feat(progress): профиль студента курса и скачивание попыток

2026-10-27 17:45:07 +03:00
parent a970fe62c4
commit fa097518f8
20 changed files with 1117 additions and 5 deletions
--- a/services/gateway/src/main/resources/application.yml
+++ b/services/gateway/src/main/resources/application.yml
@@ -13,6 +13,10 @@ spring:
              uri: ${LMS_IDENTITY_URI:http://localhost:8081}
              predicates:
                - Path=/api/v1/auth/**,/api/v1/accounts/**,/api/v1/groups/**,/api/v1/students/**,/api/v1/teachers/**
+            - id: progress-profile
+              uri: ${LMS_PROGRESS_URI:http://localhost:8083}
+              predicates:
+                - Path=/api/v1/courses/*/students/*/profile,/api/v1/courses/*/submissions/*/download
            - id: academic
              uri: ${LMS_ACADEMIC_URI:http://localhost:8082}
              predicates:
--- a/services/progress-service/src/main/kotlin/ru/ysu/lms/progress/AcademicClient.kt
+++ b/services/progress-service/src/main/kotlin/ru/ysu/lms/progress/AcademicClient.kt
@@ -5,6 +5,8 @@ import org.springframework.core.ParameterizedTypeReference
 import org.springframework.http.client.JdkClientHttpRequestFactory
 import org.springframework.stereotype.Service
 import org.springframework.web.client.RestClient
+import org.springframework.web.client.RestClientResponseException
+import ru.ysu.lms.common.ForbiddenException
 import ru.ysu.lms.common.NotFoundException
 import java.net.http.HttpClient
 import java.time.Duration
@@ -38,11 +40,71 @@ class AcademicClient(
            .retrieve()
            .body(LabInfo::class.java)
            ?: throw NotFoundException("Лабораторная не найдена")
+
+    /** Курс с группами; academic-service сам проверяет доступ по пользовательскому токену. */
+    fun getCourse(
+        courseId: String,
+        token: String,
+    ): CourseInfo =
+        try {
+            client
+                .get()
+                .uri("/api/v1/courses/{id}", courseId)
+                .header("Authorization", "Bearer $token")
+                .retrieve()
+                .body(CourseInfo::class.java)
+                ?: throw NotFoundException("Курс не найден")
+        } catch (ex: RestClientResponseException) {
+            throw courseError(ex)
+        }
+
+    /**
+     * Лабораторные курса вместе с уровнями и вариантами: список отдаёт только сводки,
+     * поэтому детали каждой лабораторной подтягиваются отдельно. Ошибка детали не
+     * должна ронять весь профиль — остаётся сводка без уровней.
+     */
+    fun getCourseLabs(
+        courseId: String,
+        token: String,
+    ): List<LabInfo> {
+        val type = object : ParameterizedTypeReference<List<LabInfo>>() {}
+        val summaries =
+            try {
+                client
+                    .get()
+                    .uri("/api/v1/labs?courseId={courseId}", courseId)
+                    .header("Authorization", "Bearer $token")
+                    .retrieve()
+                    .body(type) ?: emptyList()
+            } catch (ex: RestClientResponseException) {
+                throw courseError(ex)
+            }
+        return summaries.map { summary ->
+            if (summary.id.isBlank()) {
+                summary
+            } else {
+                val detail = runCatching { getLab(summary.id, token) }.getOrNull() ?: summary
+                detail.copy(
+                    courseId = detail.courseId ?: summary.courseId ?: courseId,
+                    courseNo = detail.courseNo ?: summary.courseNo,
+                    courseTitle = detail.courseTitle ?: summary.courseTitle,
+                )
+            }
+        }
+    }
 }

+private fun courseError(ex: RestClientResponseException): Exception =
+    when (ex.statusCode.value()) {
+        403 -> ForbiddenException("Курс недоступен")
+        404 -> NotFoundException("Курс не найден")
+        else -> ex
+    }
+
@Service
 class IdentityClient(
    @Value("\${lms.identity.base-url}") baseUrl: String,
+    @Value("\${lms.internal.token:dev-internal-token}") private val internalToken: String,
 ) {
    private val client = restClient(baseUrl)

@@ -67,11 +129,39 @@ class IdentityClient(
            .retrieve()
            .body(type) ?: emptyList()
    }
+
+    /** Внутренний контракт identity-service: контекст студента, без пользовательского токена. */
+    fun getStudentContext(studentId: String): StudentContext =
+        try {
+            client
+                .get()
+                .uri("/api/v1/internal/students/{id}/context", studentId)
+                .header(INTERNAL_TOKEN_HEADER, internalToken)
+                .retrieve()
+                .body(StudentContext::class.java)
+                ?: throw NotFoundException("Студент не найден")
+        } catch (ex: RestClientResponseException) {
+            if (ex.statusCode.value() == 404) throw NotFoundException("Студент не найден") else throw ex
+        }
+
+    /** Пакетная подпись авторов: один запрос на весь профиль. */
+    fun lookupAccounts(ids: Collection<String>): List<AccountInfo> {
+        if (ids.isEmpty()) return emptyList()
+        val type = object : ParameterizedTypeReference<List<AccountInfo>>() {}
+        return client
+            .post()
+            .uri("/api/v1/internal/accounts/lookup")
+            .header(INTERNAL_TOKEN_HEADER, internalToken)
+            .body(mapOf("ids" to ids.toList()))
+            .retrieve()
+            .body(type) ?: emptyList()
+    }
 }

 /** Таймауты обязательны: зависший downstream держит JDBC-соединение из пула и вешает сервис. */
 private const val CONNECT_TIMEOUT_SECONDS = 3L
 private const val READ_TIMEOUT_SECONDS = 30L
+private const val INTERNAL_TOKEN_HEADER = "X-Internal-Token"

 private fun restClient(baseUrl: String): RestClient =
    RestClient
--- a/services/progress-service/src/main/kotlin/ru/ysu/lms/progress/Dtos.kt
+++ b/services/progress-service/src/main/kotlin/ru/ysu/lms/progress/Dtos.kt
@@ -67,6 +67,45 @@ data class LabInfo(
    val defenseAt: String? = null,
    val pointsMax: Any? = null,
    val levels: List<LevelInfo> = emptyList(),
+    val courseId: String? = null,
+    val courseNo: Long? = null,
+    val courseTitle: String? = null,
+)
+
+@JsonIgnoreProperties(ignoreUnknown = true)
+data class CourseInfo(
+    val id: String = "",
+    val courseNo: Long = 0,
+    val title: String = "",
+    val status: String = "",
+    val groups: List<CourseGroupInfo> = emptyList(),
+)
+
+@JsonIgnoreProperties(ignoreUnknown = true)
+data class CourseGroupInfo(
+    val groupId: String = "",
+    val removedAt: String? = null,
+)
+
+/** Внутренний контекст студента из identity-service. */
+@JsonIgnoreProperties(ignoreUnknown = true)
+data class StudentContext(
+    val id: String = "",
+    val login: String = "",
+    val fullName: String = "",
+    val studentNo: String = "",
+    val status: String = "",
+    val enrollmentYear: Short? = null,
+    val groupId: String? = null,
+    val groupName: String? = null,
+)
+
+/** Минимальные данные аккаунта для подписи авторов оценок и комментариев. */
+@JsonIgnoreProperties(ignoreUnknown = true)
+data class AccountInfo(
+    val id: String = "",
+    val login: String = "",
+    val role: String = "",
 )

@JsonIgnoreProperties(ignoreUnknown = true)
--- a/services/progress-service/src/main/kotlin/ru/ysu/lms/progress/GradeService.kt
+++ b/services/progress-service/src/main/kotlin/ru/ysu/lms/progress/GradeService.kt
@@ -20,7 +20,10 @@ class GradeService(
    private val gradeComments: GradeCommentRepository,
 ) {
    @Transactional
-    fun setGrade(request: GradeSetRequest): GradeResponse {
+    fun setGrade(
+        request: GradeSetRequest,
+        authorAccountId: UUID? = null,
+    ): GradeResponse {
        if (request.score < BigDecimal.ZERO || request.score > BigDecimal("5")) {
            throw BadRequestException("Оценка должна быть в диапазоне 0–5")
        }
@@ -30,9 +33,10 @@ class GradeService(
        val grade = grades.findById(key).orElseGet { LabGrade(studentId = key.studentId, labId = key.labId) }
        grade.score = request.score
        grade.generalComment = request.generalComment.trim()
+        grade.updatedByAccountId = authorAccountId
        grade.updatedAt = java.time.Instant.now()
        grades.save(grade)
-        replaceComments(sid, lid, request.comments)
+        replaceComments(sid, lid, request.comments, authorAccountId)
        return GradeResponse(
            request.studentId,
            request.labId,
@@ -46,13 +50,22 @@ class GradeService(
        sid: UUID,
        lid: UUID,
        inputs: List<CommentInput>,
+        authorAccountId: UUID?,
    ) {
        val existing = gradeComments.findByStudentIdAndLabId(sid, lid).map { it.text + "|" + it.tone }.toSet()
        val incoming = inputs.filter { it.text.isNotBlank() }.map { it.text.trim() to normalizeTone(it.tone) }
        if (existing.toSet() == incoming.toSet()) return
        gradeComments.deleteByStudentIdAndLabId(sid, lid)
        for ((text, tone) in incoming) {
-            gradeComments.save(GradeComment(studentId = sid, labId = lid, text = text, tone = tone))
+            gradeComments.save(
+                GradeComment(
+                    studentId = sid,
+                    labId = lid,
+                    text = text,
+                    tone = tone,
+                    authorAccountId = authorAccountId,
+                ),
+            )
            val t = templates.findByText(text)
            if (t == null) {
                templates.save(CommentTemplate(text = text, tone = tone, useCount = 1))
--- a/services/progress-service/src/main/kotlin/ru/ysu/lms/progress/ProgressController.kt
+++ b/services/progress-service/src/main/kotlin/ru/ysu/lms/progress/ProgressController.kt
@@ -79,7 +79,8 @@ class ProgressController(
    @PreAuthorize("hasAuthority('ROLE_ADMIN')")
    fun setGrade(
        @Valid @RequestBody body: GradeSetRequest,
-    ): GradeResponse = grades.setGrade(body)
+        @AuthenticationPrincipal jwt: Jwt,
+    ): GradeResponse = grades.setGrade(body, UUID.fromString(jwt.subject))

    @GetMapping("/grades")
    @PreAuthorize("hasAuthority('ROLE_ADMIN')")
--- a/services/progress-service/src/main/kotlin/ru/ysu/lms/progress/domain/Comments.kt
+++ b/services/progress-service/src/main/kotlin/ru/ysu/lms/progress/domain/Comments.kt
@@ -25,5 +25,6 @@ class GradeComment(
    @Column(name = "lab_id", nullable = false) var labId: UUID = UUID(0, 0),
    @Column(nullable = false) var text: String = "",
    @Column(nullable = false, length = 8) var tone: String = "neutral",
+    @Column(name = "author_account_id") var authorAccountId: UUID? = null,
    @Column(name = "created_at", nullable = false) var createdAt: Instant = Instant.now(),
 )
--- a/services/progress-service/src/main/kotlin/ru/ysu/lms/progress/domain/LabGrade.kt
+++ b/services/progress-service/src/main/kotlin/ru/ysu/lms/progress/domain/LabGrade.kt
@@ -18,6 +18,7 @@ class LabGrade(
    @Id @Column(nullable = false) var labId: UUID = UUID(0, 0),
    @Column(nullable = false) var score: BigDecimal = BigDecimal.ZERO,
    @Column(name = "general_comment", nullable = false) var generalComment: String = "",
+    @Column(name = "updated_by_account_id") var updatedByAccountId: UUID? = null,
    @Column(nullable = false) var updatedAt: Instant = Instant.now(),
 )

--- a/services/progress-service/src/main/kotlin/ru/ysu/lms/progress/profile/ProfileController.kt
+++ b/services/progress-service/src/main/kotlin/ru/ysu/lms/progress/profile/ProfileController.kt
@@ -0,0 +1,68 @@
+package ru.ysu.lms.progress.profile
+
+import org.springframework.http.HttpHeaders
+import org.springframework.http.MediaType
+import org.springframework.http.ResponseEntity
+import org.springframework.security.access.prepost.PreAuthorize
+import org.springframework.security.core.annotation.AuthenticationPrincipal
+import org.springframework.security.oauth2.jwt.Jwt
+import org.springframework.web.bind.annotation.GetMapping
+import org.springframework.web.bind.annotation.PathVariable
+import org.springframework.web.bind.annotation.RequestMapping
+import org.springframework.web.bind.annotation.RestController
+import java.net.URLEncoder
+import java.nio.charset.StandardCharsets
+import java.util.UUID
+
+@RestController
+@RequestMapping("/api/v1/courses")
+class ProfileController(
+    private val profiles: StudentProfileService,
+) {
+    @GetMapping("/{courseId}/students/{studentId}/profile")
+    @PreAuthorize("hasAnyRole('ADMIN','TEACHER','STUDENT')")
+    fun profile(
+        @PathVariable courseId: UUID,
+        @PathVariable studentId: UUID,
+        @AuthenticationPrincipal jwt: Jwt,
+    ): StudentCourseProfile =
+        profiles.profile(
+            courseId = courseId,
+            studentId = studentId,
+            callerId = UUID.fromString(jwt.subject),
+            callerRole = role(jwt),
+            token = jwt.tokenValue,
+        )
+
+    @GetMapping("/{courseId}/submissions/{submissionId}/download")
+    @PreAuthorize("hasAnyRole('ADMIN','TEACHER')")
+    fun download(
+        @PathVariable courseId: UUID,
+        @PathVariable submissionId: UUID,
+        @AuthenticationPrincipal jwt: Jwt,
+    ): ResponseEntity<ByteArray> {
+        val (bytes, name) =
+            profiles.downloadSubmission(
+                courseId = courseId,
+                submissionId = submissionId,
+                callerId = UUID.fromString(jwt.subject),
+                callerRole = role(jwt),
+                token = jwt.tokenValue,
+            )
+        return attachment(bytes, name)
+    }
+
+    private fun role(jwt: Jwt): String = jwt.getClaimAsString("role") ?: ""
+
+    private fun attachment(
+        bytes: ByteArray,
+        name: String,
+    ): ResponseEntity<ByteArray> =
+        ResponseEntity
+            .ok()
+            .header(
+                HttpHeaders.CONTENT_DISPOSITION,
+                "attachment; filename*=UTF-8''${URLEncoder.encode(name, StandardCharsets.UTF_8)}",
+            ).contentType(MediaType.APPLICATION_OCTET_STREAM)
+            .body(bytes)
+}
--- a/services/progress-service/src/main/kotlin/ru/ysu/lms/progress/profile/ProfileDtos.kt
+++ b/services/progress-service/src/main/kotlin/ru/ysu/lms/progress/profile/ProfileDtos.kt
@@ -0,0 +1,95 @@
+package ru.ysu.lms.progress.profile
+
+/** Краткие данные курса в профиле студента. */
+data class ProfileCourse(
+    val id: String,
+    val courseNo: Long,
+    val title: String,
+)
+
+data class ProfileStudent(
+    val id: String,
+    val studentNo: String,
+    val fullName: String,
+    val groupId: String?,
+    val groupName: String?,
+    val status: String,
+    val enrollmentYear: Short?,
+)
+
+data class ProfileSummary(
+    val labsTotal: Int,
+    val submitted: Int,
+    val graded: Int,
+    val averageScore: Double?,
+    val defensesTotal: Int,
+    val defensesReady: Int,
+)
+
+data class ProfileVariant(
+    val number: String,
+    val title: String,
+)
+
+data class ProfileLevel(
+    val title: String,
+)
+
+data class ProfileAuthor(
+    val id: String,
+    val login: String,
+)
+
+data class ProfileGrade(
+    val score: String,
+    val published: Boolean,
+    val generalComment: String,
+    val author: ProfileAuthor?,
+)
+
+data class ProfileComment(
+    val id: String,
+    val text: String,
+    val tone: String,
+    val author: ProfileAuthor?,
+    val createdAt: String,
+)
+
+data class ProfileDefense(
+    val sessionId: String,
+    val status: String,
+    val readyReason: String?,
+    val code: String?,
+    val assignmentMd: String,
+    val secondsLeft: Long?,
+)
+
+data class ProfileSubmission(
+    val id: String,
+    val seq: Int,
+    val createdAt: String,
+    val files: List<String>,
+    val downloadUrl: String,
+)
+
+data class ProfileLab(
+    val id: String,
+    val number: Int,
+    val title: String,
+    val deadlineAt: String?,
+    val variant: ProfileVariant?,
+    val level: ProfileLevel?,
+    val attemptsCount: Int,
+    val lastSubmissionAt: String?,
+    val grade: ProfileGrade?,
+    val comments: List<ProfileComment>,
+    val defense: ProfileDefense?,
+    val submissions: List<ProfileSubmission>,
+)
+
+data class StudentCourseProfile(
+    val course: ProfileCourse,
+    val student: ProfileStudent,
+    val summary: ProfileSummary,
+    val labs: List<ProfileLab>,
+)
--- a/services/progress-service/src/main/kotlin/ru/ysu/lms/progress/profile/StudentProfileService.kt
+++ b/services/progress-service/src/main/kotlin/ru/ysu/lms/progress/profile/StudentProfileService.kt
@@ -0,0 +1,431 @@
+package ru.ysu.lms.progress.profile
+
+import org.springframework.stereotype.Service
+import org.springframework.transaction.annotation.Transactional
+import ru.ysu.lms.common.ForbiddenException
+import ru.ysu.lms.common.NotFoundException
+import ru.ysu.lms.progress.AcademicClient
+import ru.ysu.lms.progress.CourseInfo
+import ru.ysu.lms.progress.DefenseService
+import ru.ysu.lms.progress.DefenseStatus
+import ru.ysu.lms.progress.IdentityClient
+import ru.ysu.lms.progress.LabInfo
+import ru.ysu.lms.progress.StudentContext
+import ru.ysu.lms.progress.SubmissionService
+import ru.ysu.lms.progress.SubmissionStorage
+import ru.ysu.lms.progress.domain.DefenseSession
+import ru.ysu.lms.progress.domain.GradeComment
+import ru.ysu.lms.progress.domain.LabGrade
+import ru.ysu.lms.progress.domain.Submission
+import ru.ysu.lms.progress.repo.DefenseSessionRepository
+import ru.ysu.lms.progress.repo.GradeCommentRepository
+import ru.ysu.lms.progress.repo.GradePublicationRepository
+import ru.ysu.lms.progress.repo.GradePublicationStudentRepository
+import ru.ysu.lms.progress.repo.LabGradeRepository
+import ru.ysu.lms.progress.repo.StudentLabLevelRepository
+import ru.ysu.lms.progress.repo.SubmissionRepository
+import ru.ysu.lms.progress.repo.VariantAssignmentRepository
+import java.time.Duration
+import java.time.Instant
+import java.util.UUID
+
+/**
+ * Профиль студента на курсе для преподавателя/администратора и самого студента.
+ * Все данные собираются одним вызовом: оценки, комментарии, попытки сдач, защиты,
+ * назначенные варианты и состояние публикации.
+ */
+@Suppress("LongParameterList", "TooManyFunctions")
+@Service
+class StudentProfileService(
+    private val academic: AcademicClient,
+    private val identity: IdentityClient,
+    private val grades: LabGradeRepository,
+    private val comments: GradeCommentRepository,
+    private val submissions: SubmissionRepository,
+    private val storage: SubmissionStorage,
+    private val defenses: DefenseSessionRepository,
+    private val assignments: VariantAssignmentRepository,
+    private val levels: StudentLabLevelRepository,
+    private val publications: GradePublicationRepository,
+    private val studentPublications: GradePublicationStudentRepository,
+    private val submissionService: SubmissionService,
+) {
+    @Transactional(readOnly = true)
+    fun profile(
+        courseId: UUID,
+        studentId: UUID,
+        callerId: UUID,
+        callerRole: String,
+        token: String,
+    ): StudentCourseProfile {
+        val role = normalizeRole(callerRole)
+        val course = academic.getCourse(courseId.toString(), token)
+        val context = identity.getStudentContext(studentId.toString())
+        requireProfileAccess(course, context, studentId, callerId, role)
+
+        val labs = courseLabs(courseId, token)
+        val labIds = labs.map { it.first }
+        val sid = studentId
+        val visibleGrades = gradesByLab(sid, labIds)
+        val allComments = commentsByLab(sid, labIds)
+        val submissionsByLab = submissionsByLab(sid, labIds)
+        val defensesByLab = defensesByLab(sid, labIds)
+        val assignmentsByLab = assignmentsByLab(sid, labIds)
+        val levelsByLab = levelsByLab(sid, labIds)
+        val published = publishedLabs(context.groupId, sid, labIds)
+
+        val showUnpublished = role == ROLE_ADMIN || role == ROLE_TEACHER
+        val authorIds = mutableSetOf<UUID>()
+        for ((labId, _) in labs) {
+            if (showUnpublished || labId in published) {
+                visibleGrades[labId]?.updatedByAccountId?.let { authorIds.add(it) }
+                allComments[labId].orEmpty().forEach { it.authorAccountId?.let(authorIds::add) }
+            }
+        }
+        val logins = lookupLogins(authorIds)
+
+        val profileLabs =
+            labs.map { (labId, lab) ->
+                buildLab(
+                    courseId = courseId,
+                    studentId = sid,
+                    lab = lab,
+                    labId = labId,
+                    grade = visibleGrades[labId],
+                    comments = allComments[labId].orEmpty(),
+                    submissions = submissionsByLab[labId].orEmpty(),
+                    defense = defensesByLab[labId],
+                    variantId = assignmentsByLab[labId],
+                    levelId = levelsByLab[labId],
+                    published = labId in published,
+                    showUnpublished = showUnpublished,
+                    logins = logins,
+                )
+            }
+
+        return StudentCourseProfile(
+            course = ProfileCourse(course.id.ifBlank { courseId.toString() }, course.courseNo, course.title),
+            student = toStudent(context, studentId),
+            summary = summary(profileLabs),
+            labs = profileLabs,
+        )
+    }
+
+    /** Скачивание чужой сдачи: преподаватель — только для студента из активной группы курса. */
+    fun downloadSubmission(
+        courseId: UUID,
+        submissionId: UUID,
+        callerId: UUID,
+        callerRole: String,
+        token: String,
+    ): Pair<ByteArray, String> {
+        val role = normalizeRole(callerRole)
+        if (role != ROLE_ADMIN && role != ROLE_TEACHER) {
+            forbidden("Нет доступа к этой сдаче")
+        }
+        val course = academic.getCourse(courseId.toString(), token)
+        val submission = submissions.findById(submissionId).orElseThrow { NotFoundException("Сдача не найдена") }
+        // 403, а не 404: сдача существует, но запрошена в контексте чужого курса.
+        val courseLabIds =
+            academic
+                .getCourseLabs(courseId.toString(), token)
+                .mapNotNull { runCatching { UUID.fromString(it.id) }.getOrNull() }
+                .toSet()
+        if (submission.labId !in courseLabIds) {
+            forbidden("Сдача не относится к этому курсу")
+        }
+        if (role == ROLE_TEACHER) {
+            val context = identity.getStudentContext(submission.studentId.toString())
+            val activeGroups = course.groups.filter { it.removedAt == null }.mapTo(HashSet()) { it.groupId }
+            if (context.groupId == null || context.groupId !in activeGroups) {
+                forbidden("Студент не состоит в группе курса")
+            }
+        }
+        return submissionService.download(callerId, submissionId, null, isAdmin = true)
+    }
+
+    private fun requireProfileAccess(
+        course: CourseInfo,
+        context: StudentContext,
+        studentId: UUID,
+        callerId: UUID,
+        role: String,
+    ) {
+        when (role) {
+            ROLE_ADMIN -> Unit
+            ROLE_TEACHER -> {
+                val groupId = context.groupId
+                val attached =
+                    groupId != null && course.groups.any { it.groupId == groupId && it.removedAt == null }
+                if (!attached) forbidden("Студент не состоит в группе курса")
+            }
+            ROLE_STUDENT -> {
+                if (studentId != callerId) forbidden("Можно смотреть только свой профиль")
+            }
+            else -> forbidden("Нет доступа к профилю студента")
+        }
+    }
+
+    private fun forbidden(message: String): Nothing = throw ForbiddenException(message)
+
+    private fun courseLabs(
+        courseId: UUID,
+        token: String,
+    ): List<Pair<UUID, LabInfo>> =
+        academic
+            .getCourseLabs(courseId.toString(), token)
+            .mapNotNull { lab ->
+                runCatching { UUID.fromString(lab.id) }.getOrNull()?.let { it to lab }
+            }
+
+    private fun gradesByLab(
+        studentId: UUID,
+        labIds: List<UUID>,
+    ): Map<UUID, LabGrade> =
+        if (labIds.isEmpty()) {
+            emptyMap()
+        } else {
+            grades.findByStudentIdAndLabIdIn(studentId, labIds).associateBy { it.labId }
+        }
+
+    private fun commentsByLab(
+        studentId: UUID,
+        labIds: List<UUID>,
+    ): Map<UUID, List<GradeComment>> =
+        if (labIds.isEmpty()) {
+            emptyMap()
+        } else {
+            comments.findByStudentIdAndLabIdIn(studentId, labIds).groupBy { it.labId }
+        }
+
+    private fun submissionsByLab(
+        studentId: UUID,
+        labIds: List<UUID>,
+    ): Map<UUID, List<Submission>> =
+        if (labIds.isEmpty()) {
+            emptyMap()
+        } else {
+            submissions.findByStudentIdAndLabIdIn(studentId, labIds).groupBy { it.labId }
+        }
+
+    private fun defensesByLab(
+        studentId: UUID,
+        labIds: List<UUID>,
+    ): Map<UUID, DefenseSession> =
+        if (labIds.isEmpty()) {
+            emptyMap()
+        } else {
+            defenses.findByStudentIdAndLabIdIn(studentId, labIds).associateBy { it.labId }
+        }
+
+    private fun assignmentsByLab(
+        studentId: UUID,
+        labIds: List<UUID>,
+    ): Map<UUID, UUID> =
+        if (labIds.isEmpty()) {
+            emptyMap()
+        } else {
+            assignments
+                .findByStudentIdAndLabIdIn(studentId, labIds)
+                .associate { it.labId to it.variantId }
+        }
+
+    private fun levelsByLab(
+        studentId: UUID,
+        labIds: List<UUID>,
+    ): Map<UUID, UUID> =
+        if (labIds.isEmpty()) {
+            emptyMap()
+        } else {
+            levels
+                .findByStudentIdAndLabIdIn(studentId, labIds)
+                .associate { it.labId to it.labLevelId }
+        }
+
+    private fun publishedLabs(
+        rawGroupId: String?,
+        studentId: UUID,
+        labIds: List<UUID>,
+    ): Set<UUID> {
+        if (labIds.isEmpty()) return emptySet()
+        val groupId = rawGroupId?.let { runCatching { UUID.fromString(it) }.getOrNull() } ?: return emptySet()
+        val all = publications.findByGroupIdAndLabIdIn(groupId, labIds).mapTo(HashSet()) { it.labId }
+        studentPublications
+            .findByGroupIdAndLabIdIn(groupId, labIds)
+            .filter { it.studentId == studentId }
+            .forEach { all.add(it.labId) }
+        return all
+    }
+
+    private fun lookupLogins(authorIds: Set<UUID>): Map<String, String> {
+        if (authorIds.isEmpty()) return emptyMap()
+        val accounts = runCatching { identity.lookupAccounts(authorIds.map(UUID::toString)) }.getOrDefault(emptyList())
+        return accounts
+            .filter { it.id.isNotBlank() }
+            .associate { it.id to it.login.ifBlank { UNKNOWN_AUTHOR } }
+    }
+
+    @Suppress("LongParameterList")
+    private fun buildLab(
+        courseId: UUID,
+        studentId: UUID,
+        lab: LabInfo,
+        labId: UUID,
+        grade: LabGrade?,
+        comments: List<GradeComment>,
+        submissions: List<Submission>,
+        defense: DefenseSession?,
+        variantId: UUID?,
+        levelId: UUID?,
+        published: Boolean,
+        showUnpublished: Boolean,
+        logins: Map<String, String>,
+    ): ProfileLab {
+        val canSeeGrade = showUnpublished || published
+        val sortedSubmissions = submissions.sortedByDescending { it.seq }
+        val lastSubmissionAt =
+            sortedSubmissions.maxWithOrNull(compareBy<Submission> { it.createdAt }.thenBy { it.seq })?.createdAt?.toString()
+        val gradeDto =
+            grade
+                ?.takeIf { canSeeGrade }
+                ?.let {
+                    ProfileGrade(
+                        score = it.score.toPlainString(),
+                        published = published,
+                        generalComment = it.generalComment,
+                        author = authorOf(it.updatedByAccountId, logins),
+                    )
+                }
+        val commentDtos =
+            if (canSeeGrade) {
+                comments
+                    .sortedBy { it.createdAt }
+                    .map {
+                        ProfileComment(
+                            id = it.id.toString(),
+                            text = it.text,
+                            tone = it.tone,
+                            author = authorOf(it.authorAccountId, logins),
+                            createdAt = it.createdAt.toString(),
+                        )
+                    }
+            } else {
+                emptyList()
+            }
+        return ProfileLab(
+            id = lab.id.ifBlank { labId.toString() },
+            number = lab.number,
+            title = lab.title,
+            deadlineAt = lab.deadlineAt,
+            variant = variantOf(lab, variantId),
+            level = levelOf(lab, levelId),
+            attemptsCount = sortedSubmissions.size,
+            lastSubmissionAt = lastSubmissionAt,
+            grade = gradeDto,
+            comments = commentDtos,
+            defense = defense?.let { toDefense(it) },
+            submissions =
+                sortedSubmissions.map { s ->
+                    ProfileSubmission(
+                        id = s.id.toString(),
+                        seq = s.seq,
+                        createdAt = s.createdAt.toString(),
+                        files = storage.listFiles(storage.dirFor(studentId, s.labId, s.seq)),
+                        downloadUrl = "/api/v1/courses/$courseId/submissions/${s.id}/download",
+                    )
+                },
+        )
+    }
+
+    private fun variantOf(
+        lab: LabInfo,
+        variantId: UUID?,
+    ): ProfileVariant? {
+        if (variantId == null) return null
+        val variant =
+            lab.levels
+                .asSequence()
+                .flatMap { it.variants.asSequence() }
+                .firstOrNull { it.id == variantId.toString() }
+                ?: return null
+        return ProfileVariant(variant.number, variant.title)
+    }
+
+    private fun levelOf(
+        lab: LabInfo,
+        levelId: UUID?,
+    ): ProfileLevel? {
+        if (levelId == null) return null
+        val level = lab.levels.firstOrNull { it.id == levelId.toString() } ?: return null
+        return ProfileLevel(level.title)
+    }
+
+    private fun toDefense(session: DefenseSession): ProfileDefense {
+        val secondsLeft =
+            if (session.status == DefenseStatus.started.name) {
+                val started = session.startedAt
+                if (started == null) {
+                    null
+                } else {
+                    Duration
+                        .between(Instant.now(), started.plus(DefenseService.DURATION))
+                        .seconds
+                        .coerceAtLeast(0)
+                }
+            } else {
+                null
+            }
+        return ProfileDefense(
+            sessionId = session.id.toString(),
+            status = session.status,
+            readyReason = session.readyReason,
+            code = session.code,
+            assignmentMd = session.assignmentMd,
+            secondsLeft = secondsLeft,
+        )
+    }
+
+    private fun toStudent(
+        context: StudentContext,
+        studentId: UUID,
+    ): ProfileStudent =
+        ProfileStudent(
+            id = context.id.ifBlank { studentId.toString() },
+            studentNo = context.studentNo,
+            fullName = context.fullName,
+            groupId = context.groupId,
+            groupName = context.groupName,
+            status = context.status,
+            enrollmentYear = context.enrollmentYear,
+        )
+
+    private fun summary(labs: List<ProfileLab>): ProfileSummary {
+        val grades = labs.mapNotNull { it.grade }.mapNotNull { it.score.toDoubleOrNull() }
+        return ProfileSummary(
+            labsTotal = labs.size,
+            submitted = labs.count { it.submissions.isNotEmpty() },
+            graded = labs.count { it.grade != null },
+            averageScore = if (grades.isEmpty()) null else grades.average(),
+            defensesTotal = labs.count { it.defense != null },
+            defensesReady = labs.count { it.defense?.status == DefenseStatus.ready.name },
+        )
+    }
+
+    private fun authorOf(
+        authorId: UUID?,
+        logins: Map<String, String>,
+    ): ProfileAuthor? =
+        authorId?.let {
+            val key = it.toString()
+            ProfileAuthor(key, logins[key] ?: UNKNOWN_AUTHOR)
+        }
+
+    private fun normalizeRole(role: String): String = role.removePrefix("ROLE_").uppercase()
+
+    private companion object {
+        const val ROLE_ADMIN = "ADMIN"
+        const val ROLE_TEACHER = "TEACHER"
+        const val ROLE_STUDENT = "STUDENT"
+        const val UNKNOWN_AUTHOR = "—"
+    }
+}
--- a/services/progress-service/src/main/kotlin/ru/ysu/lms/progress/repo/CommentRepositories.kt
+++ b/services/progress-service/src/main/kotlin/ru/ysu/lms/progress/repo/CommentRepositories.kt
@@ -19,6 +19,11 @@ interface GradeCommentRepository : JpaRepository<GradeComment, UUID> {
        labId: UUID,
    ): List<GradeComment>

+    fun findByStudentIdAndLabIdIn(
+        studentId: UUID,
+        labIds: Collection<UUID>,
+    ): List<GradeComment>
+
    fun deleteByStudentIdAndLabId(
        studentId: UUID,
        labId: UUID,
--- a/services/progress-service/src/main/kotlin/ru/ysu/lms/progress/repo/DefenseSessionRepository.kt
+++ b/services/progress-service/src/main/kotlin/ru/ysu/lms/progress/repo/DefenseSessionRepository.kt
@@ -14,6 +14,11 @@ interface DefenseSessionRepository : JpaRepository<DefenseSession, UUID> {
        labId: UUID,
    ): DefenseSession?

+    fun findByStudentIdAndLabIdIn(
+        studentId: UUID,
+        labIds: Collection<UUID>,
+    ): List<DefenseSession>
+
    fun findByStudentId(studentId: UUID): List<DefenseSession>

    fun findByStatus(status: String): List<DefenseSession>
--- a/services/progress-service/src/main/kotlin/ru/ysu/lms/progress/repo/GradePublicationRepository.kt
+++ b/services/progress-service/src/main/kotlin/ru/ysu/lms/progress/repo/GradePublicationRepository.kt
@@ -10,4 +10,9 @@ interface GradePublicationRepository : JpaRepository<GradePublication, GradePubl
        labId: UUID,
        groupId: UUID,
    ): GradePublication?
+
+    fun findByGroupIdAndLabIdIn(
+        groupId: UUID,
+        labIds: Collection<UUID>,
+    ): List<GradePublication>
 }
--- a/services/progress-service/src/main/kotlin/ru/ysu/lms/progress/repo/GradePublicationStudentRepository.kt
+++ b/services/progress-service/src/main/kotlin/ru/ysu/lms/progress/repo/GradePublicationStudentRepository.kt
@@ -11,6 +11,11 @@ interface GradePublicationStudentRepository : JpaRepository<GradePublicationStud
        labId: UUID,
    ): List<GradePublicationStudent>

+    fun findByGroupIdAndLabIdIn(
+        groupId: UUID,
+        labIds: Collection<UUID>,
+    ): List<GradePublicationStudent>
+
    fun deleteByGroupIdAndLabId(
        groupId: UUID,
        labId: UUID,
--- a/services/progress-service/src/main/kotlin/ru/ysu/lms/progress/repo/LabGradeRepository.kt
+++ b/services/progress-service/src/main/kotlin/ru/ysu/lms/progress/repo/LabGradeRepository.kt
@@ -14,4 +14,9 @@ interface LabGradeRepository : JpaRepository<LabGrade, LabGradeKey> {
        studentId: UUID,
        labId: UUID,
    ): LabGrade?
+
+    fun findByStudentIdAndLabIdIn(
+        studentId: UUID,
+        labIds: Collection<UUID>,
+    ): List<LabGrade>
 }
--- a/services/progress-service/src/main/kotlin/ru/ysu/lms/progress/repo/StudentLabLevelRepository.kt
+++ b/services/progress-service/src/main/kotlin/ru/ysu/lms/progress/repo/StudentLabLevelRepository.kt
@@ -15,5 +15,10 @@ interface StudentLabLevelRepository : JpaRepository<StudentLabLevel, StudentLabL
        labId: UUID,
    ): StudentLabLevel?

+    fun findByStudentIdAndLabIdIn(
+        studentId: UUID,
+        labIds: Collection<UUID>,
+    ): List<StudentLabLevel>
+
    fun deleteByLabId(labId: UUID)
 }
--- a/services/progress-service/src/main/kotlin/ru/ysu/lms/progress/repo/SubmissionRepository.kt
+++ b/services/progress-service/src/main/kotlin/ru/ysu/lms/progress/repo/SubmissionRepository.kt
@@ -12,6 +12,11 @@ interface SubmissionRepository : JpaRepository<Submission, UUID> {
        labId: UUID,
    ): List<Submission>

+    fun findByStudentIdAndLabIdIn(
+        studentId: UUID,
+        labIds: Collection<UUID>,
+    ): List<Submission>
+
    fun findByLabIdOrderByCreatedAtDesc(labId: UUID): List<Submission>

    fun findFirstByStudentIdAndLabIdOrderBySeqDesc(
--- a/services/progress-service/src/main/kotlin/ru/ysu/lms/progress/repo/VariantAssignmentRepository.kt
+++ b/services/progress-service/src/main/kotlin/ru/ysu/lms/progress/repo/VariantAssignmentRepository.kt
@@ -14,5 +14,10 @@ interface VariantAssignmentRepository : JpaRepository<VariantAssignment, UUID> {
        labId: UUID,
    ): VariantAssignment?

+    fun findByStudentIdAndLabIdIn(
+        studentId: UUID,
+        labIds: Collection<UUID>,
+    ): List<VariantAssignment>
+
    fun deleteByLabId(labId: UUID)
 }
--- a/services/progress-service/src/main/resources/application.yml
+++ b/services/progress-service/src/main/resources/application.yml
@@ -37,4 +37,6 @@ lms:
  academic:
    base-url: ${LMS_ACADEMIC_URI:http://localhost:8082}
  identity:
-    base-url: ${LMS_IDENTITY_URI:http://localhost:8081}
+    base-url: ${LMS_IDENTITY_URI:http://localhost:8081}
+  internal:
+    token: ${LMS_INTERNAL_TOKEN:dev-internal-token}
--- a/services/progress-service/src/test/kotlin/ru/ysu/lms/progress/StudentProfileIntegrationTest.kt
+++ b/services/progress-service/src/test/kotlin/ru/ysu/lms/progress/StudentProfileIntegrationTest.kt
@@ -0,0 +1,327 @@
+package ru.ysu.lms.progress
+
+import org.assertj.core.api.Assertions.assertThat
+import org.assertj.core.api.Assertions.assertThatThrownBy
+import org.junit.jupiter.api.Test
+import org.mockito.ArgumentMatchers.anyCollection
+import org.mockito.Mockito.`when`
+import org.springframework.beans.factory.annotation.Autowired
+import org.springframework.boot.test.context.SpringBootTest
+import org.springframework.boot.testcontainers.service.connection.ServiceConnection
+import org.springframework.test.context.bean.override.mockito.MockitoBean
+import org.testcontainers.junit.jupiter.Container
+import org.testcontainers.junit.jupiter.Testcontainers
+import org.testcontainers.postgresql.PostgreSQLContainer
+import ru.ysu.lms.common.ForbiddenException
+import ru.ysu.lms.progress.domain.GradePublicationStudent
+import ru.ysu.lms.progress.domain.StudentLabLevel
+import ru.ysu.lms.progress.domain.Submission
+import ru.ysu.lms.progress.domain.VariantAssignment
+import ru.ysu.lms.progress.profile.StudentProfileService
+import ru.ysu.lms.progress.repo.GradePublicationStudentRepository
+import ru.ysu.lms.progress.repo.StudentLabLevelRepository
+import ru.ysu.lms.progress.repo.SubmissionRepository
+import ru.ysu.lms.progress.repo.VariantAssignmentRepository
+import java.math.BigDecimal
+import java.time.Instant
+import java.util.UUID
+
+/**
+ * Профиль студента курса: реальная PostgreSQL/Flyway, academic и identity подменены.
+ * Проверяются доступ, публикация оценок, все попытки сдач и скачивание.
+ */
+@Testcontainers
+@SpringBootTest(properties = ["lms.submissions.dir=build/test-profile-submissions"])
+class StudentProfileIntegrationTest {
+    companion object {
+        @Container
+        @ServiceConnection
+        @JvmStatic
+        val postgres = PostgreSQLContainer("postgres:18")
+
+        private const val TEACHER_TOKEN = "teacher-token"
+        private const val STUDENT_TOKEN = "student-token"
+        private const val ADMIN_TOKEN = "admin-token"
+    }
+
+    @Autowired
+    private lateinit var profiles: StudentProfileService
+
+    @Autowired
+    private lateinit var grades: GradeService
+
+    @Autowired
+    private lateinit var submissions: SubmissionRepository
+
+    @Autowired
+    private lateinit var studentPublications: GradePublicationStudentRepository
+
+    @Autowired
+    private lateinit var assignments: VariantAssignmentRepository
+
+    @Autowired
+    private lateinit var levels: StudentLabLevelRepository
+
+    @Autowired
+    private lateinit var storage: SubmissionStorage
+
+    @MockitoBean
+    private lateinit var academic: AcademicClient
+
+    @MockitoBean
+    private lateinit var identity: IdentityClient
+
+    @Test
+    fun `teacher sees unpublished grade, authors and all submission attempts`() {
+        val courseId = UUID.randomUUID()
+        val groupId = UUID.randomUUID()
+        val studentId = UUID.randomUUID()
+        val labId = UUID.randomUUID()
+        val variantId = UUID.randomUUID()
+        val levelId = UUID.randomUUID()
+        val authorId = UUID.randomUUID()
+
+        stubCourse(courseId, groupId, TEACHER_TOKEN, listOf(labInfo(labId, 1, variantId, levelId)))
+        stubStudent(studentId, groupId)
+        assignments.save(VariantAssignment(studentId = studentId, labId = labId, variantId = variantId))
+        levels.save(StudentLabLevel(studentId = studentId, labId = labId, labLevelId = levelId))
+        `when`(identity.lookupAccounts(anyCollection())).thenReturn(
+            listOf(AccountInfo(authorId.toString(), "teacher_login", "TEACHER")),
+        )
+        grades.setGrade(
+            GradeSetRequest(
+                studentId = studentId.toString(),
+                labId = labId.toString(),
+                score = BigDecimal("4.5"),
+                comments = listOf(CommentInput("Хорошая работа", "positive")),
+                generalComment = "Зачтено",
+            ),
+            authorId,
+        )
+        val first = saveSubmission(studentId, labId, 1, "2026-10-01T10:00:00Z", "main.c")
+        val second = saveSubmission(studentId, labId, 2, "2026-10-02T10:00:00Z", "main.c", "README.md")
+
+        val profile = profiles.profile(courseId, studentId, UUID.randomUUID(), "TEACHER", TEACHER_TOKEN)
+
+        assertThat(profile.course.title).isEqualTo("Алгоритмы")
+        assertThat(profile.student.groupId).isEqualTo(groupId.toString())
+        assertThat(profile.summary.labsTotal).isEqualTo(1)
+        assertThat(profile.summary.submitted).isEqualTo(1)
+        assertThat(profile.summary.graded).isEqualTo(1)
+        assertThat(profile.summary.averageScore).isEqualTo(4.5)
+        assertThat(profile.labs).hasSize(1)
+        val lab = profile.labs.single()
+        assertThat(lab.variant?.number).isEqualTo("7")
+        assertThat(lab.level?.title).isEqualTo("Базовый")
+        assertThat(lab.attemptsCount).isEqualTo(2)
+        assertThat(lab.submissions.map { it.seq }).containsExactly(2, 1)
+        assertThat(lab.submissions.first().files).containsExactlyInAnyOrder("main.c", "README.md")
+        assertThat(lab.submissions.first().downloadUrl)
+            .isEqualTo("/api/v1/courses/$courseId/submissions/${second.id}/download")
+        val grade = checkNotNull(lab.grade)
+        assertThat(grade.score).isEqualTo("4.5")
+        assertThat(grade.published).isFalse()
+        assertThat(grade.author?.login).isEqualTo("teacher_login")
+        assertThat(lab.comments).hasSize(1)
+        val commentAuthor = lab.comments.single().author
+        assertThat(commentAuthor?.login).isEqualTo("teacher_login")
+
+        val (bytes, name) =
+            profiles.downloadSubmission(courseId, second.id, UUID.randomUUID(), "TEACHER", TEACHER_TOKEN)
+        assertThat(name).endsWith(".zip")
+        assertThat(bytes).isNotEmpty()
+        assertThat(first.id).isNotEqualTo(second.id)
+    }
+
+    @Test
+    fun `student sees only published grade and comments of own profile`() {
+        val courseId = UUID.randomUUID()
+        val groupId = UUID.randomUUID()
+        val studentId = UUID.randomUUID()
+        val hiddenLab = UUID.randomUUID()
+        val publishedLab = UUID.randomUUID()
+
+        stubCourse(
+            courseId,
+            groupId,
+            STUDENT_TOKEN,
+            listOf(
+                labInfo(hiddenLab, 1, UUID.randomUUID(), UUID.randomUUID()),
+                labInfo(publishedLab, 2, UUID.randomUUID(), UUID.randomUUID()),
+            ),
+        )
+        stubStudent(studentId, groupId)
+        grades.setGrade(gradeRequest(studentId, hiddenLab, "2"))
+        grades.setGrade(gradeRequest(studentId, publishedLab, "5"))
+        studentPublications.save(GradePublicationStudent(groupId, publishedLab, studentId))
+
+        val profile = profiles.profile(courseId, studentId, studentId, "STUDENT", STUDENT_TOKEN)
+
+        val hidden = profile.labs.first { it.id == hiddenLab.toString() }
+        val published = profile.labs.first { it.id == publishedLab.toString() }
+        assertThat(hidden.grade).isNull()
+        assertThat(hidden.comments).isEmpty()
+        assertThat(published.grade?.score).isEqualTo("5.0")
+        assertThat(published.grade?.published).isTrue()
+        assertThat(published.comments).hasSize(1)
+        assertThat(profile.summary.graded).isEqualTo(1)
+        assertThat(profile.summary.averageScore).isEqualTo(5.0)
+
+        assertThatThrownBy {
+            profiles.profile(courseId, UUID.randomUUID(), studentId, "STUDENT", STUDENT_TOKEN)
+        }.isInstanceOf(ForbiddenException::class.java)
+    }
+
+    @Test
+    fun `teacher of another course gets forbidden`() {
+        val courseId = UUID.randomUUID()
+        `when`(academic.getCourse(courseId.toString(), "foreign-token"))
+            .thenThrow(ForbiddenException("Курс недоступен"))
+
+        assertThatThrownBy {
+            profiles.profile(courseId, UUID.randomUUID(), UUID.randomUUID(), "TEACHER", "foreign-token")
+        }.isInstanceOf(ForbiddenException::class.java)
+    }
+
+    @Test
+    fun `teacher cannot read or download student from group outside course but admin can`() {
+        val courseId = UUID.randomUUID()
+        val courseGroup = UUID.randomUUID()
+        val otherGroup = UUID.randomUUID()
+        val studentId = UUID.randomUUID()
+        val labId = UUID.randomUUID()
+
+        stubCourse(courseId, courseGroup, TEACHER_TOKEN, listOf(labInfo(labId, 1, UUID.randomUUID(), UUID.randomUUID())))
+        stubCourse(courseId, courseGroup, ADMIN_TOKEN, listOf(labInfo(labId, 1, UUID.randomUUID(), UUID.randomUUID())))
+        `when`(identity.getStudentContext(studentId.toString()))
+            .thenReturn(studentContext(studentId, otherGroup))
+        grades.setGrade(gradeRequest(studentId, labId, "4"))
+        val submission = saveSubmission(studentId, labId, 1, "2026-10-03T10:00:00Z", "main.c")
+
+        assertThatThrownBy {
+            profiles.profile(courseId, studentId, UUID.randomUUID(), "TEACHER", TEACHER_TOKEN)
+        }.isInstanceOf(ForbiddenException::class.java)
+        assertThatThrownBy {
+            profiles.downloadSubmission(courseId, submission.id, UUID.randomUUID(), "TEACHER", TEACHER_TOKEN)
+        }.isInstanceOf(ForbiddenException::class.java)
+
+        val adminProfile = profiles.profile(courseId, studentId, UUID.randomUUID(), "ADMIN", ADMIN_TOKEN)
+        assertThat(adminProfile.student.groupId).isEqualTo(otherGroup.toString())
+        val (bytes, _) =
+            profiles.downloadSubmission(courseId, submission.id, UUID.randomUUID(), "ADMIN", ADMIN_TOKEN)
+        assertThat(bytes).isNotEmpty()
+    }
+
+    @Test
+    fun `download rejects submission from another course lab and allows current course lab`() {
+        val courseId = UUID.randomUUID()
+        val groupId = UUID.randomUUID()
+        val studentId = UUID.randomUUID()
+        val courseLabId = UUID.randomUUID()
+        val foreignLabId = UUID.randomUUID()
+
+        stubCourse(courseId, groupId, TEACHER_TOKEN, listOf(labInfo(courseLabId, 1, UUID.randomUUID(), UUID.randomUUID())))
+        stubStudent(studentId, groupId)
+        val foreign = saveSubmission(studentId, foreignLabId, 1, "2026-10-04T10:00:00Z", "main.c")
+        val own = saveSubmission(studentId, courseLabId, 1, "2026-10-05T10:00:00Z", "main.c")
+
+        assertThatThrownBy {
+            profiles.downloadSubmission(courseId, foreign.id, UUID.randomUUID(), "TEACHER", TEACHER_TOKEN)
+        }.isInstanceOf(ForbiddenException::class.java)
+
+        val (bytes, name) =
+            profiles.downloadSubmission(courseId, own.id, UUID.randomUUID(), "TEACHER", TEACHER_TOKEN)
+        assertThat(bytes).isNotEmpty()
+        assertThat(name).endsWith(".zip")
+    }
+
+    private fun stubCourse(
+        courseId: UUID,
+        groupId: UUID,
+        token: String,
+        labList: List<LabInfo> = listOf(labInfo(UUID.randomUUID(), 1, UUID.randomUUID(), UUID.randomUUID())),
+    ) {
+        `when`(academic.getCourse(courseId.toString(), token)).thenReturn(
+            CourseInfo(
+                id = courseId.toString(),
+                courseNo = 42,
+                title = "Алгоритмы",
+                status = "active",
+                groups = listOf(CourseGroupInfo(groupId.toString(), null)),
+            ),
+        )
+        `when`(academic.getCourseLabs(courseId.toString(), token)).thenReturn(labList)
+    }
+
+    private fun stubStudent(
+        studentId: UUID,
+        groupId: UUID,
+    ) {
+        `when`(identity.getStudentContext(studentId.toString()))
+            .thenReturn(studentContext(studentId, groupId))
+    }
+
+    private fun studentContext(
+        studentId: UUID,
+        groupId: UUID,
+    ): StudentContext =
+        StudentContext(
+            id = studentId.toString(),
+            login = "student",
+            fullName = "Иванов Иван",
+            studentNo = "2024-001",
+            status = "active",
+            enrollmentYear = 2024,
+            groupId = groupId.toString(),
+            groupName = "Группа",
+        )
+
+    private fun labInfo(
+        labId: UUID,
+        number: Int,
+        variantId: UUID,
+        levelId: UUID,
+    ): LabInfo =
+        LabInfo(
+            id = labId.toString(),
+            number = number,
+            title = "Лабораторная $number",
+            deadlineAt = "2026-12-01T00:00:00Z",
+            levels =
+                listOf(
+                    LevelInfo(
+                        id = levelId.toString(),
+                        code = "base",
+                        title = "Базовый",
+                        variants = listOf(VariantInfo(id = variantId.toString(), number = "7", title = "Вариант 7")),
+                    ),
+                ),
+        )
+
+    private fun gradeRequest(
+        studentId: UUID,
+        labId: UUID,
+        score: String,
+    ): GradeSetRequest =
+        GradeSetRequest(
+            studentId = studentId.toString(),
+            labId = labId.toString(),
+            score = BigDecimal(score),
+            comments = listOf(CommentInput("Комментарий", "neutral")),
+            generalComment = "",
+        )
+
+    private fun saveSubmission(
+        studentId: UUID,
+        labId: UUID,
+        seq: Int,
+        createdAt: String,
+        vararg files: String,
+    ): Submission {
+        val stored = storage.store(studentId, labId, seq, files.map { it to "code".toByteArray() })
+        assertThat(stored.files).hasSize(files.size)
+        return submissions.save(
+            Submission(studentId = studentId, labId = labId, seq = seq, createdAt = Instant.parse(createdAt)),
+        )
+    }
+}