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import { useCallback } from 'react';
import { sprintf } from 'sprintf-js';
import styled from 'styled-components';
import { strings } from '../../config.json';
import { messages } from '../../shared/gettext';
import log from '../../shared/logging';
import { useRelaySettingsUpdater } from '../lib/constraint-updater';
import { useHistory } from '../lib/history';
import { useSelector } from '../redux/store';
import { AriaDescription, AriaInput, AriaInputGroup, AriaLabel } from './AriaGroup';
import * as Cell from './cell';
import { StyledIllustration } from './DaitaSettings';
import { BackAction } from './KeyboardNavigation';
import { Layout, SettingsContainer } from './Layout';
import {
NavigationBar,
NavigationContainer,
NavigationItems,
NavigationScrollbars,
TitleBarItem,
} from './NavigationBar';
import SettingsHeader, { HeaderSubTitle, HeaderTitle } from './SettingsHeader';
const StyledContent = styled.div({
display: 'flex',
flexDirection: 'column',
flex: 1,
marginBottom: '2px',
});
export default function MultihopSettings() {
const { pop } = useHistory();
return (
<BackAction action={pop}>
<Layout>
<SettingsContainer>
<NavigationContainer>
<NavigationBar>
<NavigationItems>
<TitleBarItem>
{messages.pgettext('wireguard-settings-view', 'Multihop')}
</TitleBarItem>
</NavigationItems>
</NavigationBar>
<NavigationScrollbars>
<SettingsHeader>
<HeaderTitle>
{messages.pgettext('wireguard-settings-view', 'Multihop')}
</HeaderTitle>
<HeaderSubTitle>
<StyledIllustration src="../../assets/images/multihop-illustration.svg" />
{messages.pgettext(
'wireguard-settings-view',
'Multihop routes your traffic into one WireGuard server and out another, making it harder to trace. This results in increased latency but increases anonymity online.',
)}
</HeaderSubTitle>
</SettingsHeader>
<StyledContent>
<Cell.Group>
<MultihopSetting />
</Cell.Group>
</StyledContent>
</NavigationScrollbars>
</NavigationContainer>
</SettingsContainer>
</Layout>
</BackAction>
);
}
function MultihopSetting() {
const relaySettings = useSelector((state) => state.settings.relaySettings);
const relaySettingsUpdater = useRelaySettingsUpdater();
const multihop = 'normal' in relaySettings ? relaySettings.normal.wireguard.useMultihop : false;
const unavailable =
'normal' in relaySettings ? relaySettings.normal.tunnelProtocol === 'openvpn' : true;
const setMultihop = useCallback(
async (enabled: boolean) => {
try {
await relaySettingsUpdater((settings) => {
settings.wireguardConstraints.useMultihop = enabled;
return settings;
});
} catch (e) {
const error = e as Error;
log.error('Failed to update WireGuard multihop settings', error.message);
}
},
[relaySettingsUpdater],
);
return (
<>
<AriaInputGroup>
<Cell.Container disabled={unavailable}>
<AriaLabel>
<Cell.InputLabel>{messages.gettext('Enable')}</Cell.InputLabel>
</AriaLabel>
<AriaInput>
<Cell.Switch isOn={multihop && !unavailable} onChange={setMultihop} />
</AriaInput>
</Cell.Container>
{unavailable ? (
<Cell.CellFooter>
<AriaDescription>
<Cell.CellFooterText>{featureUnavailableMessage()}</Cell.CellFooterText>
</AriaDescription>
</Cell.CellFooter>
) : null}
</AriaInputGroup>
</>
);
}
function featureUnavailableMessage() {
const automatic = messages.gettext('Automatic');
const tunnelProtocol = messages.pgettext('vpn-settings-view', 'Tunnel protocol');
const multihop = messages.pgettext('wireguard-settings-view', 'Multihop');
return sprintf(
messages.pgettext(
'wireguard-settings-view',
'Switch to “%(wireguard)s” or “%(automatic)s” in Settings > %(tunnelProtocol)s to make %(setting)s available.',
),
{ wireguard: strings.wireguard, automatic, tunnelProtocol, setting: multihop },
);
}
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