压缩历史至 95081aff

2026-10-08 16:46:37 +08:00 · 2026-06-08 20:34:27 +08:00
commit 8a782525de
435 changed files with 71146 additions and 0 deletions
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+import axios, { AxiosError, AxiosResponse, CancelTokenSource, InternalAxiosRequestConfig } from 'axios';
+import { toast } from 'sonner';
+import { showRiskWarningToast } from '@/components/common/risk/risk-warning-toast';
+import { apiConfig } from './config';
+import {
+  ApiErrorBase,
+  NetworkError,
+  TimeoutError,
+  ForbiddenError,
+  NotFoundError,
+  ServerError,
+  ValidationError,
+} from './errors';
+import { ApiError, ApiResponse } from './types';
+
+/**
+ * API 客户端实例
+ * 统一处理请求配置、响应解析和错误处理
+ */
+const apiClient = axios.create({
+  baseURL: apiConfig.baseURL,
+  timeout: apiConfig.timeout,
+  withCredentials: apiConfig.withCredentials,
+  headers: {
+    'Content-Type': 'application/json',
+  },
+});
+
+/**
+ * 请求取消令牌存储
+ */
+const cancelTokens = new Map<string, CancelTokenSource>();
+
+/**
+ * 请求缓存存储
+ * 存储正在进行的请求 Promise，避免重复请求
+ */
+const pendingRequests = new Map<string, Promise<AxiosResponse<ApiResponse>>>();
+
+const RISK_LEVEL_HEADER = 'x-credit-risk-level';
+const RISK_LABELS_HEADER = 'x-credit-risk-labels';
+const RISK_ITEMS_HEADER = 'x-credit-risks';
+const RISK_BLOCKED_CODE = 'RISK_BLOCKED';
+const RISK_BLOCKED_EVENT = 'credit-risk-blocked';
+
+interface RiskItem {
+  label: string;
+  value?: string;
+  desc?: string;
+}
+
+interface RiskInfo {
+  risk_level: string;
+  risk_labels: string[];
+  risks: RiskItem[];
+}
+
+function decodeBase64JSON(value?: string): unknown {
+  if (!value || typeof window === 'undefined') return [];
+
+  try {
+    const binary = window.atob(value);
+    const bytes = Uint8Array.from(binary, char => char.charCodeAt(0));
+    const json = new TextDecoder().decode(bytes);
+    return JSON.parse(json);
+  } catch {
+    return [];
+  }
+}
+
+function normalizeRiskItems(value: unknown): RiskItem[] {
+  if (!Array.isArray(value)) return [];
+
+  return value.reduce<RiskItem[]>((items, item) => {
+    if (!item || typeof item !== 'object') return items;
+
+    const label = 'label' in item ? (item as { label?: unknown }).label : undefined;
+    if (typeof label !== 'string' || !label.trim()) return items;
+
+    const value = 'value' in item ? (item as { value?: unknown }).value : undefined;
+    const desc = 'desc' in item ? (item as { desc?: unknown }).desc : undefined;
+    items.push({
+      label: label.trim(),
+      value: typeof value === 'string' ? value.trim() : undefined,
+      desc: typeof desc === 'string' ? desc.trim() : undefined,
+    });
+
+    return items;
+  }, []);
+}
+
+function normalizeRiskLabels(value: unknown): string[] {
+  return Array.isArray(value) ? value.filter((label): label is string => typeof label === 'string' && !!label.trim()).map(label => label.trim()) : [];
+}
+
+function riskLabelsFromItems(items: RiskItem[]): string[] {
+  return items.map(item => item.label).filter(Boolean);
+}
+
+function riskInfoFromHeaders(headers: AxiosResponse['headers']): RiskInfo | null {
+  const riskLevel = headers[RISK_LEVEL_HEADER];
+  if (typeof riskLevel !== 'string' || !riskLevel) return null;
+
+  const riskLabelsHeader = headers[RISK_LABELS_HEADER];
+  const riskItemsHeader = headers[RISK_ITEMS_HEADER];
+  const risks = typeof riskItemsHeader === 'string' ? normalizeRiskItems(decodeBase64JSON(riskItemsHeader)) : [];
+  const labels = typeof riskLabelsHeader === 'string' ? normalizeRiskLabels(decodeBase64JSON(riskLabelsHeader)) : riskLabelsFromItems(risks);
+
+  return {
+    risk_level: riskLevel,
+    risk_labels: labels,
+    risks,
+  };
+}
+
+function riskInfoFromDetails(details: unknown): RiskInfo | null {
+  if (!details || typeof details !== 'object') return null;
+
+  const riskLevel = 'risk_level' in details ? (details as { risk_level?: unknown }).risk_level : undefined;
+  const riskLabels = 'risk_labels' in details ? (details as { risk_labels?: unknown }).risk_labels : undefined;
+  const riskItems = 'risks' in details ? (details as { risks?: unknown }).risks : undefined;
+  if (typeof riskLevel !== 'string' || !riskLevel) return null;
+
+  const risks = normalizeRiskItems(riskItems);
+  const labels = normalizeRiskLabels(riskLabels);
+
+  return {
+    risk_level: riskLevel,
+    risk_labels: labels.length ? labels : riskLabelsFromItems(risks),
+    risks,
+  };
+}
+
+function showRiskWarning(riskInfo: RiskInfo): void {
+  showRiskWarningToast(riskInfo);
+}
+
+function showRiskBlockedDialog(riskInfo: RiskInfo): void {
+  if (typeof window === 'undefined') return;
+  window.dispatchEvent(new CustomEvent<RiskInfo>(RISK_BLOCKED_EVENT, { detail: riskInfo }));
+}
+
+/**
+ * 生成请求的唯一键
+ * 包含方法、URL 和请求数据的哈希，确保不同参数的请求不会被误取消
+ */
+function getRequestKey(config: { method?: string; url?: string; data?: unknown }): string {
+  const baseKey = `${ config.method?.toUpperCase() }_${ config.url }`;
+
+  /* 序列化加入键中 */
+  if (config.data) {
+    try {
+      const dataHash = JSON.stringify(config.data);
+      return `${ baseKey }_${ dataHash }`;
+    } catch {
+      // 失败使用基础键
+      return baseKey;
+    }
+  }
+
+  return baseKey;
+}
+
+/**
+ * 请求拦截器
+ * 添加取消令牌和其他配置
+ */
+apiClient.interceptors.request.use(
+  (config: InternalAxiosRequestConfig) => {
+    const requestKey = getRequestKey(config);
+    const source = axios.CancelToken.source();
+    config.cancelToken = source.token;
+    cancelTokens.set(requestKey, source);
+
+    return config;
+  },
+  (error: unknown) => Promise.reject(error),
+);
+
+/**
+ * 直接启动登录流程
+ * @param currentPath - 当前路径，用于登录成功后重定向回来
+ */
+function initiateLogin(currentPath: string): Promise<never> {
+  if (!currentPath.startsWith('/login') && !currentPath.startsWith('/callback')) {
+    if (typeof window !== 'undefined') {
+      sessionStorage.setItem('redirect_after_login', currentPath);
+      const loginUrl = new URL('/login', window.location.origin);
+      loginUrl.searchParams.set('callbackUrl', currentPath);
+      window.location.href = loginUrl.toString();
+    }
+  }
+
+  return new Promise<never>(() => { });
+}
+
+/**
+ * 响应拦截器
+ * 处理 API 响应和统一错误处理
+ */
+apiClient.interceptors.response.use(
+  (response: AxiosResponse<ApiResponse>) => {
+    const requestKey = getRequestKey(response.config);
+    cancelTokens.delete(requestKey);
+    pendingRequests.delete(requestKey);
+
+    const riskInfo = riskInfoFromHeaders(response.headers);
+    if (riskInfo) {
+      showRiskWarning(riskInfo);
+    }
+
+    return response;
+  },
+  (error: AxiosError<ApiError>) => {
+    if (error.config) {
+      const requestKey = getRequestKey(error.config);
+      cancelTokens.delete(requestKey);
+      pendingRequests.delete(requestKey);
+    }
+
+    /* 请求被取消时静默处理 */
+    if (axios.isCancel(error)) {
+      const cancelError = new Error(error.message || '请求已被取消') as Error & { __CANCEL__?: boolean };
+      cancelError.__CANCEL__ = true;
+      return Promise.reject(cancelError);
+    }
+
+    /* 401 未授权错误 */
+    if (error.response?.status === 401) {
+      return initiateLogin(window.location.pathname + window.location.search);
+    }
+
+    /* 403 权限不足错误 */
+    if (error.response?.status === 403) {
+      if (error.response.data?.error_code === RISK_BLOCKED_CODE) {
+        const riskInfo = riskInfoFromDetails(error.response.data.details) || riskInfoFromHeaders(error.response.headers);
+        if (riskInfo) {
+          showRiskBlockedDialog(riskInfo);
+        }
+
+        return Promise.reject(
+          new ForbiddenError(error.response.data?.error_msg || '账号存在风险', RISK_BLOCKED_CODE, error.response.data?.details),
+        );
+      }
+
+      return Promise.reject(
+        new ForbiddenError(error.response.data?.error_msg || '权限不足，请过盾后重试', error.response.data?.error_code, error.response.data?.details),
+      );
+    }
+
+    /* 404 资源未找到错误 */
+    if (error.response?.status === 404) {
+      return Promise.reject(
+        new NotFoundError(error.response.data?.error_msg || '请求的资源不存在'),
+      );
+    }
+
+    /* 400 验证错误 */
+    if (error.response?.status === 400) {
+      return Promise.reject(
+        new ValidationError(
+          error.response.data?.error_msg || '请求参数验证失败',
+          error.response.data?.details,
+        ),
+      );
+    }
+
+    /* 429 速率限制错误 */
+    if (error.response?.status === 429) {
+      const retryAfter = error.response.headers?.['retry-after'];
+      const message = error.response.data?.error_msg ||
+        `请求过于频繁，请 ${ retryAfter || '稍后' } 秒后重试`;
+
+      toast.error('请求频率限制', {
+        description: message,
+        id: 'rate-limit-error',
+      });
+
+      return Promise.reject(
+        new ApiErrorBase(message, 'RATE_LIMITED', 429),
+      );
+    }
+
+    /* 5xx 服务器错误 */
+    if (error.response && error.response.status >= 500) {
+      return Promise.reject(
+        new ServerError(
+          error.response.data?.error_msg || '服务器内部错误，请稍后重试',
+          error.response.status,
+        ),
+      );
+    }
+
+    /* 网络超时错误 */
+    if (error.code === 'ECONNABORTED' || error.code === 'ETIMEDOUT') {
+      return Promise.reject(new TimeoutError());
+    }
+
+    /* 网络连接错误（ECONNREFUSED, ERR_NETWORK 等） */
+    if (
+      !error.response ||
+      error.code === 'ECONNREFUSED' ||
+      error.code === 'ERR_NETWORK' ||
+      error.message?.includes('Network Error') ||
+      error.message?.includes('Failed to fetch')
+    ) {
+      return Promise.reject(
+        new NetworkError('无法连接到服务器，请确认后端服务已启动'),
+      );
+    }
+
+    /* 其他后端返回的错误 */
+    if (error.response?.data?.error_msg) {
+      return Promise.reject(
+        new ApiErrorBase(
+          error.response.data.error_msg,
+          error.response.data.error_code,
+          error.response.status,
+          error.response.data.details,
+        ),
+      );
+    }
+
+    /* 兜底错误 */
+    return Promise.reject(
+      new ApiErrorBase(error.message || '网络请求失败'),
+    );
+  },
+);
+
+/**
+ * 取消指定请求
+ * @param method - 请求方法
+ * @param url - 请求 URL
+ */
+export function cancelRequest(method: string, url: string): void {
+  const requestKey = `${ method.toUpperCase() }_${ url }`;
+  const source = cancelTokens.get(requestKey);
+  if (source) {
+    source.cancel('请求已被手动取消');
+    cancelTokens.delete(requestKey);
+  }
+}
+
+/**
+ * 取消所有请求
+ */
+export function cancelAllRequests(): void {
+  cancelTokens.forEach((source) => {
+    source.cancel('所有请求已被取消');
+  });
+  cancelTokens.clear();
+}
+
+/**
+ * 创建带有请求去重功能的请求方法
+ * @param method HTTP 方法名
+ * @param hasBody 是否包含请求体
+ */
+function createRequestMethod(
+  method: 'get' | 'post' | 'put' | 'patch' | 'delete',
+  hasBody: boolean
+) {
+  if (hasBody) {
+    return <T = ApiResponse>(url: string, data?: unknown, config?: InternalAxiosRequestConfig) => {
+      const requestKey = getRequestKey({ method: method.toUpperCase(), url, data });
+
+      if (pendingRequests.has(requestKey)) {
+        return pendingRequests.get(requestKey) as Promise<AxiosResponse<T>>;
+      }
+
+      const promise = apiClient[method]<T>(url, data, config);
+      pendingRequests.set(requestKey, promise as Promise<AxiosResponse<ApiResponse>>);
+
+      promise.finally(() => {
+        pendingRequests.delete(requestKey);
+      });
+
+      return promise;
+    };
+  }
+
+  return <T = ApiResponse>(url: string, config?: InternalAxiosRequestConfig) => {
+    const requestKey = getRequestKey({ method: method.toUpperCase(), url, data: config?.params });
+
+    if (pendingRequests.has(requestKey)) {
+      return pendingRequests.get(requestKey) as Promise<AxiosResponse<T>>;
+    }
+
+    const promise = apiClient[method]<T>(url, config);
+    pendingRequests.set(requestKey, promise as Promise<AxiosResponse<ApiResponse>>);
+
+    promise.finally(() => {
+      pendingRequests.delete(requestKey);
+    });
+
+    return promise;
+  };
+}
+
+/**
+ * 包装的 API 客户端
+ * 在原有 axios 实例基础上添加请求缓存功能
+ */
+const wrappedApiClient = {
+  get: createRequestMethod('get', false) as <T = ApiResponse>(url: string, config?: InternalAxiosRequestConfig) => Promise<AxiosResponse<T>>,
+  post: createRequestMethod('post', true) as <T = ApiResponse>(url: string, data?: unknown, config?: InternalAxiosRequestConfig) => Promise<AxiosResponse<T>>,
+  put: createRequestMethod('put', true) as <T = ApiResponse>(url: string, data?: unknown, config?: InternalAxiosRequestConfig) => Promise<AxiosResponse<T>>,
+  patch: createRequestMethod('patch', true) as <T = ApiResponse>(url: string, data?: unknown, config?: InternalAxiosRequestConfig) => Promise<AxiosResponse<T>>,
+  delete: createRequestMethod('delete', false) as <T = ApiResponse>(url: string, config?: InternalAxiosRequestConfig) => Promise<AxiosResponse<T>>,
+};
+
+export default wrappedApiClient;