/* BestDadJokes.lol client-side behavior */
(function () {
  'use strict';
  document.body.classList.add('js-ux');

  var JOKES = (window.BDJ && window.BDJ.jokes) || [];
  function byId(id) { return JOKES[id]; }

  function $(sel, root) { return (root || document).querySelector(sel); }
  function $$(sel, root) { return Array.prototype.slice.call((root || document).querySelectorAll(sel)); }

  /* ---- punchline reveal ---- */
  document.addEventListener('click', function (e) {
    var punch = e.target.closest && e.target.closest('[data-punch]');
    if (punch && !punch.classList.contains('revealed')) {
      punch.classList.add('revealed');
    }
  });

  /* ---- random ---- */
  var lastId = -1;
  function randomJoke() {
    if (!JOKES.length) return null;
    var j, guard = 0;
    do { j = JOKES[Math.floor(Math.random() * JOKES.length)]; guard++; }
    while (j.id === lastId && guard < 20 && JOKES.length > 1);
    lastId = j.id;
    return j;
  }
  function fillRandom(setupEl, punchEl) {
    var j = randomJoke();
    if (!j) return null;
    setupEl.textContent = j.s;
    punchEl.textContent = j.p;
    punchEl.classList.add('revealed');
    punchEl.setAttribute('data-no-blur', '');
    return j;
  }

  /* ---- clipboard ---- */
  function copyText(text, btn) {
    function ok() { if (btn) { var o = btn.textContent; btn.textContent = '✅ Copied'; setTimeout(function () { btn.textContent = o; }, 1400); } }
    if (navigator.clipboard && navigator.clipboard.writeText) {
      navigator.clipboard.writeText(text).then(ok, function () { legacy(); });
    } else { legacy(); }
    function legacy() {
      var ta = document.createElement('textarea');
      ta.value = text; document.body.appendChild(ta); ta.select();
      try { document.execCommand('copy'); ok(); } catch (err) {}
      document.body.removeChild(ta);
    }
  }

  /* ---- share card (1080x1350) ---- */
  function wrapText(ctx, text, x, y, maxW, lh) {
    var words = text.split(' '), line = '', lines = [];
    words.forEach(function (w) {
      var test = line + w + ' ';
      if (ctx.measureText(test).width > maxW && line) { lines.push(line.trim()); line = w + ' '; }
      else { line = test; }
    });
    lines.push(line.trim());
    lines.forEach(function (l, i) { ctx.fillText(l, x, y + i * lh); });
    return y + lines.length * lh;
  }
  function makeCard(setup, punch, cb) {
    var c = document.createElement('canvas');
    c.width = 1080; c.height = 1350;
    var ctx = c.getContext('2d');
    ctx.fillStyle = '#fff8ec'; ctx.fillRect(0, 0, 1080, 1350);
    // border frame
    ctx.strokeStyle = '#2b2118'; ctx.lineWidth = 8;
    ctx.strokeRect(36, 36, 1008, 1278);
    // emoji
    ctx.font = '110px serif'; ctx.textAlign = 'center';
    ctx.fillText('😂', 540, 240);
    // setup
    ctx.fillStyle = '#2b2118'; ctx.textAlign = 'center';
    ctx.font = '700 54px ui-rounded, -apple-system, "Segoe UI", Arial, sans-serif';
    var y = wrapText(ctx, setup, 540, 380, 880, 72);
    // punchline
    ctx.fillStyle = '#e4572e';
    ctx.font = '800 66px ui-rounded, -apple-system, "Segoe UI", Arial, sans-serif';
    y = wrapText(ctx, punch, 540, y + 150, 880, 86);
    // footer
    ctx.fillStyle = '#5c4f43'; ctx.font = '700 34px -apple-system, "Segoe UI", Arial, sans-serif';
    ctx.fillText('BestDadJokes.lol', 540, 1240);
    cb(c);
  }
  function shareCard(setup, punch) {
    var name = 'dad-joke.png';
    makeCard(setup, punch, function (canvas) {
      if (navigator.canShare && navigator.share) {
        canvas.toBlob(function (blob) {
          if (!blob) return;
          var file = new File([blob], name, { type: 'image/png' });
          if (navigator.canShare({ files: [file] })) {
            navigator.share({ files: [file], title: 'A dad joke for you' }).catch(function () {});
          }
        }, 'image/png');
      } else {
        var a = document.createElement('a');
        a.download = name; a.href = canvas.toDataURL('image/png');
        document.body.appendChild(a); a.click(); document.body.removeChild(a);
      }
    });
  }

  function wireCard(opts) {
    var setupEl = $(opts.setup), punchEl = $(opts.punch);
    if (!setupEl || !punchEl) return;
    var current = opts.initial || null;
    if (opts.nextBtn) {
      $(opts.nextBtn).addEventListener('click', function () { current = fillRandom(setupEl, punchEl); });
    }
    if (opts.copyBtn) {
      $(opts.copyBtn).addEventListener('click', function (e) {
        if (current) copyText(current.s + ' ' + current.p, e.target);
      });
    }
    if (opts.shareBtn) {
      $(opts.shareBtn).addEventListener('click', function () {
        if (current) shareCard(current.s, current.p);
      });
    }
    return {
      get: function () { return current; },
      set: function (j) { current = j; setupEl.textContent = j.s; punchEl.textContent = j.p; punchEl.classList.add('revealed'); punchEl.setAttribute('data-no-blur', ''); }
    };
  }

  /* ---- page-specific wiring ---- */
  // hero
  var hero = wireCard({ setup: '[data-hero-setup]', punch: '[data-hero-punch]', nextBtn: '[data-hero-next]', copyBtn: '[data-copy-hero]', shareBtn: '[data-share-hero]' });
  if (hero) hero.set(randomJoke());

  // generator
  wireCard({ setup: '[data-gen-setup]', punch: '[data-gen-punch]', nextBtn: '[data-gen-next]', copyBtn: '[data-gen-copy]', shareBtn: '[data-gen-share]' });

  // joke of the day (+ ?d= override for archive permalinks)
  var jodSetup = $('[data-jod-setup]');
  if (jodSetup) {
    var m = /[?&]d=(\d{4}-\d{2}-\d{2})/.exec(location.search);
    var base = new Date(Date.UTC(2026, 8, 15)); // launch epoch for the rotation
    var jod = null;
    if (m) {
      var parts = m[1].split('-'), d = new Date(Date.UTC(+parts[0], +parts[1] - 1, +parts[2]));
      if (!isNaN(d.getTime())) {
        var idx = Math.floor((d - new Date(d.getUTCFullYear(), 0, 1)) / 86400000) + d.getUTCMonth() * 31 + d.getUTCDate();
        jod = JOKES[(d.getTime() / 86400000 | 0) % JOKES.length] || JOKES[0];
        $('[data-jod-date]').textContent = d.toUTCString().slice(0, 16);
        var ctl = { setup: '[data-jod-setup]', punch: '[data-jod-punch]' };
        jodSetup.textContent = jod.s;
        $('[data-jod-punch]').textContent = jod.p;
        $('[data-jod-punch]').classList.add('revealed');
        $('[data-jod-punch]').setAttribute('data-no-blur', '');
      }
    }
    var jodCopy = $('[data-jod-copy]');
    if (jodCopy) {
      var punchEl = $('[data-jod-punch]');
      jodCopy.addEventListener('click', function (e) { copyText(jodSetup.textContent + ' ' + punchEl.textContent, e.target); });
    }
    var jodShare = $('[data-jod-share]');
    if (jodShare) {
      jodShare.addEventListener('click', function () { shareCard(jodSetup.textContent, $('[data-jod-punch]').textContent); });
    }
    // archive: last 30 days
    var arch = $('[data-jod-archive]');
    if (arch && JOKES.length) {
      var today = new Date();
      var html = '';
      for (var i = 1; i <= 30; i++) {
        var dd = new Date(today.getTime() - i * 86400000);
        var iso = dd.toISOString().slice(0, 10);
        var jj = JOKES[Math.floor(dd.getTime() / 86400000) % JOKES.length];
        html += '<figure class="joke-card"><p class="jod-date">' + iso + '</p>' +
          '<p class="joke-setup">' + jj.s.replace(/</g, '&lt;') + '</p>' +
          '<div class="joke-punch" data-punch>' + jj.p.replace(/</g, '&lt;') + '</div></figure>';
      }
      arch.innerHTML = html;
    }
  }

  /* ---- per-card copy/share buttons ---- */
  document.addEventListener('click', function (e) {
    var t = e.target;
    if (t.hasAttribute && t.hasAttribute('data-copy')) {
      var j = byId(+t.getAttribute('data-copy'));
      if (j) copyText(j.s + ' ' + j.p, t);
    }
    if (t.hasAttribute && t.hasAttribute('data-share')) {
      var jj = byId(+t.getAttribute('data-share'));
      if (jj) shareCard(jj.s, jj.p);
    }
  });

  /* ---- search ---- */
  var box = $('#search-box');
  if (box) {
    var results = $('[data-search-results]');
    var countEl = $('[data-search-count]');
    var emptyEl = $('[data-search-empty]');
    function renderResults(q) {
      q = q.trim().toLowerCase();
      var hits = [];
      if (q.length > 1) {
        hits = JOKES.filter(function (j) {
          return (j.s + ' ' + j.p).toLowerCase().indexOf(q) !== -1;
        }).slice(0, 60);
      }
      countEl.textContent = q.length > 1 ? hits.length + ' joke' + (hits.length === 1 ? '' : 's') + ' matching "' + q + '"' : '';
      emptyEl.style.display = (q.length > 1 && !hits.length) ? 'block' : 'none';
      results.innerHTML = hits.map(function (j) {
        return '<figure class="joke-card"><p class="joke-setup">' + j.s.replace(/</g, '&lt;') + '</p>' +
          '<div class="joke-punch" data-punch>' + j.p.replace(/</g, '&lt;') + '</div>' +
          '<figcaption class="joke-actions"><button class="btn-tiny" data-copy="' + j.id + '">📋 Copy</button>' +
          '<a class="btn-tiny" style="text-decoration:none" href="/category/' + j.cat + '/">Category →</a></figcaption></figure>';
      }).join('');
    }
    box.addEventListener('input', function () { renderResults(box.value); });
    var q = /[?&]q=([^&]*)/.exec(location.search);
    if (q) { box.value = decodeURIComponent(q[1].replace(/\+/g, ' ')); }
    renderResults(box.value);
    box.focus();
  }

  /* ---- close mobile nav on selection ---- */
  $$('.site-nav a').forEach(function (a) {
    a.addEventListener('click', function () {
      var t = $('#navtoggle');
      if (t) t.checked = false;
    });
  });
})();