fix: load original image for gifs

open-api/immich-openapi-specs.json

@@ -7708,6 +7708,9 @@
           "originalFileName": {
             "type": "string"
           },
+          "originalMimeType": {
+            "type": "string"
+          },
           "originalPath": {
             "type": "string"
           },
@@ -7782,6 +7785,7 @@
           "isTrashed",
           "localDateTime",
           "originalFileName",
+          "originalMimeType",
           "originalPath",
           "ownerId",
           "resized",

open-api/typescript-sdk/src/fetch-client.ts

@@ -182,6 +182,7 @@ export type AssetResponseDto = {
     livePhotoVideoId?: string | null;
     localDateTime: string;
     originalFileName: string;
+    originalMimeType: string;
     originalPath: string;
     owner?: UserResponseDto;
     ownerId: string;

server/src/dtos/asset-response.dto.ts

@@ -13,12 +13,14 @@ import { UserResponseDto, mapUser } from 'src/dtos/user.dto';
 import { AssetFaceEntity } from 'src/entities/asset-face.entity';
 import { AssetEntity, AssetType } from 'src/entities/asset.entity';
 import { SmartInfoEntity } from 'src/entities/smart-info.entity';
+import { mimeTypes } from 'src/utils/mime-types';
 
 export class SanitizedAssetResponseDto {
   id!: string;
   @ApiProperty({ enumName: 'AssetTypeEnum', enum: AssetType })
   type!: AssetType;
   thumbhash!: string | null;
+  originalMimeType!: string;
   resized!: boolean;
   localDateTime!: Date;
   duration!: string;
@@ -87,6 +89,7 @@ export function mapAsset(entity: AssetEntity, options: AssetMapOptions = {}): As
     const sanitizedAssetResponse: SanitizedAssetResponseDto = {
       id: entity.id,
       type: entity.type,
+      originalMimeType: mimeTypes.lookup(entity.originalFileName),
       thumbhash: entity.thumbhash?.toString('base64') ?? null,
       localDateTime: entity.localDateTime,
       resized: !!entity.previewPath,
@@ -107,6 +110,7 @@ export function mapAsset(entity: AssetEntity, options: AssetMapOptions = {}): As
     type: entity.type,
     originalPath: entity.originalPath,
     originalFileName: entity.originalFileName,
+    originalMimeType: mimeTypes.lookup(entity.originalFileName),
     resized: !!entity.previewPath,
     thumbhash: entity.thumbhash?.toString('base64') ?? null,
     fileCreatedAt: entity.fileCreatedAt,

server/test/fixtures/shared-link.stub.ts

@@ -52,6 +52,7 @@ const assetResponse: AssetResponseDto = {
   ownerId: 'user_id_1',
   deviceId: 'device_id_1',
   type: AssetType.VIDEO,
+  originalMimeType: 'image/jpeg',
   originalPath: 'fake_path/jpeg',
   originalFileName: 'asset_1.jpeg',
   resized: false,
@@ -82,6 +83,7 @@ const assetResponse: AssetResponseDto = {
 const assetResponseWithoutMetadata = {
   id: 'id_1',
   type: AssetType.VIDEO,
+  originalMimeType: 'image/jpeg',
   resized: false,
   thumbhash: null,
   localDateTime: today,

web/src/lib/components/asset-viewer/photo-viewer.spec.ts

@@ -0,0 +1,49 @@
+import PhotoViewer from '$lib/components/asset-viewer/photo-viewer.svelte';
+import * as utils from '$lib/utils';
+import { AssetMediaSize } from '@immich/sdk';
+import { assetFactory } from '@test-data/factories/asset-factory';
+import { render } from '@testing-library/svelte';
+import type { MockInstance } from 'vitest';
+
+vi.mock('$lib/utils', async (originalImport) => {
+  const meta = await originalImport<typeof import('$lib/utils')>();
+  return {
+    ...meta,
+    getAssetOriginalUrl: vi.fn(),
+    getAssetThumbnailUrl: vi.fn(),
+  };
+});
+
+describe('PhotoViewer component', () => {
+  let getAssetOriginalUrlSpy: MockInstance;
+  let getAssetThumbnailUrlSpy: MockInstance;
+
+  beforeAll(() => {
+    getAssetOriginalUrlSpy = vi.spyOn(utils, 'getAssetOriginalUrl');
+    getAssetThumbnailUrlSpy = vi.spyOn(utils, 'getAssetThumbnailUrl');
+  });
+
+  afterEach(() => {
+    vi.resetAllMocks();
+  });
+
+  it('loads the thumbnail', () => {
+    const asset = assetFactory.build({ originalPath: 'image.jpg', originalMimeType: 'image/jpeg' });
+    render(PhotoViewer, { asset });
+
+    expect(getAssetThumbnailUrlSpy).toBeCalledWith({
+      id: asset.id,
+      size: AssetMediaSize.Preview,
+      checksum: asset.checksum,
+    });
+    expect(getAssetOriginalUrlSpy).not.toBeCalled();
+  });
+
+  it('loads the original image for gifs', () => {
+    const asset = assetFactory.build({ originalPath: 'image.gif', originalMimeType: 'image/gif' });
+    render(PhotoViewer, { asset });
+
+    expect(getAssetThumbnailUrlSpy).not.toBeCalled();
+    expect(getAssetOriginalUrlSpy).toBeCalledWith({ id: asset.id, checksum: asset.checksum });
+  });
+});

web/src/lib/components/asset-viewer/photo-viewer.svelte

@@ -38,7 +38,8 @@
   $: useOriginalByDefault = isWebCompatible && $alwaysLoadOriginalFile;
   $: useOriginalImage = useOriginalByDefault || forceUseOriginal;
   // when true, will force loading of the original image
-  $: forceUseOriginal = forceUseOriginal || ($photoZoomState.currentZoom > 1 && isWebCompatible);
+  $: forceUseOriginal =
+    forceUseOriginal || asset.originalMimeType === 'image/gif' || ($photoZoomState.currentZoom > 1 && isWebCompatible);
 
   $: preload(useOriginalImage, preloadAssets);
   $: imageLoaderUrl = getAssetUrl(asset.id, useOriginalImage, asset.checksum);

web/src/lib/utils/asset-utils.ts

@@ -257,20 +257,20 @@ export function getAssetRatio(asset: AssetResponseDto) {
 }
 
 // list of supported image extensions from https://developer.mozilla.org/en-US/docs/Web/Media/Formats/Image_types excluding svg
-const supportedImageExtensions = new Set(['apng', 'avif', 'gif', 'jpg', 'jpeg', 'jfif', 'pjpeg', 'pjp', 'png', 'webp']);
+const supportedImageMimeTypes = new Set([
+  'image/apng',
+  'image/avif',
+  'image/gif',
+  'image/jpeg',
+  'image/png',
+  'image/webp',
+]);
 
 /**
  * Returns true if the asset is an image supported by web browsers, false otherwise
  */
 export function isWebCompatibleImage(asset: AssetResponseDto): boolean {
-  // originalPath is undefined when public shared link has metadata option turned off
-  if (!asset.originalPath) {
-    return false;
-  }
-
-  const imgExtension = getFilenameExtension(asset.originalPath);
-
-  return supportedImageExtensions.has(imgExtension);
+  return supportedImageMimeTypes.has(asset.originalMimeType);
 }
 
 export const getAssetType = (type: AssetTypeEnum) => {

web/src/test-data/factories/asset-factory.ts

@@ -11,6 +11,7 @@ export const assetFactory = Sync.makeFactory<AssetResponseDto>({
   type: Sync.each(() => faker.helpers.enumValue(AssetTypeEnum)),
   originalPath: Sync.each(() => faker.system.filePath()),
   originalFileName: Sync.each(() => faker.system.fileName()),
+  originalMimeType: Sync.each(() => faker.system.mimeType()),
   resized: true,
   thumbhash: Sync.each(() => faker.string.alphanumeric(28)),
   fileCreatedAt: Sync.each(() => faker.date.past().toISOString()),