private async void Login()
{
//null or empty field validation, check weather email and password is null or empty
if (string.IsNullOrEmpty(Email) || string.IsNullOrEmpty(Password))
{
await App.Current.MainPage.DisplayAlert("Empty Values", "Please enter Email and Password", "OK");
}
else
{
//call GetUser function which we define in Firebase helper class
var user = await FirebaseHelper.GetUser(Email);
//firebase return null valuse if user data not found in database
if (user != null)
{
if (Email == user.Email && Password == user.Password)
{
await App.Current.MainPage.DisplayAlert("Login Success", "", "Ok");
//Navigate to Wellcom page after successfuly login
//pass user email to welcom page
await App.Current.MainPage.Navigation.PushAsync(new WelcomPage(Email));
}
else
{
await App.Current.MainPage.DisplayAlert("Login Fail", "Please enter correct Email and Password", "OK");
}
}
else
{
await App.Current.MainPage.DisplayAlert("Login Fail", "User not found", "OK");
}
}
}
