feature: Additional tasks - add a GET endpoint to get a post by id

task: 8697gdchv
JimTheCat · Jan 16, 2025 · 7428082 · 7428082
1 parent 3809b22
commit 7428082
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Showing 4 changed files with 44 additions and 3 deletions.
diff --git a/backend/src/main/java/meowhub/backend/posts/controllers/PostController.java b/backend/src/main/java/meowhub/backend/posts/controllers/PostController.java
@@ -38,7 +38,12 @@ public ResponseEntity<Page<PostDto>> getPosts(@AuthenticationPrincipal UserDetai
     public ResponseEntity<Page<PostDto>> getPostsForUser(@PathVariable("login") String login, @AuthenticationPrincipal UserDetails userDetails, @RequestParam(defaultValue = "0") int pageNo, @RequestParam(defaultValue = "10") int pageSize) {
         Page<PostDto> posts = postService.getPostsForUser(login, userDetails.getUsername(), pageNo, pageSize);
         return ResponseEntity.ok(posts);
+    }
 
+    @GetMapping("/{postId}")
+    public ResponseEntity<PostDto> getPostById(@PathVariable("postId") String postId, @AuthenticationPrincipal UserDetails userDetails) {
+        PostDto postDto = postService.getPostById(userDetails.getUsername(), postId);
+        return ResponseEntity.ok(postDto);
     }
 
     @PostMapping(consumes = MediaType.MULTIPART_FORM_DATA_VALUE)

diff --git a/backend/src/main/java/meowhub/backend/posts/repositories/PostRepository.java b/backend/src/main/java/meowhub/backend/posts/repositories/PostRepository.java
@@ -33,9 +33,8 @@ public interface PostRepository extends JpaRepository<Post, String> {
                 JOIN u.posts p
                 LEFT JOIN Profile profile ON profile.user.id = u.id
                 LEFT JOIN ProfilePicture pp ON pp.profile.id = profile.id
-                LEFT JOIN u.postsPrivacy postsPrivacy
-                WHERE postsPrivacy.code = 'PUBLIC'
-                       OR (postsPrivacy.code = 'FRIENDS_ONLY' AND u.id IN (u.id,
+                WHERE u.postsPrivacy.code = 'PUBLIC'
+                       OR (u.postsPrivacy.code = 'FRIENDS_ONLY' AND u.id IN (u.id,
                             (SELECT r.receiver.id
                             FROM User sender
                             JOIN sender.userRelationsSender r
@@ -92,6 +91,36 @@ public interface PostRepository extends JpaRepository<Post, String> {
             """)
     Page<PostDto> findByUserLoginIfPublicOrFriend(@Param("login") String login, @Param("requestedBy") String requestedBy, Pageable pageable);
 
+    @Query("""
+                       SELECT new meowhub.backend.posts.dtos.PostDto (
+                                p.id,
+                                p.contentHtml,
+                                new meowhub.backend.users.dtos.BasicUserInfoDto (
+                                    u.id,
+                                    u.name,
+                                    u.surname,
+                                    u.login,
+                                    pp.ociUrl
+                                ),
+                                (SELECT COUNT(c.id) FROM Comment c WHERE c.post.id = p.id),
+                                p.createdAt
+                            )
+                            FROM Post p
+                            JOIN User u ON p.user.id = u.id
+                       LEFT JOIN ProfilePicture pp ON pp.profile.user.id = u.id AND pp.isCurrentProfilePicture = true
+                           WHERE p.id = :postId
+                             AND (u.postsPrivacy.code = 'PUBLIC'
+                                  OR (u.postsPrivacy.code = 'FRIENDS_ONLY' AND (
+                                        SELECT COUNT(*)
+                                          FROM UserRelation ur
+                                         WHERE ((ur.receiver.login = u.login AND ur.sender.login = :requestedBy)
+                                            OR (ur.sender.login = u.login AND ur.receiver.login = :requestedBy))
+                                           AND ur.relationType.code = 'FRIENDS'
+                                        ) > 0
+                                   ))
+            """)
+    PostDto getPostByIdIfPublicOrFriends(@Param("requestedBy") String requestedBy, @Param("postId") String postId);
+
     @Query("""
                 SELECT new meowhub.backend.posts.dtos.PostDto (
                     p.id,

diff --git a/backend/src/main/java/meowhub/backend/posts/services/PostService.java b/backend/src/main/java/meowhub/backend/posts/services/PostService.java
@@ -11,6 +11,8 @@ public interface PostService {
 
     Page<PostDto> getPostsForUser(String login, String requestedBy, int pageNo, int pageSize);
 
+    PostDto getPostById(String requestedBy, String postId);
+
     PostDto createPost(String login, String content, List<MultipartFile> pictures);
 
     PostDto updatePost(String login, String postId, String content);

diff --git a/backend/src/main/java/meowhub/backend/posts/services/impl/PostServiceImpl.java b/backend/src/main/java/meowhub/backend/posts/services/impl/PostServiceImpl.java
@@ -34,6 +34,11 @@ public class PostServiceImpl implements PostService {
     private final PictureUtils pictureUtils;
     private final PostPictureRepository postPictureRepository;
 
+    @Override
+    public PostDto getPostById(String requestedBy, String postId) {
+        return postRepository.getPostByIdIfPublicOrFriends(requestedBy, postId);
+    }
+
     @Override
     public Page<PostDto> getPosts(String requestedBy, int pageNo, int pageSize) {
         Pageable pageable = PageRequest.of(pageNo, pageSize);