Skip to content

Instantly share code, notes, and snippets.

@Rovack
Last active July 29, 2025 17:10
Show Gist options
  • Save Rovack/51e0fb558ee0fa4ce0e2cd5f0ab17cb1 to your computer and use it in GitHub Desktop.
Save Rovack/51e0fb558ee0fa4ce0e2cd5f0ab17cb1 to your computer and use it in GitHub Desktop.
A simple script that waits for tickets to become available for the Harry Potter Studio Tour in London, and grabs them
// Note that this has some limitations, such as looking specifically for adult tickets,
// looking for the given days only in the nearest month that has availability,
// and always choosing the earliest time if several are found within the desired dates.
function setAdultTickets(adultTicketsWanted) {
const adultTicketsCount = parseInt($('.quantity-control.row > input')[0].value, 10);
const ticketChangeIterations = Math.abs(adultTicketsWanted - adultTicketsCount);
const ticketChangeButton = $(`.quantity-control.row > button.typcn-${adultTicketsCount < adultTicketsWanted ? 'plus' : 'minus'}`)[0];
for (let i = 0; i < ticketChangeIterations; i++) {
ticketChangeButton.click();
}
}
function playSound(src) {
return new Promise((resolve) => {
const audio = new Audio(src);
audio.onended = resolve;
audio.play();
});
}
function repeatHeyListen() {
playSound('https://www.myinstants.com/media/sounds/hey_listen.mp3')
.then(repeatHeyListen);
}
function waitForAvailability() {
return new Promise((resolve) => {
setTimeout(() => {
const availableEls = $('.calendar>.row:not(.blankLoader) .calendar-body .day.available'), isLoading = $('.calendar-modal[data-component=eventTimeModal] .modal-content > .loading-mask.hide').length === 0;
if (isLoading) {
return waitForAvailability()
.then((res) => resolve(res));
}
resolve(availableEls);
}, 1000);
});
}
function playSounds() {
playSound('https://www.myinstants.com/media/sounds/mlg-airhorn.mp3')
.then(() => playSound('https://www.myinstants.com/media/sounds/sound-9______.mp3'))
.then(() => playSound('https://www.myinstants.com/media/sounds/ps_1.mp3'))
.then(() => playSound('https://www.myinstants.com/media/sounds/wrong-answer-sound-effect.mp3'))
.then(() => playSound('https://www.myinstants.com/media/sounds/lalalalala.swf.mp3'))
.then(() => playSound('https://www.myinstants.com/media/sounds/tuturu_1.mp3'))
.then(() => playSound('https://www.myinstants.com/media/sounds/hallelujahshort.swf.mp3'))
.then(repeatHeyListen);
}
function addTicketsToBasket(dayElement) {
dayElement.click();
setTimeout(() => waitForAvailability()
.then(() => {
$('.ui-control.button.select-time')[0].click();
setTimeout(() => {
$('.typcn.typcn-shopping-cart.ng-binding')[0].click();
}, 2000);
}), 2000);
}
function checkForTickets(datesWanted=[6, 7, 8], adultTicketsWanted=2, checkFrequency=15) {
setAdultTickets(adultTicketsWanted);
function check() {
$('.shared-calendar-button').click();
waitForAvailability()
.then(availableEls => {
console.log(new Date(), 'Availability loaded. Checking for relevant dates...');
for (let i = 0; i < availableEls.length; i++) {
const day = parseInt(availableEls[i].innerText, 10);
console.log('Day', day, 'is available...');
if (datesWanted.includes(day)) {
console.log('Found tickets!!!!!');
playSounds();
addTicketsToBasket(availableEls[i]);
return;
}
}
console.log(`Relevant dates not yet available. Will check again in ${checkFrequency} seconds.`);
$('#page > div:nth-child(11) > div.modal.info-modal.w-auto-c > div > div.close').click();
setTimeout(check, checkFrequency * 1000);
});
};
check();
}
@weqo
Copy link

weqo commented Nov 1, 2019

I'm currently looking to check December and there are available tickets in November. I added your edits from the Sept 7th post but noticed that it seems to be skipping the check. While troubleshooting, I noticed that parseInt($('[name="ctl00$ContentPlaceHolder$SalesChannelDetailControl$EventsDateTimeSelectorModal$EventsDateTimeSelector$CalendarSelector$MonthDropDownList"]')[0].value, 10) returns NaN.

I do notice, however, that when I enter $('[name="ctl00$ContentPlaceHolder$SalesChannelDetailControl$EventsDateTimeSelectorModal$EventsDateTimeSelector$CalendarSelector$MonthDropDownList"]')[0].value it does return string:11 for November.

After some google-fu I've modified the section (basically, perform a regex replace on the CTl100 month value so that it returns a string, and then match that string) so that month would match for November:

	waitForAvailability()
        .then(initialEls => {
				const monthvalue = $('[name="ctl00$ContentPlaceHolder$SalesChannelDetailControl$EventsDateTimeSelectorModal$EventsDateTimeSelector$CalendarSelector$MonthDropDownList"]')[0].value;
                const month = monthvalue.replace(/^\D+/g, "");
				if (month === '11') {
					console.log('Month too early - skipping to next month');
					$('[name="ctl00$ContentPlaceHolder$SalesChannelDetailControl$EventsDateTimeSelectorModal$EventsDateTimeSelector$CalendarSelector$NextMonthImageButton"]').click();
					return waitForAvailability();
				} else {
					return Promise.resolve(initialEls);
				}

However, the script just seems to stop after logging "Month too early - skipping to next month" and doesn't continue on with the check. Any suggestions?

@Rovack
Copy link
Author

Rovack commented Nov 2, 2019

Ah, you're absolutely right. Looks like they changed the value structure from just the month number to "string:" followed by the number.
Your solution should definitely work. For simplicity, an alternative solution would be avoiding integer parsing and and regexes altogether, and just getting the name of the selected month, which is what's actually displayed (and therefore somewhat less likely to change in the future):

const month = $('[name="ctl00$ContentPlaceHolder$SalesChannelDetailControl$EventsDateTimeSelectorModal$EventsDateTimeSelector$CalendarSelector$MonthDropDownList"] > [selected="selected"]')[0].innerText;
if (month === 'November') {

Anyway, both this and your regex should be valid solutions, and neither is the cause for the script hanging, as you described and I also just verified.
The actual culprit for that one is a rare case that I hadn't handled: a month without a single day of availability (as is currently the case for December). Due to the way the script checks if the calendar has finished loading, failing to find a single day that's available will make it just keep waiting indefinitely.

Fortunately, there's a very simple solution for this, that requires nothing but removing code! Simply change the check in line 32 from:

if (availableEls.length === 0 || isLoading) {

to just:

if (isLoading) {

Honestly I'm not even sure why the availableEls.length check existed in the first place. I think it might just be historical reasons (isLoading was only added in a later version of the script IIRC).
I'll update this in the main snippet too, so in the future this edge case won't bother anyone else.

Thanks for pointing out these issues, and for taking the initiative to debug them on your own and share your solutions, @weqo!
Hope with this additional fix, the script works for you and you get the tickets you've been looking for. If you run into any other issues, of course do let me know. :)

P.S.: I've updated the original month-skipping comment to include your corrected version. Thanks again!

@ReignOfComputer
Copy link

Hey, thanks so much for this. Can I just confirm that if I'm looking across months, I can just add the dates in the array consecutively? For example, if I'm looking for 27-31 December + 1 January, would the function be checkForTickets([27, 28, 29, 30, 31, 1], 2, 300)?

@Rovack
Copy link
Author

Rovack commented Dec 2, 2019

@ReignOfComputer Sort of. If you enter those values, the script will search until it finds tickets on one of those days, in whichever month has the nearest available tickets.
So, as long as December has any tickets left, it'll keep waiting until one of the given days opens up in December. Even if January 1st actually does become available, the script won't detect this.
Conversely, if tickets for December run out entirely, such that the nearest availability is in January, the script might pick up tickets for e.g. January 27th.

In general, to specify which month you want, you could use one of the modifications mentioned in the comments above.
Specifically, you could make the change suggested on Sep 7 if you wanted to skip ahead of December to see if January 1st is available.
Or, the change suggested on Aug 14 if you only want to accept results in December so as to exclude results like January 27th.
However, actually making the script work with both months, associating different days for each, would not be quite so easy.

Fortunately, there is a simple solution you could try, that doesn't require any new code: Just open the site in 2 different tabs at the same time, and run the December search in one and January in the other.
The December tab would have the script version with the Aug 14 change, and you'd pass [27, 28, 29, 30, 31] to checkForTickets there, whereas the January tab would have the version with the Sep 7 change, and for that one you'd just pass [1].
This workaround is a bit cumbersome to be sure, but should work.

Let me know if any part of this is unclear, or if there's any other questions or issues.

Good luck!

@ReignOfComputer
Copy link

You're amazing, thanks again!

@mihaela2020
Copy link

mihaela2020 commented Jan 23, 2020

Hy!

Please help me!
We are a family (2+2) and still an adult and a child.
We want to get to the WB studios between 13 -16 February.

I tried as you wrote on Oct 15 but I get the message
"Availability loaded. Checking for relevant dates ..."
VM239: 77 Wrong month. Will check again in 15 seconds.

What should I do?
Thanks!!!!

@Rovack
Copy link
Author

Rovack commented Jan 24, 2020

Hi @mihaela2020. That could be because a couple months ago the site made a certain change, that required a slight tweak to the Oct 15 code for finding tickets in a specific month. I've now added an Edit at the bottom of the Oct 15 comment, with what should be a fixed version of the code.

Once you use the updated fix (and assuming you put the number '2' in the check instead of '10', since you want February), that message should only appear when there really isn't any availability earlier than March.
Of course, in that case, if the message does appear and you see that the month being shown in the pop-up is indeed later than February, that's perfectly fine: as the message says, it'll just try again in 15 seconds, and will keep trying until it finds availability on the given dates in February.

The only remaining issue would be the case where January still has availability, in which case February won't even be checked.
I'm planning on adding a new version of the script that will handle that case as well, but right now the site is so incredibly slow for me that I can't really test any changes. Hopefully I'll be able to get it working shortly.

Anyway, let me know if this works, or if there's any more questions/issues/clarifications/anything I can help with. And good luck!

@mihaela2020
Copy link

mihaela2020 commented Jan 24, 2020 via email

@Rovack
Copy link
Author

Rovack commented Jan 24, 2020

Well, the site is still very slow for me, so I can't fully test the new version, but I have tried it once or twice and it seemed to work well enough.
So, perhaps you'd like to give it a shot, even though it's still experimental at this point and could definitely have issues.

If so, just copy the code below (instead of the original script at the top of this page), and then run:
checkForTicketsInMonth([13, 14, 15, 16], 2).

(Of course, don't forget to also add the // mentioned in Oct 15th and manually select the ticket amounts before running the script, since you want both adult and child tickets.)

The code is as follows:

function setAdultTickets(adultTicketsWanted) {
	const adultTicketsCount = parseInt($('.quantity-control.row > input')[0].value, 10);
	const ticketChangeIterations = Math.abs(adultTicketsWanted - adultTicketsCount);
	const ticketChangeButton = $(`.quantity-control.row > button.typcn-${adultTicketsCount < adultTicketsWanted ? 'plus' : 'minus'}`)[0];

	for (let i = 0; i < ticketChangeIterations; i++) {
		ticketChangeButton.click();
	}
}

function playSound(src) {
	return new Promise((resolve) => {
		const audio = new Audio(src);
		audio.onended = resolve;
		audio.play();
	});
}

function repeatHeyListen() {
	playSound('https://www.myinstants.com/media/sounds/hey_listen.mp3')
		.then(repeatHeyListen);
}

function waitForAvailability(monthWanted) {
	return new Promise((resolve) => {
		setTimeout(() => {
			const availableEls = $('.calendar>.row:not(.blankLoader) .calendar-body .day.available'), isLoading = $('.calendar-modal[data-component=eventTimeModal] .modal-content > .loading-mask.hide').length === 0;
			if (isLoading) {
				return waitForAvailability(monthWanted)
					.then((res) => resolve(res));
			}

			if (monthWanted == null) {
				resolve({ availableEls });
				return;
			}

			const monthValue = $('[name="ctl00$ContentPlaceHolder$SalesChannelDetailControl$EventsDateTimeSelectorModal$EventsDateTimeSelector$CalendarSelector$MonthDropDownList"]')[0].value;
			const month = parseInt(monthValue.replace(/^\D+/g, ''), 10);

			if (month < monthWanted) {
				console.log(`Month too early (${month}) - skipping to next month.`);
				$('[name="ctl00$ContentPlaceHolder$SalesChannelDetailControl$EventsDateTimeSelectorModal$EventsDateTimeSelector$CalendarSelector$NextMonthImageButton"]').click();
				return waitForAvailability(monthWanted).then(res => resolve(res));
			}

			resolve({ availableEls, month });
		}, 1000);
	});
}

function playSounds() {
	playSound('https://www.myinstants.com/media/sounds/mlg-airhorn.mp3')
		.then(() => playSound('https://www.myinstants.com/media/sounds/sound-9______.mp3'))
		.then(() => playSound('https://www.myinstants.com/media/sounds/ps_1.mp3'))
		.then(() => playSound('https://www.myinstants.com/media/sounds/wrong-answer-sound-effect.mp3'))
		.then(() => playSound('https://www.myinstants.com/media/sounds/lalalalala.swf.mp3'))
		.then(() => playSound('https://www.myinstants.com/media/sounds/tuturu_1.mp3'))
		.then(() => playSound('https://www.myinstants.com/media/sounds/hallelujahshort.swf.mp3'))
		.then(repeatHeyListen);
}

function addTicketsToBasket(dayElement) {
	dayElement.click();

	setTimeout(() => waitForAvailability()
		.then(() => {
			$('.ui-control.button.select-time')[0].click();

			setTimeout(() => {
				$('.typcn.typcn-shopping-cart.ng-binding')[0].click();
			}, 2000);
		}), 2000);
}

function checkForTickets(datesWanted=[6, 7, 8], adultTicketsWanted=2, checkFrequency=15, monthWanted) {
	setAdultTickets(adultTicketsWanted);

	function check() {
		$('.shared-calendar-button').click();

		waitForAvailability(monthWanted)
			.then(({ availableEls, month }) => {
				console.log(new Date(), `Availability loaded${month != null ? ` for month ${month}` : ''}. Checking for relevant dates...`);

				if (monthWanted != null && month > monthWanted) {
					console.log(`Month is too late (${month}). Will check again in ${checkFrequency} seconds.`);
					setTimeout(check, checkFrequency * 1000);
					return;
				}

				for (let i = 0; i < availableEls.length; i++) {
					const day = parseInt(availableEls[i].innerText, 10);
					console.log('Day', day, 'is available...');
					if (datesWanted.includes(day)) {
						console.log('Found tickets!!!!!');
						playSounds();
						addTicketsToBasket(availableEls[i]);
						return;
					}
				}

				console.log(`Relevant dates not yet available. Will check again in ${checkFrequency} seconds.`);
				$('#page > div:nth-child(11) > div.modal.info-modal.w-auto-c > div > div.close').click();
				setTimeout(check, checkFrequency * 1000);
		});
	};
	check();
}

function checkForTicketsInMonth(datesWanted, monthWanted, adultTicketsWanted, checkFrequency) {
	return checkForTickets(datesWanted, adultTicketsWanted, checkFrequency, monthWanted);
}

@Rovack
Copy link
Author

Rovack commented Jan 24, 2020

Ah, just saw your reply @mihaela2020. To answer your question: Yes, using a month that you know does have availability is the best way to test, just as you said.
Using the new version of the script, that would mean running e.g.: checkForTicketsInMonth([13, 14, 15, 16], 3), instead of checkForTicketsInMonth([13, 14, 15, 16], 2), just to test.

Also, note that I've updated my earlier comment a bit, and also added a new one with a version of the script that should handle more cases, even though it isn't as well-tested as the original version (just forgot to tag you on that one).

Finally, looking at the site right now, it seems Feb 14-16 all have availability, so you might be able to just manually book the tickets you want. That is, if you go in right now, the script might not even be necessary. :)

(Edit: I find it interesting that the site was extremely slow for me for the last hour or so, then 5-10 minutes ago a ton of availability opened up in January and February, then it seems that availability disappeared in just a couple of minutes, and now the site is more or less back to its normal speed. I wonder if some process involving availability was going on that was slowing down the site... if so, that would suggest it's worth keeping an eye on the site around 8-9 AM GMT, which does match advice I've seen mentioned on TripAdvisor before.)

@mihaela2020
Copy link

mihaela2020 commented Jan 24, 2020 via email

@Rovack
Copy link
Author

Rovack commented Jan 24, 2020

Great, glad to hear the script works @mihaela2020. :)

Just note that if tickets open up for January and February at the same time, as was the case this morning, the original version probably won't work (it only knows how to keep waiting when availability is too late, but doesn't handle availability that's too early, meaning it could keep looking at Jan instead of Feb).
For that, the new version is preferable, since it also knows to go to the next month (if you want, you could test that by looking for tickets in April, e.g. checkForTicketsInMonth([13, 14, 15, 16], 4)).

@mihaela2020
Copy link

I have a problem with the new version:
Although I'm interested in February and at the end I run checkForTicketsInMonth ([13, ​​14, 15, 16], 2)
it puts in my basket tickets for March.
It doesn't wait for February availability.

@Rovack
Copy link
Author

Rovack commented Jan 24, 2020

You're absolutely right, @mihaela2020. I just updated the code in the comment with a fix.

And, now that the site is back to full speed, I was able to test all cases: a month that's too late, too early, and just right.
All seem to work now, as far as I can tell.

@mihaela2020
Copy link

Hello again!
Your method works very well. Thanks!
I have family tickets in my basket but I don't know for what date or time.
Do you know how I can find out?

@Rovack
Copy link
Author

Rovack commented Jan 25, 2020

Oh wow, that's a very good question @mihaela2020. Personally I've never tried getting Family tickets, so I never even realized they don't show the dates in the basket. For Adult or Child tickets, it shows up in the basket as e.g. "Adult- 03/03/2020 10:00" or "Child- 03/03/2020 15:00".
Really weird choice for the website design...

It's likely that if the script was given the right parameters, and automatically put tickets into the basket, the tickets will be somewhere in the specified range. Even with the new version, that's not as well-tested, I'd say I have 80% confidence in that.
So, one strategy would be to just buy the tickets, and if it then turns out that they were somehow wrong, cancel them. According to their Terms and Conditions, you should be able to cancel by phone within 7 days of purchasing, if you're a resident of the EU.
If you're not, I have no idea how amenable they are to refunding tickets.

If that's not an option, it might be possible to make some modifications to the script to make it store somewhere which dates it selected, though off the top of my head I'm not sure what would be the best way to do that. The problem is that when the page changes as part of going to the basket, the log of messages is unfortunately cleared. So, it'd require some actual storage option...

Actually, one very simple solution would be just removing the part that automatically adds the tickets to the basket. If you're relatively near the computer for enough of the time, you could rely on the loud sounds to alert you once tickets become available, and then come put them in the basket yourself.

For that, I believe all you'd need to do is change the line that's currently:

						addTicketsToBasket(availableEls[i]);

into:

						// addTicketsToBasket(availableEls[i]);

Anyway, any option that requires modifications to the script would of course require disposing of the tickets you currently have, and running the script again. Not the end of the world, since there's still enough time ahead of your visit that it would likely find new tickets in a day or 2, but still somewhat of a risk.

@mihaela2020
Copy link

I searched in the "View Page Source" of the basket for 2020 and found the date and time 14/02/2020 11:00.
👍

@Rovack
Copy link
Author

Rovack commented Jan 25, 2020

Ah, of course! Excellent idea. :)
For future reference, in case anyone else encounters this issue, you should be able to see the date and time by typing the following in the Console:

$('[ng-if="packageItem.packageEventDate"] > .selected-date')[0].innerHTML

So glad to hear you got tickets @mihaela2020. Have a great time!

P.S. I've now also updated the Caveats in the top comment to reflect this problem and your solution, so others may benefit from your experience. :)

@Rovack
Copy link
Author

Rovack commented Feb 5, 2020

So happy to hear that, @Capybara218!
Thanks for letting me know, and I hope you and your SO have an amazing time there! :)

@Flame239
Copy link

Flame239 commented Feb 19, 2023

Nowadays after some time you get a notification about expiring session and have to click Extend session button.
Here is updated script - at the beginning of check() method we click extend session button if its available, like so:

if ($('.ui-control.button.extendSession').length != 0) {
	console.log('Extending session');
	$('.ui-control.button.extendSession').click();
}	

Full script:

function setAdultTickets(adultTicketsWanted) {
	const adultTicketsCount = parseInt($('.quantity-control.row > input')[0].value, 10);
	const ticketChangeIterations = Math.abs(adultTicketsWanted - adultTicketsCount);
	const ticketChangeButton = $(`.quantity-control.row > button.typcn-${adultTicketsCount < adultTicketsWanted ? 'plus' : 'minus'}`)[0];

	for (let i = 0; i < ticketChangeIterations; i++) {
		ticketChangeButton.click();
	}
}

function playSound(src) {
	return new Promise((resolve) => {
		const audio = new Audio(src);
		audio.onended = resolve;
		audio.play();
	});
}

function repeatHeyListen() {
	playSound('https://www.myinstants.com/media/sounds/hey_listen.mp3')
		.then(repeatHeyListen);
}

function waitForAvailability(monthWanted) {
	return new Promise((resolve) => {
		setTimeout(() => {
			const availableEls = $('.c-14-all.available'), isLoading = $('.calendar-modal[data-component=eventTimeModal] .modal-content > .loading-container.hide').length === 0;
			if (isLoading) {
				return waitForAvailability(monthWanted)
					.then((res) => resolve(res));
			}

			if (monthWanted == null) {
				resolve({ availableEls });
			}

			const monthValue = $('[name="ctl00$ContentPlaceHolder$SalesChannelDetailControl$EventsDateTimeSelectorModal$EventsDateTimeSelector$CalendarSelector$MonthDropDownList"]')[0].value;
			const month = parseInt(monthValue.replace(/^\D+/g, ''), 10);

			if (month < monthWanted) {
				console.log(`Month too early (${month}) - skipping to next month.`);
				$('[name="ctl00$ContentPlaceHolder$SalesChannelDetailControl$EventsDateTimeSelectorModal$EventsDateTimeSelector$CalendarSelector$NextMonthImageButton"]').click();
				return waitForAvailability(monthWanted).then(res => resolve(res));
			}

			resolve({ availableEls, month });
		}, 1000);
	});
}

function playSounds() {
	playSound('https://www.myinstants.com/media/sounds/mlg-airhorn.mp3')
		.then(() => playSound('https://www.myinstants.com/media/sounds/sound-9______.mp3'))
		.then(() => playSound('https://www.myinstants.com/media/sounds/ps_1.mp3'))
		.then(() => playSound('https://www.myinstants.com/media/sounds/wrong-answer-sound-effect.mp3'))
		.then(() => playSound('https://www.myinstants.com/media/sounds/lalalalala.swf.mp3'))
		.then(() => playSound('https://www.myinstants.com/media/sounds/tuturu_1.mp3'))
		.then(() => playSound('https://www.myinstants.com/media/sounds/hallelujahshort.swf.mp3'))
		.then(repeatHeyListen);
}

function addTicketsToBasket(dayElement) {
	dayElement.click();

	setTimeout(() => waitForAvailability()
		.then(() => {
			$('.ui-control.button.select-time')[0].click();

			setTimeout(() => {
				$('.typcn.typcn-shopping-cart.ng-binding')[0].click();
			}, 2000);
		}), 2000);
}

function checkForTickets(datesWanted=[6, 7, 8], adultTicketsWanted=2, checkFrequency=15, monthWanted) {
	setAdultTickets(adultTicketsWanted);

	function check() {
		if ($('.ui-control.button.extendSession').length != 0) {
			console.log('Extending session');
			$('.ui-control.button.extendSession').click();
		}
		
		$('.shared-calendar-button').click();

		waitForAvailability(monthWanted)
			.then(({ availableEls, month }) => {
				console.log(new Date(), `Availability loaded${month != null ? ` for month ${month}` : ''}. Checking for relevant dates...`);

				if (monthWanted != null && month > monthWanted) {
					console.log(`Month is too late (${month}). Will check again in ${checkFrequency} seconds.`);
					setTimeout(check, checkFrequency * 1000);
					return;
				}

				for (let i = 0; i < availableEls.length; i++) {
					const day = parseInt(availableEls[i].innerText, 10);
					console.log('Day', day, 'is available...');
					if (datesWanted.includes(day)) {
						console.log('Found tickets!!!!!');
						playSounds();
						addTicketsToBasket(availableEls[i]);
						return;
					}
				}

				console.log(`Relevant dates not yet available. Will check again in ${checkFrequency} seconds.`);
				setTimeout(check, checkFrequency * 1000);
		});
	};
	check();
}

function checkForTicketsInMonth(datesWanted, monthWanted, adultTicketsWanted, checkFrequency) {
	return checkForTickets(datesWanted, adultTicketsWanted, checkFrequency, monthWanted);
}

@Rovack
Copy link
Author

Rovack commented Feb 20, 2023

Oh that's great to know, thanks for the fix @Flame239! Added it to the instructions.

@Silverleaf42
Copy link

Silverleaf42 commented Feb 21, 2023

The script is really cool. Nice work on it, @Rovack . I have been running it for a day now and this morning for the first time, it found a hit on one of my days, but with "Insufficient Quantities" of tickets available. When that happens there's no way to stop the mp3 from playing even though it can't add the available time to the basket. Since I'm looking for the "Family (2 adults + 2 children)" and 1 extra Child ticket, I commented out "setAdultTickets(adultTicketsWanted);" and selected my quantities manually from the site. Is there a way I could change the script to look specifically for what I need so it wouldn't celebrate unless all my needed tickets were found?
220341603-ae90d96c-1846-4f62-86a7-a4f387bfb9ff

@Rovack
Copy link
Author

Rovack commented Feb 25, 2023

Hey @Silverleaf42, really sorry for the late response. Have you gotten it to work yet?

If not (though I hope you have), I must admit it's my first time hearing about this "Insufficient Quantities" case. I'd have thought if you specify multiple types of tickets, the site would only show you times where they're all available at once. I guess for some reason, in certain cases they prefer to show dates/times that aren't really available.

To address this in the script would take a few changes, to both addTicketsToBasket and check. Here's a version that seems to work:

[...]

async function addTicketsToBasket(dayElement) {
	dayElement.click();

	await new Promise((resolve) => setTimeout(resolve, 2000));
	await waitForAvailability();

	const chooseTimeButton = $('.ui-control.button.select-time:not(.disabled)')[0];
	if (!chooseTimeButton) return false;

	console.log('Found tickets!!!!!');
	playSounds();

	chooseTimeButton.click();

	await new Promise((resolve) => setTimeout(resolve, 2000));

	$('.typcn.typcn-shopping-cart.ng-binding')[0].click();
	return true;
}

function checkForTickets(datesWanted=[6, 7, 8], adultTicketsWanted=2, checkFrequency=15, monthWanted) {
	setAdultTickets(adultTicketsWanted);

	async function check() {
		if ($('.ui-control.button.extendSession').length != 0) {
			console.log('Extending session');
			$('.ui-control.button.extendSession').click();
		}
		
		$('.shared-calendar-button').click();

		waitForAvailability(monthWanted)
			.then(async ({ availableEls, month }) => {
				console.log(new Date(), `Availability loaded${month != null ? ` for month ${month}` : ''}. Checking for relevant dates...`);

				if (monthWanted != null && month > monthWanted) {
					console.log(`Month is too late (${month}). Will check again in ${checkFrequency} seconds.`);
					setTimeout(check, checkFrequency * 1000);
					return;
				}

				for (let i = 0; i < availableEls.length; i++) {
					const day = parseInt($('.calendar>.row:not(.blankLoader) .calendar-body .day.available')[i].innerText, 10);
					console.log('Day', day, 'is available...');
					if (datesWanted.includes(day)) {
						const succeeded = await addTicketsToBasket($('.calendar>.row:not(.blankLoader) .calendar-body .day.available')[i]);
						if (succeeded) return;
					}
				}

				console.log(`Relevant dates not yet available. Will check again in ${checkFrequency} seconds.`);
				setTimeout(check, checkFrequency * 1000);
		});
	};
	check();
}

[...]

(There may be a very slight race condition here, where if there are multiple relevant dates but the first turn(s) out to have insufficient quantity, in theory availability could change before we attempt the next date and the script wouldn't necessarily handle that. But I think it's fairly unlikely, not too harmful if it does happen, and I can't think of a very easy solution since we have to re-fetch $('.calendar>.row:not(.blankLoader) .calendar-body .day.available') after each time a date is clicked, so hopefully it won't be a problem.)

On a separate note, if anyone in the future does also want the script to automatically choose the quantities with multiple types of tickets (though IMO just doing it manually is probably easiest), you could just make the following modifications:

Replace setAdultTickets with:

function setTickets(ticketsWanted, categoryLineNumber = 0) {
	const ticketsCount = parseInt($('.quantity-control.row > input')[categoryLineNumber].value, 10);
	const ticketChangeIterations = Math.abs(ticketsWanted - ticketsCount);
	const ticketChangeButton = $(`.quantity-control.row > button.typcn-${ticketsCount < ticketsWanted ? 'plus' : 'minus'}`)[categoryLineNumber];

	for (let i = 0; i < ticketChangeIterations; i++) {
		ticketChangeButton.click();
	}
}

And in the first line of checkForTickets, replace setAdultTickets(adultTicketsWanted); with e.g.:

	setTickets(1, 3); // 1 x "Family (2 Adults + 2 Children)" ticket
	setTickets(1, 1); // 1 x "Child" ticket

As you can probably tell, the 2nd parameter is the line number of the type of ticket you want, starting from 0 (so e.g. 0 for "Adult", 1 for "Child", 2 for "4 and Under", and so on), and the 1st parameter is how many of that type of ticket you want.

Hope this helps!

@Silverleaf42
Copy link

setTickets(1, 3); // 1 x "Family (2 Adults + 2 Children)" ticket
setTickets(1, 1); // 1 x "Child" ticket

Thanks @Rovack! I haven't gotten them yet, but I'm trying the changes you suggested now to see if it works and I'll let you know.

@Silverleaf42
Copy link

BTW, I ran the script all day yesterday and not a thing popped up. Ran it again early this morning (starting at 6:15am ET) and got our tickets within 15 minutes. Thanks again, @Rovack

@Rovack
Copy link
Author

Rovack commented Mar 8, 2023

Yay, that's great news @Silverleaf42!! Thanks for letting me know it worked.
Hope you have a great time there! 😄

@sjezewska
Copy link

Hello!

First of all, I want to show my gratitude and say thank you SO much for sharing this with everyone and helping people out even to this day :) :)

I managed to get the script running which is great, but I'd like to check a couple of things if you don't mind. Sometimes I see "Insufficient quantities" though as far as I can tell, I've only specified one type of ticket (family). I've attached the code I'm using. Am I maybe doing something wrong there?

Not a big deal, though after some time I see a timeout. Again, not sure if I've missed something or am doing something incorrectly.

Thank you in advance and I hope you're having a great day!

function setAdultTickets(adultTicketsWanted) { const adultTicketsCount = parseInt($('.quantity-control.row > input')[3].value, 10); const ticketChangeIterations = Math.abs(adultTicketsWanted - adultTicketsCount); const ticketChangeButton = $(.quantity-control.row > button.typcn-${adultTicketsCount < adultTicketsWanted ? 'plus' : 'minus'}`)[3];

for (let i = 0; i < ticketChangeIterations; i++) {
	ticketChangeButton.click();
}

}

function playSound(src) {
return new Promise((resolve) => {
const audio = new Audio(src);
audio.onended = resolve;
audio.play();
});
}

function repeatHeyListen() {
playSound('https://www.myinstants.com/media/sounds/hey_listen.mp3')
.then(repeatHeyListen);
}

function waitForAvailability(monthWanted) {
return new Promise((resolve) => {
setTimeout(() => {
const availableEls = $('.c-14-all.available'), isLoading = $('.calendar-modal[data-component=eventTimeModal] .modal-content > .loading-container.hide').length === 0;
if (isLoading) {
return waitForAvailability(monthWanted)
.then((res) => resolve(res));
}

		if (monthWanted == null) {
			resolve({ availableEls });
		}

		const monthValue = $('[name="ctl00$ContentPlaceHolder$SalesChannelDetailControl$EventsDateTimeSelectorModal$EventsDateTimeSelector$CalendarSelector$MonthDropDownList"]')[0].value;
		const month = parseInt(monthValue.replace(/^\D+/g, ''), 10);

		if (month < monthWanted) {
			console.log(`Month too early (${month}) - skipping to next month.`);
			$('[name="ctl00$ContentPlaceHolder$SalesChannelDetailControl$EventsDateTimeSelectorModal$EventsDateTimeSelector$CalendarSelector$NextMonthImageButton"]').click();
			return waitForAvailability(monthWanted).then(res => resolve(res));
		}

		resolve({ availableEls, month });
	}, 1000);
});

}

function playSounds() {
playSound('https://www.myinstants.com/media/sounds/mlg-airhorn.mp3')
.then(() => playSound('https://www.myinstants.com/media/sounds/sound-9______.mp3'))
.then(() => playSound('https://www.myinstants.com/media/sounds/ps_1.mp3'))
.then(() => playSound('https://www.myinstants.com/media/sounds/wrong-answer-sound-effect.mp3'))
.then(() => playSound('https://www.myinstants.com/media/sounds/lalalalala.swf.mp3'))
.then(() => playSound('https://www.myinstants.com/media/sounds/tuturu_1.mp3'))
.then(() => playSound('https://www.myinstants.com/media/sounds/hallelujahshort.swf.mp3'))
.then(repeatHeyListen);
}

function addTicketsToBasket(dayElement) {
dayElement.click();

setTimeout(() => waitForAvailability()
	.then(() => {
		$('.ui-control.button.select-time')[0].click();

		setTimeout(() => {
			$('.typcn.typcn-shopping-cart.ng-binding')[0].click();
		}, 2000);
	}), 2000);

}

function checkForTickets(datesWanted=[6, 7, 8], adultTicketsWanted=1, checkFrequency=10, monthWanted) {
setAdultTickets(adultTicketsWanted);

function check() {
if ($('.ui-control.button.extendSession').length != 0) {
console.log('Extending session');
$('.ui-control.button.extendSession').click();
}

	$('.shared-calendar-button').click();

	waitForAvailability(monthWanted)
		.then(({ availableEls, month }) => {
			console.log(new Date(), `Availability loaded${month != null ? ` for month ${month}` : ''}. Checking for relevant dates...`);

			if (monthWanted != null && month > monthWanted) {
				console.log(`Month is too late (${month}). Will check again in ${checkFrequency} seconds.`);
				setTimeout(check, checkFrequency * 1000);
				return;
			}

			for (let i = 0; i < availableEls.length; i++) {
				const day = parseInt(availableEls[i].innerText, 10);
				console.log('Day', day, 'is available...');
				if (datesWanted.includes(day)) {
					console.log('Found tickets!!!!!');
					playSounds();
					addTicketsToBasket(availableEls[i]);
					return;
				}
			}

			console.log(`Relevant dates not yet available. Will check again in ${checkFrequency} seconds.`);
			$('#page > div:nth-child(11) > div.modal.info-modal.w-auto-c > div > div.close').click();
			setTimeout(check, checkFrequency * 1000);
	});
};
check();

}

function checkForTicketsInMonth(datesWanted, monthWanted, adultTicketsWanted, checkFrequency) {
return checkForTickets(datesWanted, adultTicketsWanted, checkFrequency, monthWanted);
}`

Timeout 2023-06-08 at 5 09 32 PM

@Rovack
Copy link
Author

Rovack commented Jun 8, 2023

Hey @sjezewska. :) For the "Insufficient quantities" case, it's even weirder that it can happen with just 1 type of ticket, but I guess it's just a thing the system does now. Anyway, the changes specified here, to addTicketsToBasket and check, should address that.

As for the timeout, I never saw it myself, but could it be the same "Extend session" issue Flame239 mentioned here?
If so, you could try the fix they suggested.

Let me know if either of these problems persists even with these changes, and I can look more deeply into it.

@sjezewska
Copy link

@Rovack sorry for the late reply and thanks for getting back to me. I kept seeing "Insufficient quantities" from time to time and I think the timeout issue was because of my internet connection sigh. I ended up getting tickets though, so REALLY happy! Thank you again :)

@Rovack
Copy link
Author

Rovack commented Jun 16, 2023

Great to hear it, @sjezewska! Hope you have a wonderful time. :)

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment