package geoinfo.util;


import java.io.IOException;
import java.io.PrintWriter;
import java.net.URLEncoder;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
import java.util.Date;
import java.util.List;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.poi.ss.usermodel.BorderStyle;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.CellStyle;
import org.apache.poi.ss.usermodel.FillPatternType;
import org.apache.poi.ss.usermodel.Font;
import org.apache.poi.ss.usermodel.HorizontalAlignment;
import org.apache.poi.ss.usermodel.IndexedColors;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.VerticalAlignment;
import org.apache.poi.ss.util.CellRangeAddress;
import org.apache.poi.xssf.usermodel.XSSFDataFormat;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

import egovframework.rte.psl.dataaccess.util.EgovMap;


public class ExcelMergeHeaderUtil {


  public static boolean isEmpty(final Object obj) {
    return !isNotEmpty(obj);
  }

  public static boolean isNotEmpty(final Object obj) {
    if(null == obj) return false;
    else {
      if(obj instanceof String) return "".equals(obj) ? false : true;
      else if(obj instanceof List) return !((List<?>)obj).isEmpty();
      else if(obj instanceof Map) return !((Map<?,?>)obj).isEmpty();
//			else if(obj instanceof Object[]) return 0 == Array.getLength(obj) ? false : true;
      else if(obj instanceof Integer) return !(null == obj);
      else if(obj instanceof Long) return !(null == obj);
      else if(obj instanceof LocalDate) return !(null == obj);
      else return false;
    }
  }

  public static String getTimeStampString(final String format) {
    return getTimeStampString(new Date(), format);
  }

  public static String getTimeStampString(final Date date) {
    return getTimeStampString(date, "yyyyMMddHHmmss");
  }

  public static String getTimeStampString(final Date date, final String format){
    java.text.SimpleDateFormat formatter = new java.text.SimpleDateFormat (format, java.util.Locale.KOREA);
    return formatter.format(date);
  }

  public static String getTimeStampString(String date, final String format) {
    try {
      if(null == date || "".equals(date)) return "";

      Date	d	= null;
      date= date.replaceAll("-", "");

      switch(date.length()) {
        case 14: break;
        case 12: date += "00";			break;
        case 10: date += "0000";		break;
        case 8:	 date += "000000";		break;
        case 6:	 date += "01000000";	break;
        case 4:	 date += "0101000000";	break;
        default: return "";
      }

      java.text.SimpleDateFormat tmpFormat = new java.text.SimpleDateFormat("yyyyMMddHHmmss", java.util.Locale.KOREA);

      if("".equals(date)) d = new Date();
      else {
        tmpFormat.setLenient(true);
        d = tmpFormat.parse(date);
      }

      return getTimeStampString(d, format);
    } catch(Exception e) {
      e.printStackTrace();
      return "";
    }
  }

  public static String getFileExtention(final String filename) {
    if(null == filename || "".equals(filename)) return "";

    return -1 < filename.lastIndexOf(".") ? filename.substring(filename.lastIndexOf(".") + 1).toLowerCase() : "";
  }

  public static String generationSaveName() {
    try {
      Thread.sleep(100);
    } catch (InterruptedException e) {
      e.printStackTrace();
    }
    return ExcelMergeHeaderUtil.getTimeStampString("yyyyMMdd_HHmmss_SSS");
  }

  public static void listToExcel(List<EgovMap> list, HttpServletResponse response, String[] headers, String[] headerNames, String[] columnType, String sheetName, String excelFileName) throws IOException {
    if(ExcelMergeHeaderUtil.isNotEmpty(list)) {
      // 메모리에 100개의 행을 유지합니다. 행의 수가 넘으면 디스크에 적습니다.
      XSSFWorkbook wb = new XSSFWorkbook();
      Sheet sheet = wb.createSheet(sheetName);
      Row headerRow = sheet.createRow(0);
      CellStyle cellStyle1 = wb.createCellStyle();		//쉼표들어간 숫자 양식
      CellStyle cellStyle2 = wb.createCellStyle();		//숫자양식
      CellStyle headerStyle = wb.createCellStyle();		//헤더 스타일
      CellStyle borderStyle = wb.createCellStyle();   // 기본 검정 테두리 스타일

      // 기본 검정 테두리 스타일 설정
      borderStyle.setBorderTop(BorderStyle.THIN);
      borderStyle.setBorderBottom(BorderStyle.THIN);
      borderStyle.setBorderLeft(BorderStyle.THIN);
      borderStyle.setBorderRight(BorderStyle.THIN);
      
      // 글꼴 색상 흰색으로 설정
      Font headerFont = wb.createFont();
      headerFont.setColor(IndexedColors.WHITE.getIndex());  // 글씨 색상 흰색
      headerStyle.setFont(headerFont);  // 헤더 스타일에 적용

      XSSFDataFormat format = wb.createDataFormat();
      cellStyle1.setDataFormat(format.getFormat("#,##0"));
      cellStyle2.setDataFormat(format.getFormat("#"));
      headerStyle.setBorderTop(BorderStyle.THIN);
      headerStyle.setBorderBottom(BorderStyle.THIN);
      headerStyle.setBorderLeft(BorderStyle.THIN);
      headerStyle.setBorderRight(BorderStyle.THIN);
      headerStyle.setAlignment(HorizontalAlignment.CENTER);
      headerStyle.setVerticalAlignment(VerticalAlignment.CENTER);
      headerStyle.setFillPattern(FillPatternType.SOLID_FOREGROUND);
      headerStyle.setFillForegroundColor((short)3);
      headerStyle.setFillForegroundColor(IndexedColors.GREY_40_PERCENT.getIndex());

      for(int i=0; i<list.size(); i++) {
    	EgovMap rowData = list.get(i);
        Row row = sheet.createRow(i+1);

        for(int j=0; j<headers.length; j++) {
          Cell cell = row.createCell(j);

	        Object value = rowData.get(headers[j]);
	        // Money 타입
	        if ("Money".equalsIgnoreCase(columnType[j])) {
	            if (value instanceof Number) {
	                cell.setCellValue(((Number) value).doubleValue());
	            } else {
	                cell.setCellValue(0);
	            }
	            cell.setCellStyle(cellStyle1);

	        // Int 타입
	        } else if ("Int".equalsIgnoreCase(columnType[j])) {
	            if (value instanceof Number) {
	                cell.setCellValue(((Number) value).doubleValue());
	            } else {
	                cell.setCellValue(0);
	            }
	            cell.setCellStyle(cellStyle2);

	        // String 타입
	        } else {
	            cell.setCellValue(value == null ? "" : String.valueOf(value));
	        }
            // 검정 테두리 적용
            cell.setCellStyle(borderStyle);
        }
      }

      for(int j=0; j<headerNames.length; j++) {
        Cell cell = headerRow.createCell(j);
        cell.setCellValue(headerNames[j]);
        cell.setCellStyle(headerStyle);
        sheet.autoSizeColumn(j);
        sheet.setColumnWidth(j, (sheet.getColumnWidth(j)) + 1000);
      }
      //엑셀이름 한글깨짐방지
      String outputFileName = new String(excelFileName.getBytes("KSC5601"), "8859_1");

      response.setHeader("Set-Cookie", "fileDownload=true; path=/");
      response.setHeader("Content-Disposition", String.format("attachment; filename=\""+outputFileName+"_"+ExcelMergeHeaderUtil.getTimeStampString("yyyyMMdd_HHmm")+".xlsx\""));

      wb.write(response.getOutputStream());
      wb.close();
    } else {
      createNoDataAlert(response);
    }

  }

  public static void listToExcelMergeHeader(List<EgovMap> list, HttpServletResponse response, String[] headers, String[][] headerNames, int[] headerWidths, String[] columnType, String sheetName, String excelFileName) throws IOException {
    if(ExcelMergeHeaderUtil.isNotEmpty(list)) {
      // 메모리에 100개의 행을 유지합니다. 행의 수가 넘으면 디스크에 적습니다.
      XSSFWorkbook wb = new XSSFWorkbook();
      Sheet sheet = wb.createSheet(sheetName);
      Row headerRow = sheet.createRow(headerNames.length);
      CellStyle cellStyle1 = wb.createCellStyle();		//쉼표들어간 숫자 양식
      CellStyle cellStyle2 = wb.createCellStyle();		//숫자양식
      CellStyle headerStyle = wb.createCellStyle();		//헤더 스타일
      CellStyle borderStyle = wb.createCellStyle();   // 기본 검정 테두리 스타일

      // 기본 검정 테두리 스타일 설정
      borderStyle.setBorderTop(BorderStyle.THIN);
      borderStyle.setBorderBottom(BorderStyle.THIN);
      borderStyle.setBorderLeft(BorderStyle.THIN);
      borderStyle.setBorderRight(BorderStyle.THIN);
      
      // 글꼴 색상 흰색으로 설정
      Font headerFont = wb.createFont();
      headerFont.setColor(IndexedColors.WHITE.getIndex());  // 글씨 색상 흰색
      headerStyle.setFont(headerFont);  // 헤더 스타일에 적용
      
      XSSFDataFormat format = wb.createDataFormat();
      cellStyle1.setDataFormat(format.getFormat("#,##0"));
      cellStyle2.setDataFormat(format.getFormat("#"));
      headerStyle.setBorderTop(BorderStyle.THIN);
      headerStyle.setBorderBottom(BorderStyle.THIN);
      headerStyle.setBorderLeft(BorderStyle.THIN);
      headerStyle.setBorderRight(BorderStyle.THIN);
      headerStyle.setAlignment(HorizontalAlignment.CENTER);
      headerStyle.setVerticalAlignment(VerticalAlignment.CENTER);
      headerStyle.setFillPattern(FillPatternType.SOLID_FOREGROUND);
//      headerStyle.setFillForegroundColor((short)3);
      headerStyle.setFillForegroundColor(IndexedColors.GREY_40_PERCENT.getIndex());

      // 바디 스타일
      CellStyle bodyStyle = wb.createCellStyle();
      bodyStyle.setAlignment(HorizontalAlignment.CENTER);
      // ---------- 헤더구성 ------------------------------------
      Row hRow = null;
      // rows
      int rowCnt = 0;

      // 헤더 셀 병합
      // === 세로 병합 (단일 컬럼) ===
      sheet.addMergedRegion(new CellRangeAddress(0, 1, 0, 0)); // 연번
      sheet.addMergedRegion(new CellRangeAddress(0, 1, 1, 1)); // 사업명
      sheet.addMergedRegion(new CellRangeAddress(0, 1, 2, 2)); // 입력상태
      
      // === 가로 병합 (대분류) ===
      sheet.addMergedRegion(new CellRangeAddress(0, 0, 3, 4)); // 사업내용
      sheet.addMergedRegion(new CellRangeAddress(0, 0, 5, 8)); // 발주기관현황
      sheet.addMergedRegion(new CellRangeAddress(0, 0, 9, 11)); // 건설사현황
		
      // 헤더 정보 구성
      for (int i = 0; i < headerNames.length; i++) {
        hRow = sheet.createRow(rowCnt++);
        for (int j = 0; j < headerNames[i].length; j++) {
          Cell cell = headerRow.createCell(j);
          cell = hRow.createCell(j);
          cell.setCellStyle(headerStyle);
          cell.setCellValue(headerNames[i][j]);
          sheet.setColumnWidth(j, (sheet.getColumnWidth(j)) + 1000);
          sheet.setColumnWidth(j, headerWidths[j]);
        }
      }

      // ---------- 헤더구성 끝------------------------------------

      for (int i = 0; i < list.size(); i++) {
    	    EgovMap rowData = list.get(i);
    	    Row row = sheet.createRow(i + 2);

    	    for (int j = 0; j < headers.length; j++) {
    	        Cell cell = row.createCell(j);

    	        // 특정 컬럼 중앙 정렬 -----참고용------------
//    	        if ("lvl1_rate".equals(headers[j]) ||
//    	            "lvl2_rate".equals(headers[j]) ||
//    	            "lvl3_rate".equals(headers[j]) ||
//    	            "lvl2_organ_up".equals(headers[j]) ||
//    	            "lvl3_organ_up".equals(headers[j])) {
//    	            cell.setCellStyle(bodyStyle);
//    	        } -----참고용------------

    	        Object value = rowData.get(headers[j]);

    	        // Money 타입
    	        if ("Money".equalsIgnoreCase(columnType[j])) {
    	            if (value instanceof Number) {
    	                cell.setCellValue(((Number) value).doubleValue());
    	            } else {
    	                cell.setCellValue(0);
    	            }
    	            cell.setCellStyle(cellStyle1);

    	        // Int 타입
    	        } else if ("Int".equalsIgnoreCase(columnType[j])) {
    	            if (value instanceof Number) {
    	                cell.setCellValue(((Number) value).doubleValue());
    	            } else {
    	                cell.setCellValue(0);
    	            }
    	            cell.setCellStyle(cellStyle2);

    	        // String 타입
    	        } else {
    	            cell.setCellValue(value == null ? "" : String.valueOf(value));
    	        }
                // 검정 테두리 적용
                cell.setCellStyle(borderStyle);
    	    }
    	}

      //엑셀이름 한글깨짐방지
      String outputFileName = new String(excelFileName.getBytes("KSC5601"), "8859_1");

      response.setHeader("Set-Cookie", "fileDownload=true; path=/");
      response.setHeader("Content-Disposition", String.format("attachment; filename=\""+outputFileName+"_"+ExcelMergeHeaderUtil.getTimeStampString("yyyyMMdd_HHmm")+".xlsx\""));

      wb.write(response.getOutputStream());
      wb.close();
    } else {
      createNoDataAlert(response);
    }

  }

  private static void createNoDataAlert(HttpServletResponse response) throws IOException {
    response.setHeader("Content-Type", "text/html; charset=UTF-8");
    PrintWriter		out	= response.getWriter();

    out.write("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\" \"http://www.w3.org/TR/html4/loose.dtd\">");
    out.write("<html lang=\"ko\">");
    out.write("<head>");
    out.write("<script type=\"text/javascript\">");
    out.write("alert('데이터가 없습니다.');");
    out.write("history.back(-1);");
    out.write("</script>");
    out.write("</head>");
    out.write("</html>");

    out.flush();
    out.close();
  }

  public static void setDisposition(String filename, HttpServletRequest request, HttpServletResponse response) throws IOException {
    String browser = getBrowser(request);

    String dispositionPrefix = "attachment; filename=";
    String encodedFilename = null;

    if (browser.equals("MSIE")) {
      encodedFilename = URLEncoder.encode(filename, "UTF-8").replaceAll("\\+", "%20");
    } else if (browser.equals("Trident")) { // IE11 문자열 깨짐 방지
      encodedFilename = URLEncoder.encode(filename, "UTF-8").replaceAll("\\+", "%20");
    } else if (browser.equals("Firefox")) {
      encodedFilename = "\"" + new String(filename.getBytes("UTF-8"), "8859_1") + "\"";
    } else if (browser.equals("Opera")) {
      encodedFilename = "\"" + new String(filename.getBytes("UTF-8"), "8859_1") + "\"";
    } else if (browser.equals("Chrome")) {
      StringBuffer sb = new StringBuffer();
      for (int i = 0; i < filename.length(); i++) {
        char c = filename.charAt(i);
        if(c==','){
          sb.append(URLEncoder.encode("，", "UTF-8"));
        } else if (c > '~') {
          sb.append(URLEncoder.encode("" + c, "UTF-8"));
        } else {
          sb.append(c);
        }
      }
      encodedFilename = sb.toString();
    } else {
      throw new IOException("Not supported browser");
    }

    response.setHeader("Content-Disposition", dispositionPrefix + encodedFilename);

    if ("Opera".equals(browser)) {
      response.setContentType("application/octet-stream;charset=UTF-8");
    }
    if(filename.contains("zip")){
      response.setContentType("application/zip");
    }
  }

  private static String getBrowser(HttpServletRequest request) {
    String header = request.getHeader("User-Agent");
    if (header.indexOf("MSIE") > -1) {
      return "MSIE";
    } else if (header.indexOf("Trident") > -1) { // IE11 문자열 깨짐 방지
      return "Trident";
    } else if (header.indexOf("Chrome") > -1) {
      return "Chrome";
    } else if (header.indexOf("Opera") > -1) {
      return "Opera";
    }
    return "Firefox";
  }

  public static String LocalDateTimeToStringDate(LocalDateTime localDateTime) {
    DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd");
    String formattedDate = localDateTime.toLocalDate().format(formatter);
    return formattedDate;
  }
  
  
  public static void listToExcelMergeHeaderForLoginHistory(List<EgovMap> list, HttpServletResponse response, String[] headers, String[] headerNames, int[] headerWidths, String[] columnType, String sheetName, String excelFileName) throws IOException {
	    if(ExcelMergeHeaderUtil.isNotEmpty(list)) {
	      // 메모리에 100개의 행을 유지합니다. 행의 수가 넘으면 디스크에 적습니다.
	      XSSFWorkbook wb = new XSSFWorkbook();
	      Sheet sheet = wb.createSheet(sheetName);
	      Row headerRow = sheet.createRow(headerNames.length);
	      CellStyle cellStyle1 = wb.createCellStyle();		//쉼표들어간 숫자 양식
	      CellStyle cellStyle2 = wb.createCellStyle();		//숫자양식
	      CellStyle headerStyle = wb.createCellStyle();		//헤더 스타일
	      CellStyle borderStyle = wb.createCellStyle();   // 기본 검정 테두리 스타일

	      // 기본 검정 테두리 스타일 설정
	      borderStyle.setBorderTop(BorderStyle.THIN);
	      borderStyle.setBorderBottom(BorderStyle.THIN);
	      borderStyle.setBorderLeft(BorderStyle.THIN);
	      borderStyle.setBorderRight(BorderStyle.THIN);
	      
	      // 글꼴 색상 흰색으로 설정
	      Font headerFont = wb.createFont();
	      headerFont.setColor(IndexedColors.WHITE.getIndex());  // 글씨 색상 흰색
	      headerStyle.setFont(headerFont);  // 헤더 스타일에 적용
	      
	      XSSFDataFormat format = wb.createDataFormat();
	      cellStyle1.setDataFormat(format.getFormat("#,##0"));
	      cellStyle2.setDataFormat(format.getFormat("#"));
	      headerStyle.setBorderTop(BorderStyle.THIN);
	      headerStyle.setBorderBottom(BorderStyle.THIN);
	      headerStyle.setBorderLeft(BorderStyle.THIN);
	      headerStyle.setBorderRight(BorderStyle.THIN);
	      headerStyle.setAlignment(HorizontalAlignment.CENTER);
	      headerStyle.setVerticalAlignment(VerticalAlignment.CENTER);
	      headerStyle.setFillPattern(FillPatternType.SOLID_FOREGROUND);
//	      headerStyle.setFillForegroundColor((short)3);
	      headerStyle.setFillForegroundColor(IndexedColors.GREY_40_PERCENT.getIndex());

	      // 바디 스타일
	      CellStyle bodyStyle = wb.createCellStyle();
	      bodyStyle.setAlignment(HorizontalAlignment.CENTER);
	      // ---------- 헤더구성 ------------------------------------
	      Row hRow = null;
	      // rows
	      int rowCnt = 0;
			
	      // 헤더 정보 구성
	      hRow = sheet.createRow(rowCnt++);
	      for (int i = 0; i < headerNames.length; i++) {
	          Cell cell = headerRow.createCell(i);
	          cell = hRow.createCell(i);
	          cell.setCellStyle(headerStyle);
	          cell.setCellValue(headerNames[i]);
	          sheet.setColumnWidth(i, (sheet.getColumnWidth(i)) + 1000);
	          sheet.setColumnWidth(i, headerWidths[i]);
	      }

	      // ---------- 헤더구성 끝------------------------------------

	      for (int i = 0; i < list.size(); i++) {
	    	    EgovMap rowData = list.get(i);
	    	    Row row = sheet.createRow(i + 1);

	    	    for (int j = 0; j < headers.length; j++) {
	    	        Cell cell = row.createCell(j);

	    	        Object value = rowData.get(headers[j]);

	    	        // Money 타입
	    	        if ("Money".equalsIgnoreCase(columnType[j])) {
	    	            if (value instanceof Number) {
	    	                cell.setCellValue(((Number) value).doubleValue());
	    	            } else {
	    	                cell.setCellValue(0);
	    	            }
	    	            cell.setCellStyle(cellStyle1);

	    	        // Int 타입
	    	        } else if ("Int".equalsIgnoreCase(columnType[j])) {
	    	            if (value instanceof Number) {
	    	                cell.setCellValue(((Number) value).doubleValue());
	    	            } else {
	    	                cell.setCellValue(0);
	    	            }
	    	            cell.setCellStyle(cellStyle2);

	    	        // String 타입
	    	        } else {
	    	            cell.setCellValue(value == null ? "" : String.valueOf(value));
	    	        }
	                // 검정 테두리 적용
	                cell.setCellStyle(borderStyle);
	    	    }
	    	}

	      //엑셀이름 한글깨짐방지
	      String outputFileName = new String(excelFileName.getBytes("KSC5601"), "8859_1");

	      response.setHeader("Set-Cookie", "fileDownload=true; path=/");
	      response.setHeader("Content-Disposition", String.format("attachment; filename=\""+outputFileName+"_"+ExcelMergeHeaderUtil.getTimeStampString("yyyyMMdd_HHmm")+".xlsx\""));

	      wb.write(response.getOutputStream());
	      wb.close();
	    } else {
	      createNoDataAlert(response);
	    }

	  }

}