64 lines
1.7 KiB
TypeScript
64 lines
1.7 KiB
TypeScript
// Copyright 2018 Signal Messenger, LLC
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// SPDX-License-Identifier: AGPL-3.0-only
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import { createLogger } from './logging/log';
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const log = createLogger('indexeddb');
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const LEGACY_DATABASE_ID = 'signal';
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export async function doesDatabaseExist(): Promise<boolean> {
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log.info('Checking for the existence of IndexedDB data...');
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return new Promise((resolve, reject) => {
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const req = window.indexedDB.open(LEGACY_DATABASE_ID);
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let existed = true;
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let timer: undefined | ReturnType<typeof setTimeout> = setTimeout(() => {
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log.warn(
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'doesDatabaseExist: Timed out attempting to check IndexedDB status'
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);
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return resolve(false);
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}, 1000);
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const clearTimer = () => {
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if (timer !== undefined) {
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clearTimeout(timer);
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timer = undefined;
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}
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};
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req.onerror = error => {
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clearTimer();
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reject(error);
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};
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req.onsuccess = () => {
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clearTimer();
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req.result.close();
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resolve(existed);
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};
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req.onupgradeneeded = () => {
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if (req.result.version === 1) {
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existed = false;
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window.indexedDB.deleteDatabase(LEGACY_DATABASE_ID);
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}
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};
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});
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}
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export function removeDatabase(): Promise<void> {
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return new Promise<void>((resolve, reject) => {
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log.info(
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`removeDatabase: Deleting IndexedDB database '${LEGACY_DATABASE_ID}'`
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);
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const request = window.indexedDB.deleteDatabase(LEGACY_DATABASE_ID);
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request.onerror = () => {
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log.error('removeDatabase: Error deleting database.');
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reject(new Error('Error deleting database'));
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};
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request.onsuccess = () => {
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log.info('removeDatabase: Database deleted successfully');
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resolve();
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};
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});
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}
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