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package com.github.yingzhuo.fastdfs.springboot.domain.upload;

import com.github.yingzhuo.fastdfs.springboot.domain.fdfs.MetaData;

import java.io.InputStream;
import java.util.HashSet;
import java.util.Set;

/**
 * 构造FastFile抽象对象
 *
 * @author wuyf
 */
public abstract class AbstractFastFileBuilder {

    /**
     * 输入流
     */
    protected InputStream inputStream;

    /**
     * 文件大小
     */
    protected long fileSize;

    /**
     * 文件扩展名
     */
    protected String fileExtName;

    /**
     * 文件元数据
     */
    protected Set metaDataSet = new HashSet<>();

    /**
     * 上传文件分组
     */
    protected String groupName;

    public AbstractFastFileBuilder withFile(InputStream inputStream, long fileSize, String fileExtName) {
        this.inputStream = inputStream;
        this.fileSize = fileSize;
        this.fileExtName = fileExtName;
        return this;
    }

    public AbstractFastFileBuilder withMetaData(String name, String value) {
        this.metaDataSet.add(new MetaData(name, value));
        return this;
    }

    public AbstractFastFileBuilder withMetaData(Set metaDataSet) {
        this.metaDataSet.addAll(metaDataSet);
        return this;
    }

    public AbstractFastFileBuilder toGroup(String groupName) {
        this.groupName = groupName;
        return this;
    }

    public abstract T build();

}