import java.util.ArrayList;
import java.util.Scanner;

public class Login {
    public void Einloggen(ArrayList<User> user, String password, String phoneNumber) {

        Scanner leser = new Scanner(System.in);

        System.out.println();
        int i = 0;

        while (true) {

            boolean error = false;
            error = isError(error, phoneNumber);

            for (User user1 : user) {
                if (!error) {
                    if (user1.getPassword().equals(password) && user1.getPhonenumber().equals(phoneNumber)) {
                        System.out.println("");
                        System.out.println("\t\t\tANMELDUNG");
                        System.out.println();
                        System.out.println("Herzlich Willkommen " + user1.getNameParent1() + " und " + user1.getNameParent2() + ", Ihr Login war erfolgreich!");
                        i++;
                        break;
                    }
                    else if (!(user1.getPassword().equals(password) && user1.getPhonenumber().equals(phoneNumber))) {
                        System.out.println("Login fehlgeschlagen. Versuchen Sie es erneut.");
                        System.out.println("");
                        System.out.print("Telefonnummer: ");
                        phoneNumber = leser.nextLine();
                        System.out.print("Passwort: ");
                        password = leser.nextLine();
                        break;
                    }
                }
            }
            if (i > 0) {
                break;
            }
        }
    }

    public boolean isError(boolean error, String phoneNumber) {
        if (phoneNumber.isEmpty()) {
            error = true;
        }
        return error;
    }
}