package datetime;

import java.time.ZonedDateTime;
import java.time.ZoneId;
import java.time.Instant;
import java.time.format.DateTimeFormatter;
import java.time.temporal.ChronoUnit;
import java.util.Locale;
import java.util.MissingResourceException;
import java.util.InputMismatchException;
import java.util.ResourceBundle;
import java.util.Scanner;
import java.lang.String;


public class DateTimeProgramm {

    private static final String RU_LANG = "RU";

    public static void main(String[] args) {
        try {

            System.out.println("Выберете язык: \n en - EN\n ru - RU \n uz - UZ\n");

            Scanner scanner = new Scanner(System.in);
            String localeStr = scanner.next();
            System.out.println(Locale.forLanguageTag(localeStr));
            Locale.setDefault(new Locale(localeStr));
            ResourceBundle resourceBundle = ResourceBundle.getBundle("messages");

            System.out.println(resourceBundle.getString("languageSelected"));
            System.out.println(resourceBundle.getString("insertTheNumber"));

            long num = scanner.nextLong();
            Instant dateTime = Instant.ofEpochMilli(num);
            scanner.close();

            ZonedDateTime zonedDateTime = dateTime.atZone(ZoneId.of("Asia/Tashkent"));
            System.out.println(zonedDateTime.format(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss")));

            long daysBetween = ChronoUnit.DAYS.between(Instant.ofEpochMilli(0L), dateTime);
            long weeksBetween = daysBetween / 7;

            if (localeStr.equalsIgnoreCase(RU_LANG)) {
                printForRuLocale(weeksBetween, daysBetween, resourceBundle);
            } else {
                printForOtherLocale(weeksBetween, daysBetween, resourceBundle);
            }
            System.out.println(resourceBundle.getString("bye"));

        } catch (MissingResourceException | InputMismatchException exc) {
            System.out.println("Вы ввели недопустимое значение.");
        }
    }

    private static void printForOtherLocale(long weeks, long days, ResourceBundle resourceBundle) {
        System.out.print(weeks + " ");
        if (weeks == 1) {
            System.out.print(resourceBundle.getString("weeks") + " ");
        } else {
            System.out.print(resourceBundle.getString("weeks1") + " ");
        }

        System.out.print(days + " ");

        if (days == 1) {
            System.out.print(resourceBundle.getString("day1") + " ");
        } else {
            System.out.print(resourceBundle.getString("day2") + " ");
        }
    }

    private static void printForRuLocale(long weeks, long days, ResourceBundle resourceBundle) {
        long lastDigitDay = days % 10;
        long lastDigitWeek = weeks % 10;
        long penultimateNumberDay = days / 10 % 10;
        long penultimateNumberWeek = weeks / 10 % 10;

        System.out.print(weeks + " ");
        if (penultimateNumberWeek == 1) {
            System.out.print(resourceBundle.getString("weeks2") + " ");
        } else if (lastDigitWeek == 1) {
            System.out.print(resourceBundle.getString("weeks") + " ");
        } else if (lastDigitWeek >= 2 & lastDigitWeek <= 4) {
            System.out.print(resourceBundle.getString("weeks1") + " ");
        } else
            System.out.print(resourceBundle.getString("weeks2") + " ");

        System.out.print(days + " ");

        if (penultimateNumberDay == 1) {
            System.out.println(resourceBundle.getString("day3") + " ");
        } else if (lastDigitDay == 1) {
            System.out.println(resourceBundle.getString("day1") + " ");
        } else if (lastDigitDay >= 2 & lastDigitDay <= 4) {
            System.out.println(resourceBundle.getString("day2") + " ");
        } else
            System.out.println(resourceBundle.getString("day3") + " ");
    }
}