/**
 * AKSRT Runtime Infrastructure
 *
 * Unified core primitives for the entire frontend:
 *   aksrt.tbquire(deps, cb)         — lazy script/CSS loader
 *   aksrt.confirm(msg, opts)        — i18n confirm dialog
 *   aksrt.scrollTopTo(target, off)  — smart scroll with header offset
 *   aksrt.loading(el, show)         — element-level loading overlay
 *   aksrt.route(url, title)         — push/replace URL + title
 *
 * Declarative interactions (event delegation on body):
 *   [data-close]         — close target element
 *   [data-onclick]       — trigger click on another element
 *   [data-confirm]       — confirm before action
 *   [data-action]        — universal AJAX action button (like/follow/checkin)
 *   [ajax-action]        — general AJAX button with modal response
 *
 * @package AKSRT
 * @since   5.0.0
 */
(function () {
  'use strict';

  var aksrt = window.aksrt || {};
  window.aksrt = aksrt;

  // ══════════════════════════════════════════════════════════════
  //  §10.11 — tbquire: lazy script/CSS loader
  // ══════════════════════════════════════════════════════════════

  var _loadedScripts = {};
  var _loadingPromises = {};

  function loadSingleScript(src) {
    if (_loadedScripts[src]) return Promise.resolve();
    if (_loadingPromises[src]) return _loadingPromises[src];

    _loadingPromises[src] = new Promise(function (resolve, reject) {
      var isCSS = /\.css(\?|$)/i.test(src);
      var el;

      if (isCSS) {
        el = document.createElement('link');
        el.rel = 'stylesheet';
        el.href = src;
      } else {
        el = document.createElement('script');
        el.src = src;
        el.async = true;
      }

      el.onload = function () {
        _loadedScripts[src] = true;
        delete _loadingPromises[src];
        resolve();
      };
      el.onerror = function () {
        delete _loadingPromises[src];
        reject(new Error('Failed to load: ' + src));
      };

      (document.head || document.documentElement).appendChild(el);
    });

    return _loadingPromises[src];
  }

  aksrt.tbquire = function (deps, callback) {
    if (typeof deps === 'string') deps = [deps];
    if (!Array.isArray(deps) || !deps.length) {
      if (typeof callback === 'function') callback();
      return Promise.resolve();
    }

    var resolvedDeps = deps.map(function (dep) {
      if (/^https?:\/\/|^\//.test(dep)) return dep;
      var map = (window.aksrtData && aksrtData.tbquireMap) || {};
      return map[dep] || dep;
    });

    var p = Promise.all(resolvedDeps.map(loadSingleScript));
    if (typeof callback === 'function') {
      p.then(callback).catch(function (err) {
        console.error('[AKSRT tbquire]', err);
      });
    }
    return p;
  };

  // ══════════════════════════════════════════════════════════════
  //  §10.10 — confirm: i18n confirm dialog + [data-confirm]
  // ══════════════════════════════════════════════════════════════

  var _i18n = (window.aksrtData && aksrtData.i18n) || {};

  function __(key, fallback) {
    return _i18n[key] || fallback || key;
  }

  aksrt.__ = __;

  aksrt.confirm = function (msg, opts) {
    opts = opts || {};
    return new Promise(function (resolve) {
      var overlay = document.createElement('div');
      overlay.className = 'aksrt-confirm-overlay';

      var dialog = document.createElement('div');
      dialog.className = 'aksrt-confirm-dialog';
      dialog.setAttribute('role', 'alertdialog');
      dialog.setAttribute('aria-modal', 'true');

      dialog.innerHTML =
        '<div class="aksrt-confirm__body">' + escapeHtml(msg) + '</div>' +
        '<div class="aksrt-confirm__actions">' +
          '<button type="button" class="aksrt-confirm__cancel btn-ghost">' +
            escapeHtml(opts.cancelText || __('cancel', '取消')) +
          '</button>' +
          '<button type="button" class="aksrt-confirm__ok btn-primary">' +
            escapeHtml(opts.okText || __('confirm', '确定')) +
          '</button>' +
        '</div>';

      overlay.appendChild(dialog);
      document.body.appendChild(overlay);

      requestAnimationFrame(function () { overlay.classList.add('is-open'); });

      function close(result) {
        overlay.classList.remove('is-open');
        setTimeout(function () { overlay.remove(); }, 200);
        resolve(result);
      }

      dialog.querySelector('.aksrt-confirm__cancel').addEventListener('click', function () { close(false); });
      dialog.querySelector('.aksrt-confirm__ok').addEventListener('click', function () { close(true); });
      overlay.addEventListener('click', function (e) { if (e.target === overlay) close(false); });

      dialog.querySelector('.aksrt-confirm__ok').focus();
    });
  };

  // ══════════════════════════════════════════════════════════════
  //  §10.10 — scrollTopTo: smart scroll with header offset
  // ══════════════════════════════════════════════════════════════

  aksrt.scrollTopTo = function (target, extraOffset) {
    var top = 0;
    if (typeof target === 'number') {
      top = target;
    } else if (target && target.getBoundingClientRect) {
      top = target.getBoundingClientRect().top + window.pageYOffset;
    }

    var navFixed = document.querySelector('body.nav-fixed .header, .navbar.navbar-top');
    var headerOffset = navFixed ? (navFixed.offsetHeight + 20) : 0;
    top = Math.max(0, top - headerOffset - (extraOffset || 0));

    var current = window.pageYOffset;
    if (Math.abs(top - current) < 80) return;

    window.scrollTo({ top: top, behavior: 'smooth' });
  };

  // ══════════════════════════════════════════════════════════════
  //  §10.10 — loading: element-level loading overlay
  // ══════════════════════════════════════════════════════════════

  aksrt.loading = function (el, show) {
    if (!el) return;
    if (show === false) {
      var mask = el.querySelector('.aksrt-loading-mask');
      if (mask) {
        mask.classList.add('aksrt-loading-mask--out');
        setTimeout(function () { mask.remove(); }, 300);
      }
      return;
    }
    if (el.querySelector('.aksrt-loading-mask')) return;
    var pos = getComputedStyle(el).position;
    if (pos === 'static') el.style.position = 'relative';

    var mask = document.createElement('div');
    mask.className = 'aksrt-loading-mask';
    mask.innerHTML = '<svg class="aksrt-loading-mask__spinner" width="36" height="36" viewBox="0 0 36 36">' +
      '<circle cx="18" cy="18" r="15" fill="none" stroke="currentColor" stroke-width="3" stroke-dasharray="80 40" stroke-linecap="round">' +
      '<animateTransform attributeName="transform" type="rotate" from="0 18 18" to="360 18 18" dur="0.8s" repeatCount="indefinite"/>' +
      '</circle></svg>';
    el.appendChild(mask);
  };

  // ══════════════════════════════════════════════════════════════
  //  §10.11 — route: tab route + popstate
  // ══════════════════════════════════════════════════════════════

  aksrt.route = function (url, title) {
    if (!window.history || !history.pushState) return;
    history.pushState({ aksrt: true }, title || '', url);
    if (title) document.title = title;
  };

  aksrt.routeReplace = function (url, title) {
    if (!window.history || !history.replaceState) return;
    history.replaceState({ aksrt: true }, title || '', url);
    if (title) document.title = title;
  };

  // Tab route: elements with [data-route] push URL on activation
  window.addEventListener('popstate', function (e) {
    var routeTabs = document.querySelectorAll('[data-route]');
    if (!routeTabs.length) return;

    var path = window.location.pathname + window.location.search;
    routeTabs.forEach(function (tab) {
      var tabRoute = tab.getAttribute('data-route');
      var isMatch = path === tabRoute || path.indexOf(tabRoute) === 0;
      tab.classList.toggle('is-active', isMatch);
      var target = tab.getAttribute('data-route-target');
      if (target) {
        var panel = document.querySelector(target);
        if (panel) panel.classList.toggle('is-active', isMatch);
      }
    });
  });

  // ══════════════════════════════════════════════════════════════
  //  §10.11 — Declarative interactions (event delegation)
  // ══════════════════════════════════════════════════════════════

  document.addEventListener('click', function (e) {
	var target = e.target.closest('[data-close]');
    if (target) {
      e.preventDefault();
      var sel2 = target.getAttribute('data-close');
      var el2 = sel2 ? document.querySelector(sel2) : target.parentElement;
      if (el2) {
        el2.classList.remove('is-open', 'is-active', 'is-visible');
        el2.hidden = true;
      }
      return;
    }

    target = e.target.closest('[data-onclick]');
    if (target) {
      e.preventDefault();
      var sel3 = target.getAttribute('data-onclick');
      var el3 = document.querySelector(sel3);
      if (el3) el3.click();
      return;
    }
  });

  // [data-confirm] — intercept submission
  document.addEventListener('click', function (e) {
    var target = e.target.closest('[data-confirm]');
    if (!target) return;

    var msg = target.getAttribute('data-confirm');
    if (!msg) return;

    e.preventDefault();
    e.stopPropagation();

    aksrt.confirm(msg).then(function (ok) {
      if (!ok) return;
      target.removeAttribute('data-confirm');
      target.click();
      target.setAttribute('data-confirm', msg);
    });
  }, true);

  // ══════════════════════════════════════════════════════════════
  //  §10.11 — [data-action] / [ajax-action] universal buttons
  // ══════════════════════════════════════════════════════════════

  // Only these data-action values are network AJAX. UI-only actions
  // (toggle-theme, editor toolbar, download, etc.) must not hit admin-ajax.
  var DATA_ACTION_AJAX = {
    like: true,
    favorite: true,
    follow: true,
    checkin: true
  };

  document.addEventListener('click', function (e) {
    // [data-action] — like/follow/checkin with localStorage de-dup
    var btn = e.target.closest('[data-action]');
    if (btn) {
      var dataAction = btn.getAttribute('data-action') || '';
      if (!DATA_ACTION_AJAX[dataAction]) {
        // Leave non-AJAX data-action handlers (theme toggle, toolbar, download) alone.
        return;
      }
      e.preventDefault();
      handleDataAction(btn);
      return;
    }

    // [ajax-action] — general AJAX button
    btn = e.target.closest('[ajax-action]');
    if (btn) {
      e.preventDefault();
      handleAjaxAction(btn);
      return;
    }
  });

  function handleDataAction(btn) {
    if (btn.classList.contains('is-loading')) return;

    var action = btn.getAttribute('data-action');
    if (!action || !DATA_ACTION_AJAX[action]) return;

    var id = btn.getAttribute('data-id') || '';
    var storageKey = 'aksrt_action_' + action + '_' + id;

    if (action === 'like' || action === 'favorite') {
      try {
        if (localStorage.getItem(storageKey) && !btn.classList.contains('is-active')) {
          notyf(__('already_done', '已操作'), 'warning');
          return;
        }
      } catch (ex) { /* storage unavailable */ }
    }

    btn.classList.add('is-loading');

    var ajaxUrl = (window.aksrtData && aksrtData.ajaxUrl) || '/wp-admin/admin-ajax.php';
    if (!(window.aksrtData && aksrtData.nonce)) {
      btn.classList.remove('is-loading');
      notyf(__('action_failed', '操作失败'), 'danger');
      return;
    }
    var params = new URLSearchParams();
    params.set('action', 'aksrt_' + action);
    params.set('nonce', aksrtData.nonce);
    params.set('id', id);

    var extraData = btn.getAttribute('data-action-data');
    if (extraData) {
      try {
        var ed = JSON.parse(extraData);
        Object.keys(ed).forEach(function (k) { params.set(k, ed[k]); });
      } catch (ex) { /* ignore */ }
    }

    fetch(ajaxUrl, {
      method: 'POST',
      headers: { 'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8' },
      credentials: 'same-origin',
      body: params.toString()
    })
      .then(function (r) { return r.json(); })
      .then(function (json) {
        btn.classList.remove('is-loading');
        if (json && json.success) {
          var isActive = !!json.data && !!json.data.active;
          btn.classList.toggle('is-active', isActive);

          var countEl = btn.querySelector('[data-count]') || btn.querySelector('.action-count');
          if (countEl && json.data && json.data.count !== undefined) {
            countEl.textContent = String(json.data.count);
          }

          try {
            if (isActive) localStorage.setItem(storageKey, '1');
            else localStorage.removeItem(storageKey);
          } catch (ex) { /* */ }

          if (json.data && json.data.message) {
            notyf(json.data.message, 'success');
          }

          if (json.data && json.data.goto) {
            window.location.href = json.data.goto;
          }
        } else {
          notyf((json.data && json.data.message) || __('action_failed', '操作失败'), 'danger');
        }
      })
      .catch(function (err) {
        btn.classList.remove('is-loading');
        notyf(err.message || __('network_error', '网络错误'), 'danger');
      });
  }

  function handleAjaxAction(btn) {
    if (btn.classList.contains('is-loading')) return;
    btn.classList.add('is-loading');

    var action = btn.getAttribute('ajax-action');
    var ajaxUrl = (window.aksrtData && aksrtData.ajaxUrl) || '/wp-admin/admin-ajax.php';
    var params = new URLSearchParams();
    params.set('action', action);
    if (window.aksrtData && aksrtData.nonce) params.set('nonce', aksrtData.nonce);

    var form = btn.closest('form');
    if (form) {
      new FormData(form).forEach(function (v, k) { params.set(k, v); });
    }

    fetch(ajaxUrl, {
      method: 'POST',
      headers: { 'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8' },
      credentials: 'same-origin',
      body: params.toString()
    })
      .then(function (r) { return r.json(); })
      .then(function (json) {
        btn.classList.remove('is-loading');
        if (json && json.success) {
          if (json.data && json.data.show_modal) {
            window.AksrtModalRuntime.open({
              html: json.data.show_modal,
              bottom: true,
              mobileBottom: true,
              kind: 'generic',
            });
          } else if (json.data && json.data.message) {
            notyf(json.data.message, 'success');
          }
          if (json.data && json.data.goto) {
            window.location.href = json.data.goto;
          }
          if (json.data && json.data.reload) {
            window.location.reload();
          }
        } else {
          notyf((json.data && json.data.message) || __('action_failed', '操作失败'), 'danger');
        }
      })
      .catch(function (err) {
        btn.classList.remove('is-loading');
        notyf(err.message || __('network_error', '网络错误'), 'danger');
      });
  }

  // ══════════════════════════════════════════════════════════════
  //  §10.11 — Ripple (broad coverage)
  // ══════════════════════════════════════════════════════════════

  var RIPPLE_SELECTORS = '.toggle-radius,.but-ripple,.but,.btn,.btn-primary,.btn-ghost,.btn-outline,.item-thumbnail,.menu-item>a,.aksrt-ripple,.yiyan-box,.aksrt-card';

  document.addEventListener('click', function (e) {
    var target = e.target.closest(RIPPLE_SELECTORS);
    if (!target) return;
    // Markup opt-out (header publish uses class="nowave") + nav CTA chips
    if (target.classList.contains('nowave') || target.closest('.nowave')) return;
    if (target.classList.contains('navbar-cta') || target.closest('.navbar-cta')) return;
    if (target.closest('.navbar-top .navbar-but, .navbar-top .navbar-vip, .navbar-but-cluster')) return;
    if (target.querySelector('.aksrt-wave')) return;

    var rect = target.getBoundingClientRect();
    var size = Math.max(rect.width, rect.height) * 2;
    var x = e.clientX - rect.left - size / 2;
    var y = e.clientY - rect.top - size / 2;

    var wave = document.createElement('span');
    wave.className = 'aksrt-wave';
    // Must be absolute — without it the huge span expands the button box ("变长").
    wave.style.cssText = 'position:absolute;pointer-events:none;border-radius:50%;background:rgba(255,255,255,0.35);width:'
      + size + 'px;height:' + size + 'px;left:' + x + 'px;top:' + y + 'px;transform:scale(0);animation:aksrtWaveRipple .6s ease-out forwards;';

    var cs = getComputedStyle(target);
    if (cs.position === 'static') target.style.position = 'relative';
    if (cs.overflow === 'visible') target.style.overflow = 'hidden';

    target.appendChild(wave);
    setTimeout(function () {
      if (wave.parentNode) wave.parentNode.removeChild(wave);
    }, 600);
  });

  // ══════════════════════════════════════════════════════════════
  //  §10.11 — auto_fun: extended rehydration coverage
  // ══════════════════════════════════════════════════════════════

  aksrt.autoFun = function (root) {
    root = root || document;
    if (window.AksrtFrontend) {
      AksrtFrontend.rehydrate(root, 'ajax');
    }

    // Tooltips
    root.querySelectorAll('[data-tooltip]').forEach(function (el) {
      if (el.dataset.tooltipBound) return;
      el.dataset.tooltipBound = '1';
      el.addEventListener('mouseenter', function () {
        var tip = document.createElement('div');
        tip.className = 'aksrt-tooltip';
        tip.textContent = el.getAttribute('data-tooltip');
        document.body.appendChild(tip);
        var rect = el.getBoundingClientRect();
        tip.style.left = (rect.left + rect.width / 2 - tip.offsetWidth / 2) + 'px';
        tip.style.top = (rect.top - tip.offsetHeight - 8 + window.pageYOffset) + 'px';
        el._aksrtTooltip = tip;
      });
      el.addEventListener('mouseleave', function () {
        if (el._aksrtTooltip) { el._aksrtTooltip.remove(); el._aksrtTooltip = null; }
      });
    });

    // Countdowns
    root.querySelectorAll('[data-countdown]').forEach(function (el) {
      if (el.dataset.countdownBound) return;
      el.dataset.countdownBound = '1';
      var end = parseInt(el.getAttribute('data-countdown'), 10);
      if (!end) return;
      var iv = setInterval(function () {
        var left = Math.max(0, end - Math.floor(Date.now() / 1000));
        if (left <= 0) { clearInterval(iv); el.textContent = '00:00'; return; }
        var m = Math.floor(left / 60);
        var s = left % 60;
        el.textContent = (m < 10 ? '0' : '') + m + ':' + (s < 10 ? '0' : '') + s;
      }, 1000);
    });
  };

  // ══════════════════════════════════════════════════════════════
  //  Helpers
  // ══════════════════════════════════════════════════════════════

  function escapeHtml(str) {
    if (!str) return '';
    return String(str)
      .replace(/&/g, '&amp;')
      .replace(/</g, '&lt;')
      .replace(/>/g, '&gt;')
      .replace(/"/g, '&quot;');
  }

  // ── DOMContentLoaded ──

  function initRuntime() {
    aksrt.autoFun(document);
  }

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

})();