Allow viewers to request collaboration on posts

src/modules/collaboration-requests/collaboration-requests.service.ts

@@ -52,30 +52,27 @@ export class CollaborationRequestsService {
     dto: CreateCollaborationRequestDto,
     file?: UploadedAudioFile,
   ) {
-    const targetUserId = dto.targetUserId;
-
-    if (!Types.ObjectId.isValid(postId) || !Types.ObjectId.isValid(targetUserId)) {
+    if (!Types.ObjectId.isValid(postId)) {
       throw new BadRequestException('Invalid collaboration request');
     }
 
-    if (requesterId === targetUserId) {
-      throw new BadRequestException('You cannot invite yourself');
-    }
-
-    const [post, targetUser, block] = await Promise.all([
-      this.postsRepository.findById(postId),
-      this.usersRepository.findById(targetUserId),
-      this.blocksRepository.findAnyBetween(requesterId, targetUserId),
-    ]);
+    const post = await this.postsRepository.findById(postId);
 
     if (!post) {
       throw new NotFoundException('Post not found');
     }
 
-    if (post.authorId.toString() !== requesterId) {
-      throw new ForbiddenException('Only the post owner can invite collaborators');
+    const targetUserId = post.authorId.toString();
+
+    if (requesterId === targetUserId) {
+      throw new BadRequestException('You cannot request collaboration on your own post');
     }
 
+    const [targetUser, block] = await Promise.all([
+      this.usersRepository.findById(targetUserId),
+      this.blocksRepository.findAnyBetween(requesterId, targetUserId),
+    ]);
+
     if (!targetUser || targetUser.isDisabled) {
       throw new NotFoundException('Target user not found');
     }
@@ -302,7 +299,7 @@ export class CollaborationRequestsService {
 
     if (request.postId) {
       await this.postsRepository.updateById(request.postId.toString(), {
-        $addToSet: { collaboratorIds: request.targetUserId },
+        $addToSet: { collaboratorIds: request.requesterId },
       });
     }
 
@@ -568,4 +565,4 @@ export class CollaborationRequestsService {
       deepLink: `/users/${actorId}`,
     };
   }
-}
+}