public async Task <bool> FetchTeacherData(string token)
{
var tokenField = "Token " + token;
try
{
var httpClient = new HttpClient();
System.Net.ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12 | SecurityProtocolType.Tls11 | SecurityProtocolType.Tls;
System.Net.ServicePointManager.ServerCertificateValidationCallback +=
delegate(object sender, System.Security.Cryptography.X509Certificates.X509Certificate certificate,
System.Security.Cryptography.X509Certificates.X509Chain chain,
System.Net.Security.SslPolicyErrors sslPolicyErrors)
{
return(true); // **** Always accept
};
httpClient.DefaultRequestHeaders.Add("Authorization", tokenField);
var response = await httpClient.GetAsync("https://teenoh.webfactional.com/teacher/");
if (response.IsSuccessStatusCode)
{
HttpContent content = response.Content;
var json = await content.ReadAsStringAsync();
var teacherData = JsonConvert.DeserializeObject <TeacherData>(json);
App.TeacherData = teacherData;
App.OngoingAttendances = new List <Models.OngoingAttendance>();
foreach (var course in teacherData.courses)
{
foreach (var attendance in course.attendances)
{
if (attendance.is_active == true)
{
var ongoingAttendance = new OngoingAttendance
{
id = attendance.id,
course_name = course.name,
code = course.code,
credits = course.credits,
venue = attendance.venue,
name = attendance.name,
is_active = attendance.is_active,
present_students = attendance.present_students
};
App.OngoingAttendances.Add(ongoingAttendance);
}
}
}
return(true);
}
else
{
return(false);
}
}
catch (Exception e)
{
return(false);
}
}
public PresentStudentsViewModel(OngoingAttendance attendance)
{
RefreshCommand = new Command(RefreshAction);
token = "Token" + ((App)Application.Current).token;
OngoingAttendance = attendance;
StudentsList = OngoingAttendance.present_students.ToList();
AttendanceModelType = "OngoingAttendance";
}
public SingleOngoingAttendanceViewModel(INavigation _navigation, OngoingAttendance _attendance)
{
IsBusy = false;
IsError = false;
Navigation = _navigation;
Attendance = _attendance;
StopAttendanceCommand = new Command(StopAttendance);
ViewPresentCommand = new Command(ViewPresentStudents);
RefreshCommand = new Command(RefreshAction);
}
public OngoingAttendanceView(OngoingAttendance ongoingAttendance)
{
InitializeComponent();
BindingContext = new SingleOngoingAttendanceViewModel(this.Navigation, ongoingAttendance);
course_name.Text = ongoingAttendance.course_name;
code.Text = ongoingAttendance.code;
credits.Text = ongoingAttendance.credits.ToString() + " credits";
attendance_name.Text = "Attendance Tag: " + ongoingAttendance.name;
}
public PresentStudents(OngoingAttendance attendance)
{
InitializeComponent();
BindingContext = new PresentStudentsViewModel(attendance);
}
