package irbs.defaultManager.utils;

import irbs.defaultManager.enums.IntervalType;
import liquibase.util.StringUtil;

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

public class DateUtil {

    public static Date toDate(String dtStr) {
        if(dtStr != null){
            dtStr = dtStr.replaceAll("[-./年月日]","");
            try {
                return io.sc.platform.core.util.DateUtil.parseDate(dtStr, "yyyyMMdd");
            } catch (ParseException e) {
                e.printStackTrace();
            }
        }
        return null;
    }

    public static Date toDateHLine(String dtStr) {
        if(dtStr != null){
            dtStr = dtStr.replaceAll("[-./年月日]","-");
            if(dtStr.length()==8){//如果时YYYYMMDD格式
                dtStr = dtStr.substring(0,4) + "-" + dtStr.substring(4,6) + "-" + dtStr.substring(6);
            }
            try {
                return io.sc.platform.core.util.DateUtil.parseDate(dtStr, "yyyy-MM-dd");
            } catch (ParseException e) {
                e.printStackTrace();
            }
        }
        return null;
    }

    public static Date toDateTimeHLine(String dtStr) {
        if(dtStr != null){
            dtStr = dtStr.replaceAll("[-./年月日]","-");
            if(dtStr.substring(0, dtStr.indexOf(" ")).length() == 8){//如果时YYYYMMDD HH:mm:ss格式
                dtStr = dtStr.substring(0,4) + "-" + dtStr.substring(4,6) + "-" + dtStr.substring(6);
            }
            try {
                return io.sc.platform.core.util.DateUtil.parseDate(dtStr, "yyyy-MM-dd HH:mm:ss");
            } catch (ParseException e) {
                e.printStackTrace();
            }
        }
        return null;
    }

    public static String toString(Date dt, String format){
        if(dt != null){
            return io.sc.platform.core.util.DateUtil.formatDate(dt, format);
        }
        return null;
    }

    public static String getCurrentDateString(){
        Date currentDate = new Date();
        return toString(currentDate, "yyyyMMdd");
    }

    public static String getCurrentDateHLineString(){
        Date currentDate = new Date();
        return toString(currentDate, "yyyy-MM-dd");
    }

    public static Date getCurrentDate(){
        Calendar calendar = Calendar.getInstance();
        return calendar.getTime();
    }

    public static String getLastMonthEndString(){
        Calendar calendar = Calendar.getInstance();
        calendar.set(Calendar.DAY_OF_MONTH, 0);
        return toString(calendar.getTime(), "yyyyMMdd");
    }

    public static Date addDays(int day){
        Calendar calendar = Calendar.getInstance();
        calendar.set(Calendar.DAY_OF_MONTH, calendar.get(Calendar.DAY_OF_MONTH) + day);
        return calendar.getTime();
    }

    public static Date addDays(Date dt, int day){
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(dt);
        calendar.set(Calendar.DAY_OF_MONTH, calendar.get(Calendar.DAY_OF_MONTH) + day);
        return calendar.getTime();
    }

    public static int compareDate(String dt1, String dt2){
        int r = 0;
        if(dt1 != null && dt2 != null){
            dt1 = dt1.replaceAll("[-./年月日]","");
            dt2 = dt2.replaceAll("[-./年月日]","");
            Double d1 = Double.valueOf(dt1);
            Double d2 = Double.valueOf(dt2);
            if(d1.doubleValue() == d2.doubleValue()){
                r = 0;
            }else if(d1.doubleValue() > d2.doubleValue()){
                r = 1;
            }else{
                r = -1;
            }
        }
        return r;
    }

    public static int compareDate(Date dt1, Date dt2){
        int r = 0;
        if(dt1 != null && dt2 != null){
            long dif = dt2.getTime() - dt1.getTime();
            if(dif == 0){
                r = 0;
            }else if(dif < 0){
                r = 1;
            }else{
                r = -1;
            }
        }
        return r;
    }

    /**
     * 计算日期差
     * @param dt1 第一个日期
     * @param dt2 第二个日期
     * @param interval 日期差类型
     * @return
     */
    public static Double dateDiff(String dt1, String dt2, String interval) throws Exception {
        if(StringUtil.isNotEmpty(dt1) && StringUtil.isNotEmpty(dt2)){
            dt1 = dt1.replaceAll("[-./年月日]","");
            dt2 = dt2.replaceAll("[-./年月日]","");
            SimpleDateFormat format = new SimpleDateFormat("yyyyMMdd");
            Date d1 = format.parse(dt1);
            Date d2 = format.parse(dt2);
            long dif = d2.getTime() - d1.getTime();
            Long ret = null;
            if(IntervalType.年.code().equalsIgnoreCase(interval)){
                ret = dif/3600/1000/24/365;
            }else if(IntervalType.月.code().equalsIgnoreCase(interval)){
                ret = dif/3600/1000/24/30;
            }else if(IntervalType.日.code().equalsIgnoreCase(interval)){
                ret = dif/3600/1000/24;
            }else{
                ret = dif/3600/1000/24/365;
            }
            return ret.doubleValue();
        }
        return 0d;
    }
}