package com.artfess.file.util;


import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.nio.channels.FileChannel;
import java.nio.channels.WritableByteChannel;
import java.nio.charset.Charset;
import java.util.Arrays;
import java.util.List;

import it.sauronsoftware.jave.Encoder;
import it.sauronsoftware.jave.MultimediaInfo;
import lombok.Data;
import org.apache.commons.fileupload.disk.DiskFileItem;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;

import com.google.common.collect.Lists;
import com.artfess.file.model.FileType;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.multipart.commons.CommonsMultipartFile;

/**
 * 文件处理工具
 *
 * @company 阿特菲斯信息技术有限公司
 * @author heyifan
 * @email heyf@jee-soft.cn
 * @date 2018年9月30日
 */
@Component
public class FileUtils {
    Logger log= LoggerFactory.getLogger(getClass());

    final String REDIS_FILE_PREVIEW_PDF_KEY = "converted-preview-pdf-file";
    final String REDIS_FILE_PREVIEW_IMGS_KEY = "converted-preview-imgs-file";//压缩包内图片文件集合
    @Value("${file.file.dir}")
    String fileDir;

    public String getFileDir() {
		return fileDir;
	}

	@Value("${file.converted.file.charset}")
    String charset;

    @Value("${file.simText}")
    String[] simText;

    @Value("${file.media}")
    String[] media;

    @Value("${file.upload}")
    private String basepath;
    /**
     * 查看文件类型(防止参数中存在.点号或者其他特殊字符，所以先抽取文件名，然后再获取文件类型)
     *
     * @param url
     * @return
     */
    public FileType typeFromUrl(String fileType) {
    	fileType=fileType.substring(fileType.lastIndexOf(".")+1,fileType.length());

        if (listPictureTypes().contains(fileType.toLowerCase())) {
          return FileType.picture;
        }
        if (listArchiveTypes().contains(fileType.toLowerCase())) {
            return FileType.compress;
        }
        if (listOfficeTypes().contains(fileType.toLowerCase())) {
            return FileType.office;
        }
        if (Arrays.asList(simText).contains(fileType.toLowerCase())) {
            return FileType.simText;
        }
        if (Arrays.asList(media).contains(fileType.toLowerCase())) {
            return FileType.media;
        }
        if("pdf".equalsIgnoreCase(fileType)){
            return FileType.pdf;
        }
        return FileType.other;
    }

    /**
     * 从url中剥离出文件名
     * @param url
     * @return
     */
    public String getFileNameFromURL(String url) {
        // 因为url的参数中可能会存在/的情况，所以直接url.lastIndexOf("/")会有问题
        // 所以先从？处将url截断，然后运用url.lastIndexOf("/")获取文件名
        String noQueryUrl = url.substring(0, url.indexOf("?") != -1 ? url.indexOf("?"): url.length());
        String fileName = noQueryUrl.substring(noQueryUrl.lastIndexOf("/") + 1);
        return fileName;
    }

    /**
     * 获取文件后缀
     * @param fileName
     * @return
     */
    public static String getSuffixFromFileName(String fileName) {
        String suffix = fileName.substring(fileName.lastIndexOf("."));
        return suffix;
    }

    /**
     * 从路径中获取
     * @param path
     *      类似这种：C:\Users\yudian-it\Downloads
     * @return
     */
    public String getFileNameFromPath(String path) {
        return path.substring(path.lastIndexOf(File.separator) + 1);
    }

    public List<String> listPictureTypes(){
        List<String> list = Lists.newArrayList();
        list.add("jpg");
        list.add("jpeg");
        list.add("png");
        list.add("gif");
        list.add("bmp");
        list.add("ico");
        list.add("RAW");
        return list;
    }

    public List<String> listArchiveTypes(){
        List<String> list = Lists.newArrayList();
        list.add("rar");
        list.add("zip");
        list.add("jar");
        list.add("7-zip");
        list.add("tar");
        list.add("gzip");
        list.add("7z");
        return list;
    }

    public List<String> listOfficeTypes() {
        List<String> list = Lists.newArrayList();
        list.add("docx");
        list.add("doc");
        list.add("xls");
        list.add("xlsx");
        list.add("ppt");
        list.add("pptx");
        list.add("wps");
        list.add("et");
        return list;
    }

    /**
     * 获取相对路径
     * @param absolutePath
     * @return
     */
    public String getRelativePath(String absolutePath) {
        return absolutePath.substring(fileDir.length());
    }

    /**
     * 判断文件编码格式
     * @param path
     * @return
     */
    public String getFileEncodeUTFGBK(String path){
        String enc = Charset.forName("GBK").name();
        File file = new File(path);
        InputStream in= null;
        try {
            in = new FileInputStream(file);
            byte[] b = new byte[3];
            in.read(b);
            in.close();
            if (b[0] == -17 && b[1] == -69 && b[2] == -65) {
                enc = Charset.forName("UTF-8").name();
            }
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        System.out.println("文件编码格式为:" + enc);
        return enc;
    }

    /**
     * 对转换后的文件进行操作(改变编码方式)
     * @param outFilePath
     */
    public void doActionConvertedFile(String outFilePath) {
        StringBuffer sb = new StringBuffer();
        try (InputStream inputStream = new FileInputStream(outFilePath);
            BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream, charset))){
            String line;
            while(null != (line = reader.readLine())){
                if (line.contains("charset=gb2312")) {
                    line = line.replace("charset=gb2312", "charset=utf-8");
                }
                sb.append(line);
            }
            // 添加sheet控制头
            sb.append("<script src=\"js/jquery-3.0.0.min.js\" type=\"text/javascript\"></script>");
            sb.append("<script src=\"js/excel.header.js\" type=\"text/javascript\"></script>");
            sb.append("<link rel=\"stylesheet\" href=\"http://cdn.static.runoob.com/libs/bootstrap/3.3.7/css/bootstrap.min.css\">");
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        // 重新写入文件
        try(FileOutputStream fos = new FileOutputStream(outFilePath);
            BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(fos))){
            writer.write(sb.toString());
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    /**
     * 获取文件后缀
     * @param url
     * @return
     */
    @SuppressWarnings("unused")
	private String suffixFromUrl(String url) {
        String nonPramStr = url.substring(0, url.indexOf("?") != -1 ? url.indexOf("?") : url.length());
        String fileName = nonPramStr.substring(nonPramStr.lastIndexOf("/") + 1);
        String fileType = fileName.substring(fileName.lastIndexOf(".") + 1);
        return fileType;
    }

    /**
     * 获取视频时间
     */
    public static long getVideoTime(MultipartFile contentFile) throws Exception {
        // 将MultipartFile转换为Encoder所需的File
        CommonsMultipartFile cf= (CommonsMultipartFile)contentFile;
        DiskFileItem fi = (DiskFileItem)cf.getFileItem();
        File f = fi.getStoreLocation();
        // 获取视频时长
        Encoder encoder = new Encoder();
        MultimediaInfo m = encoder.getInfo(f);
        long second = m.getDuration()/1000;
//        int hour = (int) (ls/3600);
//        int minute = (int) (ls%3600)/60;
//        int second = (int) (ls-hour*3600-minute*60);
//        //logger.info("视频时长为：{}时{}分{}秒", hour, minute, second);
//        String time = hour+":"+minute+":"+second;
        return second;

    }


}