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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.safeArray = function(arr) {

return Array.isArray(arr) ? arr : [];

};

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();

}

}

}

];

};

// 去除所有html标签只保留文字

exports.htmlFilter = html => {

let reg = /<\/?.+?\/?>/g;

return html.replace(reg, '') || '新项目';

};

// 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;

};