进行了一些小修复

assets/js/admin-post-extension.js

@@ -0,0 +1,123 @@
+(function ($) {
+  'use strict';
+
+  var root = document.querySelector('[data-aksrt-post-extension]');
+  if (!root || !window.wp || !wp.media) return;
+
+  function openMedia(button) {
+    var wrap = button.closest('.aksrt-post-extension__upload');
+    var input = wrap && wrap.querySelector('[data-media-input]');
+    if (!input) return;
+
+    var library = button.getAttribute('data-library') || 'image';
+    var frame = wp.media({
+      title: library === 'video' ? '选择视频' : '选择图像',
+      library: { type: library },
+      multiple: false
+    });
+    frame.on('select', function () {
+      var item = frame.state().get('selection').first().toJSON();
+      input.value = item.url || '';
+      input.dispatchEvent(new Event('change', { bubbles: true }));
+    });
+    frame.open();
+  }
+
+  function renderGallery() {
+    var input = root.querySelector('[data-gallery-input]');
+    var preview = root.querySelector('[data-gallery-preview]');
+    if (!input || !preview) return;
+
+    preview.innerHTML = '';
+    var ids = input.value.split(',').map(function (id) { return parseInt(id, 10); }).filter(Boolean);
+    ids.forEach(function (id) {
+      wp.media.attachment(id).fetch().then(function () {
+        var data = wp.media.attachment(id).toJSON();
+        var img = document.createElement('img');
+        img.src = (data.sizes && data.sizes.thumbnail ? data.sizes.thumbnail.url : data.url) || '';
+        img.alt = data.alt || '';
+        preview.appendChild(img);
+      });
+    });
+  }
+
+  function openGallery() {
+    var input = root.querySelector('[data-gallery-input]');
+    if (!input) return;
+    var frame = wp.media({ title: '添加图像', library: { type: 'image' }, multiple: true });
+    frame.on('open', function () {
+      input.value.split(',').map(function (id) { return parseInt(id, 10); }).filter(Boolean).forEach(function (id) {
+        frame.state().get('selection').add(wp.media.attachment(id));
+      });
+    });
+    frame.on('select', function () {
+      input.value = frame.state().get('selection').map(function (item) { return item.id; }).join(',');
+      renderGallery();
+    });
+    frame.open();
+  }
+
+  function syncVideoDependencies() {
+    var input = root.querySelector('input[name="aksrt_post_extension[featured_video]"]');
+    root.querySelectorAll('[data-video-dependent]').forEach(function (field) {
+      field.hidden = !input || !input.value.trim();
+    });
+  }
+
+  root.addEventListener('click', function (event) {
+    var mediaButton = event.target.closest('[data-media-select]');
+    if (mediaButton) {
+      event.preventDefault();
+      openMedia(mediaButton);
+      return;
+    }
+
+    var clear = event.target.closest('[data-media-clear]');
+    if (clear) {
+      event.preventDefault();
+      var wrap = clear.closest('.aksrt-post-extension__upload');
+      var input = wrap && wrap.querySelector('[data-media-input]');
+      if (input) {
+        input.value = '';
+        input.dispatchEvent(new Event('change', { bubbles: true }));
+      }
+      return;
+    }
+
+    if (event.target.closest('[data-gallery-select]')) {
+      event.preventDefault();
+      openGallery();
+      return;
+    }
+
+    if (event.target.closest('[data-gallery-clear]')) {
+      event.preventDefault();
+      var galleryInput = root.querySelector('[data-gallery-input]');
+      if (galleryInput) galleryInput.value = '';
+      renderGallery();
+      return;
+    }
+
+    if (event.target.closest('[data-episode-add]')) {
+      event.preventDefault();
+      var list = root.querySelector('[data-episode-list]');
+      var template = root.querySelector('[data-episode-template]');
+      if (!list || !template) return;
+      var index = list.querySelectorAll('[data-episode-row]').length;
+      list.insertAdjacentHTML('beforeend', template.innerHTML.replaceAll('__INDEX__', String(index)));
+      return;
+    }
+
+    var remove = event.target.closest('[data-episode-remove]');
+    if (remove) {
+      event.preventDefault();
+      var row = remove.closest('[data-episode-row]');
+      if (row) row.remove();
+    }
+  });
+
+  root.addEventListener('input', syncVideoDependencies);
+  root.addEventListener('change', syncVideoDependencies);
+  renderGallery();
+  syncVideoDependencies();
+})(jQuery);