package com.ruoyi.system.service.impl;


import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.ruoyi.system.mapper.UserFileMapper;
import com.ruoyi.system.model.UserFile;
import com.ruoyi.system.service.UserFileService;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.core.io.InputStreamResource;
import org.springframework.stereotype.Service;

import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;

/**
 * <p>
 *  服务实现类
 * </p>
 *
 * @author administrator
 * @since 2026-01-15
 */
@Service
public class UserFileServiceImpl extends ServiceImpl<UserFileMapper, UserFile> implements UserFileService {

    @Value("${file.upload.dirFile}")
    private Path fileLocation;

    @Override

    public InputStreamResource resolveResource(UserFile userFile){
        try {
            var filePath = fileLocation.resolve(userFile.getName() + "." + userFile.getExtension()).normalize();
            if (!Files.exists(filePath)) {
                return null;
            }
            return new InputStreamResource(Files.newInputStream(filePath));

        }catch (Exception e){
            e.printStackTrace();
        }
        return null;

    }
}