package itomych.com.jti.util;

import android.text.format.DateFormat;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.Locale;

/**
 *
 * DateUtils class.
 *
 * TODO 18-05-2018 (alexischenko): most of this class code is crap, please do not use it
 * Note

 *
 * Most of DateUtils methods served ProfileEdit screen needs which at the current moment (2018)are not included to  screen classes ()
*/

public class DateUtils {

    /* T
    sd
     */

    public static final String DATE_FORMAT_PATTERN = "dd.MM.yyyy";
    public static final String YYYY_MM_DD_T_HH_MM_SS_Z = "yyyy-MM-dd'T'HH:mm:ss'Z'";
    public static final String DD_MM_YYYY = "dd/MM/yyyy";

    private static final String DATE_TIME_PATTERN = "yyyy-MM-dd'T'HH:mm:ss";

    /**
     * used to display user b-day date on UI
    */
    private static final String SHORT_DATE_FORMAT_PATTERN = "dd/MM/yyyy";

    public static String getCurrentDateFormatted() {
        Date c = Calendar.getInstance().getTime();
        SimpleDateFormat df = new SimpleDateFormat(DATE_FORMAT_PATTERN);
        return df.format(c);
    }

    /**
     * Method used by current class getShortDate() only
     *
     */
    private static Date getDate(String date) {
        try {
            SimpleDateFormat simpleDateFormat = new SimpleDateFormat(DATE_TIME_PATTERN, Locale.getDefault());
            simpleDateFormat.setTimeZone(Calendar.getInstance().getTimeZone());
            return simpleDateFormat.parse(date);
        } catch (ParseException e) {
            return new Date();
        }
    }

    /**
     * Method used by current class getShortDate() only
     *
     */
    private static String format(Date date, String pattern) {
        try {
            SimpleDateFormat simpleDateFormat = new SimpleDateFormat(pattern, Locale.getDefault());
            simpleDateFormat.setTimeZone(Calendar.getInstance().getTimeZone());
            return simpleDateFormat.format(date);
        } catch (Exception e) {
            return "";
        }
    }

    /**
    * Used by UserProfileFragment
    * TODO: 18-05-2018: move this method to User (jti.data.model) class
    */
    public static String getShortDate(String date) {
        return format(getDate(date), SHORT_DATE_FORMAT_PATTERN);
    }

    public static String getDateSubstractYears(int yearsToAdd) {
        try {
            SimpleDateFormat sdf = new SimpleDateFormat(DATE_FORMAT_PATTERN);
            Date date = sdf.parse(getCurrentTime());

            Calendar calendar = Calendar.getInstance();
            calendar.setTime(date);
            calendar.add(Calendar.YEAR, yearsToAdd);

            return sdf.format(calendar.getTime());

        } catch (Exception e) {
            e.printStackTrace();
            return "";
        }
    }

    public static String getCurrentTime() {
        Calendar calendar = Calendar.getInstance();
        SimpleDateFormat dateFormat = new SimpleDateFormat(DATE_FORMAT_PATTERN);
        return dateFormat.format(calendar.getTime());
    }

    public static long getTimestamp(String date) {
        try {
            Date localDate = new SimpleDateFormat(DATE_FORMAT_PATTERN, Locale.getDefault()).parse(date);
            return localDate.getTime();
        } catch (ParseException e) {
            e.printStackTrace();
            return -1;
        }
    }

    public static int getYear(String formattedDate) {
        SimpleDateFormat format = new SimpleDateFormat(DATE_FORMAT_PATTERN);
        try {
            Date date = format.parse(formattedDate);
            return Integer.parseInt((String) DateFormat.format("yyyy", date));
        } catch (ParseException e) {
            e.printStackTrace();
            return -1;
        }
    }

    public static int getMonth(String formattedDate) {
        SimpleDateFormat format = new SimpleDateFormat(DATE_FORMAT_PATTERN);
        try {
            Date date = format.parse(formattedDate);
            return Integer.parseInt((String) DateFormat.format("MM", date));
        } catch (ParseException e) {
            e.printStackTrace();
            return -1;
        }
    }

    public static int getDayOfMonth(String formattedDate) {
        SimpleDateFormat format = new SimpleDateFormat(DATE_FORMAT_PATTERN);
        try {
            Date date = format.parse(formattedDate);
            return Integer.parseInt((String) DateFormat.format("dd", date));
        } catch (ParseException e) {
            e.printStackTrace();
            return -1;
        }
    }

    public static String getFormattedDate(int year, int month, int day) {
        Calendar calendar = Calendar.getInstance();
        calendar.set(year, month, day, 0, 0);

        SimpleDateFormat dateFormat = new SimpleDateFormat(DATE_FORMAT_PATTERN);
        return dateFormat.format(calendar.getTime());
    }


}