fix(core): some comment editor ux enhancements (#13126)

fix AF-2726, AF-2729

#### PR Dependency Tree


* **PR #13126** 👈

This tree was auto-generated by
[Charcoal](https://github.com/danerwilliams/charcoal)

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

* **New Features**
* Added drag-and-drop support for file attachments in the comment
editor.
* Improved user feedback with notifications and toasts when downloading
attachments.

* **Bug Fixes**
  * Enhanced error handling and reporting for attachment downloads.

* **Improvements**
* Optimized file download process for same-origin resources to improve
performance.
* Updated default comment filter to show all comments, not just those
for the current mode.

* **Documentation**
* Updated English localization to provide clearer instructions when no
comments are present.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->


#### PR Dependency Tree


* **PR #13126** 👈

This tree was auto-generated by
[Charcoal](https://github.com/danerwilliams/charcoal)

packages/frontend/core/src/components/comment/comment-editor/index.tsx

@@ -1,8 +1,9 @@
-import { IconButton, notify } from '@affine/component';
+import { IconButton, notify, toast } from '@affine/component';
 import { LitDocEditor, type PageEditor } from '@affine/core/blocksuite/editors';
 import { SnapshotHelper } from '@affine/core/modules/comment/services/snapshot-helper';
 import type { CommentAttachment } from '@affine/core/modules/comment/types';
 import { PeekViewService } from '@affine/core/modules/peek-view';
+import { downloadResourceWithUrl } from '@affine/core/utils/resource';
 import { DebugLogger } from '@affine/debug';
 import { getAttachmentFileIconRC } from '@blocksuite/affine/components/icons';
 import { type RichText, selectTextModel } from '@blocksuite/affine/rich-text';
@@ -80,16 +81,6 @@ export interface CommentEditorRef {
   focus: () => void;
 }
 
-const download = (url: string, name: string) => {
-  const element = document.createElement('a');
-  element.setAttribute('download', name);
-  element.setAttribute('href', url);
-  element.style.display = 'none';
-  document.body.append(element);
-  element.click();
-  element.remove();
-};
-
 // todo: get rid of circular data changes
 const useSnapshotDoc = (
   defaultSnapshotOrDoc: DocSnapshot | Store,
@@ -313,6 +304,28 @@ export const CommentEditor = forwardRef<CommentEditorRef, CommentEditorProps>(
       [addAttachments]
     );
 
+    const handleDragOver = useCallback(
+      (e: React.DragEvent) => {
+        if (readonly) return;
+        // Prevent default to allow drop
+        e.preventDefault();
+      },
+      [readonly]
+    );
+
+    const handleDrop = useCallback(
+      (e: React.DragEvent) => {
+        if (readonly) return;
+        e.preventDefault();
+        e.stopPropagation();
+        const files = Array.from(e.dataTransfer?.files ?? []);
+        if (files.length) {
+          addAttachments(files);
+        }
+      },
+      [addAttachments, readonly]
+    );
+
     const openFilePicker = useAsyncCallback(async () => {
       if (isUploadDisabled) return;
       const files = await openFilesWith('Any');
@@ -382,8 +395,6 @@ export const CommentEditor = forwardRef<CommentEditorRef, CommentEditorProps>(
         if (!attachments) return;
         const att = attachments[index];
         if (!att) return;
-        const url = att.url || att.localUrl;
-        if (!url) return;
         if (isImageAttachment(att)) {
           // translate attachment index to image index
           const imageAttachments = attachments.filter(isImageAttachment);
@@ -391,13 +402,19 @@ export const CommentEditor = forwardRef<CommentEditorRef, CommentEditorProps>(
           if (imageIndex >= 0) {
             handleImagePreview(imageIndex);
           }
-        } else if (att.url || att.localUrl) {
+        } else if (att.url) {
           // todo: open attachment preview. for now, just download it
-          download(url, att.filename ?? att.file?.name ?? 'attachment');
-          notify({
-            title: 'Downloading attachment',
-            message: 'The attachment is being downloaded to your computer.',
+          downloadResourceWithUrl(
+            att.url,
+            att.filename ?? att.file?.name ?? 'attachment'
+          ).catch(e => {
+            console.error('Failed to download attachment', e);
+            notify.error({
+              title: 'Failed to download attachment',
+              message: e.message,
+            });
           });
+          toast('The attachment is being downloaded to your computer.');
         }
       },
       [attachments, handleImagePreview]
@@ -538,6 +555,8 @@ export const CommentEditor = forwardRef<CommentEditorRef, CommentEditorProps>(
         onClick={readonly ? undefined : handleClickEditor}
         onKeyDown={handleKeyDown}
         onPaste={handlePaste}
+        onDragOver={handleDragOver}
+        onDrop={handleDrop}
         data-readonly={!!readonly}
         className={clsx(styles.container, 'comment-editor-viewport')}
       >

packages/frontend/core/src/components/comment/sidebar/index.tsx

@@ -596,7 +596,7 @@ const CommentList = ({ entity }: { entity: DocCommentEntity }) => {
   const [filterState, setFilterState] = useState<CommentFilterState>({
     showResolvedComments: false,
     onlyMyReplies: false,
-    onlyCurrentMode: true,
+    onlyCurrentMode: false,
   });
 
   const onFilterChange = useCallback(

packages/frontend/core/src/utils/resource.ts

@@ -33,7 +33,22 @@ export async function downloadBlob(blob: Blob, filename: string) {
   URL.revokeObjectURL(blobUrl);
 }
 
+export function downloadFile(url: string, filename: string) {
+  const a = document.createElement('a');
+  a.href = url;
+  a.download = filename;
+  a.target = '_blank';
+  a.click();
+}
+
 export async function downloadResourceWithUrl(url: string, filename: string) {
+  // 1. if url is not same origin, fetch it to blob and download it
+  // 2. otherwise, download it directly
+  const sameOrigin = new URL(url).origin === window.location.origin;
+  if (sameOrigin) {
+    downloadFile(url, filename);
+    return;
+  }
   // given input url may not have correct mime type
   const blob = await resourceUrlToBlob(url);
   if (!blob) return;

packages/frontend/i18n/src/i18n.gen.ts

@@ -8239,7 +8239,7 @@ export function useAFFiNEI18N(): {
       */
     ["com.affine.comment.comments"](): string;
     /**
-      * `No comments yet`
+      * `No comments yet, select content to add comment to`
       */
     ["com.affine.comment.no-comments"](): string;
     /**

packages/frontend/i18n/src/resources/en.json

@@ -2067,7 +2067,7 @@
   "com.affine.migration-all-docs-notification.error": "Migration failed: {{errorMessage}}",
   "com.affine.migration-all-docs-notification.button": "Migrate data",
   "com.affine.comment.comments": "Comments",
-  "com.affine.comment.no-comments": "No comments yet",
+  "com.affine.comment.no-comments": "No comments yet, select content to add comment to",
   "com.affine.comment.delete.confirm.title": "Delete the thread?",
   "com.affine.comment.delete.confirm.description": "All comments will also be deleted, and this action cannot be undone.",
   "com.affine.comment.reply.delete.confirm.title": "Delete this reply?",