multi-start.js

// ==UserScript==
// @name     camp start date
// @version  1
// @grant    none
// ==/UserScript==

// @run-at document-idle

window.addEventListener('load', function() {
  hasClicked = false
  counter = 0

  START_DATE_ARRAY = [
    "Aug 27, 2021",
    "Aug 28, 2021",
  ]

  // modify if next week
  GO_FORWARD_LIMIT = 1
  goForwardCount = 0
  
  go_forward = document.querySelectorAll(`[aria-label*="Go Forward 5 Days"]`)
  // if (goForwardCount < GO_FORWARD_LIMIT) { 
  // setTimeout(() => {}, 21)
  // goForwardCount += 1
  // }
//   go_forward[0].click()  
  
  while (counter < 11 && !hasClicked) {
    setTimeout(() => {
      START_DATE_ARRAY.forEach((startDate) => {
        try {
          start_selector = document.querySelectorAll(`[aria-label*="${startDate}"]`)
          available_elements = Array.from(start_selector).filter((el) => {
            // aria-label is element 1 in node
            return el.attributes[1].value.includes('available')
          })


          if (available_elements[0] && !hasClicked) {
            hasClicked = true


            available_elements.length > 0 && available_elements[0].click()
            console.log('clicked first')
            setTimeout(() => {}, 50)
          }

          // click add to cart
          availability_selector = document.getElementsByClassName('availability-page-book-now-button-tracker')
          availability_selector[0] && availability_selector[0].click()
          console.log('Mischief managed')

        } catch (err) {
          console.error(err)
        }
      })
    }, 2000)

    counter += 1
    
  }
}, false);