Horse vaccine script

vaccineAppointmentHelper.js

// ==UserScript==
// @name         CV-19 Vaccine Appointment Helper
// @namespace    http://tampermonkey.net/
// @version      1.0
// @author       Horse
// @match        https://www.nhs.uk/book-a-coronavirus-vaccination/book/Appointment/*
// @grant        none
// @require      https://code.jquery.com/jquery-3.6.0.slim.js
// ==/UserScript==

(function($) {
    'use strict';
    
    var refresh_secs = 1;
    var min_distance = 10;

    var doReload = function(){
        setTimeout(function(){ location.reload(); }, refresh_secs*1000);
    };

    var criteria_met = false;

    // Site listing.
    if ($('.site-list').length) {
        $('.results__item').each((i, el) => {
            var distance = $(el).find('p.distance').text().replace(' Miles away', '');
            distance = parseFloat(distance);
            if (distance < min_distance) {
                criteria_met = true;
                $(el).find('h3 a').click();
            }
        });
        if (!criteria_met) {
            doReload();
        }
    }

    // Chosen a site. Reload available dates.
    if ($('.NoAvailableSlotsForSite').length) {
        doReload();
    }
    if ($('.AppointmentDate1').length || $('.AppointmentDate2').length) {
        $('.nhsuk-radios__item').each((i, el) => {
            var label = $(el).find('label').text();
            if (label.search('AM - Available') > -1 || label.search('PM - Available') > -1) {
                criteria_met = true;
                $(el).find('input.nhsuk-radios__input').click();
                $(el).closest('form').submit();
            }
        });
        if (!criteria_met) {
            doReload();
        }
    }
})(jQuery);

Instructions:

• Install 'tampermonkey' extension for your browser (best done with chrome). Pin it to the addons toolbar so you can see it all the time (black square with 2 round cirlces at the bottom).
• Click the icon -> Create a new script.
• Name it what you want, paste the code above in to replace what's there.
• You can turn the script on and off when on any URL beginning with https://www.nhs.uk/book-a-coronavirus-vaccination/book/Appointment/

Now. Start the appointment booking process. Firstly, right click the webpage and click 'Inspect' - keep the dev tools open throughout the process for the tab you're attempting to book the appointment through.

When you get to the list of sites turn the script on and refresh the page. The page will keep refreshing till it finds a center < 10mi away. When you find the one you want (typically Ashton Gate) click it and don't head back to the site listing page - stay on the page for Ashton gate. It'll keep refreshing until there's an available slot, then once an available slot appears it will instantly move you to the next page for the first available option. Now it's up to you to see this and submit the time you want and move to the next step - the speed the script moves you to the 'select a slot' page already gives you a time advantage, but you still need to be quick. If you miss the slot, go back to the 'Choose a date' page for that site and keep refreshing - it's a numbers game but you'll get there.

If the script starts refreshing or acting up on pages it shouldn't be - disable it via the toggle in the tampermonkey plugin icon's context menu.