// Save user id on device to use it later
async void LoginIsSuccessful(UsersModel user)
{
// Add the logged in user into local table
if (await userRepository.AddUser(user) == 0)
{
//DisplayAlertMessage(userRepository.Message);
return;
}
// Set Shared User Defaults
var plist = NSUserDefaults.StandardUserDefaults;
plist.SetBool(true, "isUserLoggedIn"); // set flag that user logged in
plist.SetString(user.Id, "userId");
// Set user settings
UserSettings.DefaultSettings.SetSettings();
// Create Table Prompts and load data from the remote server
var promptRepository = new PromptsRepository();
await promptRepository.GetTablePrompts();
// After login, get full table "user_prompts" from remote database and insert it in local database
var userPromptRepository = new UsersPromptsRepository();
await userPromptRepository.SyncAllTableUserPrompts(user.Id);
// Remove overlay
LoadingOverlay.RemoveOverlay();
// Create an instance of AppDelegate and call SetRootViewController method to display MainTabBarController after successfu login
var appDelegate = UIApplication.SharedApplication.Delegate as AppDelegate;
appDelegate.SetRootViewController(true);
}
async partial void SignInButton_TouchUpInside(UIButton sender)
{
string userEmail = userEmailTextField.Text;
string userPassword = userPasswordTextField.Text;
// If email or password do not meet requirements
if (!Validation.ValidationResult(userEmail, "email") || !Validation.ValidationResult(userPassword, "password"))
{
DisplayAlertMessage(Validation.Message);
return;
}
// Show the loading overlay on the UI
LoadingOverlay.ShowOverlay(View);
// Create instance of table Users
var user = new UsersModel()
{
Email = userEmail.ToLower(),
Password = userPassword
};
// Call REST service to send Json data
RestService rs = new RestService();
// Get Json data from server in JsonResponseModel format
Task <UsersModel> jsonResponeTask = rs.UserLoginAndRegisterJson(user, "login");
// If there was an error in PostJsonDataAsync class, display message
if (jsonResponeTask == null)
{
LoadingOverlay.RemoveOverlay();
DisplayAlertMessage(rs.Message);
return;
}
// Get user id from Json after login or display an error
// Create instance of JsonResponseModel and pass jsonResponeTask there
var jsonResponse = await jsonResponeTask;
// Get user id from Json after login or display an error
if (jsonResponse.Status == "Error")
{
LoadingOverlay.RemoveOverlay();
DisplayAlertMessage(jsonResponse.Message);
}
else if (!string.IsNullOrEmpty(jsonResponse.Id))
{
LoginIsSuccessful(jsonResponse);
}
}
void LoginView_Completed(object sender, LoginButtonCompletedEventArgs e)
{
if (e.Error != null)
{
// Handle if there was an error
LoadingOverlay.RemoveOverlay();
Console.WriteLine("There was an error. Please, try again later");
DisplayAlertMessage("There was an error. Please, try again later");
return;
}
if (e.Result.IsCancelled)
{
return;
// Handle if the user cancelled the login request
}
}
async partial void SignUpButton_TouchUpInside(UIButton sender)
{
string userPassword = userPasswordTextField.Text;
string userRepeatPassword = userRepeatPasswordTextField.Text;
// Check for empty fields
if (string.IsNullOrWhiteSpace(userPassword) || string.IsNullOrWhiteSpace(userRepeatPassword))
{
// Display an alert message
DisplayAlertMessage("All fields are required to fill in");
return;
}
// If password do not meet requirements
else if (!Validation.ValidationResult(userPassword, "password"))
{
DisplayAlertMessage(Validation.Message);
return;
}
// Check if passwords match
if (!userPassword.Equals(userRepeatPassword))
{
// Display an alert message
DisplayAlertMessage("Passwords do not match");
return;
}
// Show the loading overlay on the UI
LoadingOverlay.ShowOverlay(View);
// Add user
// Create instance of table Users
user = new UsersModel()
{
FirstName = RegisterUserSharedData.UserFirstName,
LastName = RegisterUserSharedData.UserLastName,
Email = RegisterUserSharedData.UserEmail.ToLower(),
Password = userPassword,
LoginProvider = "Email"
};
// Call REST service to send Json data
RestService rs = new RestService();
// Get Json data from server in JsonResponseModel format
Task <UsersModel> jsonResponeTask = rs.UserLoginAndRegisterJson(user, "register");
// If there was an error in PostJsonDataAsync class, display message
if (jsonResponeTask == null)
{
DisplayAlertMessage(rs.Message);
return;
}
// Create instance of JsonResponseModel and pass jsonResponeTask there
var jsonResponse = await jsonResponeTask;
// Get user status (Success/Error)
string statusUser = jsonResponse.Status;
string alertMessage = jsonResponse.Message;
// Excecutes the given code in the background
var alert = UIAlertController.Create(title: "", message: alertMessage, preferredStyle: UIAlertControllerStyle.Alert);
var okAction = UIAlertAction.Create("Ok", UIAlertActionStyle.Cancel, (obj) =>
{
// If user has been added successfully, dismiss view controller
if (statusUser == "Success")
{
var loginController = this.Storyboard.InstantiateViewController("LoginUserViewController") as LoginUserViewController;
if (loginController != null)
{
this.PresentViewController(loginController, true, null);
}
}
else if (statusUser == "Error" && alertMessage == "Email already exists")
{
//var registerController = this.Storyboard.InstantiateViewController("EnterEmailRegisterUser") as RegisterUserViewController;
//if (registerController != null)
this.NavigationController.PopViewController(true);
}
});
alert.AddAction(okAction);
this.PresentViewController(alert, true, null);
// Remove overlay
LoadingOverlay.RemoveOverlay();
}
// Facebook Authentification
void FacebookAuthentication()
{
flag = false;
// If was send true to Profile.EnableUpdatesOnAccessTokenChange method
// this notification will be called after the user is logged in and
// after the AccessToken is gotten
Profile.Notifications.ObserveDidChange((sender, e) =>
{
if (e.NewProfile == null)
{
return;
}
var accessToken = AccessToken.CurrentAccessToken.TokenString;
var request = new GraphRequest("/" + e.NewProfile.UserID, new NSDictionary("fields", "email,first_name,last_name,picture.type(large)"), accessToken, null, "GET");
request.Start((connection, result, error) =>
{
// Show the loading overlay on the UI
LoadingOverlay.ShowOverlay(View);
var userInfo = result as NSDictionary;
// Get Facebook avatar image from url
var avatarUrl = new NSUrl(userInfo["picture"].ValueForKey(new NSString("data")).ValueForKey(new NSString("url")).ToString());
var data = NSData.FromUrl(avatarUrl);
facebookImageData = data;
// string facebookAvatar = data.GetBase64EncodedString(NSDataBase64EncodingOptions.None);
// facebookAvatar = new NSString(eefacebookAvatar, NSStringEncoding.UTF8); //Encoding.ASCII.GetString(ToByteArray(data));
// Add Facebook user to database
var user = new UsersModel()
{
FirstName = userInfo["first_name"].ToString(),
LastName = userInfo["last_name"].ToString(),
Email = userInfo["email"].ToString().ToLower(),
LoginProvider = "Facebook"
};
// Call REST service to send Json data
RestService rs = new RestService();
// Get Json data from server in JsonResponseModel format
Task <UsersModel> jsonResponeTask = rs.UserLoginAndRegisterJson(user, "register");
// If there was an error in PostJsonDataAsync class, display message
if (jsonResponeTask == null)
{
LoadingOverlay.RemoveOverlay();
return;
}
// Get user id from Json after login or display an error
GetUserIdFromJson(jsonResponeTask, user);
if (error != null)
{
LoadingOverlay.RemoveOverlay();
Console.WriteLine("Error in request. Start Facebook login");
return;
}
});
});
// Set the Read and Publish permissions you want to get
loginView = new LoginButton(fbAuthButton.Frame)
{
LoginBehavior = LoginBehavior.Native,
ReadPermissions = readPermissions.ToArray()
};
// Handle actions once the user is logged in
loginView.Completed += LoginView_Completed;
// Handle actions once the user is logged out
loginView.LoggedOut += (sender, e) =>
{
// Set logout User Defaults
var plist = NSUserDefaults.StandardUserDefaults;
plist.SetBool(false, "isUserLoggedIn"); // set flag that user logged out
plist.SetString("", "userId");
plist.Synchronize();
};
// Use your System Account of Settings
//loginButton.LoginBehavior = LoginBehavior.SystemAccount;
// Add views to main view
View.AddSubview(loginView);
}
