/* 孕期专题页共用渲染（2026-11-01）
 * 用户：「其他妈妈也在搜」剩下的问题都做成专题页，UI 和文字参考「叶酸、DHA、铁、钙要不要补」（topic/buji）。
 * 每个专题目录只放 index.html（内联 window.TOPIC 数据）+ img/hero.webp，版式全在这里和 article.css。
 * 区块 type：cards 卡片矩阵 / timeline 按孕周横向条 / vs 两栏对照 / list 清单 / steps 步骤 / doc 找医生 / check 自查。
 * 自成一页：不引 app.js；返回回 ../../；工具跳转走 ../_shared/tools.js（同源路径 + search + hash）。
 */
(function () {
  /* 11-09 小程序「复制链接」直达：加载 js/host-nav.js（容器页返回走 navigateBack、页内链接开容器页） */
  try { if (!window.MBHost && document.currentScript) { var hs = document.createElement('script'); hs.src = new URL('../../js/host-nav.js?v=26110907', document.currentScript.src).href; document.head.appendChild(hs); } } catch (e) {}
  'use strict';
  var D = window.TOPIC;
  if (!D) return;
  var $ = function (s, r) { return (r || document).querySelector(s); };
  var $$ = function (s, r) { return [].slice.call((r || document).querySelectorAll(s)); };
  function esc(s) { return String(s == null ? '' : s).replace(/[&<>"]/g, function (c) { return { '&': '&amp;', '<': '&lt;', '>': '&gt;', '"': '&quot;' }[c]; }); }
  /* 只放行 <em>：答案里用它标重点，其余一律转义 */
  function em(s) { return esc(s).replace(/&lt;(\/?)em&gt;/g, '<$1em>'); }
  function hp(n) { var h = (location.hash.slice(1) || '') + '&' + (location.search.slice(1) || ''); var m = h.match(new RegExp('(?:^|&)' + n + '=([^&]*)')); return m ? decodeURIComponent(m[1]) : ''; }
  function ic(id) { return '<svg class="ic"><use href="#i-' + id + '" xlink:href="#i-' + id + '"/></svg>'; }

  /* 主色 */
  var C = D.color || ['#2E7CF6', '46,124,246', '#EAF2FF'];
  var root = document.documentElement.style;
  root.setProperty('--c', C[0]); root.setProperty('--cr', C[1]); root.setProperty('--cb', C[2]);

  var SPRITE = '<svg class="hide" aria-hidden="true" xmlns="http://www.w3.org/2000/svg">' +
    '<symbol id="i-back" viewBox="0 0 24 24"><path d="M15 5l-7 7 7 7"/></symbol>' +
    '<symbol id="i-down" viewBox="0 0 24 24"><path d="M6 9l6 6 6-6"/></symbol>' +
    '<symbol id="i-clock" viewBox="0 0 24 24"><circle cx="12" cy="12" r="8.5"/><path d="M12 7.5V12l3 2"/></symbol>' +
    '<symbol id="i-doc" viewBox="0 0 24 24"><path d="M12 21s-7-4.4-7-10.2A4.3 4.3 0 0 1 12 8a4.3 4.3 0 0 1 7 2.8C19 16.6 12 21 12 21z"/><path d="M12 11v4M10 13h4"/></symbol>' +
    '</svg>';

  function title() {
    var out = '';
    (D.title || [D.q]).forEach(function (p, i) {
      if (p === '\n') out += '<br>';
      else out += i === 2 ? '<span class="hl">' + esc(p) + '</span>' : esc(p);
    });
    return out;
  }
  function sh(s, i) {
    return '<div class="sh"><span class="no num">' + (i < 9 ? '0' : '') + (i + 1) + '</span><h2>' + esc(s.title) + '</h2>' +
      (s.en ? '<span class="en">' + esc(s.en) + '</span>' : '') + '</div>' + (s.key ? '<p class="key">' + esc(s.key) + '</p>' : '');
  }

  var R = {
    cards: function (s) {
      var h = '<div class="mx">';
      (s.items || []).forEach(function (x) {
        h += '<div class="nu fi' + (x.must ? ' must' : '') + '"><div class="nu-h"><b>' + esc(x.name) + '</b>' + (x.verdict ? '<span class="vd">' + esc(x.verdict) + '</span>' : '') + '</div>' +
          (x.label ? '<span class="lb">' + esc(x.label) + '</span>' : '') +
          '<span class="amt num">' + esc(x.amt) + (x.unit ? '<small>' + esc(x.unit) + '</small>' : '') + '</span>' +
          (x.when ? '<div class="when">' + ic('clock') + '<span>' + esc(x.when) + '</span></div>' : '') + '</div>';
      });
      h += '</div>';
      if (s.why) h += '<details class="why"><summary>' + esc(s.why.q) + ic('down') + '</summary><p>' + esc(s.why.a) + '</p></details>';
      return h;
    },
    timeline: function (s, i) {
      var h = '<div class="me" data-me></div><div class="gt" data-gt><div class="col-hl"></div><div class="gr hd"><span></span>';
      (s.cols || []).forEach(function (c, k) { h += '<span data-c="' + k + '">' + esc(c) + '</span>'; });
      h += '</div>';
      (s.rows || []).forEach(function (r) {
        h += '<div class="gr fi"><span class="nm">' + esc(r.name) + '</span><div class="bars">';
        (r.bars || []).forEach(function (b) { h += '<i class="' + esc(b.cls || '') + (b.span === 2 ? ' s2' : b.span === 3 ? ' s3' : b.span === 4 ? ' s4' : '') + '">' + esc(b.t) + '</i>'; });
        h += '</div></div>';
      });
      h += '</div><div class="legend">';
      (s.legend || [['', '重点'], ['lt', '日常'], ['dash', '听医生']]).forEach(function (l) { h += '<span><i class="' + esc(l[0]) + '"></i>' + esc(l[1]) + '</span>'; });
      return h + '</div>';
    },
    vs: function (s) {
      var hd = s.heads || ['', ''];
      var h = '<div class="vs"><div class="vs-h"><span></span><span>' + esc(hd[0]) + '</span><span>' + esc(hd[1]) + '</span></div>';
      (s.rows || []).forEach(function (r) {
        h += '<div class="vr fi"><span class="nm">' + esc(r.name) + '</span><span class="cl' + (r.win === 0 ? ' win' : '') + '">' + esc(r.a) + '</span><span class="cl' + (r.win === 1 ? ' win' : '') + '">' + esc(r.b) + '</span></div>';
      });
      h += '</div>';
      if (s.note) h += '<p class="vs-note">' + esc(s.note) + '</p>';
      return h;
    },
    list: function (s) {
      var h = '<ul class="ls">';
      (s.items || []).forEach(function (x) { h += '<li class="fi ' + esc(x.tone || 'ok') + '"><i>' + esc(x.tag) + '</i><div><b>' + esc(x.b) + '</b>' + (x.s ? '<span>' + esc(x.s) + '</span>' : '') + '</div></li>'; });
      return h + '</ul>';
    },
    steps: function (s) {
      var h = '<ol class="st">';
      (s.items || []).forEach(function (x) { h += '<li class="fi"><b>' + esc(x.b) + '</b>' + (x.s ? '<span>' + esc(x.s) + '</span>' : '') + '</li>'; });
      return h + '</ol>';
    },
    doc: function (s) {
      var h = '<div class="doc"><span class="di">' + ic('doc') + '</span><div><b>' + esc(s.b) + '</b><span>' + esc(s.s) + '</span></div></div><div class="tags">';
      (s.tags || []).forEach(function (t) { h += '<span>' + esc(t) + '</span>'; });
      return h + '</div>';
    },
    check: function (s, i) {
      var h = '<div class="tool" data-check="' + i + '">';
      (s.qs || []).forEach(function (q, k) {
        h += '<div class="q" data-q="' + k + '"><div class="q-t"><span class="num">Q' + (k + 1) + '</span>' + esc(q.q) + '</div><div class="opts">';
        (q.opts || []).forEach(function (o, j) { h += '<button class="opt" data-v="' + j + '">' + esc(o.t) + '</button>'; });
        h += '</div></div>';
      });
      return h + '<p class="hint">' + esc(s.hint || ((s.qs || []).length + ' 题选完自动出结果，只在本机计算')) + '</p>' +
        '<div class="res"><h3>给你的建议</h3><ul></ul><p class="res-note">仅供参考，具体以产检医生意见为准。</p></div></div>';
    }
  };

  var h = SPRITE + '<div id="scroll"><header class="bar" id="bar"><button class="back" id="back" aria-label="返回">' + ic('back') + '</button><span class="t">孕期专题</span></header>' +
    '<div class="top"><section class="hero"><span class="eyebrow">' + esc(D.eyebrow) + '</span><h1>' + title() + '</h1>' +
    (D.sub ? '<p class="sub">' + esc(D.sub) + '</p>' : '') + '</section>' +
    '<div class="pic"><img src="img/hero.webp" alt="' + esc(D.heroAlt || '') + '"></div></div>' +
    '<div class="answer"><span class="pill">一句话答案</span><p>' + em(D.answer) + '</p></div>';
  if (D.three && D.three.length) {
    h += '<section class="three fade"><h2>记住这 ' + D.three.length + ' 点</h2><ol class="nc">';
    D.three.forEach(function (x, i) { h += '<li class="fi"><span class="n num">' + (i + 1) + '</span><div><b>' + esc(x.b) + '</b><span>' + esc(x.s) + '</span></div></li>'; });
    h += '</ol></section>';
  }
  (D.sections || []).forEach(function (s, i) {
    if (!R[s.type]) return;
    h += '<section class="blk' + (s.tint ? ' tint' : '') + ' fade" id="s' + (i + 1) + '">' + sh(s, i) + R[s.type](s, i) + '</section>';
  });
  h += '<div id="tools" class="fade"></div>';
  if (D.sources && D.sources.length) {
    h += '<details class="src"><summary>参考来源' + ic('down') + '</summary><ul>';
    D.sources.forEach(function (x) { h += '<li>' + esc(x) + '</li>'; });
    h += '</ul></details>';
  }
  h += '<p class="foot">本页为科普参考，不能代替医生诊断。</p>' +
    '<div class="tp-brand"><img src="../../assets/img/brand-logo-c.png" alt="兜爸心选"><i></i><span>孕育知识整理</span></div></div>';   /* 11-02 品牌落款（样式在 article.css） */
  document.body.insertAdjacentHTML('afterbegin', h);
  document.title = D.q || document.title;

  var sc = $('#scroll');
  $('#back').addEventListener('click', function () {
    if (window.MBHost && MBHost.back(function () { location.href = '../../' + location.search + location.hash; })) return;   /* 11-09 容器页：回小程序上一页 */
    if (document.referrer && document.referrer.indexOf(location.host) >= 0 && history.length > 1) history.back();
    else location.href = '../../' + location.search + location.hash;
  });
  sc.addEventListener('scroll', function () { $('#bar').classList.toggle('on', sc.scrollTop > 8); }, { passive: true });
  function goTo(el) {
    var top = el.getBoundingClientRect().top - sc.getBoundingClientRect().top + sc.scrollTop - 60;
    sc.scrollTo({ top: top, behavior: 'smooth' });
  }

  /* 推荐工具 */
  function renderTools(wk) {
    if (!window.TopicTools || !D.tools) return;
    var el = $('#tools'); el.className = 'fade in';
    TopicTools.render(el, D.tools.items || [], { title: D.tools.title || '用得上的工具', color: C[0], bg: C[2], wk: wk || 0 });
  }
  renderTools(0);

  /* 自查：每题选一个，全部选完按 a→t→k 排出最多 3 条 */
  var TAG = { a: '问医生', t: '加一点', k: '保持' }, ORD = { a: 0, t: 1, k: 2 };
  $$('[data-check]').forEach(function (box) {
    var s = D.sections[+box.dataset.check], ans = {};
    $$('.q', box).forEach(function (qb) {
      $$('.opt', qb).forEach(function (o) {
        o.addEventListener('click', function () {
          $$('.opt', qb).forEach(function (x) { x.classList.toggle('on', x === o); });
          ans[qb.dataset.q] = +o.dataset.v;
          var res = $('.res', box), first = !res.classList.contains('on');
          if (Object.keys(ans).length < s.qs.length) return;
          var L = s.qs.map(function (q, k) { return q.opts[ans[k]].adv; }).filter(Boolean);
          L.sort(function (x, y) { return (ORD[x.tone] || 0) - (ORD[y.tone] || 0); });
          var ul = $('ul', res); ul.innerHTML = '';
          L.slice(0, 3).forEach(function (it) {
            var li = document.createElement('li'); li.className = it.tone;
            li.innerHTML = '<i></i><div><b></b><span></span></div>';
            li.querySelector('i').textContent = TAG[it.tone] || '';
            li.querySelector('b').textContent = it.b; li.querySelector('span').textContent = it.s || '';
            ul.appendChild(li);
          });
          $('.hint', box).style.display = 'none';
          res.classList.add('on');
          if (first) setTimeout(function () { goTo(res); }, 60);
        });
      });
    });
  });

  /* 按孕周点亮 timeline 那一列 */
  function markWeek(w, post) {
    (D.sections || []).forEach(function (s, i) {
      if (s.type !== 'timeline' || !s.weeks) return;
      var col = -1;
      s.weeks.forEach(function (r, k) { if (r && !post && w >= r[0] && w < r[1]) col = k; });
      if (post) s.cols.forEach(function (c, k) { if (/产后|哺乳|月子|出生/.test(c)) col = k; });
      if (col < 0) return;
      var sec = $('#s' + (i + 1)), hd = $('.gr.hd [data-c="' + col + '"]', sec), gt = $('[data-gt]', sec), box = $('.col-hl', sec);
      function place() {
        var a = hd.getBoundingClientRect(), g = gt.getBoundingClientRect();
        box.style.left = (a.left - g.left - 1) + 'px'; box.style.width = (a.width + 2) + 'px'; box.classList.add('on');
      }
      place(); window.addEventListener('resize', place);
      hd.style.color = C[0];
      if (s.tips && s.tips[col]) { var me = $('[data-me]', sec); me.textContent = (post ? '宝宝出生了' : '你在孕 ' + w + ' 周') + '：' + s.tips[col]; me.classList.add('on'); }
    });
  }
  var openid = hp('openid');
  if (openid) {
    fetch('/api/mp/public/mama-box/pregnancy?openid=' + encodeURIComponent(openid))
      .then(function (r) { return r.ok ? r.json() : null; })
      .then(function (j) {
        var p = j && j.code === 200 && j.result; if (!p) return;
        if (p.postpartum) markWeek(0, true);
        else if (p.week != null && !p.empty) { markWeek(p.week, false); renderTools(p.week); }
      }).catch(function () {});
  }

  /* 进场 fade-up */
  $$('.fade').forEach(function (el) { $$('.fi', el).forEach(function (c, i) { c.style.transitionDelay = (i * 60 + 80) + 'ms'; }); });
  if ('IntersectionObserver' in window) {
    var io = new IntersectionObserver(function (es) { es.forEach(function (e) { if (e.isIntersecting) { e.target.classList.add('in'); io.unobserve(e.target); } }); }, { root: sc, threshold: .08 });
    $$('.fade').forEach(function (el) { io.observe(el); });
  } else $$('.fade').forEach(function (el) { el.classList.add('in'); });

  /* 禁止下拉回弹 */
  var y0 = 0;
  sc.addEventListener('touchstart', function (e) { y0 = e.touches[0].clientY; }, { passive: true });
  sc.addEventListener('touchmove', function (e) {
    var dy = e.touches[0].clientY - y0;
    if ((sc.scrollTop <= 0 && dy > 0) || (sc.scrollTop + sc.clientHeight >= sc.scrollHeight - 1 && dy < 0)) e.preventDefault();
  }, { passive: false });
  document.addEventListener('touchmove', function (e) { if (!sc.contains(e.target)) e.preventDefault(); }, { passive: false });
})();