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/*
 * Easemob REST APIs
 * Easemob Server REST API Swagger is designated to provide better documentation and thorough interfaces for testing. For more details about server implementation, request rate limitation, etc, please visit [Easemob Server Integration](http://docs.easemob.com/im/100serverintegration/10intro).    **Note:**  `org_ID` is the unique ID of the organization created when you first registered [Easemob console](https://console.easemob.com/).                          `app_name` is the unique app ID created when you new application in [Easemob console](https://console.easemob.com/).            `Authorization token` is required for most API requests as part of requesting header in the format `Bearer ${token}`. You can obtain the token via [/{org_name}/{app_name}/token](https://docs.hyphenate.io/docs/server-overview#section-request-authentication-token).                                             
 *
 * OpenAPI spec version: 1.0.2
 * 
 *
 * NOTE: This class is auto generated by the swagger code generator program.
 * https://github.com/swagger-api/swagger-codegen.git
 * Do not edit the class manually.
 */


package io.swagger.client;

import com.squareup.okhttp.MediaType;
import com.squareup.okhttp.RequestBody;

import java.io.IOException;

import okio.Buffer;
import okio.BufferedSink;
import okio.ForwardingSink;
import okio.Okio;
import okio.Sink;

public class ProgressRequestBody extends RequestBody {

    public interface ProgressRequestListener {
        void onRequestProgress(long bytesWritten, long contentLength, boolean done);
    }

    private final RequestBody requestBody;

    private final ProgressRequestListener progressListener;

    private BufferedSink bufferedSink;

    public ProgressRequestBody(RequestBody requestBody, ProgressRequestListener progressListener) {
        this.requestBody = requestBody;
        this.progressListener = progressListener;
    }

    @Override
    public MediaType contentType() {
        return requestBody.contentType();
    }

    @Override
    public long contentLength() throws IOException {
        return requestBody.contentLength();
    }

    @Override
    public void writeTo(BufferedSink sink) throws IOException {
        if (bufferedSink == null) {
            bufferedSink = Okio.buffer(sink(sink));
        }

        requestBody.writeTo(bufferedSink);
        bufferedSink.flush();

    }

    private Sink sink(Sink sink) {
        return new ForwardingSink(sink) {

            long bytesWritten = 0L;
            long contentLength = 0L;

            @Override
            public void write(Buffer source, long byteCount) throws IOException {
                super.write(source, byteCount);
                if (contentLength == 0) {
                    contentLength = contentLength();
                }

                bytesWritten += byteCount;
                progressListener.onRequestProgress(bytesWritten, contentLength, bytesWritten == contentLength);
            }
        };
    }
}