117 lines
4.0 KiB
TypeScript
117 lines
4.0 KiB
TypeScript
import Taro from '@tarojs/taro'
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import { store } from '@/store'
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import { clearAuth } from '@/store/authSlice'
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import { ROUTES } from '@/constants/routes'
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import { reLaunch } from '@/utils/navigation'
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import { ApiError, BusinessError, AuthExpiredError } from './errors'
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// 测试环境（内网，开发者工具需勾选「不校验合法域名」）；正式域名为占位符，上线前必须替换（spec D2）
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const BASE_URL = process.env.NODE_ENV === 'development'
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? 'http://192.168.10.11:39101/api/biz'
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: 'https://PROD_PLACEHOLDER/api/biz'
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// 后端约定的未登录业务码（占位 '401'，联调确认后更新——spec D5/Open Questions 1）
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const UNAUTHORIZED_CODES = new Set(['401'])
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// 防重入：跳转登录页进行中不重复触发（并发 401 只踢一次）
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let redirectingToLogin = false
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function redirectToLogin(tokenAtStart: string | null): void {
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if (redirectingToLogin) return
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// 仅当发起请求时的 token 仍是当前登录态才踢，避免在途旧请求 401 误清重新登录后的新会话
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// （token 为 null 的未登录请求 401 时 null === null 成立会踢，属合理行为）
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if (store.getState().auth.token !== tokenAtStart) return
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redirectingToLogin = true
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store.dispatch(clearAuth())
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reLaunch(ROUTES.LOGIN)
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.catch((e: unknown) => {
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// 跳转失败显式记录，避免 unhandled rejection 噪音（debug-first：不静默吞）
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console.error('[http] 踢回登录页失败', e)
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})
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.finally(() => {
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redirectingToLogin = false
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})
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}
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export interface RequestConfig {
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method?: 'GET' | 'POST' | 'PUT' | 'DELETE'
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headers?: Record<string, string>
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timeout?: number
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needAuth?: boolean // 默认 true；登录接口自身传 false
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}
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// 后端统一响应格式（大写 key、字符串状态码）
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export interface ApiEnvelope<T> {
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Code: string
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Message?: string
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Content: T
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RecordCount?: number
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PageIndex?: number
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PageSize?: number
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}
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export async function request<T>(
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url: string,
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params?: Record<string, unknown>,
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config: RequestConfig = {}
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): Promise<T> {
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const method = config.method ?? 'GET'
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const timeout = config.timeout ?? 10000
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// 请求发起时刻的 token 快照：headers 注入与 401 陈旧竞态判断共用同一份
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const tokenAtStart = store.getState().auth.token
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// token 注入：从 authSlice 读取
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const headers: Record<string, string> = {
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'Content-Type': 'application/json',
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...config.headers
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}
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if (config.needAuth !== false) {
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if (tokenAtStart) headers.Authorization = `Bearer ${tokenAtStart}`
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}
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let res: Taro.request.SuccessCallbackResult<ApiEnvelope<T>>
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try {
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res = await Taro.request({
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url: BASE_URL + url,
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method,
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// Taro.request 的 GET 参数同样走 data，运行时自动序列化为 query string
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data: params,
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dataType: 'json',
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timeout,
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header: headers
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})
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} catch (e) {
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throw new ApiError(e instanceof Error ? e.message : '网络异常')
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}
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if (res.statusCode !== 200) {
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if (res.statusCode === 401) {
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redirectToLogin(tokenAtStart)
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throw new AuthExpiredError('登录已过期')
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}
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throw new ApiError(`HTTP ${res.statusCode}`, res.statusCode)
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}
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// 网关返回 200 + 非 envelope 形态（HTML 拦截页/null 等）属传输层异常，不能当业务错分流
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const body = res.data as ApiEnvelope<T> | null | string
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if (body === null || typeof body !== 'object' || body.Code == null) {
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throw new ApiError('响应格式异常', res.statusCode)
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}
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const bizCode = String(body.Code)
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if (UNAUTHORIZED_CODES.has(bizCode)) {
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redirectToLogin(tokenAtStart)
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throw new AuthExpiredError(body.Message || '登录已过期')
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}
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if (bizCode !== '200') {
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throw new BusinessError(body.Message || '业务错误', bizCode)
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}
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return body.Content
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}
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request.get = <T>(url: string, params?: Record<string, unknown>, config?: RequestConfig) =>
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request<T>(url, params, { ...config, method: 'GET' })
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request.post = <T>(url: string, params?: Record<string, unknown>, config?: RequestConfig) =>
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request<T>(url, params, { ...config, method: 'POST' })
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