import axios from 'axios'
import { Message } from 'element-ui'
import { saveAs } from 'file-saver'
import { getToken } from '@/utils/auth'
import errorCode from '@/utils/errorCode'
import { blobValidate } from "@/utils/ruoyi";
import md5 from 'js-md5'

const baseURL = process.env.VUE_APP_BASE_API

export default {
  name(name, query) {
    var url = baseURL + "/caserecord/DownloadFile?fileName=" + encodeURIComponent(name) + "&fileId=" + query;
    axios({
      method: 'get',
      url: url,
      responseType: 'blob',
      headers: { 'Authorization': 'Bearer ' + getToken() }
    }).then((res) => {
      this.readFileAsync(res.data).then((fileContent) => {
        const md5Hash = md5(fileContent);
        if(md5Hash == res.headers["x-file-md5"]){
          const isBlob = blobValidate(res.data);
          if (isBlob) {
            const blob = new Blob([res.data])
            this.saveAs(blob, decodeURIComponent(res.headers['download-filename']))
          } else {
            this.printErrMsg(res.data);
          }
        }else{
          this.$message.warning('文件下载失败，MD5KEY校验错误');
        }
      }).catch((error) => {
        console.error(error);
      });
    });
  },
  readFileAsync(file) {
    return new Promise((resolve, reject) => {
      const reader = new FileReader();
      reader.onload = (event) => {
        resolve(event.target.result);
      };
      reader.onerror = (event) => {
        reject(event.target.error);
      };
      reader.readAsArrayBuffer(file);
    });
  },
  resource(value) {
    var url = baseURL + "/casedownload/download";
    axios({
      method: 'post',
      url: url,
      data:value,
      responseType: 'blob',
      headers: { 'Authorization': 'Bearer ' + getToken() }
    }).then((res) => {
      const isBlob = blobValidate(res.data);
      if (isBlob) {
        const blob = new Blob([res.data])
        this.saveAs(blob, decodeURIComponent(res.headers['download-filename']))
      } else {
        this.printErrMsg(res.data);
      }
    })
  },
  zip(url, name) {
    var url = baseURL + url
    axios({
      method: 'get',
      url: url,
      responseType: 'blob',
      headers: { 'Authorization': 'Bearer ' + getToken() }
    }).then((res) => {
      const isBlob = blobValidate(res.data);
      if (isBlob) {
        const blob = new Blob([res.data], { type: 'application/zip' })
        this.saveAs(blob, name)
      } else {
        this.printErrMsg(res.data);
      }
    })
  },
  saveAs(text, name, opts) {
    saveAs(text, name, opts);
  },
  async printErrMsg(data) {
    const resText = await data.text();
    const rspObj = JSON.parse(resText);
    const errMsg = errorCode[rspObj.code] || rspObj.msg || errorCode['default']
    Message.error(errMsg);
  }
}