/*
 * 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.pocketmusic.note.trackgrid;

import android.util.SparseArray;

import org.catrobat.catroid.pocketmusic.note.NoteEvent;
import org.catrobat.catroid.pocketmusic.note.Track;

import java.util.List;

public final class TrackGridToTrackConverter {

	private TrackGridToTrackConverter() {
	}

	public static Track convertTrackGridToTrack(TrackGrid trackGrid, int beatsPerMinute) {

		Track track = new Track(trackGrid.getKey(), trackGrid.getInstrument());

		for (GridRow gridRow : trackGrid.getGridRows()) {
			SparseArray<List<GridRowPosition>> positionsSparseArray = gridRow.getGridRowPositions();
			for (int i = 0; i < positionsSparseArray.size(); i++) {
				int key = positionsSparseArray.keyAt(i);
				List<GridRowPosition> positionsList = positionsSparseArray.get(key);

				for (GridRowPosition position : positionsList) {

					long startTicsInTrack = position.getStartTicksInTrack();
					long noteLength = position.getNoteLength().toTicks(beatsPerMinute);

					NoteEvent noteOnEvent = new NoteEvent(gridRow.getNoteName(), true);
					track.addNoteEvent(startTicsInTrack, noteOnEvent);

					NoteEvent noteOffEvent = new NoteEvent(gridRow.getNoteName(), false);
					track.addNoteEvent(startTicsInTrack + noteLength, noteOffEvent);
				}
			}
		}

		return track;
	}
}