Fix: Add video preview #9869 (#10748)

### What problem does this PR solve?

Fix: Add video preview

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

web/src/pages/chunk/parsed-result/add-knowledge/components/knowledge-chunk/components/document-preview/image-preview.tsx

@@ -2,7 +2,7 @@ import message from '@/components/ui/message';
 import { Spin } from '@/components/ui/spin';
 import request from '@/utils/request';
 import classNames from 'classnames';
-import { useEffect, useState } from 'react';
+import { useCallback, useEffect, useState } from 'react';
 
 interface ImagePreviewerProps {
   className?: string;
@@ -17,7 +17,7 @@ export const ImagePreviewer: React.FC<ImagePreviewerProps> = ({
   const [imageSrc, setImageSrc] = useState<string | null>(null);
   const [isLoading, setIsLoading] = useState<boolean>(true);
 
-  const fetchImage = async () => {
+  const fetchImage = useCallback(async () => {
     setIsLoading(true);
     const res = await request(url, {
       method: 'GET',
@@ -30,12 +30,13 @@ export const ImagePreviewer: React.FC<ImagePreviewerProps> = ({
     const objectUrl = URL.createObjectURL(res.data);
     setImageSrc(objectUrl);
     setIsLoading(false);
-  };
+  }, [url]);
+
   useEffect(() => {
     if (url) {
       fetchImage();
     }
-  }, [url]);
+  }, [url, fetchImage]);
 
   useEffect(() => {
     return () => {

web/src/pages/chunk/parsed-result/add-knowledge/components/knowledge-chunk/components/document-preview/index.tsx

@@ -8,6 +8,7 @@ import styles from './index.less';
 import PdfPreviewer, { IProps } from './pdf-preview';
 import { PptPreviewer } from './ppt-preview';
 import { TxtPreviewer } from './txt-preview';
+import { VideoPreviewer } from './video-preview';
 
 type PreviewProps = {
   fileType: string;
@@ -42,11 +43,30 @@ const Preview = ({
           <TxtPreviewer className={className} url={url} />
         </section>
       )}
-      {['visual'].indexOf(fileType) > -1 && (
+      {['jpg', 'png', 'gif', 'jpeg', 'svg', 'bmp', 'ico', 'tif'].indexOf(
+        fileType,
+      ) > -1 && (
         <section>
           <ImagePreviewer className={className} url={url} />
         </section>
       )}
+      {[
+        'mp4',
+        'avi',
+        'mov',
+        'mkv',
+        'wmv',
+        'flv',
+        'mpeg',
+        'mpg',
+        'asf',
+        'rm',
+        'rmvb',
+      ].indexOf(fileType) > -1 && (
+        <section>
+          <VideoPreviewer className={className} url={url} />
+        </section>
+      )}
       {['pptx'].indexOf(fileType) > -1 && (
         <section>
           <PptPreviewer className={className} url={url} />

web/src/pages/chunk/parsed-result/add-knowledge/components/knowledge-chunk/components/document-preview/video-preview.tsx

@@ -0,0 +1,74 @@
+import message from '@/components/ui/message';
+import { Spin } from '@/components/ui/spin';
+import request from '@/utils/request';
+import classNames from 'classnames';
+import { useCallback, useEffect, useState } from 'react';
+
+interface VideoPreviewerProps {
+  className?: string;
+  url: string;
+}
+
+export const VideoPreviewer: React.FC<VideoPreviewerProps> = ({
+  className,
+  url,
+}) => {
+  // const url = useGetDocumentUrl();
+  const [videoSrc, setVideoSrc] = useState<string | null>(null);
+  const [isLoading, setIsLoading] = useState<boolean>(true);
+
+  const fetchVideo = useCallback(async () => {
+    setIsLoading(true);
+    const res = await request(url, {
+      method: 'GET',
+      responseType: 'blob',
+      onError: () => {
+        message.error('Failed to load video');
+        setIsLoading(false);
+      },
+    });
+    const objectUrl = URL.createObjectURL(res.data);
+    setVideoSrc(objectUrl);
+    setIsLoading(false);
+  }, [url]);
+
+  useEffect(() => {
+    if (url) {
+      fetchVideo();
+    }
+  }, [url, fetchVideo]);
+
+  useEffect(() => {
+    return () => {
+      if (videoSrc) {
+        URL.revokeObjectURL(videoSrc);
+      }
+    };
+  }, [videoSrc]);
+
+  return (
+    <div
+      className={classNames(
+        'relative w-full h-full p-4 bg-background-paper border border-border-normal rounded-md video-previewer',
+        className,
+      )}
+    >
+      {isLoading && (
+        <div className="absolute inset-0 flex items-center justify-center">
+          <Spin />
+        </div>
+      )}
+
+      {!isLoading && videoSrc && (
+        <div className="max-h-[80vh] overflow-auto p-2">
+          <video
+            src={videoSrc}
+            controls
+            className="w-full h-auto max-w-full object-contain"
+            onLoadedData={() => URL.revokeObjectURL(videoSrc!)}
+          />
+        </div>
+      )}
+    </div>
+  );
+};

web/src/pages/chunk/parsed-result/add-knowledge/components/knowledge-chunk/index.tsx

@@ -166,6 +166,7 @@ const Chunk = () => {
       case 'doc':
         return documentInfo?.name.split('.').pop() || 'doc';
       case 'visual':
+        return documentInfo?.name.split('.').pop() || 'visual';
       case 'docx':
       case 'txt':
       case 'md':