www/src/layouts/partials/package-grid.html

<!-- Package Grid -->

<section>

  <!-- Package Grid Header -->
  <hr>
    <div class="container package-grid-header">
      <section class="flex">
        <h3>packages</h3>
        {{- partial "sort-dropdown.html" -}}
      </section>
      <p>There are already plenty of packages available through tea. As the communi’tea builds the library, contributions will live here.</p>
    </div>
  <hr>
  <div class="container package-grid">

    <!-- Start Package Grid -->

    <div class="row package-row black-bg g-0">
      <div id="packageGrid" class="package-grid">
        {{ range $.Site.Data.packages }}
          {{- partial "package-thumbnail.html" .}}
        {{ end }}
      </div>
    </div>
  </div>
  <hr>
  <div id="loadMoreSection" class="container small">
    <div id="loadMorePackagesBtn"><i class="icon-enter-arrow"></i> SHOW MORE</div>
  </div>
</section>

<style>
  .container.small {
    padding-top: 1em;
    padding-bottom: 1em;
  }
  .package-grid {
    display: grid;
    grid-template-columns: auto auto;
  }
  #loadMorePackagesBtn {
    cursor: pointer;
    font-size: 2rem;
    font-family: "pp-neue-machina", sans-serif;
    background-color: #1a1a1a;
    color: #fff;
    padding-top: 0.279vw;
    text-decoration: none;
    text-transform: uppercase;
    transition: 0.1s linear;
  }
  #loadMorePackagesBtn .icon-enter-arrow {
    display: inline-block;
    position: relaitve;
    transition: all 0.2s ease-in-out;
  }
  #loadMorePackagesBtn:hover .icon-enter-arrow{
    display: inline-block;
    transform: rotate(-45deg) !important;
  }
  #loadMoreSection.hidden {
    display: none;
  }
  @media only screen and (max-width: 576px) {
    #loadMoreSection {
      display: none;
    }
  }

  @media only screen and (min-width: 576px) {
    .package-grid {
      /* changes to 3 column thumbs */
      grid-template-columns: auto auto auto;
    }
  }

  @media only screen and (min-width: 992px) {
    .package-grid {
      /* changes to 4 column thumbs */
      grid-template-columns: auto auto auto auto;
    }
  }

  .card-thumbnail.hidden {
    height: 0px;
    padding: 0px;
    margin: 0px;
    border: 0px;
    overflow: hidden;
  }
</style>

<script language="javascript" type="text/javascript">
  const sortOptions = {
    popularity: 'popularity',
    last_modified: 'last_modified',
  }
  let sortBy = sortOptions.popularity; // last_modified
  let sortDirection = 'desc'; // asc
  let limit = 16;

  function getPackageThumbs() {
    const grid = document.getElementById('packageGrid');
    return Array.from(grid.children).filter((e) => e.dataset && e.dataset.name);
  }

  const packagesCount = getPackageThumbs().length;

  function sortPackages() {
    const packages = getPackageThumbs();

    const sortedPackages = packages.sort((a, b) => {
      if (sortBy === sortOptions.popularity) {
        const aPop = +a.dataset.popularity;
        const bPop = +b.dataset.popularity;
        return sortDirection === 'asc' ? aPop-bPop : bPop - aPop;
      } else { // last_modified
        const aDate = new Date(a.dataset.last_modified);
        const bDate = new Date(b.dataset.last_modified);
        return sortDirection === 'asc' ? aDate-bDate : bDate - aDate;
      }
    });

    const grid = document.getElementById('packageGrid');
    grid.textContent = '';

    for(const sp of sortedPackages) {
      grid.appendChild(sp);
    }
    
    const isPopularity = sortBy === sortOptions.popularity;

    setBtnStyles(sortOptions.popularity, isPopularity);
    setBtnStyles(sortOptions.last_modified, !isPopularity);
    refreshDisplayedPackages();
  }

  function refreshDisplayedPackages() {
    const packages = getPackageThumbs();
    let i = 0;
    for(const sp of packages) {
      if (i >= limit) {
        sp.classList.add('hidden');
      } else {
        sp.classList.remove('hidden');
      }
      i++;
    }
  }

  const loadMoreButton = document.getElementById('loadMorePackagesBtn');
  loadMoreButton.addEventListener('click',() => {
    limit += 16;
    refreshDisplayedPackages();
    if (limit >= packagesCount) {
      const loadMoreSection = document.getElementById('loadMoreSection');
      loadMoreSection.classList.add('hidden');
    }
  }, false);

  function getSortBtns(type) {
    const typeBtn = document.getElementById(`dropdown-${type}-btn`);
    const typeDownBtn = document.getElementById(`${type}-down-btn`);
    const typeUpBtn = document.getElementById(`${type}-up-btn`);
    return { typeBtn, typeDownBtn, typeUpBtn };
  }

  function setBtnStyles(type, active) {
    const { typeBtn, typeDownBtn, typeUpBtn } = getSortBtns(type);
    if (active) {
      typeBtn.classList.add('active');
      if (sortDirection === 'asc') {
        typeUpBtn.classList.add('active');
        typeDownBtn.classList.remove('active');
      } else {
        typeDownBtn.classList.add('active');
        typeUpBtn.classList.remove('active');
      }
    } else {
      typeBtn.classList.remove('active');
      typeDownBtn.classList.remove('active');
      typeUpBtn.classList.remove('active');
    }
  }

  function configureSortButton(type) {
    const { typeBtn, typeDownBtn, typeUpBtn } = getSortBtns(type);
    typeBtn.addEventListener('click',() => {
      if (sortBy != type) {
        sortBy = type;
        sortPackages();
      }
    }, false);

    typeDownBtn.addEventListener('click',() => {
      if (sortBy != type || sortDirection != 'desc') {
        sortBy = type;
        sortDirection = 'desc';
        sortPackages();
      }
    }, false);

    typeUpBtn.addEventListener('click',() => {
      if (sortBy != type || sortDirection != 'asc') {
        sortBy = type;
        sortDirection = 'asc';
        sortPackages();
      }
    }, false);
  }

  configureSortButton(sortOptions.popularity);
  configureSortButton(sortOptions.last_modified);

  sortPackages();
</script>