Support uploaded cover images for media posts

src/modules/posts/posts.service.ts

@@ -87,6 +87,7 @@ export class PostsService {
     imageFiles: Array<{ mimetype?: string; size: number; buffer: Buffer; originalname?: string }> = [],
     videoFile?: { mimetype?: string; size: number; buffer: Buffer; originalname?: string },
     audioFile?: { mimetype?: string; size: number; buffer: Buffer; originalname?: string },
+    coverImageFile?: { mimetype?: string; size: number; buffer: Buffer; originalname?: string },
   ): Promise<PostDocument> {
     const inputImageUrls = dto.imageUrls ?? [];
     if (inputImageUrls.length > 10 || imageFiles.length > 10) {
@@ -104,6 +105,12 @@ export class PostsService {
     if (audioFile && dto.audioUrl) {
       throw new BadRequestException('Provide either audioFile or audioUrl, not both');
     }
+    if (coverImageFile && dto.thumbnailUrl) {
+      throw new BadRequestException('Provide either coverImageFile or thumbnailUrl, not both');
+    }
+    if (coverImageFile && !(videoFile || audioFile || dto.videoUrl || dto.audioUrl)) {
+      throw new BadRequestException('coverImageFile is allowed only with video or audio posts');
+    }
     if ((videoFile || dto.videoUrl) && (imageFiles.length || inputImageUrls.length)) {
       throw new BadRequestException('Post can contain either images or video, not both');
     }
@@ -115,10 +122,15 @@ export class PostsService {
     const uploadedImageUrls = savedImageUploads.map((item) => item.primaryUrl);
     const uploadedImageVariants = savedImageUploads.map((item) => item.variants);
     const savedVideoUpload = videoFile ? await this.saveVideoUpload(videoFile) : null;
+    const savedCoverImageUpload = coverImageFile
+      ? await this.saveResponsiveImageAsset('thumbnails', coverImageFile)
+      : null;
     const uploadedVideoUrl = savedVideoUpload?.videoUrl ?? '';
     const uploadedHlsUrl = savedVideoUpload?.hlsUrl ?? '';
-    const uploadedThumbnailUrl = savedVideoUpload?.thumbnailUrl ?? '';
-    const uploadedThumbnailVariants = savedVideoUpload?.thumbnailVariants ?? null;
+    const generatedThumbnailUrl = savedVideoUpload?.thumbnailUrl ?? '';
+    const generatedThumbnailVariants = savedVideoUpload?.thumbnailVariants ?? null;
+    const uploadedThumbnailUrl = savedCoverImageUpload?.primaryUrl ?? generatedThumbnailUrl;
+    const uploadedThumbnailVariants = savedCoverImageUpload?.variants ?? generatedThumbnailVariants;
     const uploadedAudioUrl = audioFile ? await this.saveMediaFile('audio', audioFile) : '';
     const finalImageUrls = uploadedImageUrls.length ? uploadedImageUrls : inputImageUrls;
     const finalImageVariants = uploadedImageVariants.length ? uploadedImageVariants : [];
@@ -174,11 +186,18 @@ export class PostsService {
         uploadedThumbnailUrl
           ? this.deleteThumbnailAsset(uploadedThumbnailUrl, uploadedThumbnailVariants)
           : Promise.resolve(),
+        generatedThumbnailUrl && generatedThumbnailUrl !== uploadedThumbnailUrl
+          ? this.deleteThumbnailAsset(generatedThumbnailUrl, generatedThumbnailVariants)
+          : Promise.resolve(),
         uploadedAudioUrl ? this.deleteManagedPostMedia(uploadedAudioUrl) : Promise.resolve(),
       ]);
       throw error;
     }
 
+    if (generatedThumbnailUrl && generatedThumbnailUrl !== uploadedThumbnailUrl) {
+      await this.deleteThumbnailAsset(generatedThumbnailUrl, generatedThumbnailVariants);
+    }
+
     await this.usersRepository.incrementPostsCount(userId, 1);
     await this.feedVersionService.bumpGlobalVersion();
     await this.notifyMentionedUsers(userId, post.id, mentionResolution.mentionedUsers, finalContent);
@@ -192,6 +211,7 @@ export class PostsService {
     imageFiles: Array<{ mimetype?: string; size: number; buffer: Buffer; originalname?: string }> = [],
     videoFile?: { mimetype?: string; size: number; buffer: Buffer; originalname?: string },
     audioFile?: { mimetype?: string; size: number; buffer: Buffer; originalname?: string },
+    coverImageFile?: { mimetype?: string; size: number; buffer: Buffer; originalname?: string },
   ): Promise<PostDocument> {
     const post = await this.postsRepository.findById(postId);
     if (!post) {
@@ -219,6 +239,15 @@ export class PostsService {
     if (audioFile && dto.audioUrl) {
       throw new BadRequestException('Provide either audioFile or audioUrl, not both');
     }
+    if (coverImageFile && dto.thumbnailUrl) {
+      throw new BadRequestException('Provide either coverImageFile or thumbnailUrl, not both');
+    }
+    if (coverImageFile && (imageFiles.length || inputImageUrls.length)) {
+      throw new BadRequestException('coverImageFile is allowed only with video or audio posts');
+    }
+    if (coverImageFile && !(videoFile || audioFile || dto.videoUrl || dto.audioUrl || post.videoUrl || post.audioUrl)) {
+      throw new BadRequestException('coverImageFile is allowed only with video or audio posts');
+    }
     if ((videoFile || dto.videoUrl) && (imageFiles.length || inputImageUrls.length)) {
       throw new BadRequestException('Post can contain either images or video, not both');
     }
@@ -230,10 +259,15 @@ export class PostsService {
     const uploadedImageUrls = savedImageUploads.map((item) => item.primaryUrl);
     const uploadedImageVariants = savedImageUploads.map((item) => item.variants);
     const savedVideoUpload = videoFile ? await this.saveVideoUpload(videoFile) : null;
+    const savedCoverImageUpload = coverImageFile
+      ? await this.saveResponsiveImageAsset('thumbnails', coverImageFile)
+      : null;
     const uploadedVideoUrl = savedVideoUpload?.videoUrl ?? '';
     const uploadedHlsUrl = savedVideoUpload?.hlsUrl ?? '';
-    const uploadedThumbnailUrl = savedVideoUpload?.thumbnailUrl ?? '';
-    const uploadedThumbnailVariants = savedVideoUpload?.thumbnailVariants ?? null;
+    const generatedThumbnailUrl = savedVideoUpload?.thumbnailUrl ?? '';
+    const generatedThumbnailVariants = savedVideoUpload?.thumbnailVariants ?? null;
+    const uploadedThumbnailUrl = savedCoverImageUpload?.primaryUrl ?? generatedThumbnailUrl;
+    const uploadedThumbnailVariants = savedCoverImageUpload?.variants ?? generatedThumbnailVariants;
     const uploadedAudioUrl = audioFile ? await this.saveMediaFile('audio', audioFile) : '';
     const hasImageUpdate = typeof dto.imageUrls !== 'undefined' || imageFiles.length > 0;
     const existingImageVariants = Array.isArray((post as any).imageVariants)
@@ -266,7 +300,7 @@ export class PostsService {
         ? uploadedAudioUrl
         : dto.audioUrl ?? ''
       : post.audioUrl ?? '';
-    const nextThumbnailVariants = videoFile
+    const nextThumbnailVariants = coverImageFile || videoFile
       ? uploadedThumbnailVariants
       : typeof dto.thumbnailUrl === 'string'
         ? null
@@ -392,6 +426,9 @@ export class PostsService {
         uploadedThumbnailUrl
           ? this.deleteThumbnailAsset(uploadedThumbnailUrl, uploadedThumbnailVariants)
           : Promise.resolve(),
+        generatedThumbnailUrl && generatedThumbnailUrl !== uploadedThumbnailUrl
+          ? this.deleteThumbnailAsset(generatedThumbnailUrl, generatedThumbnailVariants)
+          : Promise.resolve(),
         uploadedAudioUrl ? this.deleteManagedPostMedia(uploadedAudioUrl) : Promise.resolve(),
       ]);
       throw error;
@@ -404,6 +441,9 @@ export class PostsService {
         uploadedThumbnailUrl
           ? this.deleteThumbnailAsset(uploadedThumbnailUrl, uploadedThumbnailVariants)
           : Promise.resolve(),
+        generatedThumbnailUrl && generatedThumbnailUrl !== uploadedThumbnailUrl
+          ? this.deleteThumbnailAsset(generatedThumbnailUrl, generatedThumbnailVariants)
+          : Promise.resolve(),
         uploadedAudioUrl ? this.deleteManagedPostMedia(uploadedAudioUrl) : Promise.resolve(),
       ]);
       throw new NotFoundException('Post not found');
@@ -418,6 +458,9 @@ export class PostsService {
     if ((post.thumbnailUrl ?? '') !== (updated.thumbnailUrl ?? '')) {
       await this.deleteThumbnailAsset(post.thumbnailUrl ?? '', existingThumbnailVariants);
     }
+    if (generatedThumbnailUrl && generatedThumbnailUrl !== uploadedThumbnailUrl) {
+      await this.deleteThumbnailAsset(generatedThumbnailUrl, generatedThumbnailVariants);
+    }
     if (hasAudioUpdate && (post.audioUrl ?? '') !== (updated.audioUrl ?? '')) {
       await this.deleteManagedPostMedia(post.audioUrl ?? '');
     }
@@ -567,6 +610,7 @@ export class PostsService {
     userId: string,
     dto: CreateReelDto,
     videoFile?: { mimetype?: string; size: number; buffer: Buffer; originalname?: string },
+    coverImageFile?: { mimetype?: string; size: number; buffer: Buffer; originalname?: string },
   ): Promise<PostDocument> {
     if (!videoFile && !dto.videoUrl) {
       throw new BadRequestException('Reel requires videoFile or videoUrl');
@@ -592,6 +636,7 @@ export class PostsService {
       [],
       videoFile,
       undefined,
+      coverImageFile,
     );
   }