/**
 * AKSRT Widget Set
 *
 * Handles widget-local interactions and floating QR widgets.
 *
 * @package AKSRT
 */

(function () {
  'use strict';

  function restHeaders() {
    var headers = { Accept: 'application/json' };
    if (window.aksrtData && aksrtData.restNonce) {
      headers['X-WP-Nonce'] = aksrtData.restNonce;
    }
    return headers;
  }

  function initWidgetTabs() {
    document.querySelectorAll('.widget-tab-posts[data-aksrt-tab-posts]').forEach(function (widget) {
      if (widget.dataset.aksrtWidgetTabsBound === '1') return;
      widget.dataset.aksrtWidgetTabsBound = '1';

      var tabs = widget.querySelectorAll('.widget-tab-posts__tab');
      var panels = widget.querySelectorAll('.widget-tab-posts__panel');
      if (!tabs.length || !panels.length) return;
      var rest = widget.getAttribute('data-rest') || '';
      var defaultCount = widget.getAttribute('data-count') || '5';

      function loadPanel(panel, tab) {
        if (!panel || panel.getAttribute('data-loaded') === '1' || !rest) return;
        var orderby = tab.getAttribute('data-orderby') || 'date';
        var cat = tab.getAttribute('data-cat') || '0';
        var tabCount = tab.getAttribute('data-tab-count') || '0';
        var style = widget.getAttribute('data-style') || 'mini';
        var paginate = widget.getAttribute('data-paginate') || 'none';
        var qs = new URLSearchParams({
          count: defaultCount,
          orderby: orderby,
          cat: cat,
          tab_count: tabCount,
          style: style,
          paginate: paginate,
          limit_day: tab.getAttribute('data-limit-day') || '0',
          pay_type: tab.getAttribute('data-pay-type') || '',
        });
        var url = rest + (rest.indexOf('?') > -1 ? '&' : '?') + qs.toString();
        panel.classList.add('is-ajax-loading');
        fetch(url, { credentials: 'same-origin', headers: restHeaders() })
          .then(function (r) { return r.json(); })
          .then(function (j) {
            var d = (j && j.data) || j || {};
            var html = d.html || '';
            var pag = d.paginate_html || d.paginateHtml || '';
            panel.innerHTML = (html || '<p class="widget-empty">暂无文章</p>') + (pag || '');
            panel.setAttribute('data-loaded', '1');
            panel.classList.remove('is-ajax-loading');
          })
          .catch(function () {
            panel.classList.remove('is-ajax-loading');
          });
      }

      tabs.forEach(function (tab) {
        tab.addEventListener('click', function () {
          var target = tab.getAttribute('data-tab');
          tabs.forEach(function (item) {
            var active = item === tab;
            item.classList.toggle('active', active);
            item.classList.toggle('is-active', active);
            item.setAttribute('aria-selected', active ? 'true' : 'false');
          });
          panels.forEach(function (panel) {
            var active = panel.getAttribute('data-tab-panel') === target;
            panel.classList.toggle('active', active);
            panel.classList.toggle('is-active', active);
            if (active) {
              panel.removeAttribute('hidden');
              loadPanel(panel, tab);
            } else {
              panel.setAttribute('hidden', '');
            }
          });
        });
      });
    });
  }

  // Homepage category tabs (was inline in CategoryTabsWidget).
  function initCategoryTabs() {
    document.querySelectorAll('[data-aksrt-home-cat-tabs]').forEach(function (section) {
      if (section.dataset.aksrtCatTabsBound === '1') return;
      section.dataset.aksrtCatTabsBound = '1';
      var rest = section.getAttribute('data-rest') || '';
      var count = section.getAttribute('data-count') || '6';
      var layout = section.getAttribute('data-layout') || 'card';
      var columns = section.getAttribute('data-columns') || '3';
      var context = section.getAttribute('data-context') || 'homepage';
      var showMore = section.getAttribute('data-show-more') === '1';
      var tabs = [].slice.call(section.querySelectorAll('.widget-tab-posts__tab'));
      var panels = [].slice.call(section.querySelectorAll('.widget-tab-posts__panel'));
      if (!tabs.length || !panels.length || !rest) return;

      function load(panel) {
        if (!panel || panel.getAttribute('data-loaded') === '1') return;
        var cat = panel.getAttribute('data-cat') || '0';
        var more = panel.getAttribute('data-more') || '';
        var qs = new URLSearchParams({
          cat: cat,
          count: String(count),
          layout: layout,
          columns: String(columns),
          context: context,
        });
        var url = rest + (rest.indexOf('?') > -1 ? '&' : '?') + qs.toString();
        panel.classList.add('is-ajax-loading');
        fetch(url, { credentials: 'same-origin', headers: restHeaders() })
          .then(function (r) { return r.json(); })
          .then(function (j) {
            var d = (j && j.data) || j || {};
            var html = d.html || '';
            if (showMore && more) {
              html += '<div class="aksrt-home-widget__footer"><a class="aksrt-home-widget__more" href="' + more + '">查看更多</a></div>';
            }
            panel.innerHTML = html || '<div class="ajax-item widget-empty muted-2-color">暂无文章</div>';
            panel.setAttribute('data-loaded', '1');
            panel.classList.remove('is-ajax-loading');
          })
          .catch(function () {
            panel.classList.remove('is-ajax-loading');
          });
      }

      tabs.forEach(function (tab) {
        tab.addEventListener('click', function () {
          var target = tab.getAttribute('data-tab');
          tabs.forEach(function (item) {
            var active = item === tab;
            item.classList.toggle('active', active);
            item.setAttribute('aria-selected', active ? 'true' : 'false');
          });
          panels.forEach(function (panel) {
            var active = panel.getAttribute('data-tab-panel') === target;
            panel.classList.toggle('active', active);
            if (active) {
              panel.removeAttribute('hidden');
              load(panel);
            } else {
              panel.setAttribute('hidden', '');
            }
          });
        });
      });
    });
  }

  // Product multi-tab.
  function initProductTabs() {
    document.querySelectorAll('[data-aksrt-product-tab]').forEach(function (root) {
      if (root.dataset.aksrtProductTabBound === '1') return;
      root.dataset.aksrtProductTabBound = '1';
      var rest = root.getAttribute('data-rest') || '';
      var per = root.getAttribute('data-per-page') || '8';
      var style = root.getAttribute('data-style') || 'default';
      var paginate = root.getAttribute('data-paginate') || 'ajax';

      function skeleton(n) {
        n = Math.max(1, Math.min(12, parseInt(n, 10) || 4));
        var html = '<div class="aksrt-product-tab__skeleton">';
        for (var i = 0; i < n; i++) {
          html += '<div class="placeholder-row product-card-placeholder"><div class="placeholder thumb"></div><div class="placeholder k1"></div><div class="placeholder s1"></div></div>';
        }
        return html + '</div>';
      }

      function loadPanel(panel, btn) {
        if (!panel || panel.getAttribute('data-loaded') === '1' || !rest) return;
        var grid = panel.querySelector('[data-aksrt-ajaxpager]');
        if (!grid) return;
        var qs = new URLSearchParams({
          page: '1',
          per_page: per,
          style: style,
          paginate: paginate,
          orderby: btn.getAttribute('data-orderby') || 'date',
          order: 'DESC',
          cat_ids: btn.getAttribute('data-cat-ids') || '',
          tag_ids: btn.getAttribute('data-tag-ids') || '',
          discount_ids: btn.getAttribute('data-discount-ids') || '',
        });
        var url = rest + (rest.indexOf('?') > -1 ? '&' : '?') + qs.toString();
        grid.classList.add('is-ajax-loading');
        if (!grid.querySelector('.aksrt-product-tab__skeleton') && !grid.querySelector('.ajax-item')) {
          grid.insertAdjacentHTML('afterbegin', skeleton(per));
        }
        fetch(url, { credentials: 'same-origin', headers: restHeaders() })
          .then(function (r) { return r.json(); })
          .then(function (j) {
            var d = (j && j.data && (j.data.data || j.data)) || j || {};
            var html = d.html || '';
            var pag = d.paginate_html || d.paginateHtml || '';
            var loader = grid.querySelector('[data-aksrt-ajax-loader]');
            grid.innerHTML = '';
            if (html) grid.insertAdjacentHTML('beforeend', html);
            else grid.insertAdjacentHTML('beforeend', '<p class="widget-empty ajax-item">暂无商品</p>');
            if (pag) grid.insertAdjacentHTML('beforeend', pag);
            if (loader) grid.appendChild(loader);
            panel.setAttribute('data-loaded', '1');
            grid.classList.remove('is-ajax-loading');
          })
          .catch(function () {
            grid.classList.remove('is-ajax-loading');
          });
      }

      root.querySelectorAll('.aksrt-product-tab__header').forEach(function (btn) {
        btn.addEventListener('click', function () {
          root.querySelectorAll('.aksrt-product-tab__header').forEach(function (b) {
            b.classList.remove('is-active');
          });
          root.querySelectorAll('.aksrt-product-tab__panel').forEach(function (p) {
            p.style.display = 'none';
            p.classList.remove('is-active');
          });
          btn.classList.add('is-active');
          var idx = btn.getAttribute('data-tab-index');
          var panel = root.querySelector('.aksrt-product-tab__panel[data-tab-index="' + idx + '"]');
          if (panel) {
            panel.style.display = '';
            panel.classList.add('is-active');
            loadPanel(panel, btn);
          }
        });
      });
    });
  }

  // Main posts load_mode=ajax first paint.
  function initMainPostsLazy() {
    document.querySelectorAll('.aksrt-main-posts[data-load-mode="ajax"]').forEach(function (root) {
      if (root.dataset.aksrtMainLazyBound === '1') return;
      root.dataset.aksrtMainLazyBound = '1';
      if (root.getAttribute('data-loaded') === '1') return;
      var rest = root.getAttribute('data-aksrt-ajax-url') || root.getAttribute('data-rest') || '';
      if (!rest) return;
      var qs = root.getAttribute('data-query') || '';
      var url = rest + (rest.indexOf('?') > -1 ? '&' : '?') + (qs || 'page=1');
      root.classList.add('is-ajax-loading');
      fetch(url, { credentials: 'same-origin', headers: restHeaders() })
        .then(function (r) { return r.json(); })
        .then(function (j) {
          var d = (j && j.data) || j || {};
          var html = d.html || '';
          var pag = d.paginate_html || d.paginateHtml || '';
          var loader = root.querySelector('[data-aksrt-ajax-loader]');
          // Remove skeleton rows.
          root.querySelectorAll('.aksrt-main-posts__skeleton, .posts-mini.placeholder-row, .placeholder-row').forEach(function (n) {
            n.remove();
          });
          if (html) {
            root.insertAdjacentHTML('afterbegin', html);
          } else {
            root.insertAdjacentHTML('afterbegin', '<p class="widget-empty ajax-item">暂无文章</p>');
          }
          // Replace/append paginate.
          var oldPag = root.querySelector('.ajax-pag, .pagenav.ajax-pag');
          if (oldPag) oldPag.remove();
          if (pag) {
            if (loader) loader.insertAdjacentHTML('beforebegin', pag);
            else root.insertAdjacentHTML('beforeend', pag);
          }
          root.setAttribute('data-loaded', '1');
          root.classList.remove('is-ajax-loading');
        })
        .catch(function () {
          root.classList.remove('is-ajax-loading');
        });
    });
  }

  function initFloatingQRCodes() {
    var wrap = document.querySelector('.float-right');
    if (!wrap) return;

    wrap.querySelectorAll('.service-wechat .hover-show-con p, .service-qq .hover-show-con p').forEach(function (node) {
      node.remove();
    });

    if (typeof window.kjua !== 'function') return;

    wrap.querySelectorAll('.float-btn-qrcode').forEach(function (node) {
      if (node.dataset.qrReady === '1') return;

      // footer.php uses data-qrcode-url; keep data-qr-text as fallback alias
      var qrText =
        node.getAttribute('data-qrcode-url') ||
        node.getAttribute('data-qr-text') ||
        window.location.href;
      var qrSize = parseInt(node.getAttribute('data-qr-size') || '120', 10);
      if (!qrText || !qrSize) return;

      try {
        node.innerHTML = '';
        node.appendChild(window.kjua({
          render: 'svg',
          text: qrText,
          size: qrSize,
          ecLevel: 'H',
          fill: '#15171A',
          back: '#FFFFFF',
          quiet: 0,
          crisp: true
        }));
        node.style.width = qrSize + 'px';
        node.style.height = qrSize + 'px';
        node.dataset.qrReady = '1';
      } catch (error) {
        node.dataset.qrReady = '0';
      }
    });
  }

  function init() {
    initWidgetTabs();
    initCategoryTabs();
    initProductTabs();
    initMainPostsLazy();
    initFloatingQRCodes();
  }

  if (document.readyState === 'loading') {
    document.addEventListener('DOMContentLoaded', init);
  } else {
    init();
  }
})();