import axios from "axios";
import { ElNotification, ElMessageBox, ElMessage, ElLoading } from "element-plus";
import { getToken } from "/src/utils/auth";
import errorCode from "/src/utils/errorCode";
import { tansParams, blobValidate } from "/src/utils/ruoyi";
import cache from "/src/plugins/cache";
import { saveAs } from "file-saver";
import useUserStore from "/src/store/modules/user";

let downloadLoadingInstance;
// 是否显示重新登录
export let isRelogin = {
  show: false,
};

axios.defaults.headers["Content-Type"] = "application/json;charset=utf-8";
// 创建axios实例
const service = axios.create({
  // axios中请求配置有baseURL选项，表示请求URL公共部分
  baseURL: import.meta.env.VITE_APP_BASE_API,
  // 超时
  timeout: 100000,
});

// request拦截器
service.interceptors.request.use(
  (config) => {
    // 是否需要设置 token
    const isToken = (config.headers || {}).isToken === false;
    // 是否需要防止数据重复提交
    const isRepeatSubmit = (config.headers || {}).repeatSubmit === false;
    if (getToken() && !isToken) {
      config.headers["Authorization"] = "Bearer " + getToken(); // 让每个请求携带自定义token 请根据实际情况自行修改
    }
    // get请求映射params参数
    if (config.method === "get" && config.params) {
      let url = config.url + "?" + tansParams(config.params);
      url = url.slice(0, -1);
      config.params = {};
      config.url = url;
    }
    if (!isRepeatSubmit && (config.method === "post" || config.method === "put")) {
      const requestObj = {
        url: config.url,
        data: typeof config.data === "object" ? JSON.stringify(config.data) : config.data,
        time: new Date().getTime(),
      };
      const sessionObj = cache.session.getJSON("sessionObj");
      if (sessionObj === undefined || sessionObj === null || sessionObj === "") {
        cache.session.setJSON("sessionObj", requestObj);
      } else {
        const s_url = sessionObj.url; // 请求地址
        const s_data = sessionObj.data; // 请求数据
        const s_time = sessionObj.time; // 请求时间
        const interval = 1000; // 间隔时间(ms)，小于此时间视为重复提交
        if (s_data === requestObj.data && requestObj.time - s_time < interval && s_url === requestObj.url) {
          console.log(requestObj);
          const message = "数据正在处理，请勿重复提交";
          return Promise.reject(new Error(message));
        } else {
          cache.session.setJSON("sessionObj", requestObj);
        }
      }
    }
    return config;
  },
  (error) => {
    console.log(error);
    Promise.reject(error);
  }
);

// 响应拦截器
service.interceptors.response.use(
  (res) => {
    // 未设置状态码则默认成功状态
    const code = res.data.code || 200;
    // 获取错误信息
    const msg = errorCode[code] || res.data.msg || errorCode["default"];
    // 二进制数据则直接返回
    if (res.request.responseType === "blob" || res.request.responseType === "arraybuffer") {
      return res.data;
    }
    if (code === 401) {
      if (!isRelogin.show) {
        isRelogin.show = true;
        ElMessageBox.confirm("登录状态已过期，您可以继续留在该页面，或者重新登录", "系统提示", {
          confirmButtonText: "重新登录",
          cancelButtonText: "取消",
          type: "warning",
        })
          .then(() => {
            isRelogin.show = false;
            useUserStore()
              .logOut()
              .then(() => {
                location.href = "/index";
              });
          })
          .catch(() => {
            isRelogin.show = false;
          });
      }
      return Promise.reject("无效的会话，或者会话已过期，请重新登录。");
    } else if (code === 500) {
      ElMessage({
        message: msg,
        type: "error",
      });
      return Promise.reject(new Error(msg));
    } else if (code === 601) {
      ElMessage({
        message: msg,
        type: "warning",
      });
      return Promise.reject(new Error(msg));
    } else if (code !== 200) {
      ElNotification.error({
        title: msg,
      });
      return Promise.reject("error");
    } else {
      return Promise.resolve(res.data);
    }
  },
  (error) => {
    let { message } = error;
    if (message == "Network Error") {
      message = "后端接口连接异常";
    } else if (message.includes("timeout")) {
      message = "系统接口请求超时";
    } else if (message.includes("Request failed with status code")) {
      message = "系统接口" + message.substr(message.length - 3) + "异常";
    } else if (message.includes("java.lang.NoClassDefFoundError")) {
      message = "服务器部署中，请稍后再试";
    }
    ElMessage({
      message: message,
      type: "error",
      duration: 5 * 1000,
    });
    return Promise.reject(error);
  }
);

// 通用下载方法
export function download(url, params, filename, config) {
  downloadLoadingInstance = ElLoading.service({
    text: "正在下载数据，请稍候",
    background: "rgba(0, 0, 0, 0.7)",
  });
  return service
    .post(url, params, {
      transformRequest: [
        (params) => {
          return tansParams(params);
        },
      ],
      headers: {
        "Content-Type": "application/x-www-form-urlencoded",
      },
      responseType: "blob",
      ...config,
    })
    .then(async (data) => {
      const isLogin = await blobValidate(data);
      if (isLogin) {
        const blob = new Blob([data]);
        saveAs(blob, filename);
      } else {
        const resText = await data.text();
        const rspObj = JSON.parse(resText);
        const errMsg = errorCode[rspObj.code] || rspObj.msg || errorCode["default"];
        ElMessage.error(errMsg);
      }
      downloadLoadingInstance.close();
    })
    .catch((r) => {
      console.error(r);
      ElMessage.error("下载文件出现错误，请联系管理员！");
      downloadLoadingInstance.close();
    });
}

export function get(url, params = {}) {
  return new Promise((resolve, reject) => {
    service
      .get(url, {
        params: params,
      })
      .then(
        (response) => {
          setTimeout(() => {}, 500);
          resolve(response);
        },
        (err) => {
          reject(err);
        }
      );
  });
}

/**
 * 封装post请求
 * @param url
 * @param data
 * @returns {Promise}
 */

export function post(url, data = {}, method) {
  return new Promise((resolve, reject) => {
    service({
      method: method || "post",
      url: url,
      data: data,
    })
      .then((res) => {
        resolve(res.data);
      })
      .catch((err) => {
        reject(err);
      });
  });
}

export function postFile(url, data = {}, method) {
  return new Promise((resolve, reject) => {
    service({
      method: method || "post",
      url: url,
      data: data,
      responseType: "blob",
    })
      .then((res) => {
        resolve(res);
      })
      .catch((err) => {
        reject(err);
      });
  });
}


export function getFile(url, data = {}, method) {
  return new Promise((resolve, reject) => {
    service({
      method: method || "get",
      url: url,
      params: data,
      responseType: "blob",
    })
      .then((res) => {
        resolve(res);
      })
      .catch((err) => {
        reject(err);
      });
  });
}

export default service;
