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

public class Login {
    /**
     * The method toLogin() compares the phonenumber and password of the user with the phonenumber and password
     * from the user.txt
     *
     * @param user all users are in a list
     * @param password password of the user
     * @param phoneNumber phonenumber of the user
     * @return void
     * @author Kevin Pfannenstiel
     */
    public void toLogin(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;
            }
        }
    }

    /**
     * The method getDayNumberNew() checks if the phonenumber-input is empty.
     *
     * @param error is a boolean
     * @param phoneNumber is the input of the user
     * @return the boolean error
     * @author Madeleine Vigier
     */
    public boolean isError(boolean error, String phoneNumber) {
        if (phoneNumber.isEmpty()) {
            error = true;
        }
        return error;
    }
}