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"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.CronJob = void 0;
const child_process_1 = require("child_process");
const errors_1 = require("./errors");
const time_1 = require("./time");
class CronJob {
constructor(cronTime, onTick, onComplete, start, timeZone, context, runOnInit, utcOffset, unrefTimeout) {
this.running = false;
this.unrefTimeout = false;
this.lastExecution = null;
this.runOnce = false;
this._callbacks = [];
this.context = (context !== null && context !== void 0 ? context : this);
if (timeZone != null && utcOffset != null) {
throw new errors_1.ExclusiveParametersError('timeZone', 'utcOffset');
}
if (timeZone != null) {
this.cronTime = new time_1.CronTime(cronTime, timeZone, null);
}
else if (utcOffset != null) {
this.cronTime = new time_1.CronTime(cronTime, null, utcOffset);
}
else {
this.cronTime = new time_1.CronTime(cronTime, timeZone, utcOffset);
}
if (unrefTimeout != null) {
this.unrefTimeout = unrefTimeout;
}
if (onComplete != null) {
this.onComplete = this._fnWrap(onComplete);
}
if (this.cronTime.realDate) {
this.runOnce = true;
}
this.addCallback(this._fnWrap(onTick));
if (runOnInit) {
this.lastExecution = new Date();
this.fireOnTick();
}
if (start)
this.start();
}
static from(params) {
if (params.timeZone != null && params.utcOffset != null) {
throw new errors_1.ExclusiveParametersError('timeZone', 'utcOffset');
}
if (params.timeZone != null) {
return new CronJob(params.cronTime, params.onTick, params.onComplete, params.start, params.timeZone, params.context, params.runOnInit, params.utcOffset, params.unrefTimeout);
}
else if (params.utcOffset != null) {
return new CronJob(params.cronTime, params.onTick, params.onComplete, params.start, null, params.context, params.runOnInit, params.utcOffset, params.unrefTimeout);
}
else {
return new CronJob(params.cronTime, params.onTick, params.onComplete, params.start, params.timeZone, params.context, params.runOnInit, params.utcOffset, params.unrefTimeout);
}
}
_fnWrap(cmd) {
var _a, _b;
switch (typeof cmd) {
case 'function': {
return cmd;
}
case 'string': {
const [command, ...args] = cmd.split(' ');
return child_process_1.spawn.bind(undefined, command !== null && command !== void 0 ? command : cmd, args, {});
}
case 'object': {
return child_process_1.spawn.bind(undefined, cmd.command, (_a = cmd.args) !== null && _a !== void 0 ? _a : [], (_b = cmd.options) !== null && _b !== void 0 ? _b : {});
}
}
}
addCallback(callback) {
if (typeof callback === 'function') {
this._callbacks.push(callback);
}
}
setTime(time) {
if (!(time instanceof time_1.CronTime)) {
throw new Error('time must be an instance of CronTime.');
}
const wasRunning = this.running;
this.stop();
this.cronTime = time;
if (wasRunning)
this.start();
}
nextDate() {
return this.cronTime.sendAt();
}
fireOnTick() {
for (const callback of this._callbacks) {
void callback.call(this.context, this.onComplete);
}
}
nextDates(i) {
return this.cronTime.sendAt(i !== null && i !== void 0 ? i : 0);
}
start() {
if (this.running) {
return;
}
const MAXDELAY = 2147483647;
let timeout = this.cronTime.getTimeout();
let remaining = 0;
let startTime;
const setCronTimeout = (t) => {
startTime = Date.now();
this._timeout = setTimeout(callbackWrapper, t);
if (this.unrefTimeout && typeof this._timeout.unref === 'function') {
this._timeout.unref();
}
};
const callbackWrapper = () => {
const diff = startTime + timeout - Date.now();
if (diff > 0) {
let newTimeout = this.cronTime.getTimeout();
if (newTimeout > diff) {
newTimeout = diff;
}
remaining += newTimeout;
}
if (remaining) {
if (remaining > MAXDELAY) {
remaining -= MAXDELAY;
timeout = MAXDELAY;
}
else {
timeout = remaining;
remaining = 0;
}
setCronTimeout(timeout);
}
else {
this.lastExecution = new Date();
this.running = false;
if (!this.runOnce) {
this.start();
}
this.fireOnTick();
}
};
if (timeout >= 0) {
this.running = true;
if (timeout > MAXDELAY) {
remaining = timeout - MAXDELAY;
timeout = MAXDELAY;
}
setCronTimeout(timeout);
}
else {
this.stop();
}
}
lastDate() {
return this.lastExecution;
}
stop() {
if (this._timeout)
clearTimeout(this._timeout);
this.running = false;
if (typeof this.onComplete === 'function') {
void this.onComplete.call(this.context);
}
}
}
exports.CronJob = CronJob;
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