/** 优惠码：新建/批量生成弹窗、类型与范围联动、防重复提交、点击复制。仅本页入队。 */
(function () {
  'use strict';

  var root = document.querySelector('.jio-coupons-page');
  if (!root) return;
  var toast = root.querySelector('[data-jio-coupon-toast]');
  var toastTimer;
  var forms = Array.from(root.querySelectorAll('[data-jio-coupon-form]'));

  function notify(key) {
    if (!toast) return;
    clearTimeout(toastTimer);
    toast.textContent = toast.getAttribute('data-' + key);
    toast.classList.add('is-visible');
    toastTimer = setTimeout(function () { toast.classList.remove('is-visible'); }, 3000);
  }

  /** 类型切换面值的步长/上限与单位；「全部商品」时范围 ID 禁用，否则必填。 */
  function syncForm(form) {
    var type = form.elements.type;
    var value = form.elements.value;
    var unit = form.querySelector('[data-jio-coupon-unit]');
    if (type && value) {
      var percent = type.value === 'percent';
      value.step = percent ? '1' : '0.01';
      if (percent) value.max = '100'; else value.removeAttribute('max');
      if (unit) unit.textContent = unit.getAttribute(percent ? 'data-percent' : 'data-fixed');
    }
    var scope = form.elements.scope_type;
    var ids = form.elements.scope_ids;
    if (scope && ids) {
      var all = scope.value === '';
      ids.disabled = all;
      ids.required = !all;
    }
  }

  function lockScroll() {
    document.documentElement.classList.toggle('jio-coupons-modal-open', !!root.querySelector('dialog[open]'));
  }

  root.querySelectorAll('.jio-coupon-dialog').forEach(function (dialog) {
    if (typeof dialog.showModal !== 'function') return;
    var opener = null;
    var startedOutside = false;
    var form = dialog.querySelector('form');

    function outside(event) {
      var rect = dialog.getBoundingClientRect();
      return event.clientX < rect.left || event.clientX > rect.right || event.clientY < rect.top || event.clientY > rect.bottom;
    }
    function requestClose() {
      if (!form.dataset.submitting) dialog.close();
    }

    root.querySelectorAll('[data-jio-dialog-open="' + dialog.id + '"]').forEach(function (button) {
      button.addEventListener('click', function () {
        opener = button;
        syncForm(form);
        dialog.showModal();
        lockScroll();
      });
    });
    dialog.querySelectorAll('[data-jio-dialog-close]').forEach(function (button) {
      button.addEventListener('click', requestClose);
    });
    dialog.addEventListener('pointerdown', function (event) {
      startedOutside = event.target === dialog && outside(event);
    });
    dialog.addEventListener('click', function (event) {
      if (startedOutside && event.target === dialog && outside(event)) requestClose();
      startedOutside = false;
    });
    dialog.addEventListener('cancel', function (event) {
      if (form.dataset.submitting) event.preventDefault();
    });
    dialog.addEventListener('close', function () {
      lockScroll();
      if (opener && opener.isConnected) opener.focus();
      opener = null;
    });
  });

  forms.forEach(function (form) {
    var submit = form.querySelector('[data-jio-coupon-submit]');
    if (submit) submit.setAttribute('data-idle-label', submit.textContent);
    form.addEventListener('change', function () { syncForm(form); });
    form.addEventListener('submit', function (event) {
      if (form.dataset.submitting) {
        event.preventDefault();
        return;
      }
      form.dataset.submitting = '1';
      if (submit) {
        submit.textContent = form.getAttribute('data-busy-label');
        // 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 () { submit.disabled = true; }, 0);
      }
    });
    syncForm(form);
  });

  root.addEventListener('click', async function (event) {
    var button = event.target.closest('[data-clipboard-text]');
    if (!button) return;
    var value = button.getAttribute('data-clipboard-text');
    try {
      if (navigator.clipboard && window.isSecureContext) {
        await navigator.clipboard.writeText(value);
      } else {
        var input = document.createElement('textarea');
        input.value = value;
        input.className = 'screen-reader-text';
        root.appendChild(input);
        input.select();
        var copied = false;
        try {
          copied = document.execCommand('copy');
        } finally {
          input.remove();
          button.focus();
        }
        if (!copied) throw new Error('copy');
      }
      notify('copied');
    } catch (error) {
      notify('copy-failed');
    }
  });

  // bfcache 返回时恢复按钮，避免表单停在提交中状态。
  window.addEventListener('pageshow', function () {
    forms.forEach(function (form) {
      var submit = form.querySelector('[data-jio-coupon-submit]');
      delete form.dataset.submitting;
      if (submit) {
        submit.disabled = false;
        submit.textContent = submit.getAttribute('data-idle-label');
      }
      syncForm(form);
    });
    lockScroll();
  });
})();