// Page Builder client. Loads the member's existing page (if any), takes a
// four-question brief, and rebuilds at the same /p/<id> URL so shared links
// never break.
(function () {
  'use strict';
  var $ = function (id) { return document.getElementById(id); };
  var angle = 'overview', busy = false, myId = null;
  // null = building a NEW page; '' = rebuilding the main one; 'slug' = that page
  var replacing = null, pages = [], cap = 0;

  function renderAngles(angles) {
    var host = $('pgAngles');
    host.innerHTML = '';
    Object.keys(angles).forEach(function (k) {
      var b = document.createElement('button');
      b.type = 'button';
      b.className = 'pg-angle' + (k === angle ? ' on' : '');
      b.textContent = angles[k].label;
      b.addEventListener('click', function () { angle = k; renderAngles(angles); });
      host.appendChild(b);
    });
  }


  function esc(s) {
    return String(s == null ? '' : s).replace(/[&<>"']/g, function (c) {
      return { '&': '&amp;', '<': '&lt;', '>': '&gt;', '"': '&quot;', "'": '&#39;' }[c];
    });
  }

  function setMode(mode, label) {
    replacing = mode;
    $('pgGo').textContent = mode === null ? '🧱 Build a new page' : '🔁 Rebuild ' + (label || 'this page');
    if (mode !== null) $('pgCard').scrollIntoView({ behavior: 'smooth', block: 'start' });
  }

  function renderPages() {
    var wrap = $('pgPagesWrap'), host = $('pgPages');
    if (!pages.length) { wrap.style.display = 'none'; return; }
    wrap.style.display = 'block';
    host.innerHTML = '';
    pages.forEach(function (p) {
      var row = document.createElement('div');
      row.className = 'pg-page' + (p.slug ? '' : ' main');
      var left = document.createElement('div');
      left.style.minWidth = '210px';
      left.innerHTML = '<div class="nm">' + esc(p.name || 'Your page') +
        (p.slug ? '' : ' <span style="color:var(--gold);font-size:11px;font-weight:900">MAIN</span>') + '</div>' +
        '<div class="u">rmcircle.team' + esc(p.url) + '</div>' +
        '<div class="meta">' + esc(p.angle || '') +
        (p.updatedAt ? ' · updated ' + esc(String(p.updatedAt).slice(0, 10)) : '') + '</div>';
      row.appendChild(left);

      var acts = document.createElement('div');
      acts.className = 'pg-acts';
      var view = document.createElement('a');
      view.className = 'btn btn-secondary btn-sm';
      view.href = p.url; view.target = '_blank'; view.rel = 'noopener';
      view.textContent = 'View';
      acts.appendChild(view);

      var copy = document.createElement('button');
      copy.className = 'btn btn-secondary btn-sm';
      copy.textContent = 'Copy link';
      copy.addEventListener('click', function () {
        if (navigator.clipboard) navigator.clipboard.writeText('https://rmcircle.team' + p.url);
        copy.textContent = 'Copied';
        setTimeout(function () { copy.textContent = 'Copy link'; }, 1400);
      });
      acts.appendChild(copy);

      var re = document.createElement('button');
      re.className = 'btn btn-secondary btn-sm';
      re.textContent = 'Rebuild';
      re.addEventListener('click', function () { setMode(p.slug || '', p.name || 'this page'); });
      acts.appendChild(re);

      // The main page keeps its address forever — it is on banners and printed
      // flyers — so only the extra pages can be removed.
      if (p.slug) {
        var del = document.createElement('button');
        del.className = 'btn btn-secondary btn-sm';
        del.textContent = 'Delete';
        del.addEventListener('click', function () { removePage(p.slug, p.name, del); });
        acts.appendChild(del);
      }
      row.appendChild(acts);
      host.appendChild(row);
    });

    var left = Math.max(0, cap - pages.length);
    $('pgCapNote').innerHTML = 'Holding <b>' + pages.length + '</b> of <b>' + cap + '</b> pages your level allows' +
      (left ? ' — room for ' + left + ' more.' : ' — delete one to add another, or upgrade to hold more.');
    if (!left && replacing === null) setMode(pages.length ? (pages[0].slug || '') : null, pages[0] && pages[0].name);
  }

  async function removePage(slug, name, btn) {
    if (!window.confirm('Delete "' + (name || slug) + '"? Anything pointing at that address will fall back to your main page.')) return;
    btn.disabled = true;
    try {
      var r = await fetch('/api/public/suite-page', {
        method: 'POST', headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({ remove: slug })
      });
      var d = await r.json();
      if (r.ok) { pages = d.pages || []; cap = d.cap || cap; renderPages(); }
      else btn.disabled = false;
    } catch (e) { btn.disabled = false; }
  }

  function showMeter(m) {
    if (!m || !m.limit) { $('pgMeter').textContent = ''; return; }
    $('pgMeter').innerHTML = '<b>' + m.remaining + '</b> of ' + m.limit + ' page builds left this month';
  }

  var built = false;

  function showLive(url) {
    built = true;
    $('pgUrl').textContent = url.replace(/^https:\/\//, '');
    $('pgOpen').href = url;
    $('pgLive').style.display = 'block';
    // cache-bust so a rebuild always shows the NEW page, not the old one
    $('pgFrame').src = url + '?preview=' + Date.now();
    $('pgPrev').style.display = 'block';
  }

  // Live status under the button. A silent 40-second wait reads as "frozen",
  // so we narrate it and count the seconds.
  var progTimer = null;
  function startProgress() {
    var el = $('pgProg'), t0 = Date.now();
    var steps = [
      'Reading your notes…',
      'Writing your headline and story…',
      'Choosing your angle video…',
      'Laying out your page…',
      'Almost there — finishing up…'
    ];
    el.style.display = 'block';
    var tick = function () {
      var s = Math.round((Date.now() - t0) / 1000);
      var i = Math.min(steps.length - 1, Math.floor(s / 9));
      el.innerHTML = '<span class="spin"></span>' + steps[i] + ' <span style="opacity:.65">(' + s + 's)</span>';
    };
    tick();
    progTimer = setInterval(tick, 1000);
  }
  function stopProgress() {
    if (progTimer) clearInterval(progTimer);
    progTimer = null;
    $('pgProg').style.display = 'none';
  }

  function gate(msg) {
    var g = $('pgGate');
    g.style.display = 'block';
    g.innerHTML = msg;
    $('pgCard').style.opacity = '.55';
    $('pgGo').disabled = true;
  }

  async function boot() {
    try {
      var r = await fetch('/api/public/suite-page');
      if (r.status === 401) {
        gate('You’re not signed in yet. <a href="/suite" style="color:var(--gold);font-weight:700">Open the Suite</a> and connect the wallet that holds your position, then come back.');
        renderAngles({ overview: { label: 'General overview' } });
        return;
      }
      if (r.status === 403) { gate('The Page Builder isn’t open for this position yet. <a href="/suite" style="color:var(--gold);font-weight:700">See your Suite</a>.'); return; }
      if (!r.ok) return;
      var d = await r.json();
      myId = d.id;
      renderAngles(d.angles || {});
      if (d.meter && d.meter.reason === 'locked') {
        gate('The Page Builder unlocks at <b>Ascensus (level 2)</b>. You’re at level ' + d.level + ' — your next upgrade opens it, along with the Copy Engine. <a href="/how-pay-works#exact-costs" style="color:var(--gold);font-weight:700">See what an upgrade costs →</a>');
        return;
      }
      showMeter(d.meter);
      pages = d.pages || [];
      cap = d.cap || 0;
      // First-time member: no pages yet, so the button builds their main one.
      // Anyone with pages starts in "add another" mode; renderPages flips that
      // to rebuild if they are already at their level's limit.
      setMode(pages.length ? null : '', null);
      renderPages();
      if (d.page) {
        if (d.page.name) $('pgName').value = d.page.name;
        if (d.page.audience) $('pgAudience').value = d.page.audience;
        if (d.page.story) $('pgStory').value = d.page.story;
        if (d.page.angle) { angle = d.page.angle; renderAngles(d.angles || {}); }
        showLive('https://rmcircle.team/p/' + d.id);
      }
    } catch (e) {}
  }

  async function run() {
    if (busy) return;
    busy = true;
    $('pgErr').style.display = 'none';
    $('pgGo').disabled = true;
    // Hide any previous preview while the new one is being written, so a stale
    // or half-loaded frame can't look like a broken result.
    $('pgPrev').style.display = 'none';
    $('pgFrame').removeAttribute('src');
    $('pgGo').innerHTML = '<span class="spin"></span>Writing your page…';
    startProgress();
    try {
      var r = await fetch('/api/public/suite-page', {
        method: 'POST', headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({ name: $('pgName').value.trim(), audience: $('pgAudience').value.trim(), story: $('pgStory').value.trim(), angle: angle, replace: replacing === null ? undefined : replacing })
      });
      var d = await r.json();
      if (!r.ok) {
        $('pgErr').textContent = d.error || 'That didn’t go through — try again.';
        $('pgErr').style.display = 'block';
        if (d.meter) showMeter(d.meter);
      } else {
        showMeter(d.meter);
        showLive(d.url);
        if (d.pages) { pages = d.pages; cap = d.cap || cap; renderPages(); }
        setMode(d.canAddMore ? null : (d.slug || ''), null);
        $('pgLive').scrollIntoView({ behavior: 'smooth', block: 'nearest' });
      }
    } catch (e) {
      $('pgErr').textContent = 'Connection hiccup — try again.';
      $('pgErr').style.display = 'block';
    }
    stopProgress();
    busy = false;
    $('pgGo').disabled = false;
    setMode(replacing, null);
  }

  document.addEventListener('DOMContentLoaded', function () {
    boot();
    $('pgGo').addEventListener('click', run);
    $('pgCopyUrl').addEventListener('click', function () {
      navigator.clipboard.writeText($('pgOpen').href).then(function () {
        $('pgCopied').style.display = '';
        setTimeout(function () { $('pgCopied').style.display = 'none'; }, 2500);
      });
    });
  });
})();