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/* global ga */
const fuzzy = require('fuzzy')
// const getUsers = require('./getUsers')
const getURLOfUser = require('./getURLOfUser')
const removeDiacritics = require('diacritics').remove
const getWeek = require('./getWeek')
const searchNode = document.querySelector('#search')
const inputNode = searchNode.querySelector('input[type="text"]')
const autocompleteNode = document.querySelector('.autocomplete')
const scheduleIframe = document.querySelector('#schedule')
const prevButton = document.querySelectorAll('input[type="button"]')[0]
const nextButton = document.querySelectorAll('input[type="button"]')[1]
const currentWeekNode = document.querySelector('.current')
const favNode = document.querySelector('.fav')
let selectedResult = -1
let selectedUser
let results
let matches
let offset = 0
function getUsers () {
const nodes = document.querySelector('#data')
.querySelectorAll('.data-user')
const elements = Array.prototype.slice.call(nodes)
const users = elements.map(userNode => {
const type = userNode.querySelector('.data-type').textContent
const value = userNode.querySelector('.data-value').textContent
const index = Number(userNode.querySelector('.data-index').textContent)
const other = userNode.querySelector('.data-other').textContent
const isID = userNode.querySelector('.data-isID').textContent === 'true'
return { type, value, index, other, isID }
})
document.querySelector('#data').remove()
return users
}
const users = getUsers()
function getCurrentFav () {
if (!window.localStorage.getItem('fav')) return
const favCode = window.localStorage.getItem('fav').split(':')
const fav = users.filter(user => user.type === favCode[0] && user.index === Number(favCode[1]))[0]
return fav
}
function changeFav (isFav) {
if (!selectedUser) return
if (isFav) {
window.localStorage.setItem('fav', selectedUser.type + ':' + selectedUser.index)
} else {
window.localStorage.removeItem('fav')
}
updateFavNode()
}
function usersEqual (user1, user2) {
if (user1 == null || user2 == null) return false
return user1.type === user2.type && user1.index === user2.index
}
function updateFavNode () {
if (usersEqual(getCurrentFav(), selectedUser)) {
favNode.innerHTML = ''
} else {
favNode.innerHTML = ''
}
}
function updateWeekText () {
if (offset === 0) currentWeekNode.innerHTML = `Week ${getWeek() + offset}`
else currentWeekNode.innerHTML = `<strong>Week ${getWeek() + offset}</strong>`
}
updateWeekText()
searchNode.addEventListener('keydown', function (e) {
if (e.key === 'ArrowDown' || e.key === 'ArrowUp') {
e.preventDefault()
if (document.querySelector('.selected')) document.querySelector('.selected').classList.remove('selected')
const change = e.key === 'ArrowDown' ? 1 : -1
selectedResult += change
if (selectedResult < -1) selectedResult = matches.length - 1
else if (selectedResult > matches.length - 1) selectedResult = -1
if (selectedResult !== -1) autocompleteNode.children[selectedResult].classList.add('selected')
}
})
searchNode.addEventListener('input', function (e) {
autocompleteNode.innerHTML = ''
if (inputNode.value.trim() === '') return
selectedResult = -1
results = fuzzy.filter(removeDiacritics(inputNode.value), users, {
extract: function (el) { return removeDiacritics(el.value) }
}).slice(0, 7)
matches = results.map(function (el) { return users[el.index].value })
results.forEach(function (result) {
const resultNode = document.createElement('li')
resultNode.innerHTML = `${result.original.value}<span class="other">${result.original.other}</span>`
autocompleteNode.appendChild(resultNode)
})
})
searchNode.addEventListener('submit', submitForm)
function submitForm (e) {
if (e) e.preventDefault()
if (results == null) return
const indexInResult = selectedResult === -1 ? 0 : selectedResult
selectedUser = users[results[indexInResult].index]
updateFavNode()
inputNode.value = selectedUser.value
autocompleteNode.innerHTML = ''
inputNode.blur()
scheduleIframe.src = getURLOfUser(offset, selectedUser.type, selectedUser.index + 1)
const hitType = 'event'
let eventCategory
switch (selectedUser.type) {
case 'c':
eventCategory = 'Class'
break
case 't':
eventCategory = 'Teacher'
break
case 'r':
eventCategory = 'Room'
break
case 's':
eventCategory = 'Student'
break
}
let eventAction
if (selectedUser.isID) {
eventAction = 'by id'
} else {
eventAction = 'by name'
}
const eventLabel = selectedUser.value
ga(function () {
ga('send', { hitType, eventCategory, eventAction, eventLabel })
})
}
autocompleteNode.addEventListener('click', function (e) {
if (e.target.tagName === 'LI' && e.target.parentElement === autocompleteNode) {
selectedResult = Array.prototype.indexOf.call(e.target.parentElement.childNodes, e.target)
submitForm()
}
})
prevButton.addEventListener('click', function () {
offset--
updateWeekText()
submitForm()
})
nextButton.addEventListener('click', function () {
offset++
updateWeekText()
submitForm()
})
inputNode.addEventListener('click', function () {
inputNode.select()
})
inputNode.addEventListener('blur', function () {
const isSafari = /^((?!chrome|android).)*safari/i.test(navigator.userAgent)
if (!isSafari) {
inputNode.selectionStart = inputNode.selectionEnd = -1
}
})
searchNode.addEventListener('blur', function (e) {
autocompleteNode.innerHTML = ''
})
favNode.addEventListener('click', function () {
if (usersEqual(getCurrentFav(), selectedUser)) {
changeFav(false)
} else {
changeFav(true)
}
})
const currentFav = getCurrentFav()
if (currentFav) {
selectedUser = currentFav
if (selectedUser.other !== '') {
inputNode.value = selectedUser.other
} else {
inputNode.value = selectedUser.value
}
scheduleIframe.src = getURLOfUser(offset, selectedUser.type, selectedUser.index + 1)
updateFavNode()
}
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