Communication: Add answer posts content to course wide search

src/main/java/de/tum/cit/aet/artemis/communication/repository/MessageSpecs.java

@@ -39,8 +39,8 @@ public static Specification<Post> getConversationSpecification(Long conversation
     }
 
     /**
-     * Specification which filters Messages according to a search string in a match-all-manner
-     * message is only kept if the search string (which is not a #id pattern) is included in the message content (all strings lowercased)
+     * Specification which filters Messages and answer posts according to a search string in a match-all-manner
+     * message and answer post are only kept if the search string (which is not a #id pattern) is included in the message content (all strings lowercased)
      *
      * @param searchText Text to be searched within messages
      * @return specification used to chain DB operations
@@ -60,8 +60,10 @@ else if (searchText.startsWith("#") && StringUtils.isNumeric(searchText.substrin
                 Expression<String> searchTextLiteral = criteriaBuilder.literal("%" + searchText.toLowerCase() + "%");
 
                 Predicate searchInMessageContent = criteriaBuilder.like(criteriaBuilder.lower(root.get(Post_.CONTENT)), searchTextLiteral);
+                Join<Post, AnswerPost> answersJoin = root.join(Post_.ANSWERS, JoinType.LEFT);
+                Predicate searchInAnswerContent = criteriaBuilder.like(criteriaBuilder.lower(answersJoin.get(AnswerPost_.CONTENT)), searchTextLiteral);
 
-                return criteriaBuilder.and(searchInMessageContent);
+                return criteriaBuilder.or(searchInMessageContent, searchInAnswerContent);
             }
         });
     }
@@ -102,7 +104,7 @@ public static Specification<Post> getCourseWideChannelsSpecification(Long course
     }
 
     /**
-     * Specification to fetch Posts of the calling user
+     * Specification to fetch Posts and answer posts of the calling user
      *
      * @param filterToOwn whether only calling users own Posts should be fetched or not
      * @param userId      id of the calling user
@@ -114,7 +116,9 @@ public static Specification<Post> getOwnSpecification(boolean filterToOwn, Long
                 return null;
             }
             else {
-                return criteriaBuilder.equal(root.get(Post_.AUTHOR).get(User_.ID), userId);
+                Join<Post, AnswerPost> answersJoin = root.join(Post_.ANSWERS, JoinType.LEFT);
+                Predicate searchInAnswerContent = criteriaBuilder.equal(answersJoin.get(AnswerPost_.AUTHOR).get(User_.ID), userId);
+                return criteriaBuilder.or(criteriaBuilder.equal(root.get(Post_.AUTHOR).get(User_.ID), userId), searchInAnswerContent);
             }
         });
     }

src/test/java/de/tum/cit/aet/artemis/communication/MessageIntegrationTest.java

@@ -44,6 +44,7 @@
 
 import com.fasterxml.jackson.databind.ObjectMapper;
 
+import de.tum.cit.aet.artemis.communication.domain.AnswerPost;
 import de.tum.cit.aet.artemis.communication.domain.ConversationParticipant;
 import de.tum.cit.aet.artemis.communication.domain.DisplayPriority;
 import de.tum.cit.aet.artemis.communication.domain.Post;
@@ -520,6 +521,51 @@ void testGetCourseWideMessagesFromOneChannel() throws Exception {
         assertThat(returnedPosts.size()).isLessThan(courseWidePosts.size());
     }
 
+    @Test
+    @WithMockUser(username = TEST_PREFIX + "student1", roles = "USER")
+    void testGetCourseWideMessages_WithOwnWithCourseWideContentAndSearchText() throws Exception {
+        // conversation set will fetch all posts of conversation if the user is involved
+        var params = new LinkedMultiValueMap<String, String>();
+        var courseWidePosts = existingConversationMessages.stream().filter(post -> post.getConversation() instanceof Channel channel && channel.getIsCourseWide()).toList();
+        var courseWideChannelId = courseWidePosts.getFirst().getConversation().getId();
+        params.add("courseWideChannelIds", courseWideChannelId.toString());
+        params.add("filterToOwn", "true");
+        params.add("size", "50");
+        params.add("searchText", "Content");
+
+        List<Post> returnedPosts = request.getList("/api/courses/" + courseId + "/messages", HttpStatus.OK, Post.class, params);
+        // get amount of posts with that certain
+        assertThat(returnedPosts).hasSize(existingCourseWideMessages.stream().filter(post -> post.getConversation().getId().equals(courseWideChannelId)
+                && post.getAuthor().getLogin().equals(TEST_PREFIX + "student1") && (post.getContent().contains("Content") || answerHasContext(post.getAnswers(), "Content")))
+                .toList().size());
+        assertThat(returnedPosts.size()).isLessThan(courseWidePosts.size());
+    }
+
+    private boolean answerHasContext(Set<AnswerPost> answers, String searchText) {
+        return answers.stream().anyMatch(answerPost -> answerPost.getContent().contains(searchText));
+    }
+
+    @Test
+    @WithMockUser(username = TEST_PREFIX + "student1", roles = "USER")
+    void testGetCourseWideMessages_WithOwnWithCourseWideContentAndSearchTextInAnswer() throws Exception {
+        // conversation set will fetch all posts of conversation if the user is involved
+        var params = new LinkedMultiValueMap<String, String>();
+        var courseWidePosts = existingConversationMessages.stream().filter(post -> post.getConversation() instanceof Channel channel && channel.getIsCourseWide()).toList();
+        var courseWideChannelId = courseWidePosts.getFirst().getConversation().getId();
+        courseWidePosts.getFirst().getAnswers().forEach(answer -> answer.setContent("AnswerPost"));
+        params.add("courseWideChannelIds", courseWideChannelId.toString());
+        params.add("filterToOwn", "true");
+        params.add("size", "50");
+        params.add("searchText", "Answer");
+
+        List<Post> returnedPosts = request.getList("/api/courses/" + courseId + "/messages", HttpStatus.OK, Post.class, params);
+        // get amount of posts with that certain
+        assertThat(returnedPosts).hasSize(existingCourseWideMessages.stream().filter(post -> post.getConversation().getId().equals(courseWideChannelId)
+                && post.getAuthor().getLogin().equals(TEST_PREFIX + "student1") && (post.getContent().contains("answer") || answerHasContext(post.getAnswers(), "Content")))
+                .toList().size());
+        assertThat(returnedPosts.size()).isLessThan(courseWidePosts.size());
+    }
+
     @Test
     @WithMockUser(username = TEST_PREFIX + "tutor1")
     void testEditConversationPost() throws Exception {