package com.myproject.util;

import com.csvreader.CsvWriter;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.google.common.collect.Lists;
import com.google.common.collect.Maps;
import com.myproject.Constants;
import com.myproject.bean.update.qisda.OutItem;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.context.i18n.LocaleContextHolder;

import java.io.File;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.*;

/**
 * Date Utility Class used to convert Strings to Dates and Timestamps
 *
 * @author <a href="mailto:matt@raibledesigns.com">Matt Raible</a>
 *         Modified by <a href="mailto:dan@getrolling.com">Dan Kibler </a>
 *         to correct time pattern. Minutes should be mm not MM (MM is month).
 */
public final class DateUtil {
    private static Log log = LogFactory.getLog(DateUtil.class);
    private static final String TIME_PATTERN = "HH:mm";

    /**
     * Checkstyle rule: utility classes should not have public constructor
     */
    private DateUtil() {
    }

    /**
     * Return default datePattern (MM/dd/yyyy)
     *
     * @return a string representing the date pattern on the UI
     */
    public static String getDatePattern() {
        Locale locale = LocaleContextHolder.getLocale();
        String defaultDatePattern;
        try {
            defaultDatePattern = ResourceBundle.getBundle(Constants.BUNDLE_KEY, locale)
                    .getString("date.format");
        } catch (MissingResourceException mse) {
            defaultDatePattern = "MM/dd/yyyy";
        }

        return defaultDatePattern;
    }

    public static String getDateTimePattern() {
        return DateUtil.getDatePattern() + " HH:mm:ss";
    }


    public static String toDateTimeString(Date aDate) {
        return toDateString(aDate, getDateTimePattern());
    }

    public static String toDateString(Date aDate) {
        return toDateString(aDate,getDatePattern());
    }



    public static String toDateString(long time, String aMask){
        return toDateString(new Date(time),aMask);
    }

    public static String toDateString(Date aDate, String aMask) {
        SimpleDateFormat df = null;
        String returnValue = "";

        if (aDate == null) {
            log.warn("aDate is null!");
        } else {
            df = new SimpleDateFormat(aMask);
            returnValue = df.format(aDate);
        }

        return (returnValue);
    }

    public static Date toDate(final String strDate) {
        return toDate(strDate, getDatePattern());
    }

    public static Date toDate(String strDate,String aMask){
        SimpleDateFormat df;
        Date date = null;
        df = new SimpleDateFormat(aMask);

        if (log.isDebugEnabled()) {
            log.debug("converting '" + strDate + "' to date with mask '" + aMask + "'");
        }

        try {
            date = df.parse(strDate);
        } catch (ParseException pe) {
            log.error("ParseException: " + pe);
            //throw new ParseException(pe.getMessage(), pe.getErrorOffset());
        }

        return (date);
    }

    /**
     * 获取距离今天dayFromToday 天的不带时间的日期(今天是0,昨天是-1,明天是1)
     */
    public static Date getNoTimeFromToday(int dayFromToday){
        Calendar c = noTimeCalendar();
        c.add(Calendar.DAY_OF_YEAR, dayFromToday);
        return  c.getTime();
    }

    private static Calendar noTimeCalendar(){
        Calendar c = Calendar.getInstance();
        c.set(Calendar.HOUR, 0);
        c.set(Calendar.MINUTE, 0);
        c.set(Calendar.SECOND,0);
        c.set(Calendar.MILLISECOND, 0);
        return c;
    }

    /**
     * 将日期添加一天,时间设置为00:00:00
     */
    public static Date addOneDayNoTime(Date date){
        Calendar c = Calendar.getInstance();
        c.setTime(date);
        c.set(Calendar.HOUR_OF_DAY, 0);
        c.set(Calendar.MINUTE, 0);
        c.set(Calendar.SECOND,0);
        c.set(Calendar.MILLISECOND, 0);
        c.add(Calendar.DAY_OF_YEAR, 1);
        return c.getTime();
    }

    /**
     * 日期+天数
     * @param date
     * @param days
     * @return
     */
    public static Date addDays(Date date, int days){
        Calendar c = Calendar.getInstance();
        c.setTime(date);
        c.add(Calendar.DAY_OF_YEAR, days);
        return c.getTime();
    }

    public static Date getMinDate(Date date0, Date date1){
        return date0.before(date1)? date0 : date1;
    }

    public static Date getMaxDate(Date date0, Date date1){
        return date0.after(date1)? date0 : date1;
    }



    public static class Req{
        private String seq;
        private int op;
        private int step;
        private Map<String,String> data;

        public String getSeq() {
            return seq;
        }

        public void setSeq(String seq) {
            this.seq = seq;
        }

        public int getOp() {
            return op;
        }

        public void setOp(int op) {
            this.op = op;
        }

        public int getStep() {
            return step;
        }

        public void setStep(int step) {
            this.step = step;
        }

        public Map<String, String> getData() {
            return data;
        }

        public void setData(Map<String, String> data) {
            this.data = data;
        }
    }

    public static void main(String args[]) throws Exception {


    }
}