export default {
    //获取图片
    imgPreview(file, callback) {
      let self = this;
      let name = file.name.split('.')[0]
      //判断支不支持FileReader
      if (!file || !window.FileReader) return;
      if (/^image/.test(file.type)) {
          //创建一个reader
          let reader = new FileReader();
          //将图片转成base64格式
          reader.readAsDataURL(file);
          //读取成功后的回调
          reader.onloadend = function() {
              let result = this.result;
              let img = new Image();
              let formData = new FormData();
              img.src = result;
              img.onload = function() {
                  let data = self.compress(img,name);
                  let blob = self.dataURItoBlob(data);
                  formData.append("file", blob,name+'.jpeg');
                  //图片预览,配置文件,formData数据;
                  callback && callback(data,formData);
              };
          };
      }
  },
  // 压缩图片
  compress(img) {
      let canvas = document.createElement("canvas");
      let ctx = canvas.getContext("2d");
      // let initSize = img.src.length;
      let width = img.width;
      let height = img.height;
      canvas.width = width;
      canvas.height = height;
      // 铺底色
      ctx.fillStyle = "#fff";
      ctx.fillRect(0, 0, canvas.width, canvas.height);
      ctx.drawImage(img, 0, 0, width, height);

      //进行压缩
      let ndata = canvas.toDataURL("image/jpeg", 0.4);
      // console.log("*******压缩后的图片大小*******");
      // console.log(ndata)
      return ndata;
  },

  // base64转成bolb对象
  dataURItoBlob(base64Data) {
      var byteString;
      if (base64Data.split(",")[0].indexOf("base64") >= 0)
          byteString = atob(base64Data.split(",")[1]);
      else byteString = unescape(base64Data.split(",")[1]);
      var mimeString = base64Data
          .split(",")[0]
          .split(":")[1]
          .split(";")[0];
      var ia = new Uint8Array(byteString.length);
      for (var i = 0; i < byteString.length; i++) {
          ia[i] = byteString.charCodeAt(i);
      }
      return new Blob([ia], { type: mimeString});
    },


    //
    setApiToken(name, controller, time, modules) {
        let str = name + 'customer-service' + controller + time + modules
        return str.toLocaleLowerCase()
    },

    /**
     * 时间戳转日期自定义时间格式
     * timeStamp:时间戳
     * custom:转换日期时定义年月日用是什么符号隔开
     * isDtae:0=月份、1=日期、3=时间
     */
    customFormatDateTime(timeStamp,custom,isDtae) {
        var date = new Date();
        date.setTime(timeStamp * 1000);
        var y = date.getFullYear();
        var m = date.getMonth() + 1;
        m = m < 10 ? ('0' + m) : m;
        var d = date.getDate();
        d = d < 10 ? ('0' + d) : d;
        var h = date.getHours();
        h = h < 10 ? ('0' + h) : h;
        var minute = date.getMinutes();
        var second = date.getSeconds();
        minute = minute < 10 ? ('0' + minute) : minute;
        second = second < 10 ? ('0' + second) : second;
        if (isDtae == 0){
        return y + custom + m //+'student';
        }else if (isDtae ==1){
        return y + custom + m + custom + d;
        }else{
        return y + '-' + m + '-' + d + ' ' + h + ':' + minute //+ ':' + second;
        }
    },

    /*****************屏蔽关键字******************/
    /**
     * 
     * @param {*} data 
     * @param {*} sensitive 
     * @param {*} 
     */
    shieldingKeyword(data,sensitive) {
        //将敏感词组用|转换字符串
        let snstive = sensitive.join('|');
        let num = 0,text='';
        //匹配出会话中的敏感词
         data.replace(eval('/' + snstive + '/g'), (res) => {
            // var str = '';
            console.log(res)
            text +=','+res;
            // for (var i = 0; i < res.length; i++) {
            //     str += '*';
            // }
            num ++;
            // return str;
        })

        return {
            text,
            num
        }
    },
}