private static async Task <JSONEnroll> DoRoll(int id, bool enroll)
{
HttpMessage response = await Login.Instance.DoPost(enroll?$"api/talks/enroll/{id}" : $"api/talks/unenroll/{id}");
if (!response.Success)
{
return(new JSONEnroll()
{
message = response.Message, success = response.Success
});
}
string json = await response.Response.Content.ReadAsStringAsync();
JSONEnroll canEnroll = JsonConvert.DeserializeObject <JSONEnroll>(json);
return(canEnroll);
}
private async void OnEnroll(object sender, EventArgs args)
{
EnrollButton.IsEnabled = false;
if (!Login.Instance.IsLoggedIn)
{
await Application.Current.MainPage.DisplayAlert("Please login!", "Login to enroll for a talk.", "OK");
EnrollButton.IsEnabled = true;
return;
}
if (_enrolled)
{
JSONEnroll jsonEnroll = await Enroll.UnEnrollTalk(Appointment.Id);
if (!jsonEnroll.success)
{
await Application.Current.MainPage.DisplayAlert("Failed.", "Unenrollment did not succeed. Please try again.", "OK");
EnrollButton.IsEnabled = true;
return;
}
}
else
{
JSONEnroll jsonEnroll = await Enroll.EnrollTalk(Appointment.Id);
if (!jsonEnroll.success)
{
await Application.Current.MainPage.DisplayAlert("Failed.", "Enrollment did not succeed. Please try again.", "OK");
EnrollButton.IsEnabled = true;
return;
}
}
// It worked!
_enrolled = !_enrolled;
EnrollButton.Text = _enrolled ? "Unenroll" : "Enroll";
EnrollButton.IsEnabled = true;
}
