'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});

var _extends2 = require('babel-runtime/helpers/extends');

var _extends3 = _interopRequireDefault(_extends2);

exports.T = T;
exports.fileToObject = fileToObject;
exports.genPercentAdd = genPercentAdd;
exports.getFileItem = getFileItem;
exports.removeFileItem = removeFileItem;

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }

function T() {
  return true;
}

// Fix IE file.status problem
// via coping a new Object
function fileToObject(file) {
  return (0, _extends3['default'])({}, file, {
    lastModified: file.lastModified,
    lastModifiedDate: file.lastModifiedDate,
    name: file.name,
    size: file.size,
    type: file.type,
    uid: file.uid,
    percent: 0,
    originFileObj: file
  });
}

/**
 * 生成Progress percent: 0.1 -> 0.98
 *   - for ie
 */
function genPercentAdd() {
  var k = 0.1;
  var i = 0.01;
  var end = 0.98;
  return function (s) {
    var start = s;
    if (start >= end) {
      return start;
    }

    start += k;
    k = k - i;
    if (k < 0.001) {
      k = 0.001;
    }
    return start;
  };
}

function getFileItem(file, fileList) {
  var matchKey = file.uid !== undefined ? 'uid' : 'name';
  return fileList.filter(function (item) {
    return item[matchKey] === file[matchKey];
  })[0];
}

function removeFileItem(file, fileList) {
  var matchKey = file.uid !== undefined ? 'uid' : 'name';
  var removed = fileList.filter(function (item) {
    return item[matchKey] !== file[matchKey];
  });
  if (removed.length === fileList.length) {
    return null;
  }
  return removed;
}