/// <summary>
/// Deletes the homework.
/// </summary>
/// <param name="id">The identifier.</param>
/// <exception cref="CustomException">
/// </exception>
public void DeleteHomework(int id)
{
try {
using (var db = new ELearningDatabaseEntities()) {
//delete the assignements for the homework
var assignementsToDelete = db.HomeworkAssignements
.Where(a => a.HomeworkId == id)
.ToList();
foreach (var a in assignementsToDelete)
{
db.HomeworkAssignements.Remove(a);
}
db.SaveChanges();
//delete the homework
Homeworks hw = db.Homeworks
.Where(h => h.HomeworkId == id)
.First();
db.Homeworks.Remove(hw);
db.SaveChanges();
}
}
catch (ArgumentNullException ane) {
throw new CustomException(ane.Message);
}
catch (InvalidOperationException ex) {
throw new CustomException(ex.Message);
}
}
public HttpResponseMessage GetHomeworkById(int id)
{
try {
Homeworks hw = this._homeworkManagement.GetHomeworkById(id);
if (hw != null)
{
HomeworkDTO dto = new HomeworkDTO();
dto.HomeworkAccessSpan = hw.HomeworkAccessSpan;
dto.HomeworkDeadline = hw.HomeworkDeadline;
dto.HomeworkDescription = hw.HomeworkDescription;
dto.HomeworkId = hw.HomeworkId;
dto.HomeworkName = hw.HomeworkName;
dto.HomeworkPoints = hw.HomeworkPoints;
dto.HomeworkCode = hw.HomeworkCode;
dto.CourseId = hw.CourseId;
dto.CourseModuleId = hw.CourseModuleId;
dto.OwnerId = hw.OwnerId;
return(Request.CreateResponse <HomeworkDTO>(HttpStatusCode.OK, dto));
}
else
{
return(Request.CreateErrorResponse(HttpStatusCode.NotFound, "Resource Not Found"));
}
}
catch (Exception) {
// Log exception code goes here
return(Request.CreateErrorResponse(HttpStatusCode.InternalServerError, "Error occured while executing method."));
}
}
public async Task <IActionResult> Edit(int id, [Bind("ID,Name,Note,Status")] Homeworks homeworks)
{
if (id != homeworks.ID)
{
return(NotFound());
}
if (ModelState.IsValid)
{
try
{
_context.Update(homeworks);
await _context.SaveChangesAsync();
}
catch (DbUpdateConcurrencyException)
{
if (!HomeworksExists(homeworks.ID))
{
return(NotFound());
}
else
{
throw;
}
}
return(RedirectToAction(nameof(Index)));
}
return(View(homeworks));
}
/// <summary>
/// Adds the homework.
/// </summary>
/// <param name="hw">The hw.</param>
/// <exception cref="CustomException"></exception>
public void AddHomework(Homeworks hw)
{
try {
using (var db = new ELearningDatabaseEntities()) {
db.Homeworks.Add(hw);
db.SaveChanges();
}
}
catch (InvalidOperationException ioe) {
throw new CustomException(ioe.Message);
}
}
/// <summary>
/// Edits the homework.
/// </summary>
/// <param name="hw">The hw.</param>
/// <exception cref="CustomException"></exception>
public void EditHomework(Homeworks hw)
{
try {
using (var db = new ELearningDatabaseEntities()) {
db.Homeworks.Attach(hw);
db.Entry(hw).State = System.Data.EntityState.Modified;
db.SaveChanges();
}
}
catch (InvalidOperationException ex) {
throw new CustomException(ex.Message);
}
}
public async Task <IActionResult> Create([Bind("ID,Name,Note,Status")] Homeworks homeworks, int studentId)
{
if (ModelState.IsValid)
{
var student = _context.Students.Find(studentId);
homeworks.Students = student;
homeworks.CreateTime = DateTime.Now;
_context.Add(homeworks);
await _context.SaveChangesAsync();
return(RedirectToAction("Details", "Students", new { id = studentId }));
}
return(View(homeworks));
}
/// <summary>
/// Gets all group assigned homework.
/// </summary>
/// <param name="groupId">The group identifier.</param>
/// <returns></returns>
/// <exception cref="CustomException"></exception>
public List <AssignementDTO> GetAllGroupAssignedHomework(int groupId)
{
try {
using (var db = new ELearningDatabaseEntities()) {
List <HomeworkAssignements> ha = db.HomeworkAssignements
.Where(a => a.GroupId == groupId)
.ToList();
List <AssignementDTO> dto = new List <AssignementDTO>();
foreach (var x in ha)
{
Homeworks hw = db.Homeworks
.Where(h => h.HomeworkId == x.HomeworkId)
.First();
string code = "";
if (x.CourseId != null && x.CourseId > 0)
{
code = db.Courses
.Where(c => c.CourseId == x.CourseId)
.Select(c => c.CourdeCode)
.First();
}
else if (x.CourseModuleId != null && x.CourseModuleId > 0)
{
code = db.CourseModule
.Where(cm => cm.ModuleId == x.CourseModuleId)
.Select(cm => cm.ModuleName)
.First();
}
dto.Add(new AssignementDTO {
AnswerId = x.AnswerId,
AssignementId = x.AssignementId,
GradeId = x.GradeId,
HomeworkDeadline = hw.HomeworkDeadline,
HomeworkDescription = hw.HomeworkDescription,
HomeworkId = hw.HomeworkId,
HomeworkName = hw.HomeworkName,
HomeworkPoints = hw.HomeworkPoints,
HomeworkCode = hw.HomeworkCode,
RecipientId = groupId,
SubjectCode = code
});
}
return(dto);
}
}
catch (ArgumentNullException ane) {
throw new CustomException(ane.Message);
}
}
public IActionResult IsHomeworkUnique(Homeworks hw)
{
if (_context.Homeworks
.Include(t => t.TeacherSubjectGroup)
.Include(t => t.TeacherSubjectGroup.TeacherSubject)
.Include(t => t.TeacherSubjectGroup.TeacherSubject.Subject)
.Include(t => t.TeacherSubjectGroup.TeacherSubject.Teacher)
.Include(t => t.TeacherSubjectGroup.Group)
.Include(t => t.TeacherSubjectGroup.Group.GroupType)
.Include(t => t.TeacherSubjectGroup.Group.Grade)
.Any(t => t.PassDate == hw.PassDate &&
t.TeacherSubjectGroupId == hw.TeacherSubjectGroupId &&
t.HomeworkId != hw.HomeworkId))
{
return(Json(false));
}
return(Json(true));
}
public IHttpActionResult AddHomework(AdminHomeWrokDto dto)
{
if (context.Homeworks.Any(e => e.ExerciseId == dto.ExerciseId && e.StudentId == dto.StudentId))
{
return(BadRequest("To zadanie juz jest przydzielone do tego ucznia!"));
}
var homework = new Homeworks()
{
StudentId = dto.StudentId,
ExerciseId = dto.ExerciseId,
TaskDateTime = DateTime.Now.ToString("HH:mm d MMMMM yyyy"),
IsRead = false
};
context.Homeworks.Add(homework);
context.SaveChanges();
return(Ok());
}
private static void GenerateHomeworks(StudentSystemDbContext dbContext)
{
var content = "Task.";
var allStudentsIds = dbContext.Students.Select(s => s.Id).ToArray();
var allCoursesIds = dbContext.Courses.Select(s => s.Id).ToArray();
for (int i = 1, j = 10; i <= 5; i++, j--)
{
var homework = new Homeworks
{
Content = content + i,
StudentId = allStudentsIds[j],
CourseId = allCoursesIds[j]
};
dbContext.Homeworks.Add(homework);
}
Console.WriteLine("Homeworks are successfully added!");
}
/// <summary>
/// Gets the view model for a homework.
/// </summary>
/// <param name="homework">The homework.</param>
/// <returns></returns>
/// <exception cref="CustomException"></exception>
public HomeworksViewModel GetViewModel(Homeworks homework)
{
try {
HomeworksViewModel hvm = new HomeworksViewModel();
hvm.HomeworkAccessSpan = homework.HomeworkAccessSpan;
hvm.HomeworkDeadline = homework.HomeworkDeadline;
hvm.HomeworkDescription = homework.HomeworkDescription;
hvm.HomeworkId = homework.HomeworkId;
hvm.HomeworkName = homework.HomeworkName;
hvm.HomeworkPoints = homework.HomeworkPoints;
hvm.HomeworkCode = homework.HomeworkCode;
hvm.CourseId = homework.CourseId;
hvm.CourseModuleId = homework.CourseModuleId;
hvm.OwnerId = homework.OwnerId;
return(hvm);
}
catch (Exception ex) {
throw new CustomException(ex.Message);
}
}
public async Task <IActionResult> Edit(int id, [Bind("HomeworkId,PassDate,TeacherSubjectGroupId,Homework")] Homeworks homeworks)
{
if (id != homeworks.HomeworkId)
{
return(NotFound());
}
if (ModelState.IsValid)
{
try
{
_context.Update(homeworks);
await _context.SaveChangesAsync();
}
catch (DbUpdateConcurrencyException)
{
if (!HomeworksExists(homeworks.HomeworkId))
{
return(NotFound());
}
else
{
throw;
}
}
return(RedirectToAction(nameof(Index)));
}
ViewData["TeacherSubjectGroupId"] = new SelectList(_context.TeacherSubjectGroup
.Include(t => t.TeacherSubject)
.Include(t => t.TeacherSubject.Subject)
.Include(t => t.TeacherSubject.Teacher)
.Include(t => t.Group)
.Include(t => t.Group.GroupType)
.Include(t => t.Group.Grade),
"TeacherSubjectGroupId",
"TeacherSubjectGroupName",
homeworks.TeacherSubjectGroupId);
return(View(homeworks));
}
public async Task <IActionResult> Create([Bind("HomeworkId,PassDate,TeacherSubjectGroupId,Homework")] Homeworks homeworks)
{
if (ModelState.IsValid)
{
_context.Add(homeworks);
await _context.SaveChangesAsync();
return(RedirectToAction(nameof(Index)));
}
ViewData["TeacherSubjectGroupId"] = new SelectList(_context.TeacherSubjectGroup
.Include(t => t.TeacherSubject)
.Include(t => t.TeacherSubject.Subject)
.Include(t => t.TeacherSubject.Teacher)
.Include(t => t.Group)
.Include(t => t.Group.GroupType)
.Include(t => t.Group.Grade),
"TeacherSubjectGroupId",
"TeacherSubjectGroupName",
homeworks.TeacherSubjectGroupId);
return(View(homeworks));
}
public void Edit(string teacher, string name, string start, string end, string newname, string newstart, string newend, string description, string path, UserNode[] nodes)
{
Homeworks h = new Homeworks();
Homework.Homework orig = h.Homework.Single(hw => hw.Teacher == teacher && hw.Name == name && hw.Start == start.Replace('.', ':') && hw.End == end.Replace('.', ':'));
Homework.Homework updated = orig;
updated.Name = name;
updated.Start = start;
updated.End = end;
updated.Path = path;
updated.Description = HttpUtility.UrlDecode(description, System.Text.Encoding.Default);
updated.UserNodes.Clear();
updated.UserNodes.AddRange(nodes);
User u = new User();
u.Authenticate(updated.Teacher, TokenGenerator.ConvertToPlain(updated.Token));
DriveMapping mapping;
string p = Converter.DriveToUNC(updated.Path.Remove(0, 1), updated.Path.Substring(0, 1), out mapping, u);
u.ImpersonateContained();
try
{
if (!Directory.Exists(p))
{
Directory.CreateDirectory(p);
}
if (!Directory.Exists(Path.Combine(p, updated.Name)))
{
Directory.CreateDirectory(Path.Combine(p, updated.Name));
}
}
finally
{
u.EndContainedImpersonate();
}
h.Update(orig, updated);
}
public HttpResponseMessage UpdateHomework(int id, HomeworkDTO dto)
{
try {
Homeworks hw = new Homeworks();
hw.HomeworkAccessSpan = dto.HomeworkAccessSpan;
hw.HomeworkDeadline = dto.HomeworkDeadline;
hw.HomeworkDescription = dto.HomeworkDescription;
hw.HomeworkId = dto.HomeworkId;
hw.HomeworkName = dto.HomeworkName;
hw.HomeworkPoints = dto.HomeworkPoints;
hw.HomeworkCode = dto.HomeworkCode;
hw.CourseId = dto.CourseId;
hw.CourseModuleId = dto.CourseModuleId;
hw.OwnerId = dto.OwnerId;
this._homeworkManagement.EditHomework(hw);
return(Request.CreateResponse(HttpStatusCode.OK));
}
catch (Exception) {
// Log exception code goes here
return(Request.CreateErrorResponse(HttpStatusCode.InternalServerError, "Error occured while executing method."));
}
}
public MainViewModel()
{
Homeworks.Add(new Homework {
Name = "Ukol1", Date = new DateTime(2020, 3, 27), Subject = Subject.PRG, IsDone = false
});
Homeworks.Add(new Homework {
Name = "Ukol2", Date = new DateTime(2020, 3, 28), Subject = Subject.CJL, IsDone = false
});
Add = new RelayCommand(
() => { Homeworks.Add(new Homework {
Name = "Nový úkol"
}); },
() => true
);
Remove = new RelayCommand(
() => { Homeworks.Remove(SelectedHomework); },
() => { return(SelectedHomework != null); }
);
Load = new RelayCommand(
async() => {
try
{
string serializedSourceText = await Windows.Storage.FileIO.ReadTextAsync(File);
Homeworks = JsonSerializer.Deserialize <ObservableCollection <Homework> >(serializedSourceText);
}
catch (Exception ex)
{
var messageDialog = new MessageDialog("Error: " + ex.Message); // vyhození dialogu odsud není ideální, ale funguje
await messageDialog.ShowAsync();
}
},
() => true
);
Save = new RelayCommand(
async() => {
try
{
string serializedData = JsonSerializer.ToJsonString(Homeworks);
await Windows.Storage.FileIO.WriteTextAsync(File, serializedData);
/* pokusně přes stream
* var stream = await File.OpenAsync(Windows.Storage.FileAccessMode.ReadWrite);
* using (var outputStream = stream.GetOutputStreamAt(0))
* {
* using (var dataWriter = new Windows.Storage.Streams.DataWriter(outputStream))
* {
* dataWriter.WriteString(JsonSerializer.ToJsonString(_students));
* await dataWriter.StoreAsync();
* await outputStream.FlushAsync();
* }
* }
* stream.Dispose();
*/
}
catch (Exception ex)
{
var messageDialog = new MessageDialog("Error: " + ex.Message);
await messageDialog.ShowAsync();
}
},
() => true
);
}
public void Remove(string teacher, string name, string start, string end)
{
Homeworks h = new Homeworks();
h.Remove(h.Homework.Single(hw => hw.Teacher == teacher && hw.Name == name && hw.Start == start.Replace('-', '/').Replace('.', ':') && hw.End == end.Replace('-', '/').Replace('.', ':')));
}
