public SchoolsViewModel(IEdsWebApiService edsWebApiService)
{
_edsWebApiService = edsWebApiService;
_edsWebApiService.SchoolsConnect()
.ObserveOn(RxApp.MainThreadScheduler)
.Transform(x => new SchoolViewModel(x))
.Bind(out _schools)
.Subscribe();
this.WhenAnyValue(x => x.SelectedSchool)
.Where(x => x != null)
.Do(x =>
{
this.SelectedSchoolId = x.Id;
this.SelectedSchoolName = x.Name;
this.SelectedSchoolLocation = x.Location;
this.IsEditMode = false;
})
.Subscribe();
_addSchoolEnabled = this.WhenAnyValue(
x => x._edsWebApiService.IsLoggedIn,
x => x.SelectedSchoolId,
(isLoggedIn, selectedSchoolId) => isLoggedIn && (selectedSchoolId != 0))
.ToProperty(this, x => x.AddSchoolEnabled);
AddSchoolCommand = ReactiveCommand.Create(
DoAddSchool, this.WhenAnyValue(x => x.AddSchoolEnabled));
AddSchoolCommand.ThrownExceptions.Subscribe(ex => MessageBus.Current.SendMessage(ex));
_editSchoolEnabled = this.WhenAnyValue(
x => x.SelectedSchool, x => x.IsEditMode,
(schoolViewModel, isEditMode) => (schoolViewModel != null) && !isEditMode)
.ToProperty(this, x => x.EditSchoolEnabled);
EditSchoolCommand = ReactiveCommand.Create(
DoEditSchool, this.WhenAnyValue(x => x.EditSchoolEnabled));
EditSchoolCommand.ThrownExceptions.Subscribe(ex => MessageBus.Current.SendMessage(ex));
_saveSchoolEnabled = this.WhenAnyValue(
x => x.SelectedSchoolName,
x => x.SelectedSchoolLocation,
x => x.IsEditMode,
(name, location, isEditMode) =>
!string.IsNullOrEmpty(name) && !string.IsNullOrEmpty(location) && isEditMode)
.ToProperty(this, x => x.SaveSchoolEnabled);
SaveSchoolCommand = ReactiveCommand.CreateFromTask(
async() =>
{
await DoSaveSchool();
}, this.WhenAnyValue(x => x.SaveSchoolEnabled));
SaveSchoolCommand.ThrownExceptions.Subscribe(ex => MessageBus.Current.SendMessage(ex));
_deleteSchoolEnabled = this.WhenAnyValue(
x => x.SelectedSchoolId,
x => x._edsWebApiService.IsAdmin,
(id, isAdmin) =>
(id > 0) && isAdmin)
.ToProperty(this, x => x.DeleteSchoolEnabled);
DeleteSchoolCommand = ReactiveCommand.CreateFromTask(
async() =>
{
await DoDeleteSchool();
}, this.WhenAnyValue(x => x.DeleteSchoolEnabled));
DeleteSchoolCommand.ThrownExceptions.Subscribe(ex => MessageBus.Current.SendMessage(ex));
}
public StudentsViewModel(IEdsWebApiService edsWebApiService)
{
_edsWebApiService = edsWebApiService;
_edsWebApiService.StudentsConnect()
.ObserveOn(RxApp.MainThreadScheduler)
.Transform(x => new StudentViewModel(x))
.Bind(out _students)
.Subscribe();
_edsWebApiService.SchoolsConnect()
.ObserveOn(RxApp.MainThreadScheduler)
.Transform(x => new SchoolViewModel(x))
.Bind(out _schools)
.Subscribe();
this.WhenAnyValue(x => x.SelectedStudent)
.Where(x => x != null)
.Do(x =>
{
this.SelectedStudentId = x.Id;
this.SelectedStudentName = x.Name;
this.SelectedStudentGender = x.Gender;
this.SelectedStudentLocation = x.Location;
this.SelectedStudentBirthday = x.Birthday.GetValueOrDefault(DateTime.Today);
this.SelectedStudentEnrollmentDate = x.EnrollmentDate.GetValueOrDefault(DateTime.Today);
this.SelectedStudentEnrollmentClass = x.EnrollmentClass;
this.SelectedStudentEnrollmentAcademicYear = x.EnrollmentAcademicYear;
this.SelectedStudentEnrollmentReason = x.EnrollmentReason;
this.SelectedStudentConfirmedDate = x.ConfirmedDate.GetValueOrDefault(SelectedStudentEnrollmentDate);
this.SelectedStudentConfirmedClass = x.ConfirmedClass;
this.SelectedStudentConfirmedAcademicYear = x.ConfirmedAcademicYear;
this.SelectedStudentSponsorshipStatus = x.SponsorshipStatus;
foreach (var schoolViewModel in _schools)
{
if (schoolViewModel.Id != x.SchoolId)
{
continue;
}
this.SelectedStudentSchoolViewModel = schoolViewModel;
break;
}
this.IsEditMode = false;
})
.Subscribe();
_addStudentEnabled = this.WhenAnyValue(
x => x._edsWebApiService.IsLoggedIn,
x => x.SelectedStudentId,
(isLoggedIn, selectedStudentId) => isLoggedIn && (selectedStudentId != 0))
.ToProperty(this, x => x.AddStudentEnabled);
AddStudentCommand = ReactiveCommand.Create(
DoAddStudent, this.WhenAnyValue(x => x.AddStudentEnabled));
AddStudentCommand.ThrownExceptions.Subscribe(ex => MessageBus.Current.SendMessage(ex));
_editStudentEnabled = this.WhenAnyValue(
x => x.SelectedStudent,
x => x.IsEditMode,
(studentViewModel, isEditMode) => (studentViewModel != null) && !isEditMode)
.ToProperty(this, x => x.EditStudentEnabled);
EditStudentCommand = ReactiveCommand.Create(
DoEditStudent, this.WhenAnyValue(x => x.EditStudentEnabled));
EditStudentCommand.ThrownExceptions.Subscribe(ex => MessageBus.Current.SendMessage(ex));
_saveStudentEnabled = this.WhenAnyValue(
x => x.SelectedStudentName,
x => x.SelectedStudentLocation,
x => x.IsEditMode,
(name, location, isEditMode) =>
!string.IsNullOrEmpty(name) &&
!string.IsNullOrEmpty(location) &&
isEditMode)
.ToProperty(this, x => x.SaveStudentEnabled);
SaveStudentCommand = ReactiveCommand.CreateFromTask(
async() =>
{
await DoSaveStudent();
}, this.WhenAnyValue(x => x.SaveStudentEnabled));
SaveStudentCommand.ThrownExceptions.Subscribe(ex => MessageBus.Current.SendMessage(ex));
_deleteStudentEnabled = this.WhenAnyValue(
x => x.SelectedStudentId,
x => x._edsWebApiService.IsAdmin,
(id, isAdmin) =>
(id > 0) && isAdmin)
.ToProperty(this, x => x.DeleteStudentEnabled);
DeleteStudentCommand = ReactiveCommand.CreateFromTask(
async() =>
{
await DoDeleteStudent();
}, this.WhenAnyValue(x => x.DeleteStudentEnabled));
DeleteStudentCommand.ThrownExceptions.Subscribe(ex => MessageBus.Current.SendMessage(ex));
SelectPhotoCommand = ReactiveCommand.CreateFromTask(
async() =>
{
var photoPath = await this.selectPhoto.Handle(string.Empty);
if (string.IsNullOrEmpty(photoPath) || !File.Exists(photoPath))
{
SelectedStudentPhoto = null;
return;
}
SelectedStudentPhoto = new BitmapImage(new Uri(photoPath));
var base64String = Base64ImageEncoderDecoder.ToBase64(SelectedStudentPhoto);
var photo = await _edsWebApiService.GetPhoto(SelectedStudentId);
if (photo == null)
{
photo = new Photo(0, SelectedStudentId, base64String);
await _edsWebApiService.AddPhoto(photo);
}
else
{
photo.Image = base64String;
await _edsWebApiService.UpdatePhoto(photo.Id.GetValueOrDefault(0), photo);
}
}, this.WhenAnyValue(x => x.EditStudentEnabled)
);
SelectPhotoCommand.ThrownExceptions.Subscribe(ex => MessageBus.Current.SendMessage(ex));
LoadPhotoCommand = ReactiveCommand.CreateFromTask <int>(
async(int studentId) =>
{
var photo = await _edsWebApiService.GetPhoto(studentId);
if (photo == null)
{
SelectedStudentPhoto = null;
return;
}
this.SelectedStudentPhoto = Base64ImageEncoderDecoder.FromBase64(photo.Image);
}, this.WhenAnyValue(x => x.EditStudentEnabled)
);
this.WhenAnyValue(x => x.SelectedStudent)
.Where(x => x != null)
.Select(x => x.Id)
.InvokeCommand(LoadPhotoCommand);
var listAcademicYearStrings = new List <string>();
for (var year = 2020; year < 2050; year++)
{
listAcademicYearStrings.Add($"{year}/{year + 1}");
}
AcademicYearOptions = listAcademicYearStrings;
var listSchoolFormStrings = new List <string>();
for (var schoolClass = 1; schoolClass <= 12; schoolClass++)
{
listSchoolFormStrings.Add(SchoolClassConverter.ToSchoolForm(schoolClass));
}
SchoolClassOptions = listSchoolFormStrings;
this.selectPhoto = new Interaction <string, string>();
}
