311 lines
12 KiB
JavaScript
311 lines
12 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.CronTime = void 0;
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const luxon_1 = require("luxon");
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const constants_1 = require("./constants");
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const errors_1 = require("./errors");
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class CronTime {
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constructor(source, timeZone, utcOffset) {
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this.realDate = false;
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this.second = {};
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this.minute = {};
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this.hour = {};
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this.dayOfMonth = {};
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this.month = {};
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this.dayOfWeek = {};
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if (timeZone != null && utcOffset != null) {
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throw new errors_1.ExclusiveParametersError('timeZone', 'utcOffset');
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}
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if (timeZone) {
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const dt = luxon_1.DateTime.fromObject({}, { zone: timeZone });
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if (!dt.isValid) {
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throw new errors_1.CronError('Invalid timezone.');
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}
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this.timeZone = timeZone;
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}
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if (utcOffset != null) {
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this.utcOffset = utcOffset;
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}
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if (timeZone == null && utcOffset == null) {
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const systemTimezone = Intl.DateTimeFormat().resolvedOptions().timeZone;
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this.timeZone = systemTimezone;
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}
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if (source instanceof Date || source instanceof luxon_1.DateTime) {
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this.source =
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source instanceof Date ? luxon_1.DateTime.fromJSDate(source) : source;
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this.realDate = true;
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}
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else {
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this.source = source;
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this._parse(this.source);
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}
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}
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static validateCronExpression(cronExpression) {
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try {
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new CronTime(cronExpression);
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return {
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valid: true
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};
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}
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catch (error) {
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return {
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valid: false,
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error
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};
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}
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}
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_getWeekDay(date) {
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return date.weekday === 7 ? 0 : date.weekday;
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}
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sendAt(i) {
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let date = this.realDate && this.source instanceof luxon_1.DateTime
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? this.source
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: luxon_1.DateTime.utc();
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if (this.timeZone) {
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date = date.setZone(this.timeZone);
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}
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if (this.utcOffset !== undefined) {
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const sign = this.utcOffset < 0 ? '-' : '+';
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const offsetHours = Math.trunc(this.utcOffset / 60);
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const offsetHoursStr = String(Math.abs(offsetHours)).padStart(2, '0');
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const offsetMins = Math.abs(this.utcOffset - offsetHours * 60);
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const offsetMinsStr = String(offsetMins).padStart(2, '0');
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const utcZone = `UTC${sign}${offsetHoursStr}:${offsetMinsStr}`;
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date = date.setZone(utcZone);
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if (!date.isValid) {
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throw new errors_1.CronError('ERROR: You specified an invalid UTC offset.');
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}
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}
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if (this.realDate) {
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if (luxon_1.DateTime.local() > date) {
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throw new errors_1.CronError('WARNING: Date in past. Will never be fired.');
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}
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return date;
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}
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if (i === undefined || isNaN(i) || i < 0) {
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const nextDate = this.getNextDateFrom(date);
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return nextDate;
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}
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else {
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const dates = [];
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for (; i > 0; i--) {
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date = this.getNextDateFrom(date);
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dates.push(date);
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}
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return dates;
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}
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}
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getTimeout() {
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return this.sendAt().toMillis() - luxon_1.DateTime.local().toMillis();
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}
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toString() {
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return this.toJSON().join(' ');
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}
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toJSON() {
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return constants_1.TIME_UNITS.map(unit => {
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return this._wcOrAll(unit);
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});
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}
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getNextDateFrom(start, timeZone) {
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var _a, _b;
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if (start instanceof Date) {
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start = luxon_1.DateTime.fromJSDate(start);
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}
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if (timeZone) {
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start = start.setZone(timeZone);
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}
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else {
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timeZone = (_a = start.zone.zoneName) !== null && _a !== void 0 ? _a : start.zone.fixed;
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}
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let date = luxon_1.DateTime.fromFormat(`${start.year}-${start.month}-${start.day} ${start.hour}:${start.minute}:${start.second}`, 'yyyy-M-d H:m:s', {
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zone: 'UTC'
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});
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const firstDate = date.toMillis();
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if (!this.realDate) {
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if (date.millisecond > 0) {
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date = date.set({ millisecond: 0, second: date.second + 1 });
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}
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}
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if (!date.isValid) {
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throw new errors_1.CronError('ERROR: You specified an invalid date.');
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}
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const maxMatch = luxon_1.DateTime.now().plus({ years: 8 });
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while (true) {
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if (date > maxMatch) {
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throw new errors_1.CronError(`Something went wrong. No execution date was found in the next 8 years.
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Please provide the following string if you would like to help debug:
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Time Zone: ${(_b = timeZone === null || timeZone === void 0 ? void 0 : timeZone.toString()) !== null && _b !== void 0 ? _b : '""'} - Cron String: ${this.source.toString()} - UTC offset: ${date.offset} - current Date: ${luxon_1.DateTime.local().toString()}`);
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}
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if (!(date.month in this.month) &&
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Object.keys(this.month).length !== 12) {
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date = date.plus({ month: 1 });
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date = date.set({ day: 1, hour: 0, minute: 0, second: 0 });
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continue;
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}
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if ((!(date.day in this.dayOfMonth) &&
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Object.keys(this.dayOfMonth).length !== 31 &&
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!(this._getWeekDay(date) in this.dayOfWeek &&
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Object.keys(this.dayOfWeek).length !== 7)) ||
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(!(this._getWeekDay(date) in this.dayOfWeek) &&
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Object.keys(this.dayOfWeek).length !== 7 &&
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!(date.day in this.dayOfMonth &&
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Object.keys(this.dayOfMonth).length !== 31))) {
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date = date.plus({ days: 1 });
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date = date.set({ hour: 0, minute: 0, second: 0 });
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continue;
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}
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if (!(date.hour in this.hour) && Object.keys(this.hour).length !== 24) {
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date = date.plus({ hour: 1 });
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date = date.set({ minute: 0, second: 0 });
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continue;
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}
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if (!(date.minute in this.minute) &&
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Object.keys(this.minute).length !== 60) {
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date = date.plus({ minute: 1 });
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date = date.set({ second: 0 });
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continue;
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}
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if (date.toMillis() === firstDate ||
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(!(date.second in this.second) &&
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Object.keys(this.second).length !== 60)) {
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date = date.plus({ second: 1 });
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continue;
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}
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break;
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}
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const expectedHour = date.hour;
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const expectedMinute = date.minute;
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date = luxon_1.DateTime.fromFormat(`${date.year}-${date.month}-${date.day} ${date.hour}:${date.minute}:${date.second}`, 'yyyy-M-d H:m:s', {
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zone: timeZone
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});
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const nonDSTReferenceDate = luxon_1.DateTime.fromFormat(`${date.year}-1-1 0:0:0`, 'yyyy-M-d H:m:s', { zone: timeZone });
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if ((expectedHour !== date.hour || expectedMinute !== date.minute) &&
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nonDSTReferenceDate.offset !== date.offset) {
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while (date.minus({ minute: 1 }).offset !== nonDSTReferenceDate.offset) {
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date = date.minus({ minute: 1 });
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}
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return date;
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}
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const hourTestDate = date.minus({ hour: 1 });
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const twoHourTestDate = date.minus({ hour: 2 });
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if ((hourTestDate.hour === date.hour ||
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twoHourTestDate.hour === hourTestDate.hour) &&
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hourTestDate > start) {
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date = hourTestDate;
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}
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const halfHourTestDate = date.minus({ minute: 30 });
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if ((halfHourTestDate.minute === date.minute ||
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hourTestDate.minute === halfHourTestDate.minute) &&
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halfHourTestDate > start) {
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date = halfHourTestDate;
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}
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return date;
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}
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_wcOrAll(unit) {
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if (this._hasAll(unit)) {
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return '*';
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}
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const all = [];
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for (const time in this[unit]) {
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all.push(time);
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}
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return all.join(',');
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}
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_hasAll(unit) {
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const constraints = constants_1.CONSTRAINTS[unit];
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const low = constraints[0];
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const high = unit === constants_1.TIME_UNITS_MAP.DAY_OF_WEEK ? constraints[1] - 1 : constraints[1];
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for (let i = low, n = high; i < n; i++) {
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if (!(i in this[unit])) {
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return false;
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}
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}
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return true;
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}
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_parse(source) {
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var _a;
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source = source.toLowerCase();
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if (Object.keys(constants_1.PRESETS).includes(source)) {
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source = constants_1.PRESETS[source];
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}
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source = source.replace(/[a-z]{1,3}/gi, (alias) => {
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if (Object.keys(constants_1.ALIASES).includes(alias)) {
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return constants_1.ALIASES[alias].toString();
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}
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throw new errors_1.CronError(`Unknown alias: ${alias}`);
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});
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const units = source.trim().split(/\s+/);
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if (units.length < constants_1.TIME_UNITS_LEN - 1) {
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throw new errors_1.CronError('Too few fields');
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}
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if (units.length > constants_1.TIME_UNITS_LEN) {
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throw new errors_1.CronError('Too many fields');
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}
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const unitsLen = units.length;
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for (const unit of constants_1.TIME_UNITS) {
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const i = constants_1.TIME_UNITS.indexOf(unit);
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const cur = (_a = units[i - (constants_1.TIME_UNITS_LEN - unitsLen)]) !== null && _a !== void 0 ? _a : constants_1.PARSE_DEFAULTS[unit];
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this._parseField(cur, unit);
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}
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}
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_parseField(value, unit) {
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const typeObj = this[unit];
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let pointer;
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const constraints = constants_1.CONSTRAINTS[unit];
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const low = constraints[0];
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const high = constraints[1];
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const fields = value.split(',');
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fields.forEach(field => {
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const wildcardIndex = field.indexOf('*');
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if (wildcardIndex !== -1 && wildcardIndex !== 0) {
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throw new errors_1.CronError(`Field (${field}) has an invalid wildcard expression`);
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}
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});
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value = value.replace(constants_1.RE_WILDCARDS, `${low}-${high}`);
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const allRanges = value.split(',');
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for (const range of allRanges) {
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const match = [...range.matchAll(constants_1.RE_RANGE)][0];
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if ((match === null || match === void 0 ? void 0 : match[1]) !== undefined) {
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const [, mLower, mUpper, mStep] = match;
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let lower = parseInt(mLower, 10);
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let upper = mUpper !== undefined ? parseInt(mUpper, 10) : undefined;
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const wasStepDefined = mStep !== undefined;
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const step = parseInt(mStep !== null && mStep !== void 0 ? mStep : '1', 10);
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if (step === 0) {
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throw new errors_1.CronError(`Field (${unit}) has a step of zero`);
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}
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if (upper !== undefined && lower > upper) {
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throw new errors_1.CronError(`Field (${unit}) has an invalid range`);
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}
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const isOutOfRange = lower < low ||
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(upper !== undefined && upper > high) ||
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(upper === undefined && lower > high);
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if (isOutOfRange) {
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throw new errors_1.CronError(`Field value (${value}) is out of range`);
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}
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lower = Math.min(Math.max(low, ~~Math.abs(lower)), high);
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if (upper !== undefined) {
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upper = Math.min(high, ~~Math.abs(upper));
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}
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else {
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upper = wasStepDefined ? high : lower;
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}
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pointer = lower;
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do {
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typeObj[pointer] = true;
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pointer += step;
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} while (pointer <= upper);
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if (unit === 'dayOfWeek') {
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if (!typeObj[0] && !!typeObj[7])
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typeObj[0] = typeObj[7];
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delete typeObj[7];
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}
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}
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else {
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throw new errors_1.CronError(`Field (${unit}) cannot be parsed`);
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}
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}
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}
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}
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exports.CronTime = CronTime;
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