38 lines
947 B
JavaScript
38 lines
947 B
JavaScript
import storage from "./storage";
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import { STOKEY_MSAUTH, URL_MICROSOFT_AUTH } from "../config";
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import { fetchPolyfill } from "./fetch";
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const parseMSToken = (token) => JSON.parse(atob(token.split(".")[1])).exp;
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/**
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* 闭包缓存token，减少对storage查询
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* @returns
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*/
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const _msAuth = () => {
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let { token, exp } = {};
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return async () => {
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// 查询内存缓存
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const now = Date.now();
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if (token && exp * 1000 > now + 1000) {
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return [token, exp];
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}
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// 查询storage缓存
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const res = (await storage.getObj(STOKEY_MSAUTH)) || {};
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token = res.token;
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exp = res.exp;
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if (token && exp * 1000 > now + 1000) {
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return [token, exp];
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}
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// 缓存没有或失效，查询接口
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token = await fetchPolyfill(URL_MICROSOFT_AUTH);
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exp = parseMSToken(token);
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await storage.setObj(STOKEY_MSAUTH, { token, exp });
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return [token, exp];
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};
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};
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export const msAuth = _msAuth();
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