package src;

import java.time.LocalDate;
import java.time.format.DateTimeFormatter;
import java.time.temporal.ChronoUnit;

public class DateUtil {
    private static final DateTimeFormatter FORMATTER = DateTimeFormatter.ofPattern("dd.MM.yyyy");

    public static LocalDate parse(String input) {
        return LocalDate.parse(input, FORMATTER);
    }

    public static long yearsSince(String start) {
        LocalDate d1 = parse(start);
        return ChronoUnit.YEARS.between(d1, LocalDate.now());
    }

    public static long yearsSince(LocalDate start) {
        return ChronoUnit.YEARS.between(start, LocalDate.now());
    }

    public static LocalDate today() {
        return LocalDate.now();
    }

    public static String format(LocalDate date) {
        return date.format(FORMATTER);
    }

    public static boolean isValidDate(String input) {
        try {
            LocalDate.parse(input, FORMATTER);
            return true;
        } catch (Exception e) {
            return false;
        }
    }
}