package com.ruoyi.web.controller.common;

import java.io.*;
import java.util.ArrayList;
import java.util.Base64;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import javax.lang.model.util.Elements;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.OutputKeys;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;

import com.ruoyi.common.enums.PhotoEnum;
import com.ruoyi.common.enums.RadioEnum;
import com.ruoyi.common.enums.VadioEnum;
import com.smartor.domain.HtmlContentVO;
import org.apache.poi.hwpf.HWPFDocument;
import org.apache.poi.hwpf.converter.PicturesManager;
import org.apache.poi.hwpf.converter.WordToHtmlConverter;
import org.apache.poi.hwpf.usermodel.Picture;
import org.apache.poi.hwpf.usermodel.PictureType;
import org.jsoup.Jsoup;
import org.jsoup.nodes.Element;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.MediaType;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;
import com.ruoyi.common.config.RuoYiConfig;
import com.ruoyi.common.constant.Constants;
import com.ruoyi.common.core.domain.AjaxResult;
import com.ruoyi.common.utils.StringUtils;
import com.ruoyi.common.utils.file.FileUploadUtils;
import com.ruoyi.common.utils.file.FileUtils;
import com.ruoyi.framework.config.ServerConfig;
import org.springframework.web.multipart.commons.CommonsMultipartFile;
import org.w3c.dom.Document;

/**
 * 通用请求处理
 *
 * @author ruoyi
 */
@RestController
@RequestMapping("/common")
public class CommonController {
    private static final Logger log = LoggerFactory.getLogger(CommonController.class);

    @Autowired
    private ServerConfig serverConfig;

    private static final String FILE_DELIMETER = ",";

    /**
     * 通用下载请求
     *
     * @param fileName 文件名称
     * @param delete   是否删除
     */
    @GetMapping("/download")
    public void fileDownload(String fileName, Boolean delete, HttpServletResponse response, HttpServletRequest request) {
        try {
            if (!FileUtils.checkAllowDownload(fileName)) {
                throw new Exception(StringUtils.format("文件名称({})非法，不允许下载。 ", fileName));
            }
            String realFileName = System.currentTimeMillis() + fileName.substring(fileName.indexOf("_") + 1);
            String filePath = RuoYiConfig.getDownloadPath() + fileName;

            response.setContentType(MediaType.APPLICATION_OCTET_STREAM_VALUE);
            FileUtils.setAttachmentResponseHeader(response, realFileName);
            FileUtils.writeBytes(filePath, response.getOutputStream());
            if (delete) {
                FileUtils.deleteFile(filePath);
            }
        } catch (Exception e) {
            log.error("下载文件失败", e);
        }
    }

    /**
     * 分类上传请求
     */
    @PostMapping("/uploadSort")
    public AjaxResult uploadFileSort(MultipartFile file) {
        try {
            // 上传文件路径
            String filePath = RuoYiConfig.getUploadPath();
            String originalFilename = file.getOriginalFilename().split("\\.", 2)[1];
            if (VadioEnum.getDescByCode(originalFilename)) {
                filePath = filePath + "/vadio";
            } else if (RadioEnum.getDescByCode(originalFilename)) {
                filePath = filePath + "/radio";
            } else if (PhotoEnum.getDescByCode(originalFilename)) {
                filePath = filePath + "/photo";
            } else {
                filePath = filePath + "/file";
            }
            // 上传并返回新文件名称
            String fileName = FileUploadUtils.uploadSort(filePath, file);
            String url = serverConfig.getUrl() + fileName;
            AjaxResult ajax = AjaxResult.success();
            ajax.put("url", url);
            ajax.put("fileName", fileName);
            ajax.put("newFileName", FileUtils.getName(fileName));
            ajax.put("originalFilename", file.getOriginalFilename());
            return ajax;
        } catch (Exception e) {
            return AjaxResult.error(e.getMessage());
        }
    }

    /**
     * 上传并转成html请求
     */
    @PostMapping("/uploadShow")
    public AjaxResult uploadFileShow(MultipartFile file) {
        try {
            // 上传文件路径
            String filePath = RuoYiConfig.getUploadPath();
            String originalFilename = file.getOriginalFilename().split("\\.", 2)[1];
            filePath = filePath + "/show/" + file.getOriginalFilename().split("\\.", 2)[0];
            // 上传并返回新文件名称
            String fileName = FileUploadUtils.uploadSort(filePath, file);
            //将word转成html
            convertDocToHtml(filePath + "\\" + file.getOriginalFilename(), filePath + "\\" + file.getOriginalFilename().split("\\.", 2)[0] + ".html");

            String url = serverConfig.getUrl() + fileName.replaceAll("\\.[^.]*$", ".html");
            AjaxResult ajax = AjaxResult.success();
            ajax.put("url", url);
            ajax.put("fileName", fileName);
            ajax.put("newFileName", FileUtils.getName(fileName));
            ajax.put("originalFilename", file.getOriginalFilename());
            return ajax;
        } catch (Exception e) {
            return AjaxResult.error(e.getMessage());
        }
    }

    /**
     * 通用上传请求（单个）
     */
    @PostMapping("/upload")
    public AjaxResult uploadFile(MultipartFile file) {
        try {
            // 上传文件路径
            String filePath = RuoYiConfig.getUploadPath();
            // 上传并返回新文件名称
            String fileName = FileUploadUtils.upload(filePath, file);
            String url = serverConfig.getUrl() + fileName;
            AjaxResult ajax = AjaxResult.success();
            ajax.put("url", url);
            ajax.put("fileName", fileName);
            ajax.put("newFileName", FileUtils.getName(fileName));
            ajax.put("originalFilename", file.getOriginalFilename());
            return ajax;
        } catch (Exception e) {
            return AjaxResult.error(e.getMessage());
        }
    }

    /**
     * 通用上传请求（多个）
     */
    @PostMapping("/uploads")
    public AjaxResult uploadFiles(List<MultipartFile> files) throws Exception {
        try {
            // 上传文件路径
            String filePath = RuoYiConfig.getUploadPath();
            List<String> urls = new ArrayList<String>();
            List<String> fileNames = new ArrayList<String>();
            List<String> newFileNames = new ArrayList<String>();
            List<String> originalFilenames = new ArrayList<String>();
            for (MultipartFile file : files) {
                // 上传并返回新文件名称
                String fileName = FileUploadUtils.upload(filePath, file);
                String url = serverConfig.getUrl() + fileName;
                urls.add(url);
                fileNames.add(fileName);
                newFileNames.add(FileUtils.getName(fileName));
                originalFilenames.add(file.getOriginalFilename());
            }
            AjaxResult ajax = AjaxResult.success();
            ajax.put("urls", StringUtils.join(urls, FILE_DELIMETER));
            ajax.put("fileNames", StringUtils.join(fileNames, FILE_DELIMETER));
            ajax.put("newFileNames", StringUtils.join(newFileNames, FILE_DELIMETER));
            ajax.put("originalFilenames", StringUtils.join(originalFilenames, FILE_DELIMETER));
            return ajax;
        } catch (Exception e) {
            return AjaxResult.error(e.getMessage());
        }
    }

    /**
     * 本地资源通用下载
     */
    @GetMapping("/download/resource")
    public void resourceDownload(String resource, HttpServletRequest request, HttpServletResponse response) throws Exception {
        try {
            if (!FileUtils.checkAllowDownload(resource)) {
                throw new Exception(StringUtils.format("资源文件({})非法，不允许下载。 ", resource));
            }
            // 本地资源路径
            String localPath = RuoYiConfig.getProfile();
            // 数据库资源地址
            String downloadPath = localPath + StringUtils.substringAfter(resource, Constants.RESOURCE_PREFIX);
            // 下载名称
            String downloadName = StringUtils.substringAfterLast(downloadPath, "/");
            response.setContentType(MediaType.APPLICATION_OCTET_STREAM_VALUE);
            FileUtils.setAttachmentResponseHeader(response, downloadName);
            FileUtils.writeBytes(downloadPath, response.getOutputStream());
        } catch (Exception e) {
            log.error("下载文件失败", e);
        }
    }

    /**
     * @param HtmlContentVO
     * @return
     */
    @GetMapping("/common/htmlContent")
    public AjaxResult htmlContent(@RequestBody HtmlContentVO htmlContentVO) {
        // 获取文件的原始名称
        String fileName = htmlContentVO.getFileName();
        // 将文件保存到指定目录
        File outputFile = new File(RuoYiConfig.getUploadPath() + "/show/" + fileName.split("\\.", 2)[0] + fileName);
        try (BufferedWriter writer = new BufferedWriter(new FileWriter(outputFile))) {
            writer.write(htmlContentVO.getContent());

        } catch (IOException e) {
            e.printStackTrace();
        }
        return AjaxResult.success();
    }


    public static void convertDocToHtml(String docFilePath, String outputHtmlFilePath) throws TransformerException, IOException, ParserConfigurationException {

        InputStream inputStream = new FileInputStream(docFilePath);
        HWPFDocument document = new HWPFDocument(inputStream);
        org.w3c.dom.Document htmlDoc = DocumentBuilderFactory.newInstance().newDocumentBuilder().newDocument();
        WordToHtmlConverter wordToHtmlConverter = new WordToHtmlConverter(htmlDoc);

        wordToHtmlConverter.setPicturesManager(new PicturesManager() {
            @Override
            public String savePicture(byte[] content, PictureType pictureType, String suggestedName, float widthInches, float heightInches) {
                String base64 = Base64.getEncoder().encodeToString(content);
                String src = "data:" + pictureType.getMime() + ";base64," + base64;
                return src;
            }
        });
        try {
            wordToHtmlConverter.processDocument(document);
        } catch (Exception e) {
            e.getMessage();
        }
        TransformerFactory tf = TransformerFactory.newInstance();
        Transformer transformer = tf.newTransformer();
        transformer.setOutputProperty(OutputKeys.INDENT, "yes");
        transformer.setOutputProperty(OutputKeys.METHOD, "html");
        transformer.setOutputProperty(OutputKeys.ENCODING, "UTF-8");
        transformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "4");

        DOMSource domSource = new DOMSource(wordToHtmlConverter.getDocument());
        StreamResult streamResult = new StreamResult(new File(outputHtmlFilePath));
        transformer.transform(domSource, streamResult);

        System.out.println("word转html成功");

    }


}