package com.example.myapplication.utils;


import android.text.TextUtils;

import com.orhanobut.logger.Logger;

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

public class DateUtils {
    private static final String UNIT_MONTH = "月前";
    private static final String UNIT_DAY = "天前";
    private static final String UNIT_HOUR = "小时前";
    private static final String UNIT_MINUTE = "分钟前";

    public static final String TYPE_CHAR_FORMAT_DAY = "yyyy年MM月dd日";
    public static final String TYPE_FULL_COMMON_FORMAT = "yyyy-MM-dd HH:mm:ss";
    public static final String TYPE_COMMON_FORMAT_DAY = "yyyy-MM-dd";

    public static final String TYPE_FORMAT_MONTH = "yyyy-MM";
    public static final String TYPE_MONTHY_DAY = "MM-dd";


    public static String formatDate(String oldDateType, String newDateType, String value) {
        final SimpleDateFormat format = new SimpleDateFormat(oldDateType);
        Logger.d("values:  " + value);
        Date date = null;
        try {
            date = format.parse(value);
        } catch (ParseException e) {
            Logger.e("format date error,please check it.");
            return value;
        }
        final SimpleDateFormat newFormat = new SimpleDateFormat(newDateType);
        return newFormat.format(date);
    }

    /**
     * 传入时间及格式
     *
     * @param format 格式
     * @param value  时间
     * @return 特定格式时间
     */
    public static String getShowTime(String format, String value) {
        SimpleDateFormat sf = new SimpleDateFormat(format);
        try {
            Date date = sf.parse(value);
            long targetTime = date.getTime();
            return getShowTime(targetTime);
        } catch (ParseException e) {
            return 1 + UNIT_MINUTE;
        }
    }


    /**
     * 传入时间及格式
     *
     * @param time long类型时间
     * @return 特定格式时间
     */
    public static String getShowTime(long time) {
        Date nowDate = new Date();
        long nowTime = nowDate.getTime();
        long differTime = nowTime - time;
        long minute = 1000 * 60;
        if (differTime <= 0 || differTime < minute) {
            return 1 + UNIT_MINUTE;
        }

        long hour = 1000 * 60 * 60;
        if (differTime < hour) {
            long showMinute = (differTime / minute) % 60;
            return (showMinute == 0 ? 1 : showMinute) + UNIT_MINUTE;
        }
        long day = 24 * hour;
        if (differTime < day) {
            long showHour = (differTime / hour) % 24;
            return (showHour == 0 ? 1 : showHour) + UNIT_HOUR;
        }
        long month = 30 * day;
        if (differTime < month) {
            long showDay = (differTime / day) % 30;
            return (showDay == 0 ? 1 : showDay) + UNIT_DAY;
        }
        long year = 12 * month;
        if (differTime < year) {
            long showMonth = (differTime / month) % 12;
            return (showMonth == 0 ? 1 : showMonth) + UNIT_MONTH;
        }
        return 12 + UNIT_MONTH;
    }

    public static long getDateToLong(String format, String date) {
        SimpleDateFormat sf = new SimpleDateFormat(format);
        try {
            Date parse = sf.parse(date);
            return parse.getTime();
        } catch (ParseException e) {
            Logger.e(e.getLocalizedMessage());
            return new Date().getTime();
        }
    }

    public static String getDataByFormat(String format, long data) {
        SimpleDateFormat sf = new SimpleDateFormat(format);
        return sf.format(new Date(data));
    }

    public static int getMonthByDate() {
        // 获取日期实例
        Calendar calendar = Calendar.getInstance();
        // 这里要注意，月份是从0开始。
        int month = calendar.get(Calendar.MONTH);
        Logger.d("getMonthByDate :  " + (month + 1));
        return month + 1;
    }

    public static int getYearByDate() {
        // 获取日期实例
        Calendar calendar = Calendar.getInstance();
        // 这里要注意，月份是从0开始。
        int year = calendar.get(Calendar.YEAR);
        return year;
    }

    public static int getMonthByDate(long date) {
        // 获取日期实例
        Calendar calendar = Calendar.getInstance();
        // 将日历设置为指定的时间
        calendar.setTimeInMillis(date);
        // 这里要注意，月份是从0开始。
        int month = calendar.get(Calendar.MONTH);
        Logger.d("getMonthByDate :  " + (month + 1));
        return month + 1;
    }

    public static int getDayByDate() {
        // 获取日期实例
        Calendar calendar = Calendar.getInstance();
        // 这里要注意，月份是从0开始。
        int day = calendar.get(Calendar.DAY_OF_MONTH);
        return day;
    }

    public static String getPreOrNextMonth(long time, boolean isPre) {
        Calendar ca = Calendar.getInstance();//得到一个Calendar的实例
        ca.setTimeInMillis(time);
        Date now = ca.getTime();
        if (isPre) {
            ca.add(Calendar.MONTH, -1); //月份减1
        } else {
            ca.add(Calendar.MONTH, +1); //月份减1
        }
        Date lastMonth = ca.getTime(); //结果
        SimpleDateFormat sf = new SimpleDateFormat(TYPE_COMMON_FORMAT_DAY);
        return sf.format(lastMonth);
    }

    public static String getPreOrNextMonth(long time, boolean isPre, String formatType) {
        Calendar ca = Calendar.getInstance();//得到一个Calendar的实例
        ca.setTimeInMillis(time);
        Date now = ca.getTime();
        if (isPre) {
            ca.add(Calendar.MONTH, -1); //月份减1
        } else {
            ca.add(Calendar.MONTH, +1); //月份减1
        }
        Date lastMonth = ca.getTime(); //结果
        SimpleDateFormat sf = new SimpleDateFormat(formatType);
        return sf.format(lastMonth);
    }

    public static String getPreOrNextDay(long time, boolean isPre) {
        Calendar ca = Calendar.getInstance();//得到一个Calendar的实例
        ca.setTimeInMillis(time);
        Date now = ca.getTime();
        if (isPre) {
            ca.add(Calendar.DATE, -1);
        } else {
            ca.add(Calendar.DATE, +1);
        }
        Date lastMonth = ca.getTime(); //结果
        SimpleDateFormat sf = new SimpleDateFormat(TYPE_COMMON_FORMAT_DAY);
        return sf.format(lastMonth);
    }

    public static Date getPreOrNextDayToDate(long time, boolean isPre) {
        Calendar ca = Calendar.getInstance();//得到一个Calendar的实例
        ca.setTimeInMillis(time);
        Date now = ca.getTime();
        if (isPre) {
            ca.add(Calendar.DATE, -1);
        } else {
            ca.add(Calendar.DATE, +1);
        }
        Date lastMonth = ca.getTime(); //结果
        return lastMonth;
    }

    public static String[] WEEK_DAYS = {"周日", "周一", "周二", "周三", "周四", "周五", "周六"};

    /**
     * 获取日期是周几
     *
     * @param dt 日期
     * @return 周几的角标
     */
    public static int getWeekOfDate(Date dt) {
        Calendar cal = Calendar.getInstance();
        cal.setTime(dt);
        int w = cal.get(Calendar.DAY_OF_WEEK) - 1;
        if (w < 0)
            w = 0;
        return w;
    }

    /**
     * 获取每月多少天
     *
     * @param formatType 日期的格式化
     * @param date       日期
     * @return 当月总天数
     */
    public static int getDaysByMonth(String formatType, String date) {
        Calendar c = Calendar.getInstance();
        if (date == null) {
            return c.getActualMaximum(Calendar.DAY_OF_MONTH);
        } else {
            SimpleDateFormat sf = new SimpleDateFormat(formatType);
            try {
                Date d = sf.parse(date);
                c.setTime(d);
                return c.getActualMaximum(Calendar.DAY_OF_MONTH);
            } catch (ParseException e) {
                return 30;
            }
        }
    }

    public static String convertStringToDateForCST(String currentTimeType, String time) {
        if (TextUtils.isEmpty(time)) {
            return null;
        }
        try {
            SimpleDateFormat formatter = new SimpleDateFormat("EEE d MMM yyyy", Locale.ENGLISH);
            SimpleDateFormat sdt = new SimpleDateFormat(currentTimeType);
            Date date = sdt.parse(time);
            return formatter.format(date);

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