(function () {
  'use strict';

  var I = function () { return window.AdminI18n; };

  function itemDataset(it) {
    if (!it.dataset) return '';
    return Object.keys(it.dataset).map(function (k) {
      return ' data-' + k + '="' + I().esc(it.dataset[k]) + '"';
    }).join('');
  }

  function menuItemBtn(it) {
    if (it.disabled) {
      return '<button type="button" class="soon-admin-action-menu__item" disabled title="' +
        I().esc(it.label) + '">' + I().esc(it.label) + '</button>';
    }
    var cls = 'soon-admin-action-menu__item' + (it.className ? ' ' + it.className : '');
    return '<button type="button" class="' + cls + '" data-action="' + I().esc(it.action) + '"' +
      itemDataset(it) + '>' + I().esc(it.label) + '</button>';
  }

  function inlineBtn(it) {
    if (it.disabled) {
      return '<button type="button" class="soon-btn soon-btn--xs soon-btn--ghost soon-admin-row-actions__btn" disabled title="' +
        I().esc(it.label) + '">' + I().esc(it.label) + '</button>';
    }
    return '<button type="button" class="soon-btn soon-btn--xs soon-btn--ghost soon-admin-row-actions__btn" data-action="' +
      I().esc(it.action) + '"' + itemDataset(it) + '>' + I().esc(it.label) + '</button>';
  }

  function positionFloatingPanel(menu) {
    var toggle = menu.querySelector('.soon-admin-action-menu__toggle');
    var panel = menu.querySelector('.soon-admin-action-menu__panel');
    if (!toggle || !panel) return;
    panel.classList.add('soon-admin-action-menu__panel--floating');
    panel.style.display = 'block';
    panel.style.visibility = 'hidden';
    var r = toggle.getBoundingClientRect();
    var panelW = panel.offsetWidth;
    var panelH = panel.offsetHeight;
    var gap = 4;
    var left = r.right - panelW;
    if (left < 8) left = 8;
    if (left + panelW > window.innerWidth - 8) left = window.innerWidth - panelW - 8;
    var top = r.bottom + gap;
    if (top + panelH > window.innerHeight - 8) {
      top = Math.max(8, r.top - panelH - gap);
    }
    panel.style.left = left + 'px';
    panel.style.top = top + 'px';
    panel.style.visibility = '';
  }

  function actionMenu(menuId, items) {
    var btns = items.map(menuItemBtn).join('');
    return '<div class="soon-admin-action-menu" data-menu="' + I().esc(menuId) + '">' +
      '<button type="button" class="soon-btn soon-btn--xs soon-btn--ghost soon-admin-action-menu__toggle">操作 ▾</button>' +
      '<div class="soon-admin-action-menu__panel">' + btns + '</div></div>';
  }

  function rowActions(menuId, inlineItems, moreItems) {
    var inline = (inlineItems || []).map(inlineBtn).join('');
    var more = (moreItems || []).map(menuItemBtn).join('');
    if (!more) {
      return '<div class="soon-admin-row-actions" data-menu="' + I().esc(menuId) + '">' + inline + '</div>';
    }
    return '<div class="soon-admin-row-actions" data-menu="' + I().esc(menuId) + '">' + inline +
      '<div class="soon-admin-action-menu soon-admin-action-menu--more">' +
      '<button type="button" class="soon-btn soon-btn--xs soon-btn--ghost soon-admin-action-menu__toggle">更多 ▾</button>' +
      '<div class="soon-admin-action-menu__panel">' + more + '</div></div></div>';
  }

  function closeAll() {
    document.querySelectorAll('.soon-admin-action-menu.is-open').forEach(function (m) {
      m.classList.remove('is-open');
      resetPanelStyle(m.querySelector('.soon-admin-action-menu__panel'));
    });
  }

  function bindActionButtons(container, handler, selector) {
    container.querySelectorAll(selector).forEach(function (btn) {
      if (btn.disabled) return;
      btn.onclick = function (e) {
        e.stopPropagation();
        closeAll();
        if (typeof handler === 'function') handler(btn.dataset.action, btn);
      };
    });
  }

  function resetPanelStyle(panel) {
    if (!panel) return;
    panel.style.display = '';
    panel.style.left = '';
    panel.style.top = '';
    panel.style.visibility = '';
  }

  function bindHoverMore(container) {
    container.querySelectorAll('.soon-admin-action-menu--more').forEach(function (menu) {
      var hideTimer = null;
      var panel = menu.querySelector('.soon-admin-action-menu__panel');
      function openMenu() {
        if (hideTimer) {
          clearTimeout(hideTimer);
          hideTimer = null;
        }
        closeAll();
        positionFloatingPanel(menu);
        menu.classList.add('is-open');
      }
      function scheduleClose() {
        hideTimer = setTimeout(function () {
          menu.classList.remove('is-open');
          resetPanelStyle(panel);
        }, 180);
      }
      function cancelClose() {
        if (hideTimer) {
          clearTimeout(hideTimer);
          hideTimer = null;
        }
      }
      menu.addEventListener('mouseenter', openMenu);
      menu.addEventListener('mouseleave', scheduleClose);
      if (panel) {
        panel.addEventListener('mouseenter', cancelClose);
        panel.addEventListener('mouseleave', scheduleClose);
      }
    });
  }

  function bind(container, handler) {
    if (!container) return;
    bindActionButtons(container, handler, '.soon-admin-row-actions__btn[data-action]');
    container.querySelectorAll('.soon-admin-action-menu__toggle').forEach(function (btn) {
      var menu = btn.closest('.soon-admin-action-menu');
      if (menu && menu.classList.contains('soon-admin-action-menu--more')) return;
      btn.onclick = function (e) {
        e.stopPropagation();
        var wasOpen = menu.classList.contains('is-open');
        closeAll();
        if (!wasOpen) {
          positionFloatingPanel(menu);
          menu.classList.add('is-open');
        }
      };
    });
    bindActionButtons(container, handler, '.soon-admin-action-menu__item[data-action]');
    bindHoverMore(container);
  }

  if (!window._soonAdminMenuDocBound) {
    window._soonAdminMenuDocBound = true;
    document.addEventListener('click', closeAll);
    window.addEventListener('scroll', closeAll, true);
    window.addEventListener('resize', closeAll);
  }

  window.AdminMenu = {
    actionMenu: actionMenu,
    rowActions: rowActions,
    bind: bind,
    closeAll: closeAll,
    positionFloatingPanel: positionFloatingPanel,
  };
})();