/*
 * Copyright 2008-2009 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package egovframework.com.cmm.util;

import java.io.IOException;
import java.io.Reader;
import java.sql.Clob;
import java.sql.SQLException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.regex.Pattern;

import org.springframework.web.servlet.mvc.support.RedirectAttributes;

public class StringUtil {

	public final static char[] byteCodes;

	static {
		byteCodes = new char[] { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };
	}

	public static String bytesToOrgString(byte[] bytes) {
		int len = bytes.length;
		char[] chars = new char[len * 2];

		for (int i = 0; i < len; ++i) {
			chars[i * 2] = byteCodes[(bytes[i] & 0XF0) >> 4];
			chars[i * 2 + 1] = byteCodes[(bytes[i] & 0X0F)];
		}
		return new String(chars);
	}

	/**
	 * 글자 특정 사이즈로 잘라내기
	 *
	 * @param str
	 * @param size
	 * @return String
	 */
	public String cutString(String str, int size) {
		String returnStr = null;
		if (str.length() > size) {
			returnStr = str.substring(0, size) + "...";
		}
		else {
			returnStr = str;
		}
		return returnStr;
	}

	/**
	 * 글자 특정 사이즈로 잘라내기
	 *
	 * @param str
	 * @param size
	 * @param tail
	 * @return String
	 */
	public String cutString(String str, int size, boolean tail) {
		String returnStr = null;
		String tails = "";

		if (tail == true) {
			tails = "...";
		}

		if (str.length() > size) {
			returnStr = str.substring(0, size) + tails;
		}
		else {
			returnStr = str;
		}
		return returnStr;
	}
	
	/**
	 * 글자 특정 사이즈로 <br/> 분이기
	 *
	 * @param str
	 * @param size
	 * @return String
	 */
	public String brString(String str, int size) {
		String returnStr = "";
		int j = 0;
		for(int i = 0; i < str.length(); i++)
		{
			if(j >= size)
			{
				returnStr += "<br/>";
				j = 0;
			}
			returnStr += str.charAt(i);
			j++;
		}
		return returnStr;
	}

	/**
	 * \r\n을 <br/> 태그로 변환처리
	 *
	 * @param str
	 * @return String
	 */
	public String nl2br(String str) {
		String returnStr = null;
		returnStr = str.replaceAll("\r\n", "<br/>");
		return returnStr;
	}
	
	/**
	 * \r\n을  삭제
	 *
	 * @param str
	 * @return String
	 */
	public String nl2Null(String str) {
		String returnStr = null;
		returnStr = str.replaceAll("\r\n", "");
		return returnStr;
	}
	
	/**
	 * \n을 <br/> 태그로 변환처리
	 *
	 * @param str
	 * @return String
	 */
	public String nl2br2(String str) {
		String returnStr = null;
		returnStr = str.replaceAll("\n", "<br/>");
		return returnStr;
	}
	
	/**
	 * 특수문자를 변환합니다
	 *
	 * @param str
	 * @return String
	 */
	public String middot(String str) {
		str = str.replaceAll("&middot;", "·");
		str = str.replaceAll("&ldquo;", "“");
		str = str.replaceAll("&rdquo;", "”");
		str = str.replaceAll("&rarr;", "→");

		return str;
	}	

	/**
	 * html 태그를 제거합니다
	 *
	 * @param str
	 * @return String
	 */
	public static String stripTag(String str) {
		str = str.replaceAll("\\<.*?\\>", "");
		str = str.replaceAll("&nbsp;", "");
		str = str.replaceAll("<span>","");

		return str;
	}
	
	/**
	 * clob 스트링 출력
	 *
	 * @param str
	 * @param size
	 * @return String
	 * @throws IOException 
	 */
	public String getClob(Clob str) throws IOException {
		try {
			
			Reader reader = str.getCharacterStream();
			
			StringBuffer out = new StringBuffer();  
		    char[] buff = new char[1024];  
		    int nchars = 0;  
		  
		    // 스트링 버퍼에 append 시킨후  
		    while ((nchars = reader.read(buff)) > 0) {  
		        out.append(buff, 0, nchars);  
		    }  
		  			
			return out.toString();
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			System.out.println("clob에러");
			return "clob에러";
		}
		
	}
	
	/**
	 * 글자 널값이면 대체하기
	 *
	 * @param str
	 * @param size
	 * @return String
	 */
	public String nvl(String str, String str_r) {
		String returnStr = str;
		if (str == null) {
			if (str_r == null) {
				str_r = "";
			}
			returnStr = str_r;
		} else if (str.length() == 0) {
			if (str_r == null) {
				str_r = "";
			}
			returnStr = str_r;
		}
		
		return returnStr;
	}
	
	/**
	 * https 검색
	 *
	 * @param str
	 * @param size
	 * @return String
	 */
	public boolean httpsFind(String str) {
		
		if(str.matches("https://.*"))
			return true;
		
		return false;
			
	}
	
	public boolean checkReg(String reg, String str) {
		return Pattern.matches(reg, str);
	}
	
	public static boolean checkRegKor(String str) {
		return Pattern.matches("[가-힣]+", str);
	}
	
	public boolean checkRegNum(String str) {
		return Pattern.matches("[0-9]+", str);
	}
	
	public boolean checkRegEng(String str) {
		return Pattern.matches("[a-zA-z]+", str);
	}
	public boolean checkRegEngUp(String str) {
		return Pattern.matches("[A-z]+", str);
	}
	public boolean checkRegEngLo(String str) {
		return Pattern.matches("[a-z]+", str);
	}
	
	public static boolean checkRegKorEngNum(String str) {
		return Pattern.matches("[가-힣A-za-z0-9]+", str);
	}
	
	/**
	 * 새 우편번호 변환
	 */
	public String getPost(int area, int num) {
		String[][] newPosts = {
				{""}
				,{"05050","11787","13636","26475","25517","07988","05048"}
				,{"14041","14442","10449","14067","16704","21313"}
				,{"46700","44248","51708","52628"}
				,{"32840","32840","28684","31158","32839"}
				,{"62278","55316","57987","58457"}
				,{"41504","36709","37653"}
		};
		return newPosts[area][num];
	}
	
	public String nl2br() {
		String returnStr = null;
		return returnStr;
	}
	
	
	public final boolean unscriptAlert(String data, RedirectAttributes redirectAttributes ) {
		if (data == null || data.trim().equals("")) {
			return false;
		}

		String ret = data;
		if( ret.contains("<(S|s)(C|c)(R|r)(I|i)(P|p)(T|t)") ||
			ret.contains("</(S|s)(C|c)(R|r)(I|i)(P|p)(T|t)") ||
			ret.contains("(O|o)(B|b)(J|j)(E|e)(C|c)(T|t)") ||
			ret.contains("</(O|o)(B|b)(J|j)(E|e)(C|c)(T|t)") ||
			ret.contains("alert") ||
			ret.contains("script") ||
			ret.contains("update") ||
			ret.contains("delete") ||
			ret.contains("!") ||
			ret.contains("&lt;") ||
			ret.contains(">") ||
			ret.contains("<") ||
			ret.contains("=") ){
			return true;
		}
		
		return false;
	}
	
	
	// 오늘 날짜
    public static String getTodayDate() throws Exception {

		Date toDay = new Date();    
    	SimpleDateFormat date = new SimpleDateFormat("yyyy-MM-dd");    
    	String rtnDay = date.format(toDay);    
    	
    	return rtnDay;
    }
	
	// 한달 전 날짜
    public static String getBefore1MonthDate() throws Exception {
    	Calendar mon = Calendar.getInstance();    
    	mon.add(Calendar.MONTH , -1);    
    	String beforeMonthDay = new java.text.SimpleDateFormat("yyyy-MM-dd").format(mon.getTime());    
   	
    	return beforeMonthDay;
    }
    
    
}