优化

src/shared/api/overseasHttp.ts

@@ -0,0 +1,77 @@
+import axios, { type InternalAxiosRequestConfig } from 'axios'
+import { parseApiJsonResponse } from '@chongchong/shared'
+import { refreshAuthenticatedSession } from './http'
+
+interface CachedOverseasToken {
+  accessToken: string
+  refreshAfter: number
+}
+
+type RetryableOverseasRequestConfig = InternalAxiosRequestConfig & { _overseasAuthRetry?: boolean }
+
+const TOKEN_REFRESH_SAFETY_WINDOW_MS = 30_000
+
+let cachedToken: CachedOverseasToken | null = null
+
+export const overseasHttp = axios.create({
+  baseURL: import.meta.env.VITE_OVERSEAS_API_BASE_URL || '/overseas-api',
+  timeout: 15_000,
+  transformResponse: [(data: unknown) => parseApiJsonResponse(data)],
+})
+
+function currentOverseasAccessToken() {
+  return cachedToken && cachedToken.refreshAfter > Date.now() ? cachedToken.accessToken : ''
+}
+
+async function requireOverseasAccessToken() {
+  const current = currentOverseasAccessToken()
+  if (current) return current
+  await refreshAuthenticatedSession()
+  const refreshed = currentOverseasAccessToken()
+  if (!refreshed) throw new Error('当前环境未签发海外访问令牌')
+  return refreshed
+}
+
+export function replaceOverseasAccessToken(accessToken: string | null, expiresIn: number) {
+  if (!accessToken && expiresIn === 0) {
+    cachedToken = null
+    return
+  }
+  if (!accessToken || !Number.isFinite(expiresIn) || expiresIn <= 0) {
+    throw new Error('海外访问令牌响应无效')
+  }
+  cachedToken = {
+    accessToken,
+    refreshAfter: Date.now() + Math.max(0, expiresIn * 1000 - TOKEN_REFRESH_SAFETY_WINDOW_MS),
+  }
+}
+
+export function clearOverseasAccessToken() {
+  cachedToken = null
+}
+
+overseasHttp.interceptors.request.use(async (config) => {
+  const accessToken = await requireOverseasAccessToken()
+  config.headers.Authorization = `Bearer ${accessToken}`
+  return config
+})
+
+overseasHttp.interceptors.response.use(
+  (response) => response.data,
+  async (error) => {
+    const config = error.config as RetryableOverseasRequestConfig | undefined
+    if (error.response?.status !== 401 || !config || config._overseasAuthRetry) {
+      return Promise.reject(error)
+    }
+    config._overseasAuthRetry = true
+    clearOverseasAccessToken()
+    try {
+      await refreshAuthenticatedSession()
+      const accessToken = await requireOverseasAccessToken()
+      config.headers.Authorization = `Bearer ${accessToken}`
+      return overseasHttp.request(config)
+    } catch {
+      return Promise.reject(error)
+    }
+  },
+)