74 lines
1.8 KiB
JavaScript
74 lines
1.8 KiB
JavaScript
import localForage from 'localforage';
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//import _ from 'lodash';
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import * as utils from '../../share/utils';
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const maxDataSize = 100*1024*1024;
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const abStore = localForage.createInstance({
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name: 'authorBooksStorage'
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});
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class AuthorBooksStorage {
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constructor() {
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}
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async init() {
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this.cleanStorage(); //no await
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}
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async setData(key, data) {
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if (typeof data !== 'string')
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throw new Error('AuthorBooksStorage: data must be a string');
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await abStore.setItem(key, data);
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await abStore.setItem(`addTime-${key}`, Date.now());
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}
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async getData(key) {
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const item = await abStore.getItem(key);
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//обновим addTime
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if (item !== undefined)
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abStore.setItem(`addTime-${key}`, Date.now());//no await
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return item;
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}
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async removeData(key) {
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await abStore.removeItem(key);
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await abStore.removeItem(`addTime-${key}`);
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}
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async cleanStorage() {
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await utils.sleep(5000);
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while (1) {// eslint-disable-line no-constant-condition
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let size = 0;
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let min = Date.now();
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let toDel = null;
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for (const key of (await abStore.keys())) {
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if (key.indexOf('addTime-') == 0)
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continue;
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const item = await abStore.getItem(key);
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const addTime = await abStore.getItem(`addTime-${key}`);
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size += item.length;
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if (addTime < min) {
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toDel = key;
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min = addTime;
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}
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}
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if (size > maxDataSize && toDel) {
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await this.removeData(toDel);
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} else {
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break;
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}
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}
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}
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}
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export default new AuthorBooksStorage(); |