package com.pollex.pam.service.util;


import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Base64;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class FileUtil {

	private static final Logger log = LoggerFactory.getLogger(FileUtil.class);

	public static File base64ToFile(String base64, String fileName, String folderPath) {
		if(base64 == null){
            return new File(folderPath);
        }
        File  dir=new File(folderPath);
        dir.setWritable(true);
        dir.setReadable(true);
        if (!dir.exists() && !dir.isDirectory()) {
                dir.mkdirs();
        }
		return base64ToFile(base64, toPath(fileName, folderPath));
	}
	
	public static File base64ToFile(String base64, String path) {
		if(base64 == null){
            return new File(path);
        }

		BufferedOutputStream bos = null;

        try {
            byte[] bytes = Base64.getDecoder().decode(base64);
            File file=new File(path);
            file.setWritable(true);
            file.setReadable(true);
            bos = new BufferedOutputStream(new FileOutputStream(file));
            bos.write(bytes);


            return file;
        } catch (Exception e) {
        	log.error("upload file base64 to file error",e);
        } finally {
            if (bos != null) {
                try {
                    bos.close();
                } catch (IOException e) {
                	log.error("upload file base64 to file error",e);
                }
            }
        }

        return null;
	}

	public static boolean isFileExisted(String fileName, String folderPath) {
		return new File(toPath(fileName, folderPath)).isFile();
	}
	
	public static String toPath(String fileName, String folderPath) {
		return folderPath + "/" + fileName;
	}
}