package com.ruoyi.web.controller.common;

import java.io.*;
import java.util.ArrayList;
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 com.ruoyi.common.enums.PhotoEnum;
import com.ruoyi.common.enums.RadioEnum;
import com.ruoyi.common.enums.VadioEnum;
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.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
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", filePath);
            updatePicture(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);
        }
    }


    private void convertDocToHtml(String docFilePath, String outputHtmlFilePath, String imageDirPath) throws IOException, ParserConfigurationException {
        // Load DOC into HWPFDocument
        InputStream inputStream = new FileInputStream(docFilePath);
        HWPFDocument document = new HWPFDocument(inputStream);
        // Prepare HTML output
        WordToHtmlConverter wordToHtmlConverter = new WordToHtmlConverter(DocumentBuilderFactory.newInstance().newDocumentBuilder().newDocument());
        // Set PicturesManager to handle image saving
        wordToHtmlConverter.setPicturesManager(new PicturesManager() {
            @Override
            public String savePicture(byte[] content, PictureType pictureType, String suggestedName, float widthInches, float heightInches) {
                File imageFile = new File(imageDirPath + "/" + suggestedName);
                try (FileOutputStream fos = new FileOutputStream(imageFile)) {
                    fos.write(content);
                } catch (IOException e) {
                    e.printStackTrace();
                }
                return suggestedName;
            }
        });
        // Convert document to HTML
        wordToHtmlConverter.processDocument(document);
        // Save images
        List<Picture> pics = document.getPicturesTable().getAllPictures();
        if (pics != null) {
            for (Picture pic : pics) {
                try (FileOutputStream fos = new FileOutputStream(imageDirPath + "/" + pic.suggestFullFileName())) {
                    fos.write(pic.getContent());
                }
            }
        }
        // Convert to HTML
        Document htmlDocument = wordToHtmlConverter.getDocument();
        ByteArrayOutputStream outStream = new ByteArrayOutputStream();
        org.apache.xml.serialize.OutputFormat format = new org.apache.xml.serialize.OutputFormat(htmlDocument);
        org.apache.xml.serialize.XMLSerializer serializer = new org.apache.xml.serialize.XMLSerializer(outStream, format);
        serializer.serialize(htmlDocument);
        // Write HTML file
        try (OutputStream outputStream = new FileOutputStream(outputHtmlFilePath)) {
            outputStream.write(outStream.toByteArray());
        }
    }

    private void updatePicture(String htmlFilePath) {
        try {
            // Load HTML file
            File inputFile = new File(htmlFilePath);
            org.jsoup.nodes.Document doc = Jsoup.parse(inputFile, "UTF-8");

            // Select all elements with style attribute and modify their width and height to 90%
            org.jsoup.select.Elements elementsWithStyle = doc.select("[style]");
            for (Element element : elementsWithStyle) {
                String style = element.attr("style");
                String modifiedStyle = modifyStyle(style);
                element.attr("style", modifiedStyle);
            }

            // Save the modified HTML to output file
            try (FileWriter writer = new FileWriter(htmlFilePath)) {
                writer.write(doc.outerHtml());
            }

            System.out.println("Modification completed successfully.");
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    private String modifyStyle(String style) {
        // Define patterns for width and height
        Pattern widthPattern = Pattern.compile("width\\s*:\\s*[^;]+");
        Pattern heightPattern = Pattern.compile("height\\s*:\\s*[^;]+");

        // Replace width and height with 90%
        Matcher widthMatcher = widthPattern.matcher(style);
        style = widthMatcher.replaceAll("width: 90%");

        Matcher heightMatcher = heightPattern.matcher(style);
        style = heightMatcher.replaceAll("height: 90%");

        return style;
    }
}