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package com.ksyun.ks3.service.request;

import com.ksyun.ks3.dto.ObjectMetadata;
import com.ksyun.ks3.http.Request;

import java.io.File;
import java.io.InputStream;

import static com.ksyun.ks3.exception.client.ClientIllegalArgumentExceptionGenerator.between;
import static com.ksyun.ks3.exception.client.ClientIllegalArgumentExceptionGenerator.notNull;

/**
 * @author lijunwei[[email protected]]  
 *
 * @date 2014年10月22日 上午10:28:06
 *
 * @description 上传文件的请求
 * 
 * 提供通过文件来上传，请使用AppendbjectRequest(String bucketname, String key, File file)这个构造函数
 * 

 * 提供通过流来上传，请使用AppendbjectRequest(String bucketname, String key,InputStream inputStream, ObjectMetadata metadata)这个构造函数，使用时请尽量在metadata中提供content-length,否则有可能导致jvm内存溢出。可以再metadata中指定contentMD5
 * 
 **/
public class AppendObjectRequest extends PutObjectRequest {

    private Long position;

    public AppendObjectRequest(String bucketname, String key, File file) {
        super(bucketname, key, file);
    }

    public AppendObjectRequest(String bucketname, String key, InputStream inputStream, ObjectMetadata metadata) {
        super(bucketname, key, inputStream, metadata);
    }

    public Long getPosition() {
        return position;
    }

    public void setPosition(Long position) {
        this.position = position;
    }

    @Override
    public void validateParams() throws IllegalArgumentException {
        super.validateParams();
        if (this.position == null)
            throw notNull("position");
        if (this.position < 0 || this.position > 5368709120L) {
            throw between("position", String.valueOf(this.position), "0", "5368709120L");
        }
    }

    @Override
    public void buildRequest(Request request) {
        request.addQueryParam("append", "");
        request.addQueryParam("position", String.valueOf(this.position));
        super.buildRequest(request);
    }
}