refactor widget

src/shared/widgets/global/files.tsx

@@ -0,0 +1,95 @@
+import { NDKEvent } from '@nostr-dev-kit/ndk';
+import { useQuery } from '@tanstack/react-query';
+import { useVirtualizer } from '@tanstack/react-virtual';
+import { useCallback, useRef } from 'react';
+
+import { useNDK } from '@libs/ndk/provider';
+
+import { FileNote, NoteSkeleton, NoteWrapper } from '@shared/notes';
+import { TitleBar } from '@shared/titleBar';
+
+import { Widget } from '@utils/types';
+
+export function GlobalFilesWidget({ params }: { params: Widget }) {
+  const { ndk } = useNDK();
+  const { status, data } = useQuery(
+    ['global-files-widget'],
+    async () => {
+      const events = await ndk.fetchEvents({
+        // @ts-expect-error, NDK not support file metadata yet
+        kinds: [1063],
+        limit: 100,
+      });
+      return [...events] as unknown as NDKEvent[];
+    },
+    { refetchOnWindowFocus: false }
+  );
+
+  const parentRef = useRef<HTMLDivElement>(null);
+  const virtualizer = useVirtualizer({
+    count: data ? data.length : 0,
+    getScrollElement: () => parentRef.current,
+    estimateSize: () => 650,
+    overscan: 4,
+  });
+  const items = virtualizer.getVirtualItems();
+
+  // render event match event kind
+  const renderItem = useCallback(
+    (index: string | number) => {
+      const event: NDKEvent = data[index];
+      if (!event) return;
+
+      return (
+        <div key={event.id} data-index={index} ref={virtualizer.measureElement}>
+          <NoteWrapper event={event}>
+            <FileNote event={event} />
+          </NoteWrapper>
+        </div>
+      );
+    },
+    [data]
+  );
+
+  return (
+    <div className="relative shrink-0 grow-0 basis-[400px] bg-white/10 backdrop-blur-xl">
+      <TitleBar id={params.id} title={params.title} />
+      <div ref={parentRef} className="scrollbar-hide h-full overflow-y-auto pb-20">
+        {status === 'loading' ? (
+          <div className="px-3 py-1.5">
+            <div className="rounded-xl bg-white/10 px-3 py-3 backdrop-blur-xl">
+              <NoteSkeleton />
+            </div>
+          </div>
+        ) : items.length === 0 ? (
+          <div className="px-3 py-1.5">
+            <div className="rounded-xl bg-white/10 px-3 py-6 backdrop-blur-xl">
+              <div className="flex flex-col items-center gap-4">
+                <p className="text-center text-sm font-medium text-white">
+                  There have been no new files in the last 24 hours.
+                </p>
+              </div>
+            </div>
+          </div>
+        ) : (
+          <div
+            style={{
+              position: 'relative',
+              width: '100%',
+              height: `${virtualizer.getTotalSize()}px`,
+            }}
+          >
+            <div
+              className="absolute left-0 top-0 w-full"
+              style={{
+                transform: `translateY(${items[0].start}px)`,
+              }}
+            >
+              {items.map((item) => renderItem(item.index))}
+            </div>
+          </div>
+        )}
+      </div>
+    </div>
+  );
+}