44 lines
1.6 KiB
TypeScript
44 lines
1.6 KiB
TypeScript
 
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import { useEffect } from 'react';
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import { useAtomValue } from 'jotai';
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import { MatrixEvent, Room, RoomEvent } from 'matrix-js-sdk';
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import { useMatrixClient } from '../hooks/useMatrixClient';
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import { searchCacheEnabledAtom } from '../state/searchCacheEnabled';
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import { clearRoom, deleteRow } from './searchCache';
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/**
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* Gitea #14 — the persistent search cache (`searchCache.ts`) had no
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* invalidation path other than logout or the manual "Clear cached index"
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* button, so redacted messages and rooms the user left kept their decrypted
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* plaintext searchable on disk indefinitely.
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*
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* While the cache is enabled, listen client-wide for redactions (delete the
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* redacted row) and for leaving/being banned from a room (wipe the room's
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* cached rows via the existing `clearRoom`).
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*/
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export const useSearchCacheInvalidation = (): void => {
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const mx = useMatrixClient();
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const cacheEnabled = useAtomValue(searchCacheEnabledAtom);
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useEffect(() => {
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if (!cacheEnabled) return undefined;
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const onRedaction = (event: MatrixEvent, room: Room) => {
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const redactedEventId = event.getAssociatedId();
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if (redactedEventId) deleteRow(room.roomId, redactedEventId);
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};
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const onMyMembership = (room: Room, membership: string) => {
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if (membership === 'leave' || membership === 'ban') {
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clearRoom(room.roomId);
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}
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};
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mx.on(RoomEvent.Redaction, onRedaction);
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mx.on(RoomEvent.MyMembership, onMyMembership);
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return () => {
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mx.off(RoomEvent.Redaction, onRedaction);
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mx.off(RoomEvent.MyMembership, onMyMembership);
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};
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}, [mx, cacheEnabled]);
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};
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