/**
 * API 客户端配置
 * 封装 Axios 实例，配置拦截器和 Token 管理
 */
import axios, { AxiosError, InternalAxiosRequestConfig } from "axios";
import { message } from "antd";
import { useAuthStore } from "@/store/authStore";

// 创建 Axios 实例
const apiClient = axios.create({
  baseURL: "/api/v1",
  timeout: 10000,
  headers: {
    "Content-Type": "application/json",
  },
});

// 请求拦截器：添加 Token
apiClient.interceptors.request.use(
  (config: InternalAxiosRequestConfig) => {
    const token = localStorage.getItem("access_token");
    if (token && config.headers) {
      config.headers.Authorization = `Bearer ${token}`;
    }
    return config;
  },
  (error: AxiosError) => {
    return Promise.reject(error);
  },
);

// 响应拦截器：统一错误提示 + 处理未授权状态
apiClient.interceptors.response.use(
  (response) => response,
  async (
    error: AxiosError<{ detail?: string; message?: string; msg?: string }>,
  ) => {
    // 401 → 清除登录态
    if (error.response?.status === 401) {
      useAuthStore.getState().clearAuth();
    }

    // 提取后端返回的错误信息（detail / message / msg）
    const data = error.response?.data;
    const serverMsg = data?.detail || data?.message || data?.msg;
    let handled = false;

    if (error.code === "ECONNABORTED" || error.message?.includes("timeout")) {
      message.error("请求超时，请检查网络后重试");
      handled = true;
    } else if (!error.response) {
      message.error("网络连接异常，请检查网络设置");
      handled = true;
    } else if (serverMsg) {
      message.error(serverMsg);
      handled = true;
    } else {
      const status = error.response?.status;
      if (status === 413) {
        message.error("文件过大，请缩小后重试");
        handled = true;
      } else if (status === 415) {
        message.error("不支持的文件格式");
        handled = true;
      } else if (status === 503) {
        message.error("服务暂不可用，请稍后再试");
        handled = true;
      } else if (status && status >= 500) {
        message.error("服务器繁忙，请稍后再试");
        handled = true;
      }
      // 其他 4xx 且无具体信息时不弹通用提示，由各组件自行处理
    }

    // 标记已展示过提示，组件 onError 可据此跳过重复 toast
    if (handled) {
      // eslint-disable-next-line @typescript-eslint/no-explicit-any
      (error as any).__msgShown = true;
    }

    return Promise.reject(error);
  },
);

export default apiClient;