feat(小程序): 修复运行时与登录链路

banban-mini/src/services/session.ts

@@ -0,0 +1,72 @@
+import Taro from '@tarojs/taro'
+
+const TOKEN_KEY = 'token'
+const TOKEN_TYPE_KEY = 'token_type'
+const USER_ID_KEY = 'user_id'
+const EXPIRES_IN_KEY = 'expires_in'
+const TOKEN_EXPIRES_AT_KEY = 'token_expires_at'
+const LOGIN_PAGE_URL = '/pages/login/index'
+
+let redirectingToLogin = false
+
+export interface StoredLoginSession {
+  access_token: string
+  token_type: string
+  expires_in: number
+  user_id: number
+}
+
+export function saveLoginSession(session: StoredLoginSession): void {
+  const expiresAt = Date.now() + Math.max(session.expires_in, 0) * 1000
+  Taro.setStorageSync(TOKEN_KEY, session.access_token)
+  Taro.setStorageSync(TOKEN_TYPE_KEY, session.token_type)
+  Taro.setStorageSync(USER_ID_KEY, session.user_id)
+  Taro.setStorageSync(EXPIRES_IN_KEY, session.expires_in)
+  Taro.setStorageSync(TOKEN_EXPIRES_AT_KEY, expiresAt)
+}
+
+export function clearLoginSession(): void {
+  Taro.removeStorageSync(TOKEN_KEY)
+  Taro.removeStorageSync(TOKEN_TYPE_KEY)
+  Taro.removeStorageSync(USER_ID_KEY)
+  Taro.removeStorageSync(EXPIRES_IN_KEY)
+  Taro.removeStorageSync(TOKEN_EXPIRES_AT_KEY)
+}
+
+function getTokenExpiresAt(): number {
+  const rawValue = Number(Taro.getStorageSync(TOKEN_EXPIRES_AT_KEY) || 0)
+  return Number.isFinite(rawValue) ? rawValue : 0
+}
+
+export function getToken(): string {
+  const token = Taro.getStorageSync(TOKEN_KEY) || ''
+  if (!token) return ''
+
+  const expiresAt = getTokenExpiresAt()
+  if (expiresAt > 0 && Date.now() >= expiresAt) {
+    clearLoginSession()
+    return ''
+  }
+
+  return token
+}
+
+export function getCurrentUserId(): number {
+  if (!getToken()) return 0
+  return Number(Taro.getStorageSync(USER_ID_KEY) || 0)
+}
+
+export function handleUnauthorized(options: { redirect?: boolean } = {}): void {
+  const { redirect = true } = options
+  clearLoginSession()
+
+  if (!redirect || redirectingToLogin) return
+
+  redirectingToLogin = true
+  setTimeout(() => {
+    Taro.reLaunch({ url: LOGIN_PAGE_URL })
+    setTimeout(() => {
+      redirectingToLogin = false
+    }, 600)
+  }, 120)
+}