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Amtrak Lowest Fare Default with Dropdown

Automatically opens the 'Sort/Filter' dropdown and selects the 'Lowest Fare' option on Amtrak's ticket search results.

  1. // ==UserScript==
  2. // @name         Amtrak Lowest Fare Default with Dropdown
  3. // @namespace    namespace_amtrak_lowest_fare_dropdown
  4. // @version      1.0
  5. // @description  Automatically opens the 'Sort/Filter' dropdown and selects the 'Lowest Fare' option on Amtrak's ticket search results.
  6. // @author       Andrew Lakkis
  7. // @license      MIT
  8. // @match        https://www.amtrak.com/*
  9. // @grant        none
  10. // ==/UserScript==
  11.  
  12. (function() {
  13.     'use strict';
  14.  
  15.     var dropdown;
  16.     var currentButton;
  17.  
  18.     // Function to click the 'Sort/Filter' dropdown
  19.     const openSortFilterDropdown = () => {
  20.         const sortOptionsInterval = setInterval(() => {
  21.             dropdown = document.querySelector('.ng-star-inserted.p-3.align-items-center.d-flex.sort-and-filter-btn');
  22.             currentButton = document.querySelector('[amt-auto-test-id="search-results-current-sortby-filter"]');
  23.  
  24.             if (dropdown && !(currentButton.innerText === 'Lowest Fare')) {
  25.                 dropdown.click(); // Simulate a click to open the dropdown
  26.                 setTimeout(selectLowestFare, 500); // Adjust time as needed based on site behavior
  27.                 clearInterval(sortOptionsInterval); // Stop the interval
  28.             }
  29.         }, 100);
  30.  
  31.     };
  32.  
  33.  
  34.     // Function to select the 'Lowest Fare' option
  35.     const selectLowestFare = () => {
  36.         // Wait for the sort options to be available in the DOM after opening the dropdown
  37.         const sortOptionsInterval = setInterval(() => {
  38.             const sortOptions = document.querySelector('mat-radio-group[formcontrolname="sortBy"]');
  39.             if (sortOptions) {
  40.                 clearInterval(sortOptionsInterval);
  41.                 const lowestFareOption = sortOptions.querySelector('[for="mat-radio-5-input"]');
  42.                 if (lowestFareOption) {
  43.                     // Simulate a click on the 'Lowest Fare' radio button
  44.                     lowestFareOption.click();
  45.                     dropdown.click();
  46.                 }
  47.             }
  48.         }, 100);
  49.     };
  50.  
  51.  
  52.  
  53.     // Run the function when the DOM is fully loaded
  54.     const dropdownOpened = openSortFilterDropdown();
  55.     if (dropdownOpened) {
  56.         // Wait a brief moment for dropdown animations and options to become visible
  57.         setTimeout(selectLowestFare, 500); // Adjust time as needed based on site behavior
  58.     } 
  59. })();