/**
 * 请接受你现在的样子
 */
package com.thhy.materials.modules.biz.utils;


import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.*;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

import java.io.InputStream;
import java.text.DecimalFormat;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.List;


public class ExcelUtil {

    private final static String excel2003L = ".xls"; // 2003- 版本的excel
    private final static String excel2007U = ".xlsx"; // 2007+ 版本的excel

    /**
     * Excel导入
     */
    public static List<List<Object>> getUserListByExcel(InputStream in, String fileName) throws Exception {
        List<List<Object>> list = null;
        // 创建Excel工作薄
        Workbook work = getWorkbook(in, fileName);
        if (null == work) {
            throw new Exception("创建Excel工作薄为空！");
        }
        Sheet sheet = null;
        Row row = null;
        Cell cell = null;
        list = new ArrayList<List<Object>>();
        // 遍历Excel中所有的sheet
        //for (int i = 0; i < work.getNumberOfSheets(); i++) {
        sheet = work.getSheetAt(0);
//            if (sheet == null) {
//                continue;4
//            }
        // 遍历当前sheet中的所有行
        // 包含头部，所以要小于等于最后一列数,这里也可以在初始值加上头部行数，以便跳过头部
        for (int j = sheet.getFirstRowNum(); j <= sheet.getLastRowNum(); j++) {
            // 读取一行
            row = sheet.getRow(j);
            // 去掉空行和表头  article.setArticleTypeId(articleTypeId);
            if (row == null) {
                continue;
            }
            // 遍历所有的列
            List<Object> li = new ArrayList<Object>();
            for (int y = row.getFirstCellNum(); y < 19; y++) {
                cell = row.getCell(y);
                //if (cell != null ) {
                if (cell == null) {
                    li.add("");
                } else {
                    li.add(getCellValue(cell));
                }
                //}
            }
            list.add(li);
        }
        // }
        return list;
    }

    /**
     * 描述：根据文件后缀，自适应上传文件的版本
     */
    public static Workbook getWorkbook(InputStream in, String fileName) throws Exception {

        Workbook wb = null;
        String fileType = fileName.substring(fileName.lastIndexOf("."));
        System.out.println("----****------"+fileType);
        if (excel2003L.equals(fileType)) {
            wb = new XSSFWorkbook(in); // 2003-
        } else if (excel2007U.equals(fileType)) {
            wb = new HSSFWorkbook(in); // 2007+
        } else {
            throw new Exception("解析的文件格式有误！");
        }
        return wb;
    }

    /**
     * 描述：对表格中数值进行格式化
     */
    public static Object getCellValue(Cell cell) {
        Object value = null;
        DecimalFormat df = new DecimalFormat("0"); // 格式化字符类型的数字
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy/MM/dd hh:mm:ss"); // 日期格式化
        SimpleDateFormat sdf1 = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); // 日期格式化
        DecimalFormat df2 = new DecimalFormat("0"); // 格式化数字
        if (cell.getCellType() == null) {
            return "";
        } else if (cell.getCellType() == CellType.STRING) {
            value = cell.getRichStringCellValue().getString();
        } else if (cell.getCellType() == CellType.NUMERIC) {
            if ("General".equals(cell.getCellStyle().getDataFormatString())) {
                Double numericCellValue = cell.getNumericCellValue();
                String stringCellValue = numericCellValue.toString();
                String substring = stringCellValue.substring(stringCellValue.indexOf(".") + 1, stringCellValue.length());
                Integer integer = Integer.valueOf(substring);
                if (integer > 0) {
                    value = stringCellValue;
                } else if (numericCellValue.compareTo(1.0) < 0) {
                    value = df.format(cell.getNumericCellValue());
                } else {
                    value = df.format(cell.getNumericCellValue());
                }
            } else if ("m/d/yy".equals(cell.getCellStyle().getDataFormatString())) {
                value = sdf.format(cell.getDateCellValue());
            }else if ("yyyy/m/d".equals(cell.getCellStyle().getDataFormatString())) {
                value = sdf1.format(cell.getDateCellValue());
            } else {
                value = df2.format(cell.getNumericCellValue());
            }
        } else if (cell.getCellType() == CellType.BOOLEAN) {
            value = cell.getBooleanCellValue();
        } else if (cell.getCellType() == CellType.BLANK) {
            value = "";
        }
        return value;
    }

    /**
     * 导入Excel表结束 导出Excel表开始
     *
     * @param sheetName
     *            工作簿名称
     * @param clazz
     *            数据源model类型
     * @param objs
     *            excel标题列以及对应model字段名
     * @param map
     *            标题列行数以及cell字体样式
     */
    /*public static XSSFWorkbook createExcelFile(Class clazz, List objs, Map<Integer, List<ExcelBean>> map,
                                               String sheetName) throws IllegalArgumentException, IllegalAccessException, InvocationTargetException,
            ClassNotFoundException, IntrospectionException {
        // 创建新的Excel工作簿
        XSSFWorkbook workbook = new XSSFWorkbook();
        // 在Excel工作簿中建一工作表，其名为缺省值, 也可以指定Sheet名称
        XSSFSheet sheet = workbook.createSheet(sheetName);
        // 以下为excel的字体样式以及excel的标题与内容的创建，下面会具体分析;
        createTableHeader(sheet, map); //创建标题（头）
        createTableRows(sheet, map, objs, clazz); // 创建内容
        return workbook;
    }

    *//**
     * @param sheet
     *            工作簿
     * @param map
     *            每行每个单元格对应的列头信息
     *//*
    public static final void createTableHeader(XSSFSheet sheet, Map<Integer, List<ExcelBean>> map) {
        for (Map.Entry<Integer, List<ExcelBean>> entry : map.entrySet()) {
            XSSFRow row = sheet.createRow(entry.getKey());
            List<ExcelBean> excels = entry.getValue();
            for (int x = 0; x < excels.size(); x++) {
                XSSFCell cell = row.createCell(x);
                cell.setCellValue(excels.get(x).getHeadTextName());// 设置内容
            }
        }
    }

    public static void createTableRows(XSSFSheet sheet, Map<Integer, List<ExcelBean>> map, List objs, Class clazz)
            throws IllegalArgumentException, IllegalAccessException, InvocationTargetException, IntrospectionException{
        int rowindex = map.size();
        int maxKey = 0;
        List<ExcelBean> ems = new ArrayList<>();
        for (Map.Entry<Integer, List<ExcelBean>> entry : map.entrySet()) {
            if (entry.getKey() > maxKey) {
                maxKey = entry.getKey();
            }
        }
        ems = map.get(maxKey);
        for (Object obj : objs) {
            XSSFRow row = sheet.createRow(rowindex);
            for (int i = 0; i < ems.size(); i++) {
                ExcelBean em = (ExcelBean) ems.get(i);
                // 获得get方法
                PropertyDescriptor pd = new PropertyDescriptor(em.getPropertyName(), clazz);
                Method getMethod = pd.getReadMethod();
                Object rtn = getMethod.invoke(obj);
                String value = "";
                // 如果是日期类型进行转换
                if (rtn != null) {
                    if (rtn instanceof Date) {
                        value = DateUtils.formatDate((Date) rtn, "yyyy-MM-dd");
                    } else {
                        value = rtn.toString();
                    }
                }
                XSSFCell cell = row.createCell(i);
                cell.setCellValue(value);
                cell.setCellType(CellType.STRING);
            }
            rowindex++;
        }
    }*/
}