R524809
112 lines
2.6 KiB
TypeScript
112 lines
2.6 KiB
TypeScript
interface UserInfo {
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_id: string;
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openid: string;
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unionid: string | null;
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nickName: string | null;
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avatarUrl: string | null;
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totalDownloads: number;
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createdAt: string;
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lastActiveAt: string;
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}
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const STORAGE_KEY = 'user_info';
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const STORAGE_EXPIRE_KEY = 'user_info_expire';
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const EXPIRE_DURATION = 7 * 24 * 60 * 60 * 1000; // 7 天
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/** 内存中的用户数据（App 生命周期内有效） */
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let currentUser: UserInfo | null = null;
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/** 登录进行中的 Promise（防止并发重复调用） */
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let loginPromise: Promise<UserInfo> | null = null;
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/**
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* 获取当前用户，优先内存 → Storage → 云函数登录
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*/
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export async function getUser(): Promise<UserInfo> {
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// 1. 内存中有，直接返回
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if (currentUser) return currentUser;
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// 2. 尝试从 Storage 读取
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const cached = loadFromStorage();
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if (cached) {
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currentUser = cached;
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return cached;
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}
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// 3. 静默登录（防止并发）
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if (!loginPromise) {
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loginPromise = silentLogin().finally(() => {
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loginPromise = null;
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});
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}
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return loginPromise;
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}
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/**
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* 静默登录：调用云函数
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*/
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async function silentLogin(): Promise<UserInfo> {
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const res = await wx.cloud.callFunction({
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name: 'userLogin',
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});
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const result = (res?.result as any) || {};
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if (result.code !== 0) {
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throw new Error('登录失败');
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}
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const user = result.data as UserInfo;
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currentUser = user;
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saveToStorage(user);
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return user;
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}
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/**
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* 从 Storage 读取用户数据（检查过期）
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*/
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function loadFromStorage(): UserInfo | null {
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try {
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const expire = wx.getStorageSync(STORAGE_EXPIRE_KEY);
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if (!expire || Date.now() > expire) {
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wx.removeStorageSync(STORAGE_KEY);
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wx.removeStorageSync(STORAGE_EXPIRE_KEY);
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return null;
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}
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const user = wx.getStorageSync(STORAGE_KEY);
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return user || null;
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} catch {
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return null;
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}
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}
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/**
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* 写入 Storage
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*/
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function saveToStorage(user: UserInfo): void {
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try {
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wx.setStorageSync(STORAGE_KEY, user);
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wx.setStorageSync(STORAGE_EXPIRE_KEY, Date.now() + EXPIRE_DURATION);
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} catch {
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// Storage 写入失败不影响主流程
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}
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}
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/**
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* 清除登录状态
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*/
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export function clearUser(): void {
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currentUser = null;
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wx.removeStorageSync(STORAGE_KEY);
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wx.removeStorageSync(STORAGE_EXPIRE_KEY);
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}
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/**
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* 强制刷新用户数据（跳过缓存）
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*/
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export async function refreshUser(): Promise<UserInfo> {
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clearUser();
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return await silentLogin();
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}
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export type { UserInfo };
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