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schedule.js
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schedule.js
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/**
* Copyright (c) 2016-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*
* @flow
*/
'use strict';
var minimatch = require('minimatch');
var nodeSchedule = require('node-schedule');
var schedule: { jobs: Array<any>, work: Function, performAt: Function, parse: Function } = {
jobs: [],
work: function(time: Date, callback: Function){
var promise: Promise<void> = new Promise(function(resolve, reject: (error: any) => void){
callback(resolve, reject);
});
var job = nodeSchedule.scheduleJob(time, promise);
this.jobs.push(job);
return promise;
},
performAt: async function(time: Date, callback: Function) {
try {
await this.work(time, callback);
} catch(e) {
console.error(e)
}
},
parse: function(delayTime: string): Date {
var moment: Array<string> = [
'm', 'min', 'mins', 'minute', 'minutes',
'h', 'hour', 'hours',
'd', 'day', 'days'
];
var invalidTimeMsg: string = 'Invalid delay time setting, it should in following format:\n' +
'3m, 3 m, or 3 min\naccepted moments are: ' + moment.join(', ') + '\n instead got ' + delayTime + '\n';
if(!minimatch(delayTime, '*+(' + moment.join('|') + ')')) {
throw new Error(invalidTimeMsg);
}
var curTime: Date = new Date();
var minutes: number = curTime.getMinutes();
var hours: number = curTime.getHours();
var day: number = curTime.getDate();
var month: number = curTime.getMonth();
var year: number = curTime.getFullYear();
var parsedTime: ?Array<string> = delayTime.match(/(\d+)\s?(\w*)/);
var time: number | false = false;
if(parsedTime) {
time = parseInt(parsedTime[1]);
}
if(!parsedTime || !time){
throw new Error(invalidTimeMsg);
}
switch (parsedTime[2][0]) {
case 'm':
minutes += time;
break;
case 'h':
hours += time;
break;
case 'd':
day += time;
break;
default:
throw new Error(invalidTimeMsg);
}
return new Date(year, month, day, hours, minutes, curTime.getSeconds(), 0);
}
};
module.exports = schedule;