Programming exercises: Add feedback discussion feature to feedback analysis table

src/main/java/de/tum/cit/aet/artemis/assessment/service/ResultService.java

@@ -692,4 +692,19 @@ public void deleteLongFeedback(List<Feedback> feedbackList, Result result) {
         List<Feedback> feedbacks = new ArrayList<>(feedbackList);
         result.updateAllFeedbackItems(feedbacks, true);
     }
+
+    /**
+     * Retrieves the number of students affected by a specific feedback detail text for a given exercise.
+     * <p>
+     * This method queries the repository to count the distinct students whose submissions were impacted
+     * by feedback entries matching the provided detail text within the specified exercise.
+     * </p>
+     *
+     * @param exerciseId the ID of the exercise for which the affected student count is requested.
+     * @param detailText the feedback detail text used to filter affected students.
+     * @return the total number of distinct students affected by the feedback detail text.
+     */
+    public long getAffectedStudentCountByFeedbackDetailText(long exerciseId, String detailText) {
+        return studentParticipationRepository.countAffectedStudentsByFeedbackDetailText(exerciseId, detailText);
+    }
 }

src/main/java/de/tum/cit/aet/artemis/assessment/web/ResultResource.java

@@ -373,4 +373,18 @@ public ResponseEntity<Page<FeedbackAffectedStudentDTO>> getAffectedStudentsWithF
 
         return ResponseEntity.ok(participation);
     }
+
+    /**
+     * GET /exercises/{exerciseId}/feedback-detail/affected-students : Retrieves the count of students affected by a specific feedback detail text.
+     *
+     * @param exerciseId The ID of the exercise for which affected students are counted.
+     * @param detailText The feedback detail text to filter by.
+     * @return A {@link ResponseEntity} containing the count of affected students.
+     */
+    @GetMapping("exercises/{exerciseId}/feedback-detail/affected-students")
+    @EnforceAtLeastEditorInExercise
+    public ResponseEntity<Long> countAffectedStudentsByFeedbackDetailText(@PathVariable long exerciseId, @RequestParam("detailText") String detailText) {
+        long affectedStudentCount = resultService.getAffectedStudentCountByFeedbackDetailText(exerciseId, detailText);
+        return ResponseEntity.ok(affectedStudentCount);
+    }
 }

src/main/java/de/tum/cit/aet/artemis/communication/service/conversation/ChannelService.java

@@ -17,18 +17,21 @@
 import org.springframework.util.StringUtils;
 
 import de.tum.cit.aet.artemis.communication.domain.ConversationParticipant;
+import de.tum.cit.aet.artemis.communication.domain.NotificationType;
 import de.tum.cit.aet.artemis.communication.domain.conversation.Channel;
 import de.tum.cit.aet.artemis.communication.dto.ChannelDTO;
 import de.tum.cit.aet.artemis.communication.dto.MetisCrudAction;
 import de.tum.cit.aet.artemis.communication.repository.ConversationParticipantRepository;
 import de.tum.cit.aet.artemis.communication.repository.conversation.ChannelRepository;
 import de.tum.cit.aet.artemis.communication.service.conversation.errors.ChannelNameDuplicateException;
+import de.tum.cit.aet.artemis.communication.service.notifications.SingleUserNotificationService;
 import de.tum.cit.aet.artemis.core.domain.Course;
 import de.tum.cit.aet.artemis.core.domain.User;
 import de.tum.cit.aet.artemis.core.exception.BadRequestAlertException;
 import de.tum.cit.aet.artemis.core.repository.UserRepository;
 import de.tum.cit.aet.artemis.exam.domain.Exam;
 import de.tum.cit.aet.artemis.exercise.domain.Exercise;
+import de.tum.cit.aet.artemis.exercise.repository.StudentParticipationRepository;
 import de.tum.cit.aet.artemis.lecture.domain.Lecture;
 
 @Profile(PROFILE_CORE)
@@ -47,12 +50,18 @@ public class ChannelService {
 
     private final UserRepository userRepository;
 
+    private final StudentParticipationRepository studentParticipationRepository;
+
+    private final SingleUserNotificationService singleUserNotificationService;
+
     public ChannelService(ConversationParticipantRepository conversationParticipantRepository, ChannelRepository channelRepository, ConversationService conversationService,
-            UserRepository userRepository) {
+            UserRepository userRepository, StudentParticipationRepository studentParticipationRepository, SingleUserNotificationService singleUserNotificationService) {
         this.conversationParticipantRepository = conversationParticipantRepository;
         this.channelRepository = channelRepository;
         this.conversationService = conversationService;
         this.userRepository = userRepository;
+        this.studentParticipationRepository = studentParticipationRepository;
+        this.singleUserNotificationService = singleUserNotificationService;
     }
 
     /**
@@ -405,4 +414,45 @@ private static String generateChannelNameFromTitle(@NotNull String prefix, Optio
         }
         return channelName;
     }
+
+    /**
+     * Creates a feedback-specific channel for an exercise within a course.
+     * <p>
+     * This method sets up a new channel and adds affected students based on the provided feedback detail text.
+     * It validates the channel name, creates the channel, and registers affected students as members. Additionally,
+     * it sends notifications to the added users about the new channel.
+     * </p>
+     *
+     * @param course             the course in which the channel is being created.
+     * @param exerciseId         the ID of the exercise associated with the feedback channel.
+     * @param channelDTO         the DTO containing the properties of the channel to be created, such as name, description, and visibility.
+     * @param feedbackDetailText the feedback detail text used to identify the students affected by the feedback.
+     * @param requestingUser     the user initiating the channel creation request.
+     * @return the created {@link Channel} object with its properties.
+     * @throws BadRequestAlertException if the channel name starts with an invalid prefix (e.g., "$").
+     */
+    public Channel createFeedbackChannel(Course course, Long exerciseId, ChannelDTO channelDTO, String feedbackDetailText, User requestingUser) {
+        var channelToCreate = new Channel();
+        channelToCreate.setName(channelDTO.getName());
+        channelToCreate.setIsPublic(channelDTO.getIsPublic());
+        channelToCreate.setIsAnnouncementChannel(channelDTO.getIsAnnouncementChannel());
+        channelToCreate.setIsArchived(false);
+        channelToCreate.setDescription(channelDTO.getDescription());
+
+        if (channelToCreate.getName() != null && channelToCreate.getName().trim().startsWith("$")) {
+            throw new BadRequestAlertException("User generated channels cannot start with $", "channel", "channelNameInvalid");
+        }
+
+        var createdChannel = createChannel(course, channelToCreate, Optional.of(requestingUser));
+
+        List<String> userLogins = studentParticipationRepository.findAffectedLoginsByFeedbackDetailText(exerciseId, feedbackDetailText);
+
+        if (userLogins != null && !userLogins.isEmpty()) {
+            var registeredUsers = registerUsersToChannel(false, false, false, userLogins, course, createdChannel);
+            registeredUsers.forEach(user -> singleUserNotificationService.notifyClientAboutConversationCreationOrDeletion(createdChannel, user, requestingUser,
+                    NotificationType.CONVERSATION_ADD_USER_CHANNEL));
+        }
+
+        return createdChannel;
+    }
 }

src/main/java/de/tum/cit/aet/artemis/communication/web/conversation/ChannelResource.java

@@ -26,6 +26,7 @@
 import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.PutMapping;
 import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestHeader;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RestController;
@@ -50,7 +51,9 @@
 import de.tum.cit.aet.artemis.core.repository.UserRepository;
 import de.tum.cit.aet.artemis.core.security.Role;
 import de.tum.cit.aet.artemis.core.security.annotations.EnforceAtLeastStudent;
+import de.tum.cit.aet.artemis.core.security.annotations.enforceRoleInCourse.EnforceAtLeastEditorInCourse;
 import de.tum.cit.aet.artemis.core.service.AuthorizationCheckService;
+import de.tum.cit.aet.artemis.exercise.repository.StudentParticipationRepository;
 import de.tum.cit.aet.artemis.tutorialgroup.service.TutorialGroupChannelManagementService;
 
 @Profile(PROFILE_CORE)
@@ -80,10 +83,13 @@ public class ChannelResource extends ConversationManagementResource {
 
     private final ConversationParticipantRepository conversationParticipantRepository;
 
+    private final StudentParticipationRepository studentParticipationRepository;
+
     public ChannelResource(ConversationParticipantRepository conversationParticipantRepository, SingleUserNotificationService singleUserNotificationService,
             ChannelService channelService, ChannelRepository channelRepository, ChannelAuthorizationService channelAuthorizationService,
             AuthorizationCheckService authorizationCheckService, ConversationDTOService conversationDTOService, CourseRepository courseRepository, UserRepository userRepository,
-            ConversationService conversationService, TutorialGroupChannelManagementService tutorialGroupChannelManagementService) {
+            ConversationService conversationService, TutorialGroupChannelManagementService tutorialGroupChannelManagementService,
+            StudentParticipationRepository studentParticipationRepository) {
         super(courseRepository);
         this.channelService = channelService;
         this.channelRepository = channelRepository;
@@ -95,6 +101,7 @@ public ChannelResource(ConversationParticipantRepository conversationParticipant
         this.tutorialGroupChannelManagementService = tutorialGroupChannelManagementService;
         this.singleUserNotificationService = singleUserNotificationService;
         this.conversationParticipantRepository = conversationParticipantRepository;
+        this.studentParticipationRepository = studentParticipationRepository;
     }
 
     /**
@@ -460,6 +467,38 @@ public ResponseEntity<Void> deregisterUsers(@PathVariable Long courseId, @PathVa
         return ResponseEntity.ok().build();
     }
 
+    /**
+     * POST /api/courses/:courseId/channels/: Creates a new feedback-specific channel in a course.
+     * <p>
+     * This endpoint allows authorized users to create a new channel within a course that is specifically designed for discussions
+     * around a particular exercise's feedback. The channel is populated with all affected students based on the provided feedback detail text.
+     * </p>
+     *
+     * @param courseId           the ID of the course where the channel is being created.
+     * @param exerciseId         the ID of the exercise for which the feedback channel is being created.
+     * @param channelDTO         the DTO containing the properties of the channel to be created, such as name, description, and visibility.
+     * @param feedbackDetailText a string representing the feedback detail text used to determine the affected students to be added to the channel.
+     * @return ResponseEntity with status 201 (Created) and the body containing the details of the created channel.
+     * @throws URISyntaxException       if the URI for the created resource cannot be constructed.
+     * @throws BadRequestAlertException if the channel name starts with an invalid prefix (e.g., "$").
+     */
+    @PostMapping("{courseId}/{exerciseId}/feedback-channel")
+    @EnforceAtLeastEditorInCourse
+    public ResponseEntity<ChannelDTO> createFeedbackChannel(@PathVariable Long courseId, @PathVariable Long exerciseId, @RequestBody ChannelDTO channelDTO,
+            @RequestHeader("feedback-detail-text") String feedbackDetailText) throws URISyntaxException {
+        log.debug("REST request to create feedback channel in course {} with properties: {}", courseId, channelDTO);
+
+        var requestingUser = userRepository.getUserWithGroupsAndAuthorities();
+        var course = courseRepository.findByIdElseThrow(courseId);
+
+        checkCommunicationEnabledElseThrow(course);
+        channelAuthorizationService.isAllowedToCreateChannel(course, requestingUser);
+
+        var createdChannel = channelService.createFeedbackChannel(course, exerciseId, channelDTO, feedbackDetailText, requestingUser);
+
+        return ResponseEntity.created(new URI("/api/channels/" + createdChannel.getId())).body(conversationDTOService.convertChannelToDTO(requestingUser, createdChannel));
+    }
+
     private void checkEntityIdMatchesPathIds(Channel channel, Optional<Long> courseId, Optional<Long> conversationId) {
         courseId.ifPresent(courseIdValue -> {
             if (!channel.getCourse().getId().equals(courseIdValue)) {

src/main/java/de/tum/cit/aet/artemis/exercise/repository/StudentParticipationRepository.java

@@ -1361,4 +1361,48 @@ SELECT MAX(pr.id)
                 ORDER BY p.student.firstName ASC
             """)
     Page<FeedbackAffectedStudentDTO> findAffectedStudentsByFeedbackId(@Param("exerciseId") long exerciseId, @Param("feedbackIds") List<Long> feedbackIds, Pageable pageable);
+
+    /**
+     * Retrieves the logins of students affected by a specific feedback detail text in a given exercise.
+     *
+     * @param exerciseId The ID of the exercise for which affected students are requested.
+     * @param detailText The feedback detail text to filter by.
+     * @return A list of student logins affected by the given feedback detail text in the specified exercise.
+     */
+    @Query("""
+                SELECT DISTINCT p.student.login
+                FROM ProgrammingExerciseStudentParticipation p
+                LEFT JOIN p.submissions s
+                LEFT JOIN s.results r
+                LEFT JOIN r.feedbacks f
+                WHERE p.exercise.id = :exerciseId
+                  AND f.detailText = :detailText
+                  AND p.testRun = FALSE
+                  AND f.positive = FALSE
+            """)
+    List<String> findAffectedLoginsByFeedbackDetailText(@Param("exerciseId") long exerciseId, @Param("detailText") String detailText);
+
+    /**
+     * Counts the number of distinct students affected by a specific feedback detail text for a given programming exercise.
+     * <p>
+     * This query identifies students whose submissions were impacted by feedback entries matching the provided detail text
+     * within the specified exercise. Only students with non-test run submissions and negative feedback entries are considered.
+     * </p>
+     *
+     * @param exerciseId the ID of the programming exercise for which the count is calculated.
+     * @param detailText the feedback detail text used to filter the affected students.
+     * @return the total number of distinct students affected by the feedback detail text.
+     */
+    @Query("""
+                SELECT COUNT(DISTINCT p.student.id)
+                FROM ProgrammingExerciseStudentParticipation p
+                LEFT JOIN p.submissions s
+                LEFT JOIN s.results r
+                LEFT JOIN r.feedbacks f
+                WHERE p.exercise.id = :exerciseId
+                  AND f.detailText = :detailText
+                  AND p.testRun = FALSE
+                  AND f.positive = FALSE
+            """)
+    long countAffectedStudentsByFeedbackDetailText(@Param("exerciseId") long exerciseId, @Param("detailText") String detailText);
 }

src/main/webapp/app/exercises/programming/manage/grading/feedback-analysis/Modal/confirm-feedback-channel-creation-modal.component.html

@@ -0,0 +1,11 @@
+<div class="modal-header">
+    <h4 class="modal-title" [jhiTranslate]="TRANSLATION_BASE + '.header'"></h4>
+    <button type="button" class="btn-close" aria-label="Close" (click)="dismiss()"></button>
+</div>
+<div class="modal-body">
+    <p [jhiTranslate]="TRANSLATION_BASE + '.confirmationMessage'" [translateValues]="{ count: affectedStudentsCount }"></p>
+</div>
+<div class="modal-footer">
+    <button type="button" class="btn btn-secondary" (click)="dismiss()" [jhiTranslate]="TRANSLATION_BASE + '.cancel'"></button>
+    <button type="button" class="btn btn-primary" (click)="confirm()" [jhiTranslate]="TRANSLATION_BASE + '.confirm'"></button>
+</div>

src/main/webapp/app/exercises/programming/manage/grading/feedback-analysis/Modal/confirm-feedback-channel-creation-modal.component.ts

@@ -0,0 +1,24 @@
+import { Component, input } from '@angular/core';
+import { NgbActiveModal } from '@ng-bootstrap/ng-bootstrap';
+import { ArtemisSharedCommonModule } from 'app/shared/shared-common.module';
+
+@Component({
+    selector: 'jhi-confirm-feedback-channel-creation-modal',
+    templateUrl: './confirm-feedback-channel-creation-modal.component.html',
+    imports: [ArtemisSharedCommonModule],
+    standalone: true,
+})
+export class ConfirmFeedbackChannelCreationModalComponent {
+    affectedStudentsCount = input.required<number>();
+    readonly TRANSLATION_BASE = 'artemisApp.programmingExercise.configureGrading.feedbackAnalysis.feedbackDetailChannel.confirmationModal';
+
+    constructor(private activeModal: NgbActiveModal) {}
+
+    confirm(): void {
+        this.activeModal.close(true);
+    }
+
+    dismiss(): void {
+        this.activeModal.dismiss();
+    }
+}