/*
* Brings up lthe Facebook authentication page and either
* logs in or creates a new user depending on whether the Facebook ID is recognised
*/
private async void WebViewOnNavigated(object sender, WebNavigatedEventArgs e)
{
var accessToken = facebookServices.ExtractAccessTokenFromUrl(e.Url);
if (accessToken != "")
{
FacebookProfile facebookProfile = await facebookServices.GetFacebookProfileAsync(accessToken);
string password = "******";
UserAPI userAPI = new UserAPI();
LoginAPI loginAPI = new LoginAPI();
//Do a check to see if user is already in the database - if they are then skip the register and go to login if not just login
Tuple <HttpStatusCode, bool> isUniqueEmailResult = await userAPI.isUniqueApiId(facebookProfile.Id);
if (isUniqueEmailResult.Item1 != HttpStatusCode.OK)
{
Console.WriteLine("Failed to connect to server for checking of unique email");
}
//This account already exists
if (isUniqueEmailResult.Item2 == false)
{
HttpStatusCode statusCode = await loginAPI.LoginUser(facebookProfile.Id);
switch (statusCode)
{
case HttpStatusCode.OK:
// Pop away login screen on successful login
HttpStatusCode httpStatusCode = await userAPI.GetUserPhoto();
UserController.Instance.mainPageController.updateMenuPhoto();
await Navigation.PopModalAsync();
await parentLoginPage.OpenMainPageFromSignUp();
break;
case HttpStatusCode.Unauthorized:
await DisplayAlert(
"Failed to Login",
"Incorrect username/password",
"OK");
break;
case HttpStatusCode.ServiceUnavailable:
await DisplayAlert(
"Failed to Login",
"Server unavailable, check connection",
"OK");
break;
case HttpStatusCode.InternalServerError:
await DisplayAlert(
"Failed to Login",
"Server error",
"OK");
break;
}
}
else //Create new account
{
var waitHandle = new EventWaitHandle(false, EventResetMode.AutoReset);
var modalPage = new NavigationPage(new IncompleteFacebookDetailsPage(facebookProfile));
modalPage.Disappearing += (sender2, e2) =>
{
waitHandle.Set();
};
await Navigation.PushModalAsync(modalPage);
await Task.Run(() => waitHandle.WaitOne());
facebookProfile.Email = UserController.Instance.FacebookEmail;
facebookProfile.Birthday = UserController.Instance.FacebookDateOfBirth;
facebookProfile.NHI = UserController.Instance.NHI;
User inputUser = new User
{
name = new List <string> {
facebookProfile.FirstName, "", facebookProfile.LastName
},
preferredName = new List <string> {
facebookProfile.FirstName, "", facebookProfile.LastName
},
email = facebookProfile.Email,
username = facebookProfile.Email,
password = password,
dateOfBirth = new CustomDate(DateTime.Parse(facebookProfile.Birthday)),
creationTime = new CustomDateTime(DateTime.Now),
gender = facebookProfile.Gender.ToUpper(),
organs = new List <Organ>(),
userHistory = new List <HistoryItem>(),
nhi = facebookProfile.NHI
};
//Server requires to initialise the organs and user history items on creation
HttpStatusCode registerUserResult = await loginAPI.RegisterUser(inputUser);
switch (registerUserResult)
{
case HttpStatusCode.Created:
HttpStatusCode registerFacebookUserResult =
await loginAPI.FacebookRegisterUser(inputUser.id, facebookProfile.Id);
//Set the local profile picture to the picture object
HttpClient client = ServerConfig.Instance.client;
// Get the single userController instance
UserController userController = UserController.Instance;
var bytes = await client.GetByteArrayAsync(facebookProfile.Picture.Data.Url);
Photo receievedPhoto = new Photo(Convert.ToBase64String(bytes));
userController.photoObject = receievedPhoto;
ImageSource source = ImageSource.FromStream(() => new MemoryStream(bytes));
userController.ProfilePhotoSource = source;
HttpStatusCode loginUserResult = await loginAPI.LoginUser(facebookProfile.Id);
switch (loginUserResult)
{
case HttpStatusCode.OK:
//Upload the photo to the server - must happen after a login as the token is required
HttpStatusCode photoUpdated = await userAPI.UpdateUserPhoto();
if (photoUpdated != HttpStatusCode.OK)
{
Console.WriteLine("Error uploading facebook photo to the server");
}
await Navigation.PopModalAsync();
await parentLoginPage.OpenMainPageFromSignUp();
break;
case HttpStatusCode.Unauthorized:
await DisplayAlert(
"Failed to Login",
"Incorrect username/password",
"OK");
break;
case HttpStatusCode.ServiceUnavailable:
await DisplayAlert(
"Failed to Login",
"Server unavailable, check connection",
"OK");
break;
case HttpStatusCode.InternalServerError:
await DisplayAlert(
"Failed to Login",
"Server error",
"OK");
break;
}
break;
case HttpStatusCode.ServiceUnavailable:
await DisplayAlert(
"Failed to Register",
"Server unavailable, check connection",
"OK");
break;
case HttpStatusCode.InternalServerError:
await DisplayAlert(
"Failed to Register",
"Username/Email may be taken",
"OK");
break;
}
}
}
}