import { defHttp } from '@/utils/http/axios';
import { message } from 'ant-design-vue';

import * as streamSaver from "streamsaver"
import { getToken } from '@/utils/auth';
import { useGlobSetting } from '@/hooks/setting';

const { apiUrl } = useGlobSetting();
/**
 * 下载文件
 * @param url 文件路径
 * @param fileName 文件名
 * @param parameter
 * @returns {*}
 */
export const downloadFile = (url, fileName?, parameter?) => {
  return getFileblob(url, parameter).then((data) => {
    if (!data || data.size === 0) {
      message.warning('文件下载失败');
      return;
    }
    if (typeof window.navigator.msSaveBlob !== 'undefined') {
      window.navigator.msSaveBlob(new Blob([data]), fileName);
    } else {
      let url = window.URL.createObjectURL(new Blob([data]));
      let link = document.createElement('a');
      link.style.display = 'none';
      link.href = url;
      link.setAttribute('download', fileName);
      document.body.appendChild(link);
      link.click();
      document.body.removeChild(link); //下载完成移除元素
      window.URL.revokeObjectURL(url); //释放掉blob对象
    }
  });
};
export const downloadResource = async (url, fileName,parameter) =>{

  url = apiUrl + url+"?path="+encodeURIComponent(parameter.path)+"&fileName="+parameter.fileName
  let filename = fileName
  if (!fileName) {
      filename = url.substring(url.lastIndexOf('/') + 1);
  }
  console.log(filename,'filename')
  return fetch(url, {
      method: 'GET',
      cache: 'no-cache',
      headers:{
        Authorization: `Bearer ${getToken()}`,
        // clientId: clientId,
      },
      
  }).then(res => {
      const fileStream = streamSaver.createWriteStream(filename,{
          //增加小视图,体现下载进度条与总大小
          size : res.headers.get("content-length")
      })
      const readableStream = res.body
      if (window.WritableStream && readableStream.pipeTo) {
          return readableStream.pipeTo(fileStream)
      }
      window.writer = fileStream.getWriter()
      const reader = res.body.getReader()
      const pump = () => reader.read()
          .then(res => res.done
              ? window.writer.close()
              : window.writer.write(res.value).then(pump))
      pump()
  })
}
/**
 * 下载文件 用于excel导出
 * @param url
 * @param parameter
 * @returns {*}
 */
export const getFileblob = (url, parameter) => {
  return defHttp.get(
    {
      url: url,
      params: parameter,
      responseType: 'blob',
      timeout: 1000 * 60 * 5, // 5分钟超时
    },
    { isTransformResponse: false }
  );
};