source: Klonkt/src/views/pages/paid-gate.ejs@ c3d12a6

<div class="container pg-navwrap">
  <%- include('../partials/post-nav', { newerPost: (typeof newerPost !== 'undefined' ? newerPost : null), olderPost: (typeof olderPost !== 'undefined' ? olderPost : null) }) %>
</div>

<article class="pg-page" id="pg-page">
  <% if (typeof pgTitle !== 'undefined' && pgTitle) { %><h1 class="pg-title"><%= pgTitle %></h1><% } %>

  <% if (typeof pgTeaser !== 'undefined' && pgTeaser) { %>
    <div class="pg-teaser"><p><%= pgTeaser %></p></div>
  <% } %>

  <section class="pg-card">
    <div class="pg-lock">💶</div>
    <h2 class="pg-h2">Voor supporters</h2>
    <p class="pg-sub">
      Deze post is voor supporters van deze site. Steun je de maker op Patreon
      <% if (typeof pgCents !== 'undefined' && pgCents) { %>(vanaf &euro;<%= (pgCents/100).toFixed(2) %>)<% } %>,
      dan ontgrendel je 'm met je passkey. Geen account, geen cookie.
    </p>
    <button type="button" id="pg-unlock" class="pg-btn">Ontgrendelen</button>
    <p id="pg-status" class="pg-status" hidden></p>
    <% if (typeof pgPatronUrl !== 'undefined' && pgPatronUrl) { %>
      <p class="pg-join">Nog geen supporter? <a href="<%= pgPatronUrl %>" target="_blank" rel="noopener">Word het op Patreon</a> en ontgrendel daarna met je passkey.</p>
    <% } %>
  </section>
</article>

<script src="/assets/vendor/simplewebauthn-browser.umd.min.js"></script>
<script>
(function () {
  var base = "<%= (typeof siteUrlBase !== 'undefined' && siteUrlBase ? siteUrlBase : '') %>";
  var slug = "<%= pgSlug %>";
  var btn = document.getElementById('pg-unlock');
  var status = document.getElementById('pg-status');
  var page = document.getElementById('pg-page');
  function say(msg, err) { status.hidden = false; status.textContent = msg; status.classList.toggle('is-err', !!err); }
  function toLink() { location.href = base + '/paid/link?post=' + encodeURIComponent(slug); }

  if (!window.SimpleWebAuthnBrowser || !window.PublicKeyCredential) { btn.textContent = 'Word supporter'; btn.addEventListener('click', toLink); return; }

  btn.addEventListener('click', function () {
    btn.disabled = true;
    say('Bevestig met je passkey…');
    fetch(base + '/paid/challenge?post=' + encodeURIComponent(slug))
      .then(function (r) { if (!r.ok) throw { link: true }; return r.json(); })
      .then(function (data) {
        return window.SimpleWebAuthnBrowser.startAuthentication({ optionsJSON: data.options })
          .then(function (response) {
            return fetch(base + '/paid/unlock', {
              method: 'POST', headers: { 'Content-Type': 'application/json' },
              body: JSON.stringify({ response: response, blob: data.blob }),
            });
          });
      })
      .then(function (r) { return r.json().then(function (j) { return { status: r.status, j: j }; }); })
      .then(function (res) {
        if (res.j && res.j.ok) {
          // Swap the gate for the full post, client-side (no cookie kept).
          var h = document.createElement('div');
          h.innerHTML = (res.j.title ? '<h1 class="post-title">' + res.j.title + '</h1>' : '') +
            '<div class="post-content">' + res.j.html + '</div>';
          page.replaceWith(h);
        } else if (res.status === 403) {
          toLink();   // no valid passkey yet (or lapsed tier): link via Patreon
        } else {
          btn.disabled = false; say('Ontgrendelen mislukt. Probeer opnieuw.', true);
        }
      })
      .catch(function (e) {
        if (e && e.link) { toLink(); return; }
        if (e && e.name === 'NotAllowedError') { toLink(); return; }   // cancelled / no passkey -> link
        btn.disabled = false; say('Er ging iets mis. Probeer opnieuw.', true);
      });
  });
})();
</script>

<style>
  .pg-navwrap { max-width: 720px; margin: 0.5rem auto 1.5rem; padding: 0 1rem; }
  .pg-page { max-width: 720px; margin: 0 auto 3rem; padding: 0 1rem; }
  .pg-title { font-family: var(--font-display, serif); font-size: clamp(1.6rem, 4vw, 2.2rem); margin: 0 0 1rem; }
  .pg-teaser { font-family: var(--font-body, serif); font-size: 1.1rem; line-height: 1.7; color: var(--ink); opacity: .95;
    -webkit-mask-image: linear-gradient(180deg, #000 55%, transparent); mask-image: linear-gradient(180deg, #000 55%, transparent); }
  .pg-card { margin: 1.5rem 0 0; border: 1px solid color-mix(in srgb, var(--ink, #000) 16%, transparent); border-radius: 18px; padding: 30px 26px; text-align: center; }
  .pg-lock { font-size: 38px; margin-bottom: 6px; }
  .pg-h2 { font-size: 22px; margin: 0 0 8px; }
  .pg-sub { opacity: .85; line-height: 1.6; margin: 0 auto 12px; max-width: 34em; }
  .pg-btn { padding: 12px 24px; border: none; border-radius: 10px; font: inherit; font-weight: 600; cursor: pointer;
    background: var(--accent, #6b8f71); color: #fff; }
  .pg-btn:disabled { opacity: .6; cursor: default; }
  .pg-status { margin: 12px 0 0; opacity: .9; }
  .pg-status.is-err { color: #c0392b; }
  .pg-join { margin: 14px 0 0; font-size: .92rem; opacity: .8; }
</style>