/* TODO (andgein): move it to GroupController */
public async Task <bool> CanRevokeAccessAsync(int groupId, string userId, string revokedById)
{
var group = await groupsRepo.FindGroupByIdAsync(groupId).ConfigureAwait(false) ?? throw new ArgumentNullException($"Can't find group with id={groupId}");
var isCourseAdmin = await courseRolesRepo.HasUserAccessToCourse(revokedById, @group.CourseId, CourseRoleType.CourseAdmin).ConfigureAwait(false);
if (group.OwnerId == revokedById || isCourseAdmin)
{
return(true);
}
return(db.GroupAccesses.Any(a => a.GroupId == groupId && a.UserId == userId && a.GrantedById == revokedById && a.IsEnabled));
}
public async Task <ActionResult <TempCourseUpdateResponse> > CreateCourse([FromRoute] string courseId)
{
var tmpCourseId = GetTmpCourseId(courseId, UserId);
if (!DontCheckBaseCourseExistsOnCreate && !await courseManager.HasCourseAsync(courseId))
{
return(new TempCourseUpdateResponse
{
ErrorType = ErrorType.NotFound,
Message = $"Не существует курса {courseId}"
});
}
if (!await courseRolesRepo.HasUserAccessToCourse(UserId, courseId, CourseRoleType.CourseAdmin))
{
return(new TempCourseUpdateResponse
{
ErrorType = ErrorType.Forbidden,
Message = $"Необходимо быть администратором курса {courseId}"
});
}
var tmpCourse = await tempCoursesRepo.FindAsync(tmpCourseId);
if (tmpCourse != null)
{
return(new TempCourseUpdateResponse
{
ErrorType = ErrorType.Conflict,
Message = $"Ваша временная версия курса {courseId} уже существует с id {tmpCourseId}."
});
}
var versionId = Guid.NewGuid();
var courseTitle = "Заготовка временного курса";
if (!courseManager.TryCreateTempCourse(tmpCourseId, courseTitle, versionId))
{
throw new Exception();
}
var result = await tempCoursesRepo.AddTempCourseAsync(tmpCourseId, UserId);
var loadingTime = result.LoadingTime;
await courseRolesRepo.ToggleRole(tmpCourseId, UserId, CourseRoleType.CourseAdmin, UserId, "Создал временный курс");
return(new TempCourseUpdateResponse
{
Message = $"Временный курс с id {tmpCourseId} успешно создан.",
LastUploadTime = loadingTime
});
}
public async Task <ActionResult <ApiSlideInfo> > SlideInfo([FromRoute] Course course, [FromRoute] Guid slideId)
{
var isInstructor = await courseRolesRepo.HasUserAccessToCourse(User.GetUserId(), course.Id, CourseRoleType.Instructor).ConfigureAwait(false);
var slide = course?.FindSlideById(slideId, isInstructor);
if (slide == null)
{
var instructorNote = course?.FindInstructorNoteById(slideId);
if (instructorNote != null && isInstructor)
{
slide = instructorNote.Slide;
}
}
if (slide == null)
{
return(NotFound(new { status = "error", message = "Course or slide not found" }));
}
var userId = User.GetUserId();
var getSlideMaxScoreFunc = await BuildGetSlideMaxScoreFunc(solutionsRepo, userQuizzesRepo, visitsRepo, groupsRepo, course, userId);
var getGitEditLinkFunc = await BuildGetGitEditLinkFunc(userId, course, courseRolesRepo, coursesRepo);
var baseUrl = CourseUnitUtils.GetDirectoryRelativeWebPath(slide.Info.SlideFile);
var slideRenderContext = new SlideRenderContext(course.Id, slide, UserId, baseUrl, !isInstructor,
course.Settings.VideoAnnotationsGoogleDoc, Url);
return(await slideRenderer.BuildSlideInfo(slideRenderContext, getSlideMaxScoreFunc, getGitEditLinkFunc));
}
public async Task <Comment> AddCommentAsync(string authorId, string courseId, Guid slideId, int parentCommentId, bool isForInstructorsOnly, string commentText)
{
var commentsPolicy = await commentPoliciesRepo.GetCommentsPolicyAsync(courseId).ConfigureAwait(false);
var isInstructor = await courseRolesRepo.HasUserAccessToCourse(authorId, courseId, CourseRoleType.Instructor).ConfigureAwait(false);
var isApproved = commentsPolicy.ModerationPolicy == CommentModerationPolicy.Postmoderation || isInstructor;
/* Instructors' replies are automatically correct */
var isReply = parentCommentId != -1;
var isCorrectAnswer = isReply && isInstructor && !isForInstructorsOnly;
var comment = new Comment
{
AuthorId = authorId,
CourseId = courseId,
SlideId = slideId,
ParentCommentId = parentCommentId,
Text = commentText,
IsApproved = isApproved,
IsCorrectAnswer = isCorrectAnswer,
IsForInstructorsOnly = isForInstructorsOnly,
PublishTime = DateTime.Now
};
db.Comments.Add(comment);
await db.SaveChangesAsync().ConfigureAwait(false);
return(await FindCommentByIdAsync(comment.Id).ConfigureAwait(false));
}
public async Task <ActionResult <RunSolutionResponse> > RunSolution(
[FromRoute] Course course,
[FromRoute] Guid slideId,
[FromBody] RunSolutionParameters parameters,
[FromQuery] Language language)
{
var courseId = course.Id;
/* Check that no checking solution by this user in last time */
var delta = TimeSpan.FromSeconds(30);
var halfMinuteAgo = DateTime.Now.Subtract(delta);
if (await userSolutionsRepo.IsCheckingSubmissionByUser(courseId, slideId, User.Identity.GetUserId(), halfMinuteAgo, DateTime.MaxValue))
{
return(Json(new RunSolutionResponse(SolutionRunStatus.Ignored)
{
Message = $"Ваше решение по этой задаче уже проверяется. Дождитесь окончания проверки. Вы можете отправить новое решение через {delta.Seconds} секунд."
}));
}
var code = parameters.Solution;
if (code.Length > TextsRepo.MaxTextSize)
{
return(Json(new RunSolutionResponse(SolutionRunStatus.Ignored)
{
Message = "Слишком длинный код"
}));
}
var isInstructor = await courseRolesRepo.HasUserAccessToCourse(UserId, courseId, CourseRoleType.Instructor);
var exerciseSlide = (await courseManager.FindCourseAsync(courseId))?.FindSlideById(slideId, isInstructor) as ExerciseSlide;
if (exerciseSlide == null)
{
return(NotFound(new ErrorResponse("Slide not found")));
}
var result = await CheckSolution(
courseId, exerciseSlide, code, language, UserId, User.Identity.Name,
waitUntilChecked : true, saveSubmissionOnCompileErrors : false
).ConfigureAwait(false);
return(result);
}
public async Task <List <Guid> > GetVisibleUnitIds(Course course, string userId)
{
var canSeeEverything = await courseRolesRepo.HasUserAccessToCourse(userId, course.Id, CourseRoleType.Tester);
if (canSeeEverything)
{
return(course.GetUnitsNotSafe().Select(u => u.Id).ToList());
}
return(await GetPublishedUnitIds(course));
}
protected async Task <bool> CanUserSeeNotApprovedCommentsAsync(string userId, string courseId)
{
if (string.IsNullOrEmpty(userId))
{
return(false);
}
var hasCourseAccessForCommentEditing = await coursesRepo.HasCourseAccess(userId, courseId, CourseAccessType.EditPinAndRemoveComments).ConfigureAwait(false);
var isCourseAdmin = await courseRolesRepo.HasUserAccessToCourse(userId, courseId, CourseRoleType.CourseAdmin).ConfigureAwait(false);
return(isCourseAdmin || hasCourseAccessForCommentEditing);
}
public async Task <IActionResult> ChangeOwner(int groupId, [FromBody] ChangeOwnerParameters parameters)
{
var group = await groupsRepo.FindGroupByIdAsync(groupId).ConfigureAwait(false);
var isCourseAdmin = await courseRolesRepo.HasUserAccessToCourse(UserId, group.CourseId, CourseRoleType.CourseAdmin).ConfigureAwait(false);
var canChangeOwner = group.OwnerId == UserId || isCourseAdmin;
if (!canChangeOwner)
{
return(StatusCode((int)HttpStatusCode.Forbidden, new ErrorResponse("You can't change the owner of this group. Only current owner and course admin can change the owner.")));
}
/* New owner should exist and be a course instructor */
var user = await usersRepo.FindUserById(parameters.OwnerId).ConfigureAwait(false);
if (user == null)
{
return(NotFound(new ErrorResponse($"Can't find user with id {parameters.OwnerId}")));
}
var isInstructor = await courseRolesRepo.HasUserAccessToCourse(parameters.OwnerId, group.CourseId, CourseRoleType.Instructor).ConfigureAwait(false);
if (!isInstructor)
{
return(NotFound(new ErrorResponse($"User {parameters.OwnerId} is not an instructor of course {group.CourseId}")));
}
/* Grant full access to previous owner */
await groupAccessesRepo.GrantAccessAsync(groupId, group.OwnerId, GroupAccessType.FullAccess, UserId).ConfigureAwait(false);
/* Change owner */
await groupsRepo.ChangeGroupOwnerAsync(groupId, parameters.OwnerId).ConfigureAwait(false);
/* Revoke access from new owner */
await groupAccessesRepo.RevokeAccessAsync(groupId, parameters.OwnerId).ConfigureAwait(false);
return(Ok(new SuccessResponseWithMessage($"New group's owner is {parameters.OwnerId}")));
}
protected override async Task HandleRequirementAsync(AuthorizationHandlerContext context, CourseAccessRequirement requirement)
{
/* Get MVC context. See https://docs.microsoft.com/en-US/aspnet/core/security/authorization/policies#accessing-mvc-request-context-in-handlers */
if (!(context.Resource is AuthorizationFilterContext mvcContext))
{
log.Error("Can't get MVC context in CourseRoleAuthenticationHandler");
context.Fail();
return;
}
var courseId = GetCourseIdFromRequestAsync(mvcContext);
if (string.IsNullOrEmpty(courseId))
{
context.Fail();
return;
}
if (!context.User.Identity.IsAuthenticated)
{
context.Fail();
return;
}
var userId = context.User.GetUserId();
var user = await usersRepo.FindUserById(userId).ConfigureAwait(false);
if (user == null)
{
context.Fail();
return;
}
if (usersRepo.IsSystemAdministrator(user))
{
context.Succeed(requirement);
return;
}
var isCourseAdmin = await courseRolesRepo.HasUserAccessToCourse(userId, courseId, CourseRoleType.CourseAdmin).ConfigureAwait(false);
if (isCourseAdmin || await coursesRepo.HasCourseAccess(userId, courseId, requirement.CourseAccessType).ConfigureAwait(false))
{
context.Succeed(requirement);
}
else
{
context.Fail();
}
}
public async Task <ActionResult <ReviewCommentResponse> > AddExerciseCodeReviewComment([FromRoute] int reviewId, [FromBody] ReviewCreateCommentParameters parameters)
{
var review = await slideCheckingsRepo.FindExerciseCodeReviewById(reviewId);
var submissionUserId = review.ExerciseCheckingId.HasValue ? review.ExerciseChecking.UserId : review.Submission.UserId;
var submissionCourseId = review.ExerciseCheckingId.HasValue ? review.ExerciseChecking.CourseId : review.Submission.CourseId;
var isInstructor = await courseRolesRepo.HasUserAccessToCourse(UserId, submissionCourseId, CourseRoleType.Instructor);
if (submissionUserId != UserId && !isInstructor)
{
return(StatusCode((int)HttpStatusCode.Forbidden, new ErrorResponse("You can't comment this review")));
}
var canReply = isInstructor || !review.Author.IsUlearnBot() || review.NotDeletedComments.Any(c => !c.Author.IsUlearnBot());
if (!canReply)
{
return(StatusCode((int)HttpStatusCode.Forbidden, new ErrorResponse("You can't reply this review")));
}
var comment = await slideCheckingsRepo.AddExerciseCodeReviewComment(UserId, reviewId, parameters.Text);
if (review.ExerciseCheckingId.HasValue && review.ExerciseChecking.IsChecked)
{
var course = await courseManager.FindCourseAsync(submissionCourseId);
var slideId = review.ExerciseChecking.SlideId;
var unit = course?.FindUnitBySlideId(slideId, isInstructor);
if (unit != null && await unitsRepo.IsUnitVisibleForStudents(course, unit.Id))
{
await NotifyAboutCodeReviewComment(comment);
}
}
return(ReviewCommentResponse.Build(comment));
}
public async Task <ActionResult <FlashcardsStatistics> > FlashcardsStatistics([FromQuery(Name = "course_id")][BindRequired]
string courseId)
{
var course = await courseManager.FindCourseAsync(courseId);
if (course == null)
{
return(NotFound());
}
var hasUserAccessToCourse = await courseRolesRepo.HasUserAccessToCourse(UserId, course.Id, CourseRoleType.Instructor);
if (!hasUserAccessToCourse)
{
return(BadRequest($"You don't have access to course with id {course.Id}"));
}
var flashcardVisitsByCourse = await usersFlashcardsVisitsRepo.GetUserFlashcardsVisitsAsync(course.Id);
var statistics = ToFlashcardsStatistics(flashcardVisitsByCourse, course);
return(statistics);
}
public async Task <ActionResult <CourseExercisesStatisticsResponse> > CourseStatistics([FromQuery(Name = "course_id")][BindRequired]
string courseId, int count = 10000, DateTime?from = null, DateTime?to = null)
{
var course = await courseManager.FindCourseAsync(courseId);
if (course == null)
{
return(NotFound());
}
if (!from.HasValue)
{
from = DateTime.MinValue;
}
if (!to.HasValue)
{
to = DateTime.MaxValue;
}
count = Math.Min(count, 10000);
var isInstructor = await courseRolesRepo.HasUserAccessToCourse(UserId, course.Id, CourseRoleType.Instructor).ConfigureAwait(false);
var exerciseSlides = course.GetSlides(isInstructor).OfType <ExerciseSlide>().ToList();
/* TODO (andgein): I can't select all submissions because ApplicationUserId column doesn't exist in database (ApplicationUser_Id exists).
* We should remove this column after EF Core 2.1 release (and remove tuples here)
*/
var submissions = await userSolutionsRepo.GetAllSubmissions(course.Id, includeManualAndAutomaticCheckings : false)
.Where(s => s.Timestamp >= from && s.Timestamp <= to)
.OrderByDescending(s => s.Timestamp)
.Take(count)
.Select(s => Tuple.Create(s.SlideId, s.AutomaticCheckingIsRightAnswer, s.Timestamp))
.ToListAsync().ConfigureAwait(false);
var getSlideMaxScoreFunc = await BuildGetSlideMaxScoreFunc(solutionsRepo, userQuizzesRepo, visitsRepo, groupsRepo, course, User.GetUserId());
var getGitEditLinkFunc = await BuildGetGitEditLinkFunc(User.GetUserId(), course, courseRolesRepo, coursesRepo);
const int daysLimit = 30;
var result = new CourseExercisesStatisticsResponse
{
AnalyzedSubmissionsCount = submissions.Count,
Exercises = exerciseSlides.Select(
slide =>
{
/* Statistics for this exercise slide: */
var exerciseSubmissions = submissions.Where(s => s.Item1 == slide.Id).ToList();
return(new OneExerciseStatistics
{
Exercise = slideRenderer.BuildShortSlideInfo(course.Id, slide, getSlideMaxScoreFunc, getGitEditLinkFunc, Url),
SubmissionsCount = exerciseSubmissions.Count,
AcceptedCount = exerciseSubmissions.Count(s => s.Item2),
/* Select last 30 (`datesLimit`) dates */
LastDates = exerciseSubmissions.GroupBy(s => s.Item3.Date).OrderByDescending(g => g.Key).Take(daysLimit).ToDictionary(
/* Date: */
g => g.Key,
/* Statistics for this date: */
g => new OneExerciseStatisticsForDate
{
SubmissionsCount = g.Count(),
AcceptedCount = g.Count(s => s.Item2)
}
)
});
}).ToList()
};
return(result);
}
public async Task <ActionResult <UsersSearchResponse> > Search([FromQuery] UsersSearchParameters parameters)
{
var words = parameters.Query?.Split(' ', '\t').ToList() ?? new List <string>();
if (words.Count > 10)
{
return(BadRequest(new ErrorResponse("Too many words in query")));
}
var currentUser = await usersRepo.FindUserById(UserId).ConfigureAwait(false);
var isSystemAdministrator = usersRepo.IsSystemAdministrator(currentUser);
if (!string.IsNullOrEmpty(parameters.CourseId))
{
if (!parameters.CourseRoleType.HasValue)
{
return(BadRequest(new ErrorResponse("You should specify course_role with course_id")));
}
if (parameters.CourseRoleType == CourseRoleType.Student)
{
return(BadRequest(new ErrorResponse("You can not search students by this method: there are too many students")));
}
/* Only instructors can search by course role */
var isInstructor = await courseRolesRepo.HasUserAccessToCourse(UserId, parameters.CourseId, CourseRoleType.Instructor).ConfigureAwait(false);
if (!isInstructor)
{
return(StatusCode((int)HttpStatusCode.Unauthorized, new ErrorResponse("Only instructors can search by course role")));
}
}
else if (parameters.CourseRoleType.HasValue)
{
/* Only sys-admins can search all instructors or all course-admins */
if (!isSystemAdministrator)
{
return(StatusCode((int)HttpStatusCode.Unauthorized, new ErrorResponse("Only system administrator can search by course role without specified course_id")));
}
}
if (parameters.LmsRoleType.HasValue)
{
if (!isSystemAdministrator)
{
return(StatusCode((int)HttpStatusCode.Unauthorized, new ErrorResponse("Only system administrator can search by lms role")));
}
}
var request = new UserSearchRequest
{
CurrentUser = currentUser,
Words = words,
CourseId = parameters.CourseId,
MinCourseRoleType = parameters.CourseRoleType,
LmsRole = parameters.LmsRoleType,
};
/* Start the search!
* First of all we will try to find `strict` users: users with strict match for pattern. These users will be at first place in the response.
*/
var strictUsers = await userSearcher.SearchUsersAsync(request, strict : true, offset : 0, count : parameters.Offset + parameters.Count).ConfigureAwait(false);
var users = strictUsers.ToList();
/* If strict users count is enough for answer, just take needed piece of list */
if (users.Count >= parameters.Offset + parameters.Count)
{
users = users.Skip(parameters.Offset).Take(parameters.Count).ToList();
}
else
{
/* If there is part of strict users which we should return, then cut off it */
if (parameters.Offset < users.Count)
{
users = users.Skip(parameters.Offset).ToList();
}
else
{
users.Clear();
}
/*
* (strict users) (non-strict users)
* 0 1 2 3 4 5 6
* ^ ^
* offset offset+count
*/
var nonStrictUsers = await userSearcher.SearchUsersAsync(request, strict : false, offset : parameters.Offset - strictUsers.Count, count : parameters.Count - users.Count).ConfigureAwait(false);
/* Add all non-strict users if there is no this user in strict users list */
foreach (var user in nonStrictUsers)
{
var alreadyExistUser = strictUsers.FirstOrDefault(u => u.User.Id == user.User.Id);
if (alreadyExistUser != null)
{
alreadyExistUser.Fields.UnionWith(user.Fields);
}
else
{
users.Add(user);
}
}
}
var instructors = await courseRolesRepo.GetListOfUsersWithCourseRole(CourseRoleType.Instructor, null, true).ConfigureAwait(false);
var currentUserIsInstructor = instructors.Contains(User.GetUserId());
return(new UsersSearchResponse
{
Users = users.Select(u => new FoundUserResponse
{
User = BuildShortUserInfo(u.User,
discloseLogin: u.Fields.Contains(SearchField.Login) || currentUserIsInstructor && instructors.Contains(u.User.Id),
discloseEmail: u.Fields.Contains(SearchField.Email)),
Fields = u.Fields.ToList(),
}).ToList(),
Pagination = new PaginationResponse
{
Offset = parameters.Offset,
Count = users.Count,
}
});
}
public async Task <ActionResult <UsersProgressResponse> > UserProgress([FromRoute] string courseId, [FromBody] UserProgressParameters parameters)
{
if (!await courseManager.HasCourseAsync(courseId))
{
return(NotFound(new ErrorResponse($"Course {courseId} not found")));
}
var course = await courseManager.FindCourseAsync(courseId);
var userIds = parameters.UserIds;
if (userIds == null || userIds.Count == 0)
{
userIds = new List <string> {
UserId
}
}
;
else
{
var userIdsWithProgressNotVisibleForUser = await GetUserIdsWithProgressNotVisibleForUser(course.Id, userIds);
if (userIdsWithProgressNotVisibleForUser?.Any() ?? false)
{
var userIdsStr = string.Join(", ", userIdsWithProgressNotVisibleForUser);
return(NotFound(new ErrorResponse($"Users {userIdsStr} not found")));
}
}
var isInstructor = await courseRolesRepo.HasUserAccessToCourse(UserId, courseId, CourseRoleType.Instructor).ConfigureAwait(false);
var visibleSlides = course.GetSlides(isInstructor).Select(s => s.Id).ToHashSet();
var scores = await visitsRepo.GetScoresForSlides(course.Id, userIds);
var visitsTimestamps = await visitsRepo.GetLastVisitsInCourse(course.Id, UserId);
var additionalScores = await GetAdditionalScores(course.Id, userIds).ConfigureAwait(false);
var attempts = await userQuizzesRepo.GetUsedAttemptsCountAsync(course.Id, userIds).ConfigureAwait(false);
var waitingQuizSlides = await userQuizzesRepo.GetSlideIdsWaitingForManualCheckAsync(course.Id, userIds).ConfigureAwait(false);
var waitingExerciseSlides = await slideCheckingsRepo.GetSlideIdsWaitingForManualExerciseCheckAsync(course.Id, userIds).ConfigureAwait(false);
var prohibitFurtherManualCheckingSlides = await slideCheckingsRepo.GetProhibitFurtherManualCheckingSlides(course.Id, userIds).ConfigureAwait(false);
var skippedSlides = await visitsRepo.GetSkippedSlides(course.Id, userIds);
var usersProgress = new Dictionary <string, UserProgress>();
foreach (var userId in scores.Keys)
{
var visitedSlides
= scores[userId]
.Where(kvp => visibleSlides.Contains(kvp.Key))
.ToDictionary(kvp => kvp.Key, kvp => new UserProgressSlideResult
{
Visited = true,
Timestamp = visitsTimestamps.TryGetValue(kvp.Key, out var visit) ? visit.Timestamp : null,
Score = kvp.Value,
IsSkipped = skippedSlides.GetValueOrDefault(userId)?.Contains(kvp.Key) ?? false,
UsedAttempts = attempts.GetValueOrDefault(userId)?.GetValueOrDefault(kvp.Key) ?? 0,
WaitingForManualChecking = (waitingExerciseSlides.GetValueOrDefault(userId)?.Contains(kvp.Key) ?? false) ||
(waitingQuizSlides.GetValueOrDefault(userId)?.Contains(kvp.Key) ?? false),
ProhibitFurtherManualChecking = prohibitFurtherManualCheckingSlides.GetValueOrDefault(userId)?.Contains(kvp.Key) ?? false
});
public async Task <ActionResult> ExportGroupMembersAsTsv([Required] int groupId, Guid?quizSlideId = null)
{
var group = await groupsRepo.FindGroupByIdAsync(groupId).ConfigureAwait(false);
if (group == null)
{
return(StatusCode((int)HttpStatusCode.NotFound, "Group not found"));
}
var isSystemAdministrator = await IsSystemAdministratorAsync().ConfigureAwait(false);
var isCourseAdmin = await courseRolesRepo.HasUserAccessToCourse(UserId, group.CourseId, CourseRoleType.CourseAdmin).ConfigureAwait(false);
if (!(isSystemAdministrator || isCourseAdmin))
{
return(StatusCode((int)HttpStatusCode.Forbidden, "You should be course or system admin"));
}
var users = await groupMembersRepo.GetGroupMembersAsUsersAsync(groupId).ConfigureAwait(false);
var extendedUserInfo = await GetExtendedUserInfo(users).ConfigureAwait(false);
List <string> questions = null;
var courseId = group.CourseId;
var course = await courseManager.GetCourseAsync(courseId);
if (quizSlideId != null)
{
var slide = course.FindSlideById(quizSlideId.Value, false);
if (slide == null)
{
return(StatusCode((int)HttpStatusCode.NotFound, $"Slide not found in course {courseId}"));
}
if (!(slide is QuizSlide quizSlide))
{
return(StatusCode((int)HttpStatusCode.NotFound, $"Slide is not quiz slide in course {courseId}"));
}
List <List <string> > answers;
(questions, answers) = await GetQuizAnswers(users, courseId, quizSlide).ConfigureAwait(false);
extendedUserInfo = extendedUserInfo.Zip(answers, (u, a) => { u.Answers = a; return(u); }).ToList();
}
var slides = course.GetSlides(false).Where(s => s.ShouldBeSolved).Select(s => s.Id).ToList();
var scores = GetScoresByScoringGroups(users.Select(u => u.Id).ToList(), slides, course);
var scoringGroupsWithScores = scores.Select(kvp => kvp.Key.ScoringGroup).ToHashSet();
var scoringGroups = course.Settings.Scoring.Groups.Values.Where(sg => scoringGroupsWithScores.Contains(sg.Id)).ToList();
var headers = new List <string> {
"Id", "Login", "Email", "FirstName", "LastName", "VisibleName", "Gender", "LastVisit", "IpAddress"
};
if (questions != null)
{
headers = headers.Concat(questions).ToList();
}
if (scoringGroups.Count > 0)
{
headers = headers.Concat(scoringGroups.Select(s => s.Abbreviation)).ToList();
}
var rows = new List <List <string> > {
headers
};
foreach (var i in extendedUserInfo)
{
var row = new List <string> {
i.Id, i.Login, i.Email, i.FirstName, i.LastName, i.VisibleName, i.Gender.ToString(), i.LastVisit.ToSortableDate(), i.IpAddress
};
if (i.Answers != null)
{
row = row.Concat(i.Answers).ToList();
}
row.AddRange(scoringGroups.Select(scoringGroup => (scores.ContainsKey((i.Id, scoringGroup.Id)) ? scores[(i.Id, scoringGroup.Id)] : 0).ToString()));