/**
 * AKSRT messages center interactions.
 *
 * @package AKSRT
 */
(function () {
  'use strict';

  var nonce = typeof aksrtData !== 'undefined' ? aksrtData.nonce : '';
  var ajaxUrl = typeof aksrtData !== 'undefined' ? aksrtData.ajaxUrl : '/wp-admin/admin-ajax.php';
  var pollTimer = null;
  var pollInterval = 60000;

  function post(action, data) {
    var body = new URLSearchParams({ action: action, nonce: nonce });
    if (data) {
      Object.keys(data).forEach(function (key) {
        var value = data[key];
        if (Array.isArray(value)) {
          value.forEach(function (item) {
            body.append(key + '[]', item);
          });
          return;
        }
        body.append(key, value);
      });
    }

    return fetch(ajaxUrl, { method: 'POST', body: body, credentials: 'same-origin' })
      .then(function (response) { return response.json(); });
  }

  document.addEventListener('click', function (event) {
    var item = event.target.closest('.messages-nav__item[data-type]');
    if (!item) return;

    event.preventDefault();
    var url = new URL(window.location.href);
    url.searchParams.set('msg_type', item.dataset.type);
    url.searchParams.delete('msg_page');
    window.location.href = url.toString();
  });

  document.addEventListener('click', function (event) {
    var button = event.target.closest('.js-msg-mark-read');
    if (!button) return;

    var id = button.dataset.id;
    var msgItem = button.closest('.message-item');
    post('aksrt_mark_notification_read', { notification_id: id }).then(function (result) {
      if (!result.success) return;

      if (msgItem) {
        msgItem.classList.remove('is-unread');
      }
      button.remove();
      updateBadges(result.data && result.data.unread !== undefined ? result.data.unread : countUnread());
    });
  });

  document.addEventListener('click', function (event) {
    var button = event.target.closest('.js-msg-delete');
    if (!button) return;

    var id = button.dataset.id;
    var msgItem = button.closest('.message-item');
    post('aksrt_delete_notification', { notification_id: id }).then(function (result) {
      if (!result.success) return;

      if (msgItem) {
        msgItem.style.opacity = '0';
        msgItem.style.transform = 'translateX(20px)';
        msgItem.style.transition = 'all 0.2s';
        setTimeout(function () { msgItem.remove(); }, 200);
      }

      updateBadges(result.data && result.data.unread !== undefined ? result.data.unread : countUnread());
      checkEmpty();
    });
  });

  document.addEventListener('click', function (event) {
    var button = event.target.closest('.js-msg-mark-all-read');
    if (!button) return;

    post('aksrt_mark_notification_read', { mark_all: '1' }).then(function (result) {
      if (!result.success) return;

      document.querySelectorAll('.message-item.is-unread').forEach(function (item) {
        item.classList.remove('is-unread');
      });
      document.querySelectorAll('.js-msg-mark-read').forEach(function (item) {
        item.remove();
      });
      updateBadges(0);
    });
  });

  document.addEventListener('click', function (event) {
    var button = event.target.closest('.js-msg-clear-read');
    if (!button) return;

    var readItems = document.querySelectorAll('.message-item:not(.is-unread)');
    var ids = [];
    readItems.forEach(function (item) {
      var id = item.dataset.notificationId;
      if (id) ids.push(id);
    });
    if (!ids.length) return;

    post('aksrt_delete_notifications', { notification_ids: ids }).then(function (result) {
      if (!result.success) return;

      readItems.forEach(function (item) {
        item.style.opacity = '0';
        item.style.transform = 'translateX(20px)';
        item.style.transition = 'all 0.2s';
        setTimeout(function () { item.remove(); }, 200);
      });
      setTimeout(checkEmpty, 250);
      updateBadges(result.data && result.data.unread !== undefined ? result.data.unread : countUnread());
    });
  });

  function countUnread() {
    return document.querySelectorAll('.message-item.is-unread').length;
  }

  function updateBadges(unread) {
    var nextUnread = unread === undefined ? countUnread() : unread;

    document.querySelectorAll('.messages-nav__badge[data-type="unread"]').forEach(function (badge) {
      badge.textContent = String(nextUnread);
      badge.dataset.count = String(nextUnread);
      badge.style.display = nextUnread > 0 ? '' : 'none';
    });

    // Numeric badge inside the user dropdown only — never target the pure avatar
    // .nav-user__dot.aksrt-notification-badge (no textContent on a dot indicator).
    var headerBadge = document.querySelector('.aksrt-notification-badge');
    if (headerBadge) {
      headerBadge.textContent = String(nextUnread);
      headerBadge.style.display = nextUnread > 0 ? '' : 'none';
    }

    var avatarDot = document.querySelector('.nav-user__dot');
    if (avatarDot) {
      avatarDot.style.display = nextUnread > 0 ? '' : 'none';
    }
  }

  function checkEmpty() {
    var list = document.querySelector('.messages-list');
    if (list && list.children.length === 0) {
      list.outerHTML = '<div class="messages-empty"><span class="messages-empty__icon"><i class="fas fa-bell-slash"></i></span><p class="messages-empty__text">暂无消息</p></div>';
    }
  }

  function startPolling() {
    pollTimer = setInterval(function () {
      post('aksrt_check_new_notifications', {}).then(function (result) {
        if (!result.success || !result.data) return;
        if (result.data.unread !== undefined) {
          updateBadges(result.data.unread);
          return;
        }
        if (result.data.count !== undefined) {
          updateBadges(result.data.count);
        }
      }).catch(function () {});
    }, pollInterval);
  }

  startPolling();
})();