agora-edu-core/lib/utils/index.js

Core APIs for building an online classroom

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.UUAparser = exports.RteRole2EduRole = exports.EduRole2RteRole = exports.DevicePlatform = exports.CustomBtoa = void 0;
exports.getImageSize = getImageSize;
exports.number2Percent = exports.getPlatform = void 0;
var _isNaN = _interopRequireDefault(require("lodash/isNaN"));
var _uaParserJs = require("ua-parser-js");
var _ = require("..");
var _UUAparser;
function _interopRequireDefault(e) { return e && e.__esModule ? e : { default: e }; }
const EduRole2RteRole = (roomType, roleType) => {
  if (roleType === _.EduRoleTypeEnum.teacher) {
    return 'host';
  }
  if (roleType === _.EduRoleTypeEnum.assistant) {
    return 'assistant';
  }
  if ([_.EduRoomTypeEnum.Room1v1Class, _.EduRoomTypeEnum.RoomStudy].includes(roomType) && roleType === _.EduRoleTypeEnum.student) {
    return 'broadcaster';
  }
  if (roleType === _.EduRoleTypeEnum.invisible) {
    return 'invisible';
  }
  if (roleType === _.EduRoleTypeEnum.observer) {
    return 'observer';
  }
  return 'audience';
};
exports.EduRole2RteRole = EduRole2RteRole;
const RteRole2EduRole = (roomType, role) => {
  if (role === 'host') {
    return _.EduRoleTypeEnum.teacher;
  }
  if (role === 'assistant') {
    return _.EduRoleTypeEnum.assistant;
  }

  //下台学生 与班型无关
  if (role === 'audience') {
    return _.EduRoleTypeEnum.student;
  }

  //上台学生 与班型无关
  if (role === 'broadcaster') {
    return _.EduRoleTypeEnum.student;
  }
  if (role === 'invisible') {
    return _.EduRoleTypeEnum.invisible;
  }
  if (role === 'observer') {
    return _.EduRoleTypeEnum.observer;
  }
  return _.EduRoleTypeEnum.none;
};
exports.RteRole2EduRole = RteRole2EduRole;
const number2Percent = (v, fixed = 0) => {
  return !(0, _isNaN.default)(Number(v * 100)) ? Number(v * 100).toFixed(fixed) + '%' : '0%';
};
exports.number2Percent = number2Percent;
const CustomBtoa = input => {
  const keyStr = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';
  let output = '';
  let chr1, chr2, chr3, enc1, enc2, enc3, enc4;
  let i = 0;
  while (i < input.length) {
    chr1 = input[i++];
    chr2 = i < input.length ? input[i++] : Number.NaN; // Not sure if the index
    chr3 = i < input.length ? input[i++] : Number.NaN; // checks are needed here

    enc1 = chr1 >> 2;
    enc2 = (chr1 & 3) << 4 | chr2 >> 4;
    enc3 = (chr2 & 15) << 2 | chr3 >> 6;
    enc4 = chr3 & 63;
    if ((0, _isNaN.default)(chr2)) {
      enc3 = enc4 = 64;
    } else if ((0, _isNaN.default)(chr3)) {
      enc4 = 64;
    }
    output += keyStr.charAt(enc1) + keyStr.charAt(enc2) + keyStr.charAt(enc3) + keyStr.charAt(enc4);
  }
  return output;
};
exports.CustomBtoa = CustomBtoa;
var UAType = /*#__PURE__*/function (UAType) {
  UAType["console"] = "console";
  UAType["mobile"] = "mobile";
  UAType["tablet"] = "tablet";
  UAType["smarttv"] = "starttv";
  UAType["wearable"] = "wearable";
  UAType["embedded"] = "embedded";
  return UAType;
}(UAType || {});
let DevicePlatform = exports.DevicePlatform = /*#__PURE__*/function (DevicePlatform) {
  DevicePlatform[DevicePlatform["WEB"] = 1] = "WEB";
  DevicePlatform[DevicePlatform["MACOS"] = 2] = "MACOS";
  DevicePlatform[DevicePlatform["WINDOWS"] = 3] = "WINDOWS";
  DevicePlatform[DevicePlatform["IOS"] = 4] = "IOS";
  DevicePlatform[DevicePlatform["ANDROID"] = 5] = "ANDROID";
  DevicePlatform[DevicePlatform["H5"] = 6] = "H5";
  return DevicePlatform;
}({});
class UUAparser {
  static get getType() {
    return UUAparser._UAParserInstance.getDevice().type;
  }
  static get mobileBrowser() {
    const isTablet = navigator.maxTouchPoints && navigator.maxTouchPoints > 2 && /MacIntel/.test(navigator.platform) || 'ontouchend' in document;
    return UUAparser.getType === UAType.mobile || UUAparser.getType === UAType.tablet || isTablet;
  }
}
exports.UUAparser = UUAparser;
_UUAparser = UUAparser;
UUAparser._userAgent = window.navigator.userAgent;
UUAparser._UAParserInstance = new _uaParserJs.UAParser(_UUAparser._userAgent);
const getPlatform = () => {
  let platform = DevicePlatform.WEB;
  const isElectron = window && window.process && window.process.versions && window.process.versions['electron'];
  if (isElectron) {
    if (process.platform == 'darwin') {
      platform = DevicePlatform.MACOS;
    }
    if (process.platform == 'win32') {
      platform = DevicePlatform.WINDOWS;
    }
  } else if (UUAparser.mobileBrowser) {
    platform = DevicePlatform.H5;
  } else {
    platform = DevicePlatform.WEB;
  }
  return platform;
};
exports.getPlatform = getPlatform;
function getImageSize(file) {
  const image = new Image();
  const url = URL.createObjectURL(file);
  const {
    innerWidth,
    innerHeight
  } = window;
  // shrink the image a little to fit the screen
  const maxWidth = innerWidth * 0.8;
  const maxHeight = innerHeight * 0.8;
  image.src = url;
  return new Promise(resolve => {
    image.onload = () => {
      URL.revokeObjectURL(url);
      const {
        width,
        height
      } = image;
      let scale = 1;
      if (width > maxWidth || height > maxHeight) {
        scale = Math.min(maxWidth / width, maxHeight / height);
      }
      resolve({
        width: Math.floor(width * scale),
        height: Math.floor(height * scale)
      });
    };
    image.onerror = () => {
      resolve({
        width: innerWidth,
        height: innerHeight
      });
    };
  });
}