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const smallCups = document.querySelectorAll('.cup-small')
const listers = document.getElementById('liters')
const percentage = document.getElementById('percentage')
const remained = document.getElementById('remained')
updateBigCup()
smallCups.forEach((cup, idx) => {
cup.addEventListener('click', () => highlightCups(idx))
})
function highlightCups(idx) {
if(smallCups[idx].classList.contains('full') && !smallCups[idx].nextElementSibling.classList.contains('full')) {
idx--
}
smallCups.forEach((cup, idx2) => {
if(idx2 <= idx) {
cup.classList.add('full')
} else {
cup.classList.remove('full')
}
})
updateBigCup()
}
function updateBigCup() {
const fullCups = document.querySelectorAll('.cup-small.full').length
const totalCups = smallCups.length
if(fullCups === 0) {
percentage.style.visibility = 'hidden'
percentage.style.height = 0
} else {
percentage.style.visibility = 'visible'
percentage.style.height = `${fullCups / totalCups * 330}px`
percentage.innerText = `${fullCups / totalCups * 100}%`
}
if(fullCups === totalCups) {
remained.style.visibility = 'hidden'
remained.style.height = 0
} else {
remained.style.visibility = 'visible'
listers.innerText = `${2 - (250 * fullCups / 1000)}L`
}
}