refactor: 封装请求

src/lib/lottery-http.ts

@@ -5,33 +5,11 @@ import axios, {
   type AxiosResponse,
 } from "axios";
 
-/** 后端 `{ code, msg, data }`；约定 `code === 0` 表示成功 */
-export type ApiEnvelope<T = unknown> = {
-  code: number;
-  msg: string;
-  data: T;
-};
-
-/** HTTP 状态非 2xx（或 Axios 报错）但其 body 仍是业务信封且 `code !== 0` 时抛出 */
-export class LotteryApiBizError extends Error {
-  readonly code: number;
-  readonly data: unknown;
-
-  constructor(message: string, code: number, data: unknown) {
-    super(message);
-    this.name = "LotteryApiBizError";
-    this.code = code;
-    this.data = data;
-  }
-}
-
-/** body 不是约定的信封结构 */
-export class LotteryApiEnvelopeError extends Error {
-  constructor(message = "响应不是约定的 { code, msg, data }") {
-    super(message);
-    this.name = "LotteryApiEnvelopeError";
-  }
-}
+import {
+  LotteryApiBizError,
+  LotteryApiEnvelopeError,
+} from "@/types/api/errors";
+import { isApiEnvelope } from "@/types/api/envelope";
 
 export function setLotteryRequestLocale(locale: string | null): void {
   if (locale === null) {
@@ -69,18 +47,6 @@ function acceptLanguage(loc: ReturnType<typeof requestLocale>): string {
   return "en-US,en;q=0.9";
 }
 
-function isEnvelope(v: unknown): v is ApiEnvelope {
-  if (v === null || typeof v !== "object") {
-    return false;
-  }
-  const o = v as Record<string, unknown>;
-  return (
-    typeof o.code === "number" &&
-    typeof o.msg === "string" &&
-    "data" in o
-  );
-}
-
 const baseURL = process.env.NEXT_PUBLIC_LOTTERY_API_BASE_URL?.trim();
 
 /**
@@ -112,7 +78,7 @@ function mergeLocaleHeaders(
  * `code !== 0` 抛 {@link LotteryApiBizError}。
  */
 export function unwrapData<T>(payload: unknown): T {
-  if (!isEnvelope(payload)) {
+  if (!isApiEnvelope(payload)) {
     throw new LotteryApiEnvelopeError();
   }
   if (payload.code !== 0) {
@@ -138,7 +104,7 @@ export async function request<T>(config: AxiosRequestConfig): Promise<T> {
   } catch (err: unknown) {
     if (isAxiosError(err) && err.response?.data !== undefined) {
       const body = err.response.data;
-      if (isEnvelope(body) && body.code !== 0) {
+      if (isApiEnvelope(body) && body.code !== 0) {
         throw new LotteryApiBizError(body.msg, body.code, body.data);
       }
     }