package com.qxueyou.scc.base.util;

import java.math.BigDecimal;
import java.math.BigInteger;
import java.math.MathContext;
import java.text.DecimalFormat;
import java.util.Random;
import java.util.regex.Pattern;

import org.apache.commons.lang3.StringUtils;
import org.springframework.web.servlet.ModelAndView;

import com.qxueyou.scc.exercise.model.ExerciseItemAnswerU;

public class CommonUtils {
	/** һλСÊý */
	public static final String PARTEN_ONE = "#.#";
	/** ¶þλСÊý */
	public static final String PARTEN_TWO = "#.##";
	
	//µØÇò°ë¾¶
	private static final double EARTH_RADIUS = 6378.137;
	
	/**
	 * ´ð°¸ÏÔʾͼÐÎÑÕÉ« ×Ô¶¨Òå
	 * @return
	 */
	public static String[] getColors(){
		String[] colors = new String[]{"#4572a7","#aa4643","#89a54e","#80699b","#3d96ae","#a56f8f","#9f7961","#6f83a5"};
		
		return colors;
	}
	
	/**
	 * ¿Î³Ì±íÏÔʾͼÐÎÑÕÉ« ×Ô¶¨Òå
	 * @return
	 */
	public static String[] getRGBColors(){
		String[] colors = new String[]{"21,199,165","130,191,173","155,238,222","178,235,202","210,210,174","205,186,117",
				"220,205,166","233,174,160","240,94,104","169,169,169"};
		
		return colors;
	}
	
	/**
	 * »»ËãΪ2λСÊý
	 * @return
	 */
	public static String formatDecimalFormat(Object obj, String parten){
		DecimalFormat decimal = new DecimalFormat(parten);
		return decimal.format(obj);
	}
	
	/**
	 * ɾ³ý×Ö·û×îºóµÄ·ûºÅ
	 * @return
	 */
	public static String removeStrLastComma(String string){
		String str = string;
		if(StringUtils.isBlank(str)){
			return str;
		}
		String lastStr = str.substring(str.length()-1);
		
		if(lastStr.indexOf(',') > -1){
			str = str.substring(0, str.length()-1);
		}
		
		return str;
	}
	
	/**
	 * ת»»´ð°¸Öµ 0,1,2
	 * @param correct
	 * @return
	 */
	public static byte parseInteractCorrectValue(String correct){
		byte value;
		
		if("true".equals(correct)){
			value=ExerciseItemAnswerU.CORRECT_RIGHT;//ÕýÈ·
		}else if("false".equals(correct)){
			value=ExerciseItemAnswerU.CORRECT_ERROR;//´íÎó
		}else{
			value=7;//δ֪
		}
		
		return value;
	}
	
	/**
	 *   // ½øÐмӷ¨ÔËËã
	 * @param d1
	 * @param d2
	 * @return
	 */
	public static double add(double d1, double d2){      
        BigDecimal b1 = new BigDecimal(String.valueOf(d1));
        BigDecimal b2 = new BigDecimal(String.valueOf(d2));
        
        return b1.add(b2).doubleValue();
	}
	
	/**
	 * // ½øÐмõ·¨ÔËËã
	 * @param d1
	 * @param d2
	 * @return
	 */
    public static double subtract(double d1, double d2){   
        BigDecimal b1 = new BigDecimal(String.valueOf(d1));
        BigDecimal b2 = new BigDecimal(String.valueOf(d2));
        
        return b1.subtract(b2).doubleValue();
    }
    
    /**
     * // ½øÐг˷¨ÔËËã
     * @param d1
     * @param d2
     * @return
     */
	public static double multiply(double d1, double d2){        
        BigDecimal b1 = new BigDecimal(String.valueOf(d1));
        BigDecimal b2 = new BigDecimal(String.valueOf(d2));
        
        return b1.multiply(b2).doubleValue();
	}
	
	 /**
     * // ½øÐгý·¨ÔËËã ËÄÉáÎåÈë
     * @param d1
     * @param d2
     * @return
     */
	public static double divide(double d1,double d2,int len) {// ½øÐгý·¨ÔËËã
        BigDecimal b1 = new BigDecimal(String.valueOf(d1));
        BigDecimal b2 = new BigDecimal(String.valueOf(d2));
        
        return b1.divide(b2,len,BigDecimal.ROUND_HALF_UP).doubleValue();
	}
	
	 /**
     * // ½øÐгý·¨ÔËËã ËÄÉáÎåÈë
     * @param d1
     * @param d2
     * @return
     */
	public static double divide(String d1,String d2,int len) {// ½øÐгý·¨ÔËËã
        BigDecimal b1 = new BigDecimal(d1);
        BigDecimal b2 = new BigDecimal(d2);
        
        return b1.divide(b2,len,BigDecimal.ROUND_HALF_UP).doubleValue();
	}
	
	
	 /**
     * // ½øÐгý·¨ÔËËã ËÄÉáÎåÈë
     * @param d1
     * @param d2
     * @return
     */
	public static BigDecimal divide(BigDecimal b1,BigDecimal b2,int len) {// ½øÐгý·¨ÔËËã
        
        return b1.divide(b2, new MathContext(len));
	}
	public CommonUtils() {
		// TODO Auto-generated constructor stub
	}
	/*
	 * 
	 * °´Ö¸¶¨³¤¶È½ØÈ¡Ô´×Ö·û´®£¬ÈôÔ´×Ö·û´®²»´óÓÚÖ¸¶¨³¤¶È£¬ÔòÔ­Ñù·µ»Ø
	 */
	public static String cutString(String res, Integer length, String suffix) {
		if (StringUtils.isEmpty(res)) {
			return "";
		}
		if (res.length() <= length) {
			return res;
		}
		return res.substring(0, length) + (suffix == null ? "" : suffix);
	}
	
	/**
     * Éú³ÉÁ÷Ë®ºÅ £º  module+ʱ¼ä´Á + 5λËæ»úÊý£¬³¤¶È20λ
     */
    public static String generateNo(String module){
    	
    	Random rand = new Random();
    	String random = String.valueOf(rand.nextInt(100000));
		int index = 0;
		while( random.length() < 5 && index < 5 ){
			index++;
			random = "0".concat(random);
		}
		
		return module + System.currentTimeMillis() + random ;
    }
	
	/**
	 * ¼ÆË㵥λÊý×Ö
	 * 
	 * @param number
	 * @return
	 */
	public static String getNumberByUnit(BigInteger number){
		
		if(number == null){
			return "0";
		}
		
		if(number.compareTo(new BigInteger("10000")) < 0){// СÓÚ1Íò
			return String.valueOf(number);
		}
		
		if(number.compareTo(new BigInteger("10000")) >= 0 
				&& number.compareTo(new BigInteger("100000000")) < 0){// ´óÓÚ1Íò СÓÚÒ»ÒÚ    Ç°½ø1λΪ1.2Íò
			
			return Math.ceil(number.doubleValue()/1000)/10 + "Íò";
			
		}
		
		if(number.compareTo(new BigInteger("100000000")) >= 0){// ´óÓÚÒ»ÒÚ    Ç°½ø1λΪ1.2ÒÚ
			
			return Math.ceil(number.doubleValue()/1000000)/10 + "ÒÚ";
		}
		
		return "0";
	}
	
	/**
	 * ¸ñʽ»¯Îı¾
	 * @param str
	 * @return
	 */
	public static String formatText(String str){
        String text = str;
		if (StringUtils.isNotBlank(str)) {
			text = text.replace("\n", "<br/>");
        }
		return text;
	}
	
	//
    private static double rad(double d){
        return d * Math.PI / 180.0;
    }

    //»ñÈ¡Á½¸ö×ø±ê¾àÀë
    public static double GetDistance(double long1, double lat1, double long2, double lat2) {
        double a, b, d, sa2, sb2;
        double latA = rad(lat1);
        double latB = rad(lat2);
        a = latA - latB;
        b = rad(long1 - long2);

        sa2 = Math.sin(a / 2.0);
        sb2 = Math.sin(b / 2.0);
        d = 2   * EARTH_RADIUS
                * Math.asin(Math.sqrt(sa2 * sa2 + Math.cos(latA)
                * Math.cos(latB) * sb2 * sb2));
        return d;
    }
    
    /**
	 * ÒøÐп¨ÑéÖ¤
	 * 
	 * @param cardNo
	 * @return
	 */
	public static boolean isBankCard(String cardNo){
		return Pattern.matches("^\\d{8,27}$", cardNo);
	}
	
	/**
	 * ftl-·µ»Ø´íÎóÐÅÏ¢Ò³Ãæ
	 * @param mv
	 * @param msg
	 * @return
	 */
	public static ModelAndView resultDeletePage(ModelAndView mv,String msg){
		mv =  new ModelAndView("/deletePage");
		mv.addObject("content", msg);
		return mv;
	}
	
	/** µÃµ½classId*/
	public static String getClassId(String classId){
		return StringUtils.isEmpty(classId)?(StringUtils.isEmpty(ClientUtils.getClassId())?StringUtils.EMPTY:ClientUtils.getClassId()):classId;
	}
}