/** 创作分成：勾选计数、全选、批量操作（结算 / 删除）、二次确认 + 防重复提交。仅本页入队。 */
(function () {
  'use strict';

  var root = document.querySelector('.aksrt-income-page');
  if (!root) return;

  var checkAll = root.querySelector('[data-aksrt-income-check-all]');
  var checks = Array.from(root.querySelectorAll('[data-aksrt-income-check]'));
  var bulkAction = root.querySelector('[data-aksrt-income-bulk-action]');
  var bulkSubmit = root.querySelector('[data-aksrt-income-bulk-submit]');
  var selected = root.querySelector('[data-aksrt-income-selected]');
  var emptyText = selected ? selected.textContent : '';

  function checkedCount() {
    return checks.filter(function (box) { return box.checked; }).length;
  }

  function sync() {
    var count = checkedCount();
    if (bulkSubmit) bulkSubmit.disabled = count === 0 || !bulkAction || bulkAction.value === '';
    if (selected) {
      selected.textContent = count > 0 ? '已选 ' + count + ' 条' : emptyText;
      selected.classList.toggle('is-active', count > 0);
    }
    if (checkAll && !checkAll.disabled) {
      checkAll.checked = count > 0 && count === checks.length;
      checkAll.indeterminate = count > 0 && count < checks.length;
    }
  }

  if (checkAll) {
    checkAll.addEventListener('change', function () {
      checks.forEach(function (box) { box.checked = checkAll.checked; });
      sync();
    });
  }
  checks.forEach(function (box) { box.addEventListener('change', sync); });
  if (bulkAction) bulkAction.addEventListener('change', sync);
  sync();

  /** 单行表单的确认文案在 form 上；批量表单按所选操作取 option 上的文案。 */
  function confirmMessage(form) {
    if (bulkAction && form.contains(bulkAction)) {
      var option = bulkAction.selectedOptions[0];
      return option ? option.getAttribute('data-confirm') : '';
    }
    return form.getAttribute('data-aksrt-confirm');
  }

  root.addEventListener('submit', function (event) {
    var form = event.target.closest('form');
    if (!form) return;
    if (form.dataset.submitting) {
      event.preventDefault();
      return;
    }
    var message = confirmMessage(form);
    if (message && !window.confirm(message.replace('{count}', String(checkedCount())))) {
      event.preventDefault();
      return;
    }
    if (form.method.toLowerCase() !== 'post') return;
    form.dataset.submitting = '1';
    // 延后禁用：同步禁用 submit 按钮会让部分浏览器丢掉这次提交。
    setTimeout(function () {
      form.querySelectorAll('button[type="submit"]').forEach(function (button) { button.disabled = true; });
    }, 0);
  });

  // bfcache 返回时恢复按钮与勾选计数，避免整页停在禁用态。
  window.addEventListener('pageshow', function (event) {
    if (!event.persisted) return;
    root.querySelectorAll('form[data-submitting]').forEach(function (form) {
      delete form.dataset.submitting;
      form.querySelectorAll('button[type="submit"]').forEach(function (button) { button.disabled = false; });
    });
    sync();
  });
})();