yapi/client/common.js

const  moment = require('moment');
const  constants = require ('./constants/variable')
const Mock =  require('mockjs')
const json5 = require('json5')
const MockExtra = require('common/mock-extra.js')

const Roles = {
  0 : 'admin',
  10: 'owner',
  20: 'dev',
  30: 'guest',
  40: 'member'
}

const roleAction = {
  'manageUserlist' : 'admin',
  'changeMemberRole': 'owner',
  'editInterface': 'dev',
  'viewPrivateInterface': 'guest',
  'viewGroup': 'guest'
}

function isJson(json){
  if(!json) return false;
  try{
    json = JSON.parse(json);
    return json;
  }catch(e){
    return false;
  }
}

exports.isJson = isJson;

function isJson5(json){
  if(!json) return false;
  try{
    json = json5.parse(json);
    return json;
  }catch(e){
    return false;
  }
}

exports.json5_parse = function(json){
  try{
    return json5.parse(json);
  }catch(err){
    return json;
  }
}

exports.json_parse = function(json){
  try{
    return JSON.parse(json);
  }catch(err){
    return json;
  }
}

function deepCopyJson(json){
  return JSON.parse(JSON.stringify(json));
}

exports.deepCopyJson = deepCopyJson;

exports.isJson5 = isJson5;

exports.checkAuth = (action, role)=>{
  return Roles[roleAction[action]] <= Roles[role];
}

exports.formatTime = (timestamp) => {
  return moment.unix(timestamp).format("YYYY-MM-DD HH:mm:ss")
}

// 防抖函数，减少高频触发的函数执行的频率
// 请在 constructor 里使用:
// import { debounce } from '$/common';
// this.func = debounce(this.func, 400);
exports.debounce = (func, wait) => {
  let timeout;
  return function () {
    clearTimeout(timeout);
    timeout = setTimeout(func, wait);
  };
};


// 从 Javascript 对象中选取随机属性
exports.pickRandomProperty = (obj) => {
  let result;
  let count = 0;
  for (let prop in obj)
    if (Math.random() < 1 / ++count) result = prop;
  return result;
}

exports.getImgPath = (path, type) => {
  let rate = window.devicePixelRatio >= 2 ? 2 : 1;
  return `${path}@${rate}x.${type}`;
}

function trim(str) {
  if (!str) {
    return str;
  }

  str = str + '';

  return str.replace(/(^\s*)|(\s*$)/g, '');
}

exports.trim = trim;

exports.handlePath = (path) => {
  path = trim(path);
  if (!path) return path;
  if (path === '/') return '';
  path = path[0] !== '/' ? '/' + path : path;
  path = path[path.length - 1] === '/' ? path.substr(0, path.length - 1) : path;
  return path;
}

exports.handleApiPath = (path) => {
  if (!path) return '';
  path = trim(path);  
  path = path[0] !== '/' ? '/' + path : path;
  return path;
}

// 名称限制 constants.NAME_LIMIT 字符
exports.nameLengthLimit = (type) => {
  // 返回字符串长度，汉字计数为2
  const strLength = (str) => {
    let length = 0;
    for (let i = 0; i < str.length; i++) {
      str.charCodeAt(i) > 255 ? length += 2 : length++;
    }
    return length;
  }
  // 返回 form中的 rules 校验规则
  return [{
    required: true,
    validator(rule, value, callback) {
      const len = value ? strLength(value) : 0;
      if (len > constants.NAME_LIMIT) {
        callback('请输入' + type + '名称，长度不超过' + constants.NAME_LIMIT + '字符(中文算作2字符)!');
      } else if (len === 0) {
        callback('请输入' + type + '名称，长度不超过' + constants.NAME_LIMIT + '字符(中文算作2字符)!');
      } else {
        return callback();
      }
    }
  }]
}

// 实现 Object.entries() 方法
exports.entries = (obj) => {
  let res = [];
  for(let key in obj) {
    res.push([key, obj[key]]);
  }
  return res;
}


exports.getMockText = (mockTpl) => {
  try{
    return JSON.stringify(Mock.mock(MockExtra(json5.parse(mockTpl), {})), null, "  ")
  }catch(err){
    return ''
  }
  
}

/**
 * 合并后新的对象属性与 Obj 一致，nextObj 有对应属性则取 nextObj 属性值，否则取 Obj 属性值
 * @param  {Object} Obj     旧对象
 * @param  {Object} nextObj 新对象
 * @return {Object}           合并后的对象
 */
exports.safeAssign = (Obj, nextObj) => {
  let keys = Object.keys(nextObj);
  return Object.keys(Obj).reduce((result, value) => {
      if (keys.indexOf(value) >= 0) {
          result[value] = nextObj[value];
      } else {
          result[value] = Obj[value];
      }
      return result;
  }, {});
};

// 交换数组的位置
exports.arrayChangeIndex = (arr, start, end) => {
  
  let newArr = [].concat(arr);
  // newArr[start] = arr[end];
  // newArr[end] = arr[start];
  let startItem = newArr[start];
  newArr.splice(start, 1);
  // end自动加1
  newArr.splice(end, 0, startItem)
  
  let changes = [];
  newArr.forEach((item, index) => {
    changes.push({
      id: item._id,
      index: index
    })
  })

  return changes;
};