/*
 * 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 kcc.com.cmm.util;

import java.io.IOException;
import java.io.Reader;
import java.io.StringWriter;
import java.io.Writer;
import java.security.SecureRandom;
import java.sql.Clob;
import java.sql.SQLException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashMap;
import java.util.regex.Pattern;

import kcc.let.utl.sim.service.EgovFileScrty;

public class StringUtil {

    private static final int HIGHEST_SPECIAL = '>'; // for escaping html code. by hessie; since 2007/10/01.
    private static final int LOWEST_SPECIAL = '\"'; // for escaping html code. by hessie; since 2007/10/01.
    private static final int HIGHEST_BR = '\r'; // for escaping html code. by hessie; since 2007/10/01.
    private static final int LOWEST_BR = '\n'; // for escaping html code. by hessie; since 2007/10/01.
    private static final int HIGHEST_JS_SPECIAL = '\\'; // for escaping js literal code. by hessie; since 2007/10/01
    private static char[][] specialCharactersRepresentation = new char[HIGHEST_SPECIAL + 1][];
    private static char[][] specialCharactersRepresentationWithNbsp = new char[HIGHEST_SPECIAL + 1][];



	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) {
			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;

	}
	
    /**
	 * 휴대폰번호 대시('-') 추가
	 * 대시 유무 상관없음
	 * 유효성 맞지 않을시 변환안됨.
     */
    public String addDash(String str) {
    	String regExp = "(^01[016789]{1}|070)([0-9]{3}|[0-9]{4})([0-9]{4})$";
    	String chgf = "$1-$2-$3";
    	return str.replaceFirst(regExp, chgf);
    }

	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 static boolean isEmpty(String value) {
        return (value == null || value.length() == 0);
    }
	public static boolean isNotEmpty(String value) {
        return !isEmpty(value);
    }
	
    public static String trim(String value) {
        if(value == null) {
            return null;
        }
        return value.trim();
    }

    public static String getOnlyNum(String value) {
        if(value == null) {
            return null;
        }
        return value.replaceAll("[^0-9]","");
    }

    public static String escapeXml(Object o) {
        if (o == null) {
            return null;
        }

        StringWriter writer = new StringWriter();
        try {
            writeXmlText(writer, o.toString(), true);
        } catch (java.io.IOException e) { // this exception cannot be catched.
        	System.out.println("escapeXml IOException Error");
        }

        return writer.toString();
    }
    public static void writeXmlText(Writer writer, String text) throws java.io.IOException {
        writeXmlText(writer, text, true, false, false);
    }

    public static void writeXmlText(Writer writer, String text, boolean escapeXml) throws java.io.IOException {
        writeXmlText(writer, text, escapeXml, false, false);
    }

    public static void writeXmlText(Writer writer, String text, boolean escapeXml, boolean applyBr) throws java.io.IOException {
        writeXmlText(writer, text, escapeXml, applyBr, false);
    }

    public static void writeXmlText(Writer writer, String text, boolean escapeXml, boolean applyBr, boolean escapeNbsp) throws java.io.IOException {
        if (text == null) {
            // do nothing.
        } else if (!escapeXml && !applyBr) {
            writer.write(text);
        } else {
            writeXmlText(writer, text.toCharArray(), text.length(), escapeXml, applyBr, escapeNbsp);
        }
    }

    public static void writeXmlText(Writer writer, char[] buffer, int length, boolean escapeXml, boolean applyBr, boolean escapeNbsp) throws java.io.IOException {
        int highest = HIGHEST_SPECIAL;
        int lowest = LOWEST_SPECIAL;
        int start = 0;
        int i = 0;
        char[][] representation = (escapeNbsp ? specialCharactersRepresentationWithNbsp : specialCharactersRepresentation);

        if (applyBr) {
            lowest = LOWEST_BR;
            if (!escapeXml) {
                highest = HIGHEST_BR;
            }
        } else {
            if (!escapeXml) {
                i = length;
            }
        }

        for (; i < length; i++) {
            char c = buffer[i];
            if (c <= highest && c >= lowest) {
                char[] escaped = representation[c];
                if (escaped != null) {
                    // add unescaped portion
                    if (start < i) {
                        writer.write(buffer, start, i - start);
                    }
                    // add escaped xml
                    writer.write(escaped);
                    start = i + 1;
                }
            }
        }
        // add rest of unescaped portion
        if (start < length) {
            writer.write(buffer, start, length - start);
        }
    }

	public static void main(String args[]) {
		try {
			System.out.print(EgovFileScrty.encryptPassword("1", "kcctest"));
		} catch (Exception e) {
			System.out.println("Main Exception Error");
		}
	}
	
	/**
	 * 파라미터를 String 타입으로 가져옵니다.<br>
	 *  - null일 경우 빈 문자열을 가져옵니다.<br>
	 * Get String(if object is null, return empty string). 
	 * @param Object
	 * @return String
	 */
	public static String getString(Object obj) {
		if (obj == null)
			return "";
		else
			return String.valueOf(obj);
	}
	
	/**
	 * 오늘 날짜를 형식에 맞는 문자열로 가져옵니다.
	 * 
	 * @param format
	 * @return
	 */
	public static String getDateToString(String format) {
		Date date = new Date();
		return getDateToString(date, format);
	}
	
	/**
	 * 날짜 객체를 형식에 맞는 문자열로 가져옵니다.
	 * 
	 * @param date
	 * @param format
	 * @return
	 */
	public static String getDateToString(Date date, String format) {
		SimpleDateFormat sdf = new SimpleDateFormat(format);
		return sdf.format(date);
	}
	
	
	public static String getRandomKey(int len) {
		SecureRandom random = new SecureRandom();
		String tmp1 = Math.abs(random.nextInt()) + "";
		String tmp2 = Math.abs(random.nextInt()) + "";

		//String key = (long) (Math.random() * Math.pow(len, len))+"";
		String key = (tmp1 + tmp2).substring(0, 10);

		if(key.length()!=len) {
	        return getRandomKey(len);
	    }
	    return key;	    
	}
	
	
	public static String getRandomKey(int len, HashMap<String, String> keyMap) {
		
		SecureRandom random = new SecureRandom();
		String tmp1 = Math.abs(random.nextInt()) + "";
		String tmp2 = Math.abs(random.nextInt()) + "";
		
        //String key = (long) (Math.random() * Math.pow(len, len))+"";
		String key = (tmp1 + tmp2).substring(0, 10);

		if(key.length()!=len) {
            return getRandomKey(len, keyMap);
        }
        
        if(keyMap.containsKey(key)) {
            return getRandomKey(len, keyMap);
        }
        keyMap.put(key, key);
        return key;     
    }
	
	//오즈리포트 직인 이미지 처리를 위한 주소 변환 함수
	public static String getUrlString(String url) {
		
		String repUrl = "";

    	if(url.contains("hosts_")) { //운영서버 업무시스템 주소셋팅
    		
    		repUrl = url.replaceAll("hosts_real", "https://adr.copyright.or.kr");
    		//repUrl = url.replaceAll("hosts_real", "http://192.168.39.144");
    		
    	}else{ //개발서버 시스템 주소 셋팅
    			
    		repUrl = url.replaceAll("host_dev", "http://119.193.215.98:8081");
    			
    	}
    	
    	repUrl = repUrl.replaceAll("&url&", "/uss/ion/pwm/getImage.do?atchFileId=");
		
		return repUrl;
	}
}