Add optimized media delivery and HLS support

src/modules/posts/posts.service.ts

@@ -50,6 +50,7 @@ type NormalizedPostMediaMetadata = {
 
 type SavedVideoUpload = {
   videoUrl: string;
+  hlsUrl: string;
   thumbnailUrl: string;
 };
 
@@ -100,6 +101,7 @@ export class PostsService {
     const uploadedImageUrls = await this.saveImageFiles(imageFiles);
     const savedVideoUpload = videoFile ? await this.saveVideoUpload(videoFile) : null;
     const uploadedVideoUrl = savedVideoUpload?.videoUrl ?? '';
+    const uploadedHlsUrl = savedVideoUpload?.hlsUrl ?? '';
     const uploadedThumbnailUrl = savedVideoUpload?.thumbnailUrl ?? '';
     const uploadedAudioUrl = audioFile ? await this.saveMediaFile('audio', audioFile) : '';
     const finalImageUrls = uploadedImageUrls.length ? uploadedImageUrls : inputImageUrls;
@@ -127,6 +129,7 @@ export class PostsService {
         content: finalContent,
         imageUrls: finalImageUrls,
         videoUrl: finalVideoUrl,
+        hlsUrl: uploadedHlsUrl,
         audioUrl: finalAudioUrl,
         taggedUserIds,
         mentionUsernames: mentionResolution.mentionUsernames,
@@ -142,6 +145,7 @@ export class PostsService {
       await Promise.all([
         ...uploadedImageUrls.map((url) => this.deleteManagedPostMedia(url)),
         uploadedVideoUrl ? this.deleteManagedPostMedia(uploadedVideoUrl) : Promise.resolve(),
+        uploadedHlsUrl ? this.storageService.deleteContainingDirectory(uploadedHlsUrl) : Promise.resolve(),
         uploadedThumbnailUrl ? this.deleteManagedPostMedia(uploadedThumbnailUrl) : Promise.resolve(),
         uploadedAudioUrl ? this.deleteManagedPostMedia(uploadedAudioUrl) : Promise.resolve(),
       ]);
@@ -198,6 +202,7 @@ export class PostsService {
     const uploadedImageUrls = await this.saveImageFiles(imageFiles);
     const savedVideoUpload = videoFile ? await this.saveVideoUpload(videoFile) : null;
     const uploadedVideoUrl = savedVideoUpload?.videoUrl ?? '';
+    const uploadedHlsUrl = savedVideoUpload?.hlsUrl ?? '';
     const uploadedThumbnailUrl = savedVideoUpload?.thumbnailUrl ?? '';
     const uploadedAudioUrl = audioFile ? await this.saveMediaFile('audio', audioFile) : '';
     const hasImageUpdate = typeof dto.imageUrls !== 'undefined' || imageFiles.length > 0;
@@ -215,6 +220,7 @@ export class PostsService {
         ? uploadedVideoUrl
         : dto.videoUrl ?? ''
       : post.videoUrl ?? '';
+    const nextHlsUrl = hasVideoUpdate ? (videoFile ? uploadedHlsUrl : '') : post.hlsUrl ?? '';
     const nextAudioUrl = hasAudioUpdate
       ? audioFile
         ? uploadedAudioUrl
@@ -266,6 +272,7 @@ export class PostsService {
       ...dto,
       content: nextContent,
       imageUrls: nextImageUrls,
+      hlsUrl: nextHlsUrl,
       taggedUserIds: nextTaggedUserIds,
       mentionUsernames: mentionResolution.mentionUsernames,
       location: nextLocation,
@@ -287,14 +294,17 @@ export class PostsService {
     }
     if (hasAudioUpdate && !hasVideoUpdate) {
       payload.videoUrl = '';
+      payload.hlsUrl = '';
     }
     if (hasImageUpdate) {
       payload.videoUrl = '';
       payload.audioUrl = '';
+      payload.hlsUrl = '';
     }
 
     if (videoFile) {
       payload.videoUrl = uploadedVideoUrl;
+      payload.hlsUrl = uploadedHlsUrl;
       payload.imageUrls = [];
       payload.audioUrl = '';
     }
@@ -302,6 +312,7 @@ export class PostsService {
       payload.audioUrl = uploadedAudioUrl;
       payload.imageUrls = [];
       payload.videoUrl = '';
+      payload.hlsUrl = '';
     }
 
     let updated: PostDocument | null;
@@ -311,6 +322,7 @@ export class PostsService {
       await Promise.all([
         ...uploadedImageUrls.map((url) => this.deleteManagedPostMedia(url)),
         uploadedVideoUrl ? this.deleteManagedPostMedia(uploadedVideoUrl) : Promise.resolve(),
+        uploadedHlsUrl ? this.storageService.deleteContainingDirectory(uploadedHlsUrl) : Promise.resolve(),
         uploadedThumbnailUrl ? this.deleteManagedPostMedia(uploadedThumbnailUrl) : Promise.resolve(),
         uploadedAudioUrl ? this.deleteManagedPostMedia(uploadedAudioUrl) : Promise.resolve(),
       ]);
@@ -320,6 +332,7 @@ export class PostsService {
       await Promise.all([
         ...uploadedImageUrls.map((url) => this.deleteManagedPostMedia(url)),
         uploadedVideoUrl ? this.deleteManagedPostMedia(uploadedVideoUrl) : Promise.resolve(),
+        uploadedHlsUrl ? this.storageService.deleteContainingDirectory(uploadedHlsUrl) : Promise.resolve(),
         uploadedThumbnailUrl ? this.deleteManagedPostMedia(uploadedThumbnailUrl) : Promise.resolve(),
         uploadedAudioUrl ? this.deleteManagedPostMedia(uploadedAudioUrl) : Promise.resolve(),
       ]);
@@ -329,6 +342,9 @@ export class PostsService {
     if (hasVideoUpdate && (post.videoUrl ?? '') !== (updated.videoUrl ?? '')) {
       await this.deleteManagedPostMedia(post.videoUrl ?? '');
     }
+    if ((post.hlsUrl ?? '') !== (updated.hlsUrl ?? '')) {
+      await this.storageService.deleteContainingDirectory(post.hlsUrl ?? '');
+    }
     if ((post.thumbnailUrl ?? '') !== (updated.thumbnailUrl ?? '')) {
       await this.deleteManagedPostMedia(post.thumbnailUrl ?? '');
     }
@@ -369,6 +385,7 @@ export class PostsService {
     await Promise.all([
       ...(post.imageUrls ?? []).map((url) => this.deleteManagedPostMedia(url)),
       this.deleteManagedPostMedia(post.videoUrl ?? ''),
+      this.storageService.deleteContainingDirectory(post.hlsUrl ?? ''),
       this.deleteManagedPostMedia(post.audioUrl ?? ''),
     ]);
     await this.usersRepository.incrementPostsCount(userId, -1);
@@ -610,6 +627,7 @@ export class PostsService {
     await Promise.all([
       ...(post.imageUrls ?? []).map((url) => this.deleteManagedPostMedia(url)),
       this.deleteManagedPostMedia(post.videoUrl ?? ''),
+      this.storageService.deleteContainingDirectory(post.hlsUrl ?? ''),
       this.deleteManagedPostMedia(post.audioUrl ?? ''),
     ]);
     const authorId = this.extractEntityId(post.authorId);
@@ -918,7 +936,9 @@ export class PostsService {
     const extension = this.validateMediaFile('video', optimized.file);
 
     let videoUrl = '';
+    let hlsUrl = '';
     let thumbnailUrl = '';
+    const hlsFolderName = `stream-${new Types.ObjectId().toString()}`;
 
     try {
       videoUrl = await this.storageService.saveFile({
@@ -929,6 +949,14 @@ export class PostsService {
         fileNamePrefix: 'video',
       });
 
+      if (optimized.generatedHls?.files.length) {
+        const savedHlsFiles = await this.storageService.saveFiles({
+          folderSegments: ['posts', 'hls', hlsFolderName],
+          files: optimized.generatedHls.files,
+        });
+        hlsUrl = savedHlsFiles[optimized.generatedHls.playlistRelativePath] ?? '';
+      }
+
       if (optimized.generatedThumbnail) {
         thumbnailUrl = await this.storageService.saveFile({
           folderSegments: ['posts', 'thumbnails'],
@@ -939,10 +967,11 @@ export class PostsService {
         });
       }
 
-      return { videoUrl, thumbnailUrl };
+      return { videoUrl, hlsUrl, thumbnailUrl };
     } catch (error) {
       await Promise.all([
         videoUrl ? this.deleteManagedPostMedia(videoUrl) : Promise.resolve(),
+        hlsUrl ? this.storageService.deleteContainingDirectory(hlsUrl) : Promise.resolve(),
         thumbnailUrl ? this.deleteManagedPostMedia(thumbnailUrl) : Promise.resolve(),
       ]);
       throw error;

src/modules/posts/schemas/post.schema.ts

@@ -22,6 +22,9 @@ export class Post {
   @Prop({ default: '' })
   videoUrl!: string;
 
+  @Prop({ default: '' })
+  hlsUrl!: string;
+
   @Prop({ default: '' })
   audioUrl!: string;
 
@@ -134,6 +137,7 @@ PostSchema.index({
 const transformManagedPostFiles = (_doc: unknown, ret: any) => {
   ret.imageUrls = resolveManagedFileUrls(ret.imageUrls);
   ret.videoUrl = resolveManagedFileUrl(ret.videoUrl);
+  ret.hlsUrl = resolveManagedFileUrl(ret.hlsUrl);
   ret.audioUrl = resolveManagedFileUrl(ret.audioUrl);
   ret.thumbnailUrl = resolveManagedFileUrl(ret.thumbnailUrl);
   return ret;