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/* global USERS */
const EventEmitter = require('events')
const self = new EventEmitter()
self._nodes = {
toggle: document.querySelector('.fav')
}
self.get = function () {
const localStorageUser = JSON.parse(window.localStorage.getItem('fav'))
if (localStorageUser == null) return
const correctedUser = USERS.filter(user =>
user.type === localStorageUser.type &&
user.value === localStorageUser.value)[0]
return correctedUser
}
self.set = function (user) {
window.localStorage.setItem('fav', JSON.stringify(user))
self._nodes.innerHTML = ''
}
self.delete = function () {
window.localStorage.removeItem('fav')
}
self.updateDom = function (isFavorite) {
if (isFavorite) {
self._nodes.toggle.innerHTML = ''
} else {
self._nodes.toggle.innerHTML = ''
}
}
self.update = function (selectedUser) {
const currentUser = self.get()
if (currentUser == null) {
self.updateDom(false)
return
}
const isEqual = currentUser.type === selectedUser.type &&
currentUser.index === selectedUser.index
self.updateDom(isEqual)
}
self.toggle = function (selectedUser) {
const currentUser = self.get()
const isEqual = currentUser != null &&
currentUser.type === selectedUser.type &&
currentUser.index === selectedUser.index
if (isEqual) {
self.delete()
self.updateDom(false)
} else {
self.set(selectedUser)
self.updateDom(true)
}
}
self._handleClick = function () {
self.emit('click')
}
self._nodes.toggle.addEventListener('click', self._handleClick)
module.exports = self
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