package com.moral.common.util;

import com.moral.entity.charts.TimePeriod;
import com.moral.entity.charts.TimeUnits;

import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;
import java.util.List;

public class ReportTimeFormat {
       // 保持mysql format格式和java里format格式一致
       public final  static String YEAR_FORMAT = "yyyy";
       public final  static String MONTH_FORMAT = "yyyy-MM";
       public final  static String DAY_FORMAT = "yyyy-MM-dd";
       public final  static String HOUR_FORMAT = "yyyy-MM-dd/HH";
       public final  static String MINUTE_FORMAT = "yyyy-MM-dd/HH:mm";
       public final  static String YEAR_FORMAT_OF_MYSQL = "%Y";
       public final  static String MONTH_FORMAT_OF_MYSQL = "%Y-%m";
       public final  static String DAY_FORMAT_OF_MYSQL = "%Y-%m-%d";
       public final  static String HOUR_FORMAT_OF_MYSQL = "%Y-%m-%d/%H";
       public final  static String MINUTE_FORMAT_OF_MYSQL = "%Y-%m-%d/%H:%i";
       public static String toMySqlTimeFormat(TimeUnits timeUnits){
           switch (timeUnits){
               case YEAR: return YEAR_FORMAT_OF_MYSQL;
               case MONTH: return MONTH_FORMAT_OF_MYSQL;
               case DAY: return DAY_FORMAT_OF_MYSQL;
               case HOUR: return HOUR_FORMAT_OF_MYSQL;
               case MINUTE:return MINUTE_FORMAT_OF_MYSQL;
           }
           return "%Y-%m-%d%H:%i:%s";
       }
       public static String toMySqlActualTimeFormat(TimeUnits timeUnits){
           switch (timeUnits){
               case YEAR: return "%Y";
               case MONTH: return "%m";
               case DAY: return "%d";
               case HOUR: return "%H";
               case MINUTE:return "%i";
           }
           return "%s";
       }

    /**
     * 获取 时间区间数组 从小到大
     * @param timePeriod
     * @return
     */
       public static List<String> makeTimeList(TimePeriod timePeriod){
           Calendar start = Calendar.getInstance();
           start.setTime(timePeriod.getStartTime());
           Calendar end = Calendar.getInstance();
           end.setTime(timePeriod.getEndTime());
           List<String> timeList = new ArrayList<>();
           String formatStyle = "";
           int timeUnit = 0;
           switch (timePeriod.getTimeUnits()){
               case YEAR: formatStyle = YEAR_FORMAT;
                   timeUnit = Calendar.YEAR;break;
               case MONTH: formatStyle =MONTH_FORMAT;
                   timeUnit = Calendar.MONTH;break;
               case DAY: formatStyle =DAY_FORMAT;
                   timeUnit = Calendar.DAY_OF_YEAR;break;
               case HOUR: formatStyle =HOUR_FORMAT;
                   timeUnit = Calendar.HOUR;break;
               case MINUTE: formatStyle =MINUTE_FORMAT;
                   timeUnit = Calendar.MINUTE;break;
           }
           do{
               String time = dateToString(start.getTime(),formatStyle);
               timeList.add(time);
               start.add(timeUnit,1);
           }
           while (start.getTimeInMillis()<end.getTimeInMillis());
           return timeList;
       }

    /**
     * 时间计算方法
     * @param date 待计算方法
     * @param timeUnits 处理单位，年，月，日，时，分
     * @param amount 差值，负数为减，正数为加
     * @return
     */
     public static Date dateCalc(Date date,TimeUnits timeUnits,Integer amount) {
         Calendar rightNow = Calendar.getInstance();
         rightNow.setTime(date);
         rightNow.add(toCalendarTimeUnit(timeUnits), amount);
         return rightNow.getTime();
       }
     private static int toCalendarTimeUnit(TimeUnits timeUnits) {
           switch (timeUnits) {
               case YEAR: return  Calendar.YEAR;
               case MONTH: return  Calendar.MONTH;
               case DAY: return  Calendar.DAY_OF_YEAR;
               case HOUR: return  Calendar.HOUR;
               default: return  Calendar.MINUTE;
           }
     }
     /**"yyyy-MM-dd hh:mm:ss"
     * 把指定的date类型时间转换为指定格式的字符串
     * @param date
     * @return
     */
    private static String dateToString(Date date,String formatStyle) {
        SimpleDateFormat format = new SimpleDateFormat(formatStyle);
        String dateFormat = format.format(date);
        return dateFormat;
    }

}