Preset.PrivateChat,
                            name,
                        },
                        spinner: false,
                        encryption: false,
                        andView: false,
                        inlineErrors: true,
                        parentSpace: space,
                        joinRule: !isPublic ? JoinRule.Restricted : undefined,
                        suggested: true,
                    });
                }),
            );
            onFinished(roomIds[0] ?? undefined);
        } catch (e) {
            logger.error("Failed to create initial space rooms", e);
            setError(_t("create_space|failed_create_initial_rooms"));
        }
        setBusy(false);
    };

    let onClick = (ev: ButtonEvent): void => {
        ev.preventDefault();
        onFinished();
    };
    let buttonLabel = _t("create_space|skip_action");
    if (roomNames.some((name) => name.trim())) {
        onClick = onNextClick;
        buttonLabel = busy ? _t("create_space|creating_rooms") : _t("action|continue");
    }

    return (
        <div>
            <h1>{title}</h1>
            <div className="mx_SpaceRoomView_description">{description}</div>

            {error && <div className="mx_SpaceRoomView_errorText">{error}</div>}
            <form onSubmit={onClick} id="mx_SpaceSetupFirstRooms">
                {fields}
            </form>

            <div className="mx_SpaceRoomView_buttons">
                <AccessibleButton
                    kind="primary"
                    disabled={busy}
                    onClick={onClick}
                    element="input"
                    type="submit"
                    form="mx_SpaceSetupFirstRooms"
                    value={buttonLabel}
                />
            </div>
        </div>
    );
};

const SpaceAddExistingRooms: React.FC<{
    space: Room;
    onFinished(): void;
}> = ({ space, onFinished }) => {
    return (
        <div>
            <h1>{_t("create_space|add_existing_rooms_heading")}</h1>
            <div className="mx_SpaceRoomView_description">{_t("create_space|add_existing_rooms_description")}</div>

            <AddExistingToSpace
                space={space}
                emptySelectionButton={
                    <AccessibleButton kind="primary" onClick={onFinished}>
                        {_t("create_space|skip_action")}
                    </AccessibleButton>
                }
                filterPlaceholder={_t("space|room_filter_placeholder")}
                onFinished={onFinished}
                roomsRenderer={defaultRoomsRenderer}
                dmsRenderer={defaultDmsRenderer}
            />
        </div>
    );
};

interface ISpaceSetupPublicShareProps extends Pick<IProps & IState, "justCreatedOpts" | "space" | "firstRoomId"> {
    onFinished(): void;
}

const SpaceSetupPublicShare: React.FC<ISpaceSetupPublicShareProps> = ({
    justCreatedOpts,
    space,
    onFinished,
    firstRoomId,
}) => {
    return (
        <div className="mx_SpaceRoomView_publicShare">
            <h1>
                {_t("create_space|share_heading", {
                    name: justCreatedOpts?.createOpts?.name || space.name,
                })}
            </h1>
            <div className="mx_SpaceRoomView_description">{_t("create_space|share_description")}</div>

            <SpacePublicShare space={space} />

            <div className="mx_SpaceRoomView_buttons">
                <AccessibleButton kind="primary" onClick={onFinished}>
                    {firstRoomId ? _t("create_space|done_action_first_room") : _t("create_space|done_action")}
                </AccessibleButton>
            </div>
        </div>
    );
};

const SpaceSetupPrivateScope: React.FC<{
    space: Room;
    justCreatedOpts?: IOpts;
    onFinished(createRooms: boolean): void;
}> = ({ space, justCreatedOpts, onFinished }) => {
    return (
        <div className="mx_SpaceRoomView_privateScope">
            <h1>{_t("create_space|private_personal_heading")}</h1>
            <div className="mx_SpaceRoomView_description">
                {_t("create_space|private_personal_description", {
                    name: justCreatedOpts?.createOpts?.name || space.name,
                })}
            </div>

            <AccessibleButton
                className="mx_SpaceRoomView_privateScope_justMeButton"
                onClick={() => {
                    onFinished(false);
                }}
            >
                {_t("create_space|personal_space")}
                <div>{_t("create_space|personal_space_description")}</div>
            </AccessibleButton>
            <AccessibleButton
                className="mx_SpaceRoomView_privateScope_meAndMyTeammatesButton"
                onClick={() => {
                    onFinished(true);
                }}
            >
                {_t("create_space|private_space")}
                <div>{_t("create_space|private_space_description")}</div>
            </AccessibleButton>
        </div>
    );
};

const validateEmailRules = withValidation({
    rules: [
        {
            key: "email",
            test: ({ value }) => !value || Email.looksValid(value),
            invalid: () => _t("auth|email_field_label_invalid"),
        },
    ],
});

const SpaceSetupPrivateInvite: React.FC<{
    space: Room;
    onFinished(): void;
}> = ({ space, onFinished }) => {
    const [busy, setBusy] = useState(false);
    const [error, setError] = useState("");
    const numFields = 3;
    const fieldRefs = [useRef<Field>(null), useRef<Field>(null), useRef<Field>(null)];
    const [emailAddresses, setEmailAddress] = useStateArray(numFields, "");
    const fields = new Array(numFields).fill(0).map((x, i) => {
        const name = "emailAddress" + i;
        return (
            <Field
                key={name}
                name={name}
                type="text"
                label={_t("common|email_address")}
                placeholder={_t("auth|email_field_label")}
                value={emailAddresses[i]}
                onChange={(ev: React.ChangeEvent<HTMLInputElement>) => setEmailAddress(i, ev.target.value)}
                ref={fieldRefs[i]}
                onValidate={validateEmailRules}
                autoFocus={i === 0}
                disabled={busy}
            />
        );
    });

    const onNextClick = async (ev: ButtonEvent): Promise<void> => {
        ev.preventDefault();
        if (busy) return;
        setError("");
        for (const fieldRef of fieldRefs) {
            const valid = await fieldRef.current?.validate({ allowEmpty: true });

            if (valid === false) {
                // true/null are allowed
                fieldRef.current!.focus();
                fieldRef.current!.validate({ allowEmpty: true, focused: true });
                return;
            }
        }

        setBusy(true);
        const targetIds = emailAddresses.map((name) => name.trim()).filter(Boolean);
        try {
            const result = await inviteMultipleToRoom(space.client, space.roomId, targetIds);

            const failedUsers = Object.keys(result.states).filter((a) => result.states[a] === "error");
            if (failedUsers.length > 0) {
                logger.log("Failed to invite users to space: ", result);
                setError(
                    _t("create_space|failed_invite_users", {
                        csvUsers: failedUsers.join(", "),
                    }),
                );
            } else {
                onFinished();
            }
        } catch (err) {
            logger.error("Failed to invite users to space: ", err);
            setError(_t("invite|error_invite"));
        }
        setBusy(false);
    };

    let onClick = (ev: ButtonEvent): void => {
        ev.preventDefault();
        onFinished();
    };
    let buttonLabel = _t("create_space|skip_action");
    if (emailAddresses.some((name) => name.trim())) {
        onClick = onNextClick;
        buttonLabel = busy ? _t("create_space|inviting_users") : _t("action|continue");
    }

    return (
        <div className="mx_SpaceRoomView_inviteTeammates">
            <h1>{_t("create_space|invite_teammates_heading")}</h1>
            <div className="mx_SpaceRoomView_description">{_t("create_space|invite_teammates_description")}</div>

            {error && <div className="mx_SpaceRoomView_errorText">{error}</div>}
            <form onSubmit={onClick} id="mx_SpaceSetupPrivateInvite">
                {fields}
            </form>

            <div className="mx_SpaceRoomView_inviteTeammates_buttons">
                <AccessibleButton
                    className="mx_SpaceRoomView_inviteTeammates_inviteDialogButton"
                    onClick={() => showRoomInviteDialog(space.roomId)}
                >
                    {_t("create_space|invite_teammates_by_username")}
                </AccessibleButton>
            </div>

            <div className="mx_SpaceRoomView_buttons">
                <AccessibleButton
                    kind="primary"
                    disabled={busy}
                    onClick={onClick}
                    element="input"
                    type="submit"
                    form="mx_SpaceSetupPrivateInvite"
                    value={buttonLabel}
                />
            </div>
        </div>
    );
};

export default class SpaceRoomView extends React.PureComponent<IProps, IState> {
    public static contextType = MatrixClientContext;
    public context!: React.ContextType<typeof MatrixClientContext>;

    private readonly dispatcherRef: string;

    public constructor(props: IProps, context: React.ContextType<typeof MatrixClientContext>) {
        super(props, context);

        let phase = Phase.Landing;

        const creator = this.props.space.currentState.getStateEvents(EventType.RoomCreate, "")?.getSender();
        const showSetup = this.props.justCreatedOpts && context.getSafeUserId() === creator;

        if (showSetup) {
            phase =
                this.props.justCreatedOpts!.createOpts?.preset === Preset.PublicChat
                    ? Phase.PublicCreateRooms
                    : Phase.PrivateScope;
        }

        this.state = {
            phase,
            showRightPanel: RightPanelStore.instance.isOpenForRoom(this.props.space.roomId),
            myMembership: this.props.space.getMyMembership(),
        };

        this.dispatcherRef = defaultDispatcher.register(this.onAction);
        RightPanelStore.instance.on(UPDATE_EVENT, this.onRightPanelStoreUpdate);
    }

    public componentDidMount(): void {
        this.context.on(RoomEvent.MyMembership, this.onMyMembership);
    }

    public componentWillUnmount(): void {
        defaultDispatcher.unregister(this.dispatcherRef);
        RightPanelStore.instance.off(UPDATE_EVENT, this.onRightPanelStoreUpdate);
        this.context.off(RoomEvent.MyMembership, this.onMyMembership);
    }

    private onMyMembership = (room: Room, myMembership: string): void => {
        if (room.roomId === this.props.space.roomId) {
            this.setState({ myMembership });
        }
    };

    private onRightPanelStoreUpdate = (): void => {
        this.setState({
            showRightPanel: RightPanelStore.instance.isOpenForRoom(this.props.space.roomId),
        });
    };

    private onAction = (payload: ActionPayload): void => {
        if (payload.action === Action.ViewRoom && payload.room_id === this.props.space.roomId) {
            this.setState({ phase: Phase.Landing });
            return;
        }
    };

    private goToFirstRoom = async (): Promise<void> => {
        if (this.state.firstRoomId) {
            defaultDispatcher.dispatch<ViewRoomPayload>({
                action: Action.ViewRoom,
                room_id: this.state.firstRoomId,
                metricsTrigger: undefined, // other
            });
            return;
        }

        this.setState({ phase: Phase.Landing });
    };

    private renderBody(): JSX.Element {
        switch (this.state.phase) {
            case Phase.Landing:
                if (this.state.myMembership === "join") {
                    return <SpaceLanding space={this.props.space} />;
                } else {
                    return (
                        <RoomPreviewCard
                            room={this.props.space}
                            onJoinButtonClicked={this.props.onJoinButtonClicked}
                            onRejectButtonClicked={this.props.onRejectButtonClicked}
                        />
                    );
                }
            case Phase.PublicCreateRooms:
                return (
                    <SpaceSetupFirstRooms
                        space={this.props.space}
                        title={_t("create_space|setup_rooms_community_heading", {
                            spaceName: this.props.justCreatedOpts?.createOpts?.name || this.props.space.name,
                        })}
                        description={
                            <>
                                {_t("create_space|setup_rooms_community_description")}
                                <br />
                                {_t("create_space|setup_rooms_description")}
                            </>
                        }
                        onFinished={(firstRoomId: string) => this.setState({ phase: Phase.PublicShare, firstRoomId })}
                    />
                );
            case Phase.PublicShare:
                return (
                    <SpaceSetupPublicShare
                        justCreatedOpts={this.props.justCreatedOpts}
                        space={this.props.space}
                        onFinished={this.goToFirstRoom}
                        firstRoomId={this.state.firstRoomId}
                    />
                );

            case Phase.PrivateScope:
                return (
                    <SpaceSetupPrivateScope
                        space={this.props.space}
                        justCreatedOpts={this.props.justCreatedOpts}
                        onFinished={(invite: boolean) => {
                            this.setState({ phase: invite ? Phase.PrivateCreateRooms : Phase.PrivateExistingRooms });
                        }}
                    />
                );
            case Phase.PrivateInvite:
                return (
                    <SpaceSetupPrivateInvite
                        space={this.props.space}
                        onFinished={() => this.setState({ phase: Phase.Landing })}
                    />
                );
            case Phase.PrivateCreateRooms:
                return (
                    <SpaceSetupFirstRooms
                        space={this.props.space}
                        title={_t("create_space|setup_rooms_private_heading")}
                        description={
                            <>
                                {_t("create_space|setup_rooms_private_description")}
                                <br />
                                {_t("create_space|setup_rooms_description")}
                            </>
                        }
                        onFinished={(firstRoomId: string) => this.setState({ phase: Phase.PrivateInvite, firstRoomId })}
                    />
                );
            case Phase.PrivateExistingRooms:
                return (
                    <SpaceAddExistingRooms
                        space={this.props.space}
                        onFinished={() => this.setState({ phase: Phase.Landing })}
                    />
                );
        }
    }

    public render(): React.ReactNode {
        const rightPanel =
            this.state.showRightPanel && this.state.phase === Phase.Landing ? (
                <RightPanel
                    room={this.props.space}
                    resizeNotifier={this.props.resizeNotifier}
                    permalinkCreator={this.props.permalinkCreator}
                />
            ) : undefined;

        return (
            <main className="mx_SpaceRoomView">
                <ErrorBoundary>
                    <MainSplit panel={rightPanel} resizeNotifier={this.props.resizeNotifier}>
                        {this.renderBody()}
                    </MainSplit>
                </ErrorBoundary>
            </main>
        );
    }
}