element-web/src/DraftCleaner.ts
David Langley 491f0cd08a
Change license (#13)
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2024-09-09 13:57:16 +00:00

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TypeScript

/*
Copyright 2024 New Vector Ltd.
Copyright 2024 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 { logger } from "matrix-js-sdk/src/logger";
import { MatrixClientPeg } from "./MatrixClientPeg";
import { EDITOR_STATE_STORAGE_PREFIX } from "./components/views/rooms/SendMessageComposer";
import { WYSIWYG_EDITOR_STATE_STORAGE_PREFIX } from "./components/views/rooms/MessageComposer";
// The key used to persist the the timestamp we last cleaned up drafts
export const DRAFT_LAST_CLEANUP_KEY = "mx_draft_cleanup";
// The period of time we wait between cleaning drafts
export const DRAFT_CLEANUP_PERIOD = 1000 * 60 * 60 * 24 * 30;
/**
* Checks if `DRAFT_CLEANUP_PERIOD` has expired, if so, deletes any stord editor drafts that exist for rooms that are not in the known list.
*/
export function cleanUpDraftsIfRequired(): void {
if (!shouldCleanupDrafts()) {
return;
}
logger.debug(`Cleaning up editor drafts...`);
cleaupDrafts();
try {
localStorage.setItem(DRAFT_LAST_CLEANUP_KEY, String(Date.now()));
} catch (error) {
logger.error("Failed to persist draft cleanup key", error);
}
}
/**
*
* @returns {bool} True if the timestamp has not been persisted or the `DRAFT_CLEANUP_PERIOD` has expired.
*/
function shouldCleanupDrafts(): boolean {
try {
const lastCleanupTimestamp = localStorage.getItem(DRAFT_LAST_CLEANUP_KEY);
if (!lastCleanupTimestamp) {
return true;
}
const parsedTimestamp = Number.parseInt(lastCleanupTimestamp || "", 10);
if (!Number.isInteger(parsedTimestamp)) {
return true;
}
return Date.now() > parsedTimestamp + DRAFT_CLEANUP_PERIOD;
} catch (error) {
return true;
}
}
/**
* Clear all drafts for the CIDER and WYSIWYG editors if the room does not exist in the known rooms.
*/
function cleaupDrafts(): void {
for (let i = 0; i < localStorage.length; i++) {
const keyName = localStorage.key(i);
if (!keyName) continue;
let roomId: string | undefined = undefined;
if (keyName.startsWith(EDITOR_STATE_STORAGE_PREFIX)) {
roomId = keyName.slice(EDITOR_STATE_STORAGE_PREFIX.length).split("_$")[0];
}
if (keyName.startsWith(WYSIWYG_EDITOR_STATE_STORAGE_PREFIX)) {
roomId = keyName.slice(WYSIWYG_EDITOR_STATE_STORAGE_PREFIX.length).split("_$")[0];
}
if (!roomId) continue;
// Remove the prefix and the optional event id suffix to leave the room id
const room = MatrixClientPeg.safeGet().getRoom(roomId);
if (!room) {
logger.debug(`Removing draft for unknown room with key ${keyName}`);
localStorage.removeItem(keyName);
}
}
}