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package com.doumee.lib_coremodel.http.interceptor;
 
import java.io.IOException;
 
 
import okhttp3.MediaType;
import okhttp3.ResponseBody;
import okio.Buffer;
import okio.BufferedSource;
import okio.ForwardingSource;
import okio.Okio;
import okio.Source;
 
/**
 * Created by goldze on 2017/5/11.
 */
 
public class ProgressResponseBody extends ResponseBody {
    private ResponseBody responseBody;
 
    private BufferedSource bufferedSource;
    private String tag;
 
    public ProgressResponseBody(ResponseBody responseBody) {
        this.responseBody = responseBody;
    }
 
    public ProgressResponseBody(ResponseBody responseBody, String tag) {
        this.responseBody = responseBody;
        this.tag = tag;
    }
 
    @Override
    public MediaType contentType() {
        return responseBody.contentType();
    }
 
    @Override
    public long contentLength() {
        return responseBody.contentLength();
    }
 
    @Override
    public BufferedSource source() {
        if (bufferedSource == null) {
            bufferedSource = Okio.buffer(source(responseBody.source()));
        }
        return bufferedSource;
    }
 
    private Source source(Source source) {
        return new ForwardingSource(source) {
            long bytesReaded = 0;
 
            @Override
            public long read(Buffer sink, long byteCount) throws IOException {
                long bytesRead = super.read(sink, byteCount);
                bytesReaded += bytesRead == -1 ? 0 : bytesRead;
                //使用RxBus的方式，实时发送当前已读取(上传/下载)的字节数据
                //TODO 实时发送当前已读取(上传/下载)的字节数据
                //RxBus.getDefault().post(new DownLoadStateBean(contentLength(), bytesReaded, tag));
                return bytesRead;
            }
        };
    }
}