package com.supermap.dataservice.util;

import org.apache.poi.POIXMLDocument;
import org.apache.poi.openxml4j.opc.OPCPackage;
import org.apache.poi.xwpf.usermodel.*;

import java.io.ByteArrayInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;

public class WordByModelNew {

    /**
     * 根据指定的参数值、模板，生成 word 文档
     * @param param 需要替换的变量
     * @param template 模板路径
     * @param fileDest 产品路径
     */
    public static void generateWord(Map<String, Object> param, String template, String fileDest) {
        CustomXWPFDocument doc = null;
        try {
            OPCPackage pack = POIXMLDocument.openPackage(template);
            doc = new CustomXWPFDocument(pack);
            if (param != null && param.size() > 0) {

                //处理段落
                List<XWPFParagraph> paragraphList = doc.getParagraphs();
                processParagraphs(paragraphList, param, doc);

                //处理表格
                Iterator<XWPFTable> it = doc.getTablesIterator();
                while (it.hasNext()) {
                    XWPFTable table = it.next();
                    List<XWPFTableRow> rows = table.getRows();
                    for (XWPFTableRow row : rows) {
                        List<XWPFTableCell> cells = row.getTableCells();
                        for (XWPFTableCell cell : cells) {
                            List<XWPFParagraph> paragraphListTable =  cell.getParagraphs();
                            processParagraphs(paragraphListTable, param, doc);
                        }
                    }
                }
            }
            FileOutputStream fopts = null;
            try {
                fopts = new FileOutputStream(fileDest);
                doc.write(fopts);
                pack.close();
            } catch (IOException e) {
                e.printStackTrace();
            } finally {
                closeStream(fopts);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public static void generateWord(Map<String, Object> param, String template) {
        CustomXWPFDocument doc = null;
        try {
            OPCPackage pack = POIXMLDocument.openPackage(template);
            doc = new CustomXWPFDocument(pack);
            if (param != null && param.size() > 0) {

                //处理段落
                List<XWPFParagraph> paragraphList = doc.getParagraphs();
                processParagraphs(paragraphList, param, doc);

                //处理表格
                Iterator<XWPFTable> it = doc.getTablesIterator();
                while (it.hasNext()) {
                    XWPFTable table = it.next();
                    List<XWPFTableRow> rows = table.getRows();
                    for (XWPFTableRow row : rows) {
                        List<XWPFTableCell> cells = row.getTableCells();
                        for (XWPFTableCell cell : cells) {
                            List<XWPFParagraph> paragraphListTable =  cell.getParagraphs();
                            processParagraphs(paragraphListTable, param, doc);
                        }
                    }
                }
            }
            FileOutputStream fopts = null;
            try {
                fopts = new FileOutputStream(template);
                doc.write(fopts);
                pack.close();
            } catch (IOException e) {
                e.printStackTrace();
            } finally {
                closeStream(fopts);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public static void closeStream(FileOutputStream fopts) {
        try {
            fopts.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    /**
     * 处理段落
     * @param paragraphList
     */
    public static void processParagraphs(List<XWPFParagraph> paragraphList, Map<String, Object> param, CustomXWPFDocument doc){
        if(paragraphList != null && paragraphList.size() > 0){
            for(XWPFParagraph paragraph:paragraphList){
                List<XWPFRun> runs = paragraph.getRuns();
                for (XWPFRun run : runs) {
                    String text = run.getText(0);
                    if(text != null){
                        boolean isSetText = false;
                        for (Entry<String, Object> entry : param.entrySet()) {
                            String key = entry.getKey();
                            if(text.indexOf(key) != -1){
                                isSetText = true;
                                Object value = entry.getValue();
                                if (value instanceof String) {//文本替换
                                    text = text.replace(key, value.toString());
                                } else if(value instanceof  Number){
                                    text = text.replace(key, value.toString());
                                } else if (value instanceof Map) {//图片替换
                                    text = text.replace(key, "");
                                    Map pic = (Map)value;
                                    int width = Integer.parseInt(pic.get("width").toString());
                                    int height = Integer.parseInt(pic.get("height").toString());
                                    int picType = getPictureType(pic.get("type").toString());
                                    byte[] byteArray = (byte[]) pic.get("content");
                                    ByteArrayInputStream byteInputStream = new ByteArrayInputStream(byteArray);
                                    try {
                                        int ind = doc.addPicture(byteInputStream,picType);
                                        doc.createPicture(ind, width , height,paragraph);
                                    } catch (Exception e) {
                                        e.printStackTrace();
                                    }
                                }
                            }
                        }
                        if(isSetText){
                            run.setText(text,0);
                        }
                    }
                }
            }
        }
    }
    /**
     * 根据图片类型，取得对应的图片类型代码
     * @param picType
     * @return int
     */
    private static int getPictureType(String picType){
        int res = CustomXWPFDocument.PICTURE_TYPE_PICT;
        if(picType != null){
            if(picType.equalsIgnoreCase("png")){
                res = CustomXWPFDocument.PICTURE_TYPE_PNG;
            }else if(picType.equalsIgnoreCase("dib")){
                res = CustomXWPFDocument.PICTURE_TYPE_DIB;
            }else if(picType.equalsIgnoreCase("emf")){
                res = CustomXWPFDocument.PICTURE_TYPE_EMF;
            }else if(picType.equalsIgnoreCase("jpg") || picType.equalsIgnoreCase("jpeg")){
                res = CustomXWPFDocument.PICTURE_TYPE_JPEG;
            }else if(picType.equalsIgnoreCase("wmf")){
                res = CustomXWPFDocument.PICTURE_TYPE_WMF;
            }
        }
        return res;
    }
    /**
     * 将输入流中的数据写入字节数组
     * @param in
     * @return
     */
    public static byte[] inputStream2ByteArray(InputStream in,boolean isClose){
        byte[] byteArray = null;
        try {
            int total = in.available();
            byteArray = new byte[total];
            in.read(byteArray);
        } catch (IOException e) {
            e.printStackTrace();
        }finally{
            if(isClose){
                try {
                    in.close();
                } catch (Exception e2) {
                    System.out.println("关闭流失败");
                }
            }
        }
        return byteArray;
    }

}