/**
 * 用户会员后台页（users.php?page=aksrt_user_vip）的调整弹窗。
 * - 行内「调整」：单人打开弹窗；工具栏「批量调整」：对勾选用户打开弹窗；
 * - 按操作类型切换字段，隐藏区域的输入被禁用，不参与校验与提交；
 * - 单人时按用户状态禁用不可用的操作（延长 / 恢复）；
 * - 提交后禁用按钮防重复提交。
 * 标记由 src/Admin/Native/UsersMenusVipView.php 输出。
 */
(function () {
  'use strict';

  var dialog = document.getElementById('aksrt-vip-dialog');
  if (!dialog || typeof dialog.showModal !== 'function') return;

  var form = dialog.querySelector('form');
  var ids = dialog.querySelector('[data-aksrt-vip-ids]');
  var title = dialog.querySelector('[data-aksrt-vip-title]');
  var target = dialog.querySelector('[data-aksrt-vip-target]');
  var opHint = dialog.querySelector('[data-aksrt-vip-op-hint]');
  var bulkNote = dialog.querySelector('[data-aksrt-vip-bulk-note]');
  var submit = dialog.querySelector('[data-aksrt-vip-submit]');
  var permanent = dialog.querySelector('[data-aksrt-vip-permanent]');
  var dateInput = dialog.querySelector('[data-aksrt-vip-date]');
  var levelSelect = dialog.querySelector('[data-aksrt-vip-level]');
  var radios = dialog.querySelectorAll('input[name="vip_operation"]');
  var panes = dialog.querySelectorAll('[data-aksrt-vip-pane]');
  var bulkButton = document.querySelector('[data-aksrt-vip-bulk]');
  var selection = document.querySelector('[data-aksrt-vip-selection]');
  var checkAll = document.querySelector('[data-aksrt-vip-check-all]');
  var checks = document.querySelectorAll('.aksrt-vip-check');

  function t(key, value) {
    var text = dialog.getAttribute('data-i18n-' + key) || '';
    return value === undefined ? text : text.replace(/%[sd]/, String(value));
  }

  function operation() {
    var checked = dialog.querySelector('input[name="vip_operation"]:checked');
    return checked ? checked.value : 'set';
  }

  function sync() {
    var op = operation();
    panes.forEach(function (pane) {
      var on = pane.getAttribute('data-aksrt-vip-pane') === op;
      pane.hidden = !on;
      pane.querySelectorAll('input, select').forEach(function (field) { field.disabled = !on; });
    });
    if (op === 'set' && dateInput) {
      dateInput.disabled = permanent.checked;
      dateInput.required = !permanent.checked;
    }
    submit.classList.toggle('is-danger', op === 'disable');
    submit.classList.toggle('button-primary', op !== 'disable');
  }

  function setOperation(value) {
    radios.forEach(function (radio) { radio.checked = radio.value === value; });
    sync();
  }

  function setAvailability(row) {
    var hints = [];
    radios.forEach(function (radio) {
      var off = false;
      if (row && radio.value === 'extend' && row.getAttribute('data-can-extend') !== '1') {
        off = true;
        hints.push(t('extend-off'));
      }
      if (row && radio.value === 'restore' && row.getAttribute('data-can-restore') !== '1') {
        off = true;
        hints.push(t('restore-off'));
      }
      radio.disabled = off;
      radio.closest('label').classList.toggle('is-disabled', off);
    });
    opHint.textContent = hints.join(' ');
    opHint.hidden = hints.length === 0;
  }

  function open(rows, bulk) {
    ids.textContent = '';
    rows.forEach(function (row) {
      var input = document.createElement('input');
      input.type = 'hidden';
      input.name = 'user_ids[]';
      input.value = row.getAttribute('data-user-id');
      ids.appendChild(input);
    });
    form.reset();
    if (bulk) {
      title.textContent = t('bulk', rows.length);
      target.textContent = rows.map(function (row) { return row.getAttribute('data-user-name'); }).slice(0, 8).join('、') + (rows.length > 8 ? ' …' : '');
      setAvailability(null);
      bulkNote.textContent = t('bulk-note');
      bulkNote.hidden = false;
    } else {
      var row = rows[0];
      title.textContent = t('single', row.getAttribute('data-user-name'));
      target.textContent = '#' + row.getAttribute('data-user-id') + ' · ' + row.getAttribute('data-current');
      if (levelSelect) levelSelect.value = row.getAttribute('data-level') || '1';
      setAvailability(row);
      bulkNote.hidden = true;
    }
    setOperation('set');
    submit.disabled = false;
    dialog.showModal();
    var reason = form.querySelector('input[name="reason"]');
    if (reason) reason.focus();
  }

  function selected() {
    return Array.prototype.filter.call(checks, function (check) { return check.checked; });
  }

  function syncSelection() {
    var count = selected().length;
    if (bulkButton) bulkButton.disabled = count === 0;
    if (selection) {
      selection.hidden = count === 0;
      selection.textContent = t('selected', count);
    }
    if (checkAll) {
      checkAll.checked = count > 0 && count === checks.length;
      checkAll.indeterminate = count > 0 && count < checks.length;
    }
  }

  document.querySelectorAll('[data-aksrt-vip-edit]').forEach(function (button) {
    button.addEventListener('click', function () { open([button], false); });
  });
  if (bulkButton) {
    bulkButton.addEventListener('click', function () {
      var rows = selected();
      if (rows.length) open(rows, true);
    });
  }
  if (checkAll) {
    checkAll.addEventListener('change', function () {
      checks.forEach(function (check) { check.checked = checkAll.checked; });
      syncSelection();
    });
  }
  checks.forEach(function (check) { check.addEventListener('change', syncSelection); });

  radios.forEach(function (radio) { radio.addEventListener('change', sync); });
  if (permanent) permanent.addEventListener('change', sync);

  dialog.querySelectorAll('[data-aksrt-vip-close]').forEach(function (button) {
    button.addEventListener('click', function () { dialog.close(); });
  });
  // 点击遮罩（dialog 自身而非内容区）关闭。
  dialog.addEventListener('click', function (event) {
    if (event.target === dialog) dialog.close();
  });
  form.addEventListener('submit', function () {
    submit.disabled = true;
  });

  syncSelection();
})();