async void RelogUserAsync()
{
logoutStatus.Text = "";
activityIndicator.IsVisible = true;
activityIndicator.IsRunning = true;
var httpTask = await Task.Run <string>(() => HttpRequestHandler.PostUserLogout());
var httpResult = httpTask.ToString();
if (httpResult == "Success")
{
//Clear user session
userSession.userLoginCookie = "";
userSession.username = "";
Settings.Username = string.Empty;
Settings.Password = string.Empty;
logoutStatus.Text = "Please re-login with your new password.";
logoutStatus.TextColor = Color.Default;
logoutStatus.FontAttributes = FontAttributes.None;
activityIndicator.IsVisible = false;
activityIndicator.IsRunning = false;
await Task.Delay(3000);
//App.Current.MainPage = new rootPage { Detail = new NavigationPage(new loginPage())
App.Current.MainPage = new rootPage();
var page = App.Current.MainPage as rootPage;
var loginPage = new loginPage();
page.changePage(loginPage);
}
else
{
logoutStatus.TextColor = Color.Red;
logoutStatus.FontAttributes = FontAttributes.None;
logoutStatus.Text = "Error: Logout Unsuccessful, " + httpResult;
}
activityIndicator.IsVisible = false;
activityIndicator.IsRunning = false;
}
async void onUpdateBtnClicked(object sender, EventArgs e)
{
string oldPassword = "", newPassword = "", confPassword = "";
bool isInputsValid = true;
errorLbl.Text = "";
//Inputs validation
if (String.IsNullOrEmpty(confPasswordInput.Text) || String.IsNullOrWhiteSpace(confPasswordInput.Text))
{
errorLbl.Text = "Please enter Confirm Password. ";
isInputsValid = false;
}
else
{
confPassword = confPasswordInput.Text;
}
if (String.IsNullOrEmpty(newPasswordInput.Text) || String.IsNullOrWhiteSpace(newPasswordInput.Text))
{
errorLbl.Text = "Please enter New Password. ";
isInputsValid = false;
}
else
{
newPassword = newPasswordInput.Text;
}
//if new password and confirm password are not empty, check if they matches
if (isInputsValid)
{
if (confPassword != newPassword)
{
errorLbl.Text = "Confirm Password does not match. ";
isInputsValid = false;
}
else
{
if (String.IsNullOrEmpty(oldPasswordInput.Text) || String.IsNullOrWhiteSpace(oldPasswordInput.Text))
{
errorLbl.Text = "Please enter Old Password. ";
isInputsValid = false;
}
else
{
oldPassword = oldPasswordInput.Text;
}
if (isInputsValid)
{
activityIndicator.IsVisible = true;
activityIndicator.IsRunning = true;
//Send HTTP request to update password
string httpTask = await Task.Run <string>(() => HttpRequestHandler.adminChangePassword(oldPassword, newPassword, confPassword));
string httpResult = httpTask.ToString();
activityIndicator.IsVisible = false;
activityIndicator.IsRunning = false;
if (httpResult == "Successfully changed password!")
{
await DisplayAlert("Success", "Password has been successfully changed! You will be logged out now.", "OK");
adminAuth.DeleteCredentials();
App.Current.MainPage = new rootPage();
var page = App.Current.MainPage as rootPage;
var loginPage = new loginPage();
page.changePage(loginPage);
}
else
{
await DisplayAlert("Failed", httpResult, "OK");
errorLbl.Text = httpResult;
}
}
}
}
}
async void OnRegisterButtonClicked(object sender, EventArgs e)
{
bool isErrorPresent = false;
string errorMessage = "";
//Validate inputs
if (confPasswordEntry.Text != passwordEntry.Text)
{
isErrorPresent = true;
errorMessage = "Confirm password does not match";
}
if (String.IsNullOrEmpty(passwordEntry.Text))
{
isErrorPresent = true;
errorMessage = "Please enter your Password";
}
else
{
if (!Regex.IsMatch(passwordEntry.Text, @"^[a-zA-Z0-9]*$"))
{
isErrorPresent = true;
errorMessage = "Wrong format for Password. Password may only contain alphabets and numbers.";
}
}
if (String.IsNullOrEmpty(usernameEntry.Text))
{
isErrorPresent = true;
errorMessage = "Please enter your Username";
}
else
{
if (!Regex.IsMatch(usernameEntry.Text, @"^[a-zA-Z0-9]*$"))
{
isErrorPresent = true;
errorMessage = "Wrong format for Username. Username may only contain alphabets and numbers.";
}
}
if (String.IsNullOrEmpty(emailEntry.Text))
{
isErrorPresent = true;
errorMessage = "Please enter your Email";
}
else
{
if (!Regex.IsMatch(emailEntry.Text, @"^[\w-\.]+@([\w-]+\.)+[\w-]{2,4}$"))
{
isErrorPresent = true;
errorMessage = "Wrong format for Email. e.g. [email protected]";
}
}
if (String.IsNullOrEmpty(fullNameEntry.Text))
{
isErrorPresent = true;
errorMessage = "Please enter your Full Name";
}
else
{
if (!Regex.IsMatch(fullNameEntry.Text, @"^[a-zA-Z]+(([',. -][a-zA-Z ])?[a-zA-Z]*)*$"))
{
isErrorPresent = true;
errorMessage = "Wrong format for Full Name. Full name must be alphabetic.";
}
}
if (isErrorPresent)
{
//Display error message if inputs have error
await DisplayAlert("Failed", errorMessage, "OK");
}
else
{
//Send HTTP request to register user
activityIndicator.IsVisible = true;
activityIndicator.IsRunning = true;
string httpTask = await Task.Run <string>(() => HttpRequestHandler.PostRegisterNewUser(fullNameEntry.Text, emailEntry.Text, usernameEntry.Text, passwordEntry.Text, confPasswordEntry.Text));
string httpResult = httpTask.ToString();
if (httpResult == "Registration successful")
{
await DisplayAlert("Success", "You have successfully registered an account! Login now.", "OK");
var page = App.Current.MainPage as rootPage;
var loginPage = new loginPage();
page.changePage(loginPage);
}
}
}
async void LogoutUserAsync()
{
logoutStatus.Text = "";
activityIndicator.IsVisible = true;
activityIndicator.IsRunning = true;
//Clear user session
userSession.userLoginCookie = "";
userSession.username = "";
Settings.Username = string.Empty;
Settings.Password = string.Empty;
Settings.Role = string.Empty;
logoutStatus.Text = "You have successfully logout! You will be redirected to login page shortly.";
logoutStatus.TextColor = Color.Default;
logoutStatus.FontAttributes = FontAttributes.None;
activityIndicator.IsVisible = false;
activityIndicator.IsRunning = false;
await Task.Delay(1000);
App.Current.MainPage = new rootPage();
var page = App.Current.MainPage as rootPage;
var loginPage = new loginPage();
page.changePage(loginPage);
/*var httpTask = await Task.Run<string>(() => HttpRequestHandler.PostUserLogout());
* var httpResult = httpTask.ToString();
*
* if (httpResult == "Success")
* {
* //Clear user session
* userSession.userLoginCookie = "";
* userSession.username = "";
* Settings.Username = string.Empty;
* Settings.Password = string.Empty;
* Settings.Role = string.Empty;
* logoutStatus.Text = "You have successfully logout! You will be redirected to login page shortly.";
* logoutStatus.TextColor = Color.Default;
* logoutStatus.FontAttributes = FontAttributes.None;
*
* activityIndicator.IsVisible = false;
* activityIndicator.IsRunning = false;
* await Task.Delay(1000);
*
* //App.Current.MainPage = new rootPage { Detail = new NavigationPage(new loginPage())
* App.Current.MainPage = new rootPage();
* var page = App.Current.MainPage as rootPage;
* var loginPage = new loginPage();
* page.changePage(loginPage);
*
* }
* else
* {
* logoutStatus.TextColor = Color.Red;
* logoutStatus.FontAttributes = FontAttributes.None;
* logoutStatus.Text = "Error: Logout Unsuccessful, " + httpResult;
* }*/
}
