eme-flow/src/util/toolkit.js

eme flow组件

/**
 * Created by cc on 16/8/12.
 */

'use strict';
import code from '../resource/error-code';
import crypto from 'crypto';

export default  {
    P: function (fn, target) {
        return (...args) => {
            return new Promise((resolve, reject) => {
                args.push((err, ...data) => {
                    if (err === null || err === undefined) return resolve.apply(this, data);
                    return reject(err);
                });
                fn.apply(target, args);
            });
        };
    },
    mix: function (a, b) {
        Object.keys(b).forEach(key => a[key] = b[key])
    },
    error: function (ecode) {
        return {
            isFlow : true,
            state: ecode,
            status: ecode,
            error: code[ecode].statusMessage,
            message: code[ecode].statusMessage,
            statusMessage: code[ecode].statusMessage
        }
    },
    guid: function (time) {
        var result = "";
        time || (time = 1);
        for (var i = 0; i < time; i++) {
            result += (function () {
                var c = new Date(),
                    b = c.getSeconds() + "",
                    d = c.getMinutes() + "",
                    e = c.getMilliseconds() + "";
                for (var i = b.length, j = 2; i < j; i++) {
                    b = "0" + b;
                }
                for (var i = d.length, j = 2; i < j; i++) {
                    d = "0" + d;
                }
                for (var i = e.length, j = 3; i < j; i++) {
                    e = "0" + e;
                }
                return b + d + e + (((1 + Math.random()) * 0x10000) | 0).toString(16).substring(1) + (((1 + Math.random()) * 0x10000) | 0).toString(16);
            })();
        }
        return result.toUpperCase();
    },
    username: function (user) {
        if (user.companyname) {
            return `${user.realname || user.nickname || user.username || user.phone}(${user.companyname})`;
        } else {
            return user.realname || user.nickname || user.username || user.phone;
        }
    },
    //str保存为文件时，文件的MD5签名
    md5: async function (str) {
        let fsHash = crypto.createHash('md5');
        fsHash.update(Buffer.from(str));
        return fsHash.digest('hex');
    }
};

module.exports = exports.default;