86 lines
2.8 KiB
TypeScript
86 lines
2.8 KiB
TypeScript
import { IN_MINI_APP, APP_NAMESPACE } from './env';
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/**
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* storage 中写入一条数据。若key已存在，则会覆盖已有数据。
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* @param {String} key - 缓存的key
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* @param {*} value - 任何可JSON序列化的数据
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* @param {Boolean} withPrefix 是否需要拼接 prefix 和 key，默认为 true，即需要拼接。
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*/
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export function setStorageItem(key: string, value: any, withPrefix = true) {
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const realKey = withPrefix ? _getKey(key) : key;
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_setStorageSync(realKey, value);
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}
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/**
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* 获取storage中的一条数据
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* @param {String} key - 缓存的key
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* @param {Boolean} withPrefix 是否需要拼接 prefix 和 key，默认为 true，即需要拼接。
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* @returns {any} 返回指定key的数据
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*/
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export function getStorageItem(key: string, withPrefix = true): any {
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try {
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const realKey: string = withPrefix ? _getKey(key) : key;
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return _getStorageSync(realKey);
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} catch (error) {
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console.warn('Storage.getStorageItem error:', error);
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return undefined;
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}
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}
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/**
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* 删除指定key的数据
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* @param {String} key - 缓存的key
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* @param {Boolean} withPrefix 是否需要拼接 prefix 和 key，默认为 true，即需要拼接。
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*/
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export function removeStorageItem(key: string, withPrefix = true) {
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try {
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const realKey = withPrefix ? _getKey(key) : key;
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_removeStorageSync(realKey);
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} catch (error) {
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console.warn('Storage.removeStorageItem error:', error);
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}
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}
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function _setStorageSync(key: string, data: string) {
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if (IN_MINI_APP) {
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APP_NAMESPACE.setStorageSync(key, data);
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} else if (_canIUseCookies()) {
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localStorage.setItem(key, JSON.stringify(data));
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}
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}
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function _getStorageSync(key: string): any {
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if (IN_MINI_APP) {
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return APP_NAMESPACE.getStorageSync(key);
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}
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if (_canIUseCookies()) {
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const data: any = localStorage.getItem(key);
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if (data !== 'undefined') {
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return JSON.parse(data);
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}
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}
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return undefined;
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}
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function _removeStorageSync(key: string) {
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if (IN_MINI_APP) {
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APP_NAMESPACE.removeStorageSync(key);
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} else if (_canIUseCookies()) {
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localStorage.removeItem(key);
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}
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}
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function _getKey(key: string) {
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return `chat_engine_${key}`;
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}
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// 如果用户选择 block cookies，此时访问 localStorage 浏览器会抛错
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// Uncaught SecurityError: Failed to read the 'localStorage' property from 'Window': Access is denied for this document
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// 通过 navigator.cookieEnabled 短路逻辑规避
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function _canIUseCookies() {
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// When the browser is configured to block third-party cookies, and navigator.cookieEnabled is invoked inside a third-party iframe,
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// it returns true in Safari, Edge Spartan and IE (while trying to set a cookie in such scenario would fail).
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// It returns false in Firefox and Chromium-based browsers.
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return navigator && navigator.cookieEnabled && localStorage;
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}
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