fix(server): handle numeric 'Image Description' and 'Description' values (#11636)

* Made 'Image Description' and 'Description' type safe during exif parsing

* add test + update types

---------

Co-authored-by: Michel Heusschen <59014050+michelheusschen@users.noreply.github.com>

server/src/interfaces/metadata.interface.ts

@@ -7,7 +7,7 @@ export interface ExifDuration {
   Scale?: number;
 }
 
-export interface ImmichTags extends Omit<Tags, 'FocalLength' | 'Duration'> {
+export interface ImmichTags extends Omit<Tags, 'FocalLength' | 'Duration' | 'Description' | 'ImageDescription'> {
   ContentIdentifier?: string;
   MotionPhoto?: number;
   MotionPhotoVersion?: number;
@@ -19,6 +19,10 @@ export interface ImmichTags extends Omit<Tags, 'FocalLength' | 'Duration'> {
   EmbeddedVideoType?: string;
   EmbeddedVideoFile?: BinaryField;
   MotionPhotoVideo?: BinaryField;
+
+  // Type is wrong, can also be number.
+  Description?: string | number;
+  ImageDescription?: string | number;
 }
 
 export interface IMetadataRepository {

server/src/services/metadata.service.spec.ts

@@ -753,6 +753,18 @@ describe(MetadataService.name, () => {
         }),
       );
     });
+
+    it('handles a numeric description', async () => {
+      assetMock.getByIds.mockResolvedValue([assetStub.image]);
+      metadataMock.readTags.mockResolvedValue({ Description: 1000 });
+
+      await sut.handleMetadataExtraction({ id: assetStub.image.id });
+      expect(assetMock.upsertExif).toHaveBeenCalledWith(
+        expect.objectContaining({
+          description: '1000',
+        }),
+      );
+    });
   });
 
   describe('handleQueueSidecar', () => {

server/src/services/metadata.service.ts

@@ -482,7 +482,7 @@ export class MetadataService implements OnEvents {
       bitsPerSample: this.getBitsPerSample(tags),
       colorspace: tags.ColorSpace ?? null,
       dateTimeOriginal: this.getDateTimeOriginal(tags) ?? asset.fileCreatedAt,
-      description: (tags.ImageDescription || tags.Description || '').trim(),
+      description: String(tags.ImageDescription || tags.Description || '').trim(),
       exifImageHeight: validate(tags.ImageHeight),
       exifImageWidth: validate(tags.ImageWidth),
       exposureTime: tags.ExposureTime ?? null,