import android.text.TextUtils;

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

public class DateTimeUtils {

    private static final SimpleDateFormat yyyyMMddHHmm = new SimpleDateFormat("yyyy-MM-dd HH:mm");

    private static final SimpleDateFormat yyyyMMddHHmmss = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

    private static final SimpleDateFormat yyyyMMddTHHmmssSSS = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS");

    static final SimpleDateFormat dateFormater = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

    static final SimpleDateFormat dateFormater5 = new SimpleDateFormat("yyyy年MM月dd日");

    static final SimpleDateFormat dateFormater6 = new SimpleDateFormat("yyyy年MM月dd日 HH:mm");

    static final SimpleDateFormat dateFormater7 = new SimpleDateFormat("MM月dd日 HH:mm");

    static final SimpleDateFormat dateFormater8 = new SimpleDateFormat("HH:mm");


    public static String localToService(Date date) {
        return yyyyMMddTHHmmssSSS.format(date);
    }

    public static String getFriendlyTime(Date date) {

        if (date == null) {
            return "";
        }

        Calendar calendar = Calendar.getInstance();
        calendar.setTime(date);
        return getFriendlyTime(calendar);
    }


    public static String getFriendlyTime(Calendar serverCalendar) {

        if (serverCalendar == null) {
            return "";
        }

        Calendar localCalendar = Calendar.getInstance();

        int serverYear = serverCalendar.get(Calendar.YEAR);
        int serverMonth = serverCalendar.get(Calendar.MONTH);
        int serverDay = serverCalendar.get(Calendar.DAY_OF_MONTH);

        int localYear = localCalendar.get(Calendar.YEAR);
        int localMonth = localCalendar.get(Calendar.MONTH);
        int localDay = localCalendar.get(Calendar.DAY_OF_MONTH);

        if (serverYear < localYear) {
            return dateFormater6.format(serverCalendar.getTime());
        } else if (serverYear == localYear && serverMonth < localMonth) {
            return dateFormater7.format(serverCalendar.getTime());
        } else if (serverYear == localYear && serverMonth == localMonth && serverDay < localDay) {
            if (localDay - serverDay == 1) {
                return "昨天 " + dateFormater8.format(serverCalendar.getTime());
            } else if (localDay - serverDay == 2) {
                return "前天 " + dateFormater8.format(serverCalendar.getTime());
            } else {
                return dateFormater7.format(serverCalendar.getTime());
            }
        } else if (serverYear == localYear && serverMonth == localMonth && serverDay == localDay) {
            long hour = (localCalendar.getTimeInMillis() - serverCalendar.getTimeInMillis()) / 3600000;
            if (hour == 0) {
                long minute = (localCalendar.getTimeInMillis() - serverCalendar.getTimeInMillis()) / 60000;
                if (minute < 1) {
                    return "剛剛";
                } else {
                    return minute + "分鐘前";
                }
            } else if (hour == 1) {
                return hour + "小時前";
            } else {
                return "今天 " + dateFormater8.format(serverCalendar.getTime());
            }
        }

        return dateFormater6.format(serverCalendar.getTime());
    }

    /**
     * @param date
     * @return
     */
    public static Date serviceTypeToDate(String date) {

        if (TextUtils.isEmpty(date)) {
            return null;
        }

        try {
            if (!date.contains(".")) {
                date = date + ".000";
            }
            return yyyyMMddTHHmmssSSS.parse(date);
        } catch (ParseException e) {
            e.printStackTrace();
        }
        return null;
    }

    /**
     * @param date
     * @return
     */
    public static String serviceTypeToLocal2(String date) {
        String str = "";
        try {
            if (!date.contains(".")) {
                date = date + ".000";
            }
            Date date2 = yyyyMMddTHHmmssSSS.parse(date);
            str = yyyyMMddHHmm.format(date2);
        } catch (ParseException e) {
            e.printStackTrace();
        }
        return str;
    }

}