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DAL-extension-basic

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package com.github.leeonky.dal.extensions.basic.sftp.util;

import com.github.leeonky.dal.extensions.basic.file.util.FileGroup;

import java.io.InputStream;
import java.util.stream.Stream;

public class SftpFileGroup extends FileGroup {
    private final SFtpFile sFtpFile;

    public SftpFileGroup(SFtpFile sFtpFile, String name) {
        super(name);
        this.sFtpFile = sFtpFile;
    }

    @Override
    protected InputStream open(SFtpFile subFile) {
        return subFile.download();
    }

    @Override
    protected SFtpFile createSubFile(String fileName) {
        return sFtpFile.access(fileName).orElseThrow(IllegalStateException::new);
    }

    @Override
    protected Stream listFileName() {
        return sFtpFile.ls().stream().map(SFtpFile::name).filter(n -> n.startsWith(name + "."));
    }
}