android/app/src/main/java/io/v/x/media_sharing/SendMediaTask.java

// Copyright 2015 The Vanadium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package io.v.x.media_sharing;

import android.app.Activity;
import android.net.Uri;
import android.os.AsyncTask;
import android.util.Log;
import android.widget.Toast;

import org.apache.commons.io.IOUtils;

import java.io.IOException;
import java.io.InputStream;

import io.v.v23.OptionDefs;
import io.v.v23.Options;
import io.v.v23.context.VContext;
import io.v.v23.vdl.TypedClientStream;
import io.v.v23.verror.VException;

/**
 * Background task to stream media without blocking the UI thread.
 */
public class SendMediaTask extends AsyncTask<Void, Void, Void> {
    private static final String TAG = "SendMediaTask";

    Activity activity;
    VContext vContext;
    String targetName;
    Uri uri;
    String mimeType;

    public SendMediaTask(Activity activity, VContext vContext, String targetName, Uri uri, String mimeType) {
        this.activity = activity;
        this.vContext = vContext;
        this.targetName = targetName;
        this.uri = uri;
        this.mimeType = mimeType;
    }

    @Override
    protected Void doInBackground(Void... params) {
        try {
            InputStream is = activity.getContentResolver().openInputStream(uri);

            MediaSharingClient client = MediaSharingClientFactory.getMediaSharingClient(targetName);
            
            // TODO(bprosnitz) Remove this option when possible. It is allows the app to connect
            // without having the proper blessings.
            Options opts = new Options();
            opts.set(OptionDefs.SKIP_SERVER_ENDPOINT_AUTHORIZATION, true);

            String mimeType = activity.getIntent().getType();
            TypedClientStream<byte[], Void, Void> stream = client.displayBytes(vContext, mimeType, opts);

            ClientByteOutputStream os = new ClientByteOutputStream(stream);
            IOUtils.copy(is, os);
            stream.finish();

            Log.i(TAG, activity.getString(R.string.share_messsage_success));
            activity.runOnUiThread(new Runnable() {
                @Override
                public void run() {
                    Toast.makeText(activity, R.string.share_messsage_success, Toast.LENGTH_LONG).show();
                }
            });
            return null;
        } catch (IOException|VException e) {
            final String errorMessage = activity.getString(R.string.share_messsage_error) + ": " + e.toString();
            Log.e(TAG, errorMessage);

            activity.runOnUiThread(new Runnable() {
                @Override
                public void run() {
                    Toast.makeText(activity, errorMessage, Toast.LENGTH_LONG).show();
                }
            });

            throw new RuntimeException(e);
        }
    }
}