package com.fd.server.impl;

import com.fd.constant.CommandMsg;
import com.fd.constant.MsgCode;
import com.fd.constant.TypeCode;
import com.fd.entity.FileEntity;
import com.fd.repository.FileRepository;
import com.fd.server.CmdServer;
import com.fd.util.ResponseResult;
import com.fd.server.FileServer;
import com.fd.util.FileUtils;
import lombok.extern.log4j.Log4j2;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import javax.transaction.Transactional;
import java.io.*;
import java.util.Base64;
import java.util.Date;
import java.util.Optional;

/**
 * Created by Owen on 2019/10/25 0025 16:06
 */
@Log4j2
@Service
@Transactional
public class FileServerImpl implements FileServer {

    @Autowired
    private FileRepository fileRepository;

    @Autowired
    private CmdServer cmdServer;

    public ResponseResult uploadBigFile(MultipartFile file, String savePath) {
        if (file.isEmpty() || file.getSize() <= 0) {
            log.info("文件为空");
            return new ResponseResult (50001, MsgCode.E50001);
        }

        // 文件名全名
        String fullFileName = file.getOriginalFilename();

        // 创建目录路径
        FileUtils.createDir(savePath);

        // 拼接唯一文件名
        String fileName = FileUtils.dateStr() + fullFileName;

        // 文件保存路径
        String filePath = savePath + fileName;

        // 写文件到本地
        try {
            FileUtils.bigFileWrite(file.getInputStream(), filePath);
        } catch (IOException e) {
            e.printStackTrace();
        }
        log.info("filePath: {}", filePath);

        // 保存信息到db
        FileEntity entity = new FileEntity();
        entity.setFileName(fileName);
        entity.setFileUrl(filePath);
//        entity.setRecStatus("A");
        entity.setCreateTime(new Date());
        entity.setUpdateTime(new Date());
        entity.setType(TypeCode.FILE_TYPE_MODEL);
        fileRepository.save(entity);

        return new ResponseResult (200, entity);
    }


    /**
     * 特别需求，只能用文件名，不能用时间戳
     */
    public ResponseResult uploadVector(MultipartFile file, String savePath, String directoryName) {
        if (file.isEmpty() || file.getSize() <= 0) {
            log.info("文件为空");
            return new ResponseResult (50001, MsgCode.E50001);
        }

        // 文件名全名
        String fullFileName = file.getOriginalFilename();

        // 创建目录路径
        savePath = savePath + directoryName + File.separator;
        FileUtils.createDir(savePath);

        // 拼接唯一文件名
//        String fileName = FileUtils.dateStr() + fullFileName;

        // 文件保存路径
        String filePath = savePath + fullFileName;

        // 写文件到本地
        try {
//            FileUtils.bigFileWrite(file.getInputStream(), filePath);
            byte[] bytes = file.getBytes();
            String content = Base64.getEncoder().encodeToString(bytes);
//            FileUtils.fileWriter(content, filePath);
            FileUtils.base64ToFileWriter(content, filePath);
        } catch (IOException e) {
            e.printStackTrace();
        }
        log.info("filePath: {}", filePath);

        // 保存信息到db
        FileEntity entity = new FileEntity();
        entity.setFileName(fullFileName);
        entity.setFileUrl(filePath);
//        entity.setRecStatus("A");
        entity.setCreateTime(new Date());
        entity.setUpdateTime(new Date());
        entity.setType(TypeCode.FILE_TYPE_VECTOR);
        fileRepository.save(entity);

        // 修改生成目录的权限
        String cmd = CommandMsg.VECTOR_DIRECTORY_PERMISSION;
        cmd = cmd.replace("@fileName", directoryName);
        log.info("cmd : {}", cmd);
        cmdServer.exeCmd(cmd);

        cmd = CommandMsg.VECTOR_DIRECTORY_VTS;
        cmd = cmd.replace("@fileName", directoryName);
        log.info("cmd change user: {}", cmd);
        cmdServer.exeCmd(cmd);

        return new ResponseResult (200, entity);
    }

    @Override
    public ResponseResult deleteFileById(Long id)  {

        // 删除服务器文件
        Optional<FileEntity> e = fileRepository.findById(id);
        if (!e.isPresent()) {
            return new ResponseResult(50002, MsgCode.E50002);
        }
        FileEntity fileEntity = e.get();
        String fileName = fileEntity.getFileName();
        // 文件
        if (fileName.contains(".")) {
            File file = new File(fileEntity.getFileUrl());
            file.delete();
        } else { // 目录
            FileUtils.delAllFile(fileEntity.getFileUrl());
        }


        // 删除数据库记录
        fileRepository.deleteById(id);

        return new ResponseResult(200, "success");
    }


    public static void main(String[] args) {
        String a = "aaa.bb";
        String b = "aaa";
        System.out.println(a.contains("."));
        System.out.println(b.contains("."));

    }

}