Generate preview for pdf

hpi-schul-cloud · Nov 2, 2023 · 30abe5b · 30abe5b
1 parent 63f38be
commit 30abe5b
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Showing 2 changed files with 6 additions and 0 deletions.
diff --git a/apps/server/src/modules/files-storage/interface/preview-input-mime-types.enum.ts b/apps/server/src/modules/files-storage/interface/preview-input-mime-types.enum.ts
@@ -8,4 +8,5 @@ export enum PreviewInputMimeTypes {
 	IMAGE_HEIF = 'image/heif',
 	IMAGE_TIFF = 'image/tiff',
 	IMAGE_WEBP = 'image/webp',
+	APPLICATION_PDF = 'application/pdf',
 }
diff --git a/apps/server/src/shared/infra/preview-generator/preview-generator.service.ts b/apps/server/src/shared/infra/preview-generator/preview-generator.service.ts
@@ -1,6 +1,7 @@
 import { Injectable } from '@nestjs/common';
 import { GetFile, S3ClientAdapter } from '@shared/infra/s3-client';
 import { Logger } from '@src/core/logger';
+import { PreviewInputMimeTypes } from '@src/modules/files-storage/interface';
 import { subClass } from 'gm';
 import { PassThrough } from 'stream';
 import { PreviewFileOptions, PreviewOptions, PreviewResponseMessage } from './interface';
@@ -45,6 +46,10 @@ export class PreviewGeneratorService {
 
 		const preview = this.imageMagick(original.data);
 
+		if (original.contentType === PreviewInputMimeTypes.APPLICATION_PDF) {
+			preview.selectFrame(0);
+		}
+
 		if (width) {
 			preview.resize(width, undefined, '>');
 		}