Switch Space Settings for a tabbed view with a bunch more settings exposed

src/components/views/spaces/SpaceSettingsVisibilityTab.tsx

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+/*
+Copyright 2021 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 React, { useState } from "react";
+import { Room } from "matrix-js-sdk/src/models/room";
+import { MatrixClient } from "matrix-js-sdk/src/client";
+import { EventType } from "matrix-js-sdk/src/@types/event";
+
+import { _t } from "../../../languageHandler";
+import AccessibleButton from "../elements/AccessibleButton";
+import AliasSettings from "../room_settings/AliasSettings";
+import { useStateToggle } from "../../../hooks/useStateToggle";
+import LabelledToggleSwitch from "../elements/LabelledToggleSwitch";
+import { GuestAccess, HistoryVisibility, JoinRule } from "../settings/tabs/room/SecurityRoomSettingsTab";
+import StyledRadioGroup from "../elements/StyledRadioGroup";
+
+interface IProps {
+    matrixClient: MatrixClient;
+    space: Room;
+}
+
+enum SpaceVisibility {
+    Unlisted = "unlisted",
+    Private = "private",
+}
+
+const useLocalEcho = <T extends any>(
+    currentFactory: () => T,
+    setterFn: (value: T) => Promise<void>,
+    errorFn: (error: Error) => void,
+): [value: T, handler: (value: T) => void] => {
+    const [value, setValue] = useState(currentFactory);
+    const handler = async (value: T) => {
+        setValue(value);
+        try {
+            await setterFn(value);
+        } catch (e) {
+            setValue(currentFactory());
+            errorFn(e);
+        }
+    };
+
+    return [value, handler];
+};
+
+const SpaceSettingsVisibilityTab = ({ matrixClient: cli, space }: IProps) => {
+    const [busy, setBusy] = useState(false);
+    const [error, setError] = useState("");
+
+    const userId = cli.getUserId();
+
+    const [visibility, setVisibility] = useLocalEcho<SpaceVisibility>(
+        () => space.getJoinRule() === JoinRule.Private ? SpaceVisibility.Private : SpaceVisibility.Unlisted,
+        visibility => cli.sendStateEvent(space.roomId, EventType.RoomJoinRules, {
+            join_rule: visibility === SpaceVisibility.Unlisted ? JoinRule.Public : JoinRule.Private,
+        }, ""),
+        () => setError(_t("Failed to update the visibility of this space")),
+    );
+    const [guestAccessEnabled, setGuestAccessEnabled] = useLocalEcho<boolean>(
+        () => space.currentState.getStateEvents(EventType.RoomGuestAccess, "")
+            ?.getContent()?.guest_access === GuestAccess.CanJoin,
+        guestAccessEnabled => cli.sendStateEvent(space.roomId, EventType.RoomGuestAccess, {
+            guest_access: guestAccessEnabled ? GuestAccess.CanJoin : GuestAccess.Forbidden,
+        }, ""),
+        () => setError(_t("Failed to update the guest access of this space")),
+    );
+    const [historyVisibility, setHistoryVisibility] = useLocalEcho<HistoryVisibility>(
+        () => space.currentState.getStateEvents(EventType.RoomHistoryVisibility, "")
+            ?.getContent()?.history_visibility || HistoryVisibility.Shared,
+        historyVisibility => cli.sendStateEvent(space.roomId, EventType.RoomHistoryVisibility, {
+            history_visibility: historyVisibility,
+        }, ""),
+        () => setError(_t("Failed to update the history visibility of this space")),
+    );
+
+    const [showAdvancedSection, toggleAdvancedSection] = useStateToggle();
+
+    const canSetJoinRule = space.currentState.maySendStateEvent(EventType.RoomJoinRules, userId);
+    const canSetGuestAccess = space.currentState.maySendStateEvent(EventType.RoomGuestAccess, userId);
+    const canSetHistoryVisibility = space.currentState.maySendStateEvent(EventType.RoomHistoryVisibility, userId);
+    const canSetCanonical = space.currentState.mayClientSendStateEvent(EventType.RoomCanonicalAlias, cli);
+    const canonicalAliasEv = space.currentState.getStateEvents(EventType.RoomCanonicalAlias, "");
+
+    let advancedSection;
+    if (showAdvancedSection) {
+        advancedSection = <>
+            <AccessibleButton onClick={toggleAdvancedSection} kind="link" className="mx_SettingsTab_showAdvanced">
+                { _t("Hide advanced") }
+            </AccessibleButton>
+
+            <LabelledToggleSwitch
+                value={guestAccessEnabled}
+                onChange={setGuestAccessEnabled}
+                disabled={!canSetGuestAccess}
+                label={_t("Enable guest access")}
+            />
+            <p>
+                { _t("Guests can join a space without having an account.") }
+                <br />
+                { _t("This may be useful for public spaces.") }
+            </p>
+        </>;
+    } else {
+        advancedSection = <>
+            <AccessibleButton onClick={toggleAdvancedSection} kind="link" className="mx_SettingsTab_showAdvanced">
+                { _t("Show advanced") }
+            </AccessibleButton>
+        </>;
+    }
+
+    return <div className="mx_SettingsTab">
+        <div className="mx_SettingsTab_heading">{_t("Visibility")}</div>
+
+        { error && <div className="mx_SpaceRoomView_errorText">{ error }</div> }
+
+        <div className="mx_SettingsTab_section">
+            <div className="mx_SettingsTab_section_caption">
+                { _t("Decide who can view and join %(spaceName)s.", { spaceName: space.name }) }
+            </div>
+
+            <div>
+                <StyledRadioGroup
+                    name="spaceVisibility"
+                    value={visibility}
+                    onChange={setVisibility}
+                    disabled={!canSetJoinRule}
+                    definitions={[
+                        {
+                            value: SpaceVisibility.Unlisted,
+                            label: _t("Public"),
+                            description: _t("anyone with the link can view and join"),
+                        }, {
+                            value: SpaceVisibility.Private,
+                            label: _t("Invite only"),
+                            description: _t("only invited people can view and join"),
+                        },
+                    ]}
+                />
+            </div>
+
+            { advancedSection }
+
+            <LabelledToggleSwitch
+                value={historyVisibility === HistoryVisibility.WorldReadable}
+                onChange={(checked: boolean) => {
+                    setHistoryVisibility(checked ? HistoryVisibility.WorldReadable : HistoryVisibility.Shared);
+                }}
+                disabled={!canSetHistoryVisibility}
+                label={_t("Preview Space")}
+            />
+            <div>{ _t("Allow people to preview your space before they join.") }</div>
+            <b>{ _t("Recommended for public spaces.") }</b>
+        </div>
+
+        <span className="mx_SettingsTab_subheading">{_t("Address")}</span>
+        <div className="mx_SettingsTab_section mx_SettingsTab_subsectionText">
+            <AliasSettings
+                roomId={space.roomId}
+                canSetCanonicalAlias={canSetCanonical}
+                canSetAliases={true}
+                canonicalAliasEvent={canonicalAliasEv}
+                hidePublishSetting={true}
+            />
+        </div>
+    </div>;
+};
+
+export default SpaceSettingsVisibilityTab;