metadataloader.ts modifications to add xmp sidecar

Modified module imports and added code to read xmp sidecar for videometadata using exifr module.

src/backend/model/fileaccess/MetadataLoader.ts

@@ -12,6 +12,8 @@ import {IptcParser} from 'ts-node-iptc';
 import {FFmpegFactory} from '../FFmpegFactory';
 import {FfprobeData} from 'fluent-ffmpeg';
 import {Utils} from '../../../common/Utils';
+import * as exifr from 'exifr';
+import * as path from 'path';
 
 const LOG_TAG = '[MetadataLoader]';
 const ffmpeg = FFmpegFactory.get();
@@ -30,6 +32,29 @@ export class MetadataLoader {
         fileSize: 0,
         fps: 0,
       };
+      
+      try {
+        // search for sidecar and merge metadata
+        const fullPathWithoutExt = path.parse(fullPath).name;
+        const sidecarPaths = [
+          fullPath + '.xmp',
+          fullPath + '.XMP',
+          fullPathWithoutExt + '.xmp',
+          fullPathWithoutExt + '.XMP',
+        ];
+
+        for (const sidecarPath of sidecarPaths) {
+          if (fs.existsSync(sidecarPath)) {
+            const sidecarData = exifr.sidecar(sidecarPath);
+            sidecarData.then((response) => {
+              metadata.keywords = [(response as any).dc.subject].flat();
+            });
+          }
+        }
+      } catch (err) {
+        // ignoring errors
+      }
+
       try {
         const stat = fs.statSync(fullPath);
         metadata.fileSize = stat.size;