/*
 * Catroid: An on-device visual programming system for Android devices
 * Copyright (C) 2010-2016 The Catrobat Team
 * (<http://developer.catrobat.org/credits>)
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * An additional term exception under section 7 of the GNU Affero
 * General Public License, version 3, is available at
 * http://developer.catrobat.org/license_additional_term
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.catrobat.catroid.soundrecorder;

import android.media.MediaRecorder;
import android.net.Uri;
import android.util.Log;

import java.io.File;
import java.io.IOException;

public class SoundRecorder {

	public static final String RECORDING_EXTENSION = ".m4a";
	private MediaRecorder recorder;
	private boolean isRecording;

	public static final String TAG = SoundRecorder.class.getSimpleName();

	private String path;

	public SoundRecorder(String path) {
		this.recorder = new MediaRecorder();
		this.path = path;
	}

	public void start() throws IOException, RuntimeException {
		File soundFile = new File(path);
		if (soundFile.exists()) {
			soundFile.delete();
		}
		File directory = soundFile.getParentFile();
		if (!directory.exists() && !directory.mkdirs()) {
			throw new IOException("Path to file could not be created.");
		}

		try {
			recorder.reset();
			recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
			recorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
			recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AAC);
			recorder.setOutputFile(path);
			recorder.prepare();
			recorder.start();
			isRecording = true;
		} catch (IllegalStateException e) {
			throw e;
		} catch (RuntimeException e) {
			throw e;
		}
	}

	public void stop() throws IOException {
		try {
			recorder.stop();
		} catch (RuntimeException e) {
			Log.d(TAG, "Note that a RuntimeException is intentionally "
					+ "thrown to the application, if no valid audio/video data "
					+ "has been received when stop() is called. This happens if stop() "
					+ "is called immediately after start(). The failure lets the application "
					+ "take action accordingly to clean up the output file "
					+ "(delete the output file, for instance), since the output file "
					+ "is not properly constructed when this happens.");
		}
		recorder.reset();
		recorder.release();
		isRecording = false;
	}

	public Uri getPath() {
		return Uri.fromFile(new File(path));
	}

	public int getMaxAmplitude() {
		return recorder.getMaxAmplitude();
	}

	public boolean isRecording() {
		return isRecording;
	}
}