ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

button {
  border: none;
  background-color: transparent;
}

.list {
  position: relative;
  width: 100%;
}

.container {
  padding: 6px 32px 6px 12px;
  height: 41px;
  display: flex;
  align-items: center;
  border-radius: 8px;
  border: 2px solid #d8dae0;
  transition: .3s
}

.list-selected {
  display: flex;
  gap: 12px;
  flex-wrap: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.container::after {
  position: absolute;
  right: 15px;
  content: '\25bc';
  color: #5a6176;
  transition: .3s
}

.list.active .container {
  border: 2px solid #6a2ae9;
  box-shadow: 0 0 0 3px #e2d5f8
}

.list.active .container::after {
  rotate: 180deg
}

.list.active .list-dropdown {
  display: block;
}

.tag {
  margin: 4px 0;
  padding: 6px 8px 6px 12px;
  display: flex;
  background-color: #f3f4f6;
  border-radius: 4px;
}

.tag-text {
  text-transform: uppercase;
  text-wrap: nowrap;
  margin-right: 6px;
  font-size: 18px;
}

.tag-close {
  cursor: pointer;
  padding: 2px;
  display: flex;
  align-items: center;
}

.tag-close svg {
  width: 18px;height: 18px;
  color: #5a6176
}

.list-dropdown {
  position: absolute;
  margin-top: 16px;
  padding: 6px 0 12px;
  display: none;
  width: 100%;
  border: 2px solid #d8dae0;
  border-radius: 8px;
  box-sizing: border-box
}

.list-search-input {
  padding: 6px 12px;
  width: 100%;
  border-radius: 4px;
  border: 2px solid #d8dae0;
}

.list-dropdown .list-search {
  padding: 12px;
  border-bottom: 2px solid #d8dae0
}

ul.menu {
  margin: 12px 0;
  overflow: auto;
  max-height: 100px;
  height: 100%;
  transition: .3s
}

.list li {
  cursor: pointer;
  padding: 6px 12px;
  display: flex;
  width: calc(100% - 24px)
}

li {
  position: relative;
  display: flex;
  align-items: center;
  text-transform: uppercase
}

.v-checkbox {
  display: block;
  margin-right: 12px;
  width: 22px;
  height: 22px;
  border: 2px solid #d8dae0;
  border-radius: 4px
}

.v-checkbox.checked::before {
  position: absolute;
  content: '✓';
  color: white;
  text-align: center;
  padding: 1px 4px;
}

.v-checkbox.checked {
  background-color: #7f47eb;
  border: 2px solid #6829e8;
  transition: .3s
}

const menus = [
  {
    id: 1,
    title: 'Product design',
    checkbox: false
  },
  {
    id: 2,
    title: 'Mobile design',
    checkbox: false
  },
  {
    id: 3,
    title: 'Web design',
    checkbox: false
  },
  {
    id: 4,
    title: 'UX design',
    checkbox: true
  }
];

const list = document.querySelector('.list');
const selectedList = document.querySelector('.list-selected');
const dropdownMenu = document.querySelector('.menu');
const search = document.querySelector('.list-search-input');

const handleInput = (e) => {
  const closeTarget = e.target.closest('.container');
  if (e) list.classList.add('active');
}

const addTag = (tag) => {
  const template = document.querySelector('.list-tag');
  const li = template.content.cloneNode(true);
  
  li.querySelector('li').setAttribute('data-id', tag.id);
  li.querySelector('.tag-text').textContent = tag.title;
      
  selectedList.append(li)
}

const removeTag = (target) => selectedList.removeChild(target);

const updateCheckbox = (el, action = 'add') => action === 'add' ? el.classList.add('checked') : el.classList.remove('checked');

const handleCloseTag = (e) => {
  e.stopPropagation();
  const close = e.target.closest('.tag-close');
  
  if (close) {
    const target = e.target.closest('li')
    const id = Number.parseInt(target.getAttribute('data-id'));
    const checkbox = dropdownMenu.querySelector(`li[data-list-id="${id}"] .v-checkbox`);
    
    menus.map(v => {
      if (v.id === id) v.checkbox = false
    });
    
    updateCheckbox(checkbox, 'remove')
    removeTag(target);
  }
}

const handleClose = (e) => {
  const target = e.target.closest('.list');
  
  if (!target) list.classList.remove('active');
}

const updateDropdownList = (curList) => {
  dropdownMenu.textContent = '';
  const template = document.querySelector('.template-li');
  
  curList.forEach((v,i) => {
    const li = template.content.cloneNode(true);
    
    li.querySelector('li').setAttribute('data-list-id', v.id);

    if (v.checkbox) {
      li.querySelector('.v-checkbox').classList.add('checked');
    }

    li.querySelector('.v-text').textContent = v.title;
    
    dropdownMenu.append(li);
  })
}

const handleChange = (e) => {
  const target = e.target.closest('.menu li');
  const id = Number.parseInt(target.getAttribute('data-list-id'));
  const checkbox = dropdownMenu.querySelector(`li[data-list-id="${id}"] .v-checkbox`);
  
  menus.map(v => {
    if (v.id === id) {
      v.checkbox = !v.checkbox;
      
      if (v.checkbox) {
        addTag(v);
        updateCheckbox(checkbox, 'add')
      }
      else {
        removeTag(selectedList.querySelector(`li[data-id="${id}"]`));
        updateCheckbox(checkbox, 'remove')
      }
    }
  });
}

const handleSearch = (e) => {
  const findElement = e.target.value;
  
  const updateList = menus.filter(v => {
    if (v.title.toLowerCase().includes(findElement)) {
      return v
    }
  })
  
  updateDropdownList(updateList);
}

const init = () => {
  updateDropdownList(menus);
  menus.forEach(v => {
    if (v.checkbox) addTag(v)
  })
}

init();

list.addEventListener('click', handleInput);
selectedList.addEventListener('click', handleCloseTag);
dropdownMenu.addEventListener('click', handleChange);
search.addEventListener('input', handleSearch)
window.addEventListener('click', handleClose);