JSONSessionWriter.java

/*
 * ShootOFF - Software for Laser Dry Fire Training
 * Copyright (C) 2016 phrack
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * 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 General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package com.shootoff.session.io;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.Writer;
import java.util.Optional;

import org.json.simple.JSONArray;
import org.json.simple.JSONObject;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.shootoff.camera.shot.DisplayShot;

public class JSONSessionWriter implements EventVisitor {
	private final Logger logger = LoggerFactory.getLogger(JSONSessionWriter.class);

	private final File sessionFile;
	private final JSONArray cameras = new JSONArray();
	private JSONObject currentCamera;
	private JSONArray currentCameraEvents;

	public JSONSessionWriter(File sessionFile) {
		this.sessionFile = sessionFile;
	}

	@SuppressWarnings("unchecked")
	@Override
	public void visitCamera(String cameraName) {
		currentCamera = new JSONObject();
		currentCamera.put("name", cameraName);

		currentCameraEvents = new JSONArray();
	}

	@SuppressWarnings("unchecked")
	@Override
	public void visitCameraEnd() {
		currentCamera.put("events", currentCameraEvents);
		cameras.add(currentCamera);
	}

	@SuppressWarnings("unchecked")
	@Override
	public void visitShot(long timestamp, DisplayShot shot, boolean isMalfunction, boolean isReload,
			Optional<Integer> targetIndex, Optional<Integer> hitRegionIndex, Optional<String> videoString) {

		final JSONObject event = new JSONObject();
		event.put("type", "shot");
		event.put("timestamp", timestamp);
		event.put("color", shot.getPaintColor().toString());
		event.put("x", shot.getX());
		event.put("y", shot.getY());
		event.put("shotTimestamp", shot.getTimestamp());
		event.put("markerRadius", (int) shot.getMarker().getRadiusX());
		event.put("isMalfunction", isMalfunction);
		event.put("isReload", isReload);

		if (targetIndex.isPresent()) {
			event.put("targetIndex", targetIndex.get());
		} else {
			event.put("targetIndex", -1);
		}

		if (hitRegionIndex.isPresent()) {
			event.put("hitRegionIndex", hitRegionIndex.get());
		} else {
			event.put("hitRegionIndex", -1);
		}

		if (videoString.isPresent()) {
			event.put("videos", videoString.get());
		}

		currentCameraEvents.add(event);
	}

	@SuppressWarnings("unchecked")
	@Override
	public void visitTargetAdd(long timestamp, String targetName) {
		final JSONObject event = new JSONObject();
		event.put("type", "targetAdded");
		event.put("timestamp", timestamp);
		event.put("name", targetName);

		currentCameraEvents.add(event);
	}

	@SuppressWarnings("unchecked")
	@Override
	public void visitTargetRemove(long timestamp, int targetIndex) {
		final JSONObject event = new JSONObject();
		event.put("type", "targetRemoved");
		event.put("timestamp", timestamp);
		event.put("index", targetIndex);

		currentCameraEvents.add(event);
	}

	@SuppressWarnings("unchecked")
	@Override
	public void visitTargetResize(long timestamp, int targetIndex, double newWidth, double newHeight) {
		final JSONObject event = new JSONObject();
		event.put("type", "targetResized");
		event.put("timestamp", timestamp);
		event.put("index", targetIndex);
		event.put("newWidth", newWidth);
		event.put("newHeight", newHeight);

		currentCameraEvents.add(event);
	}

	@SuppressWarnings("unchecked")
	@Override
	public void visitTargetMove(long timestamp, int targetIndex, int newX, int newY) {
		final JSONObject event = new JSONObject();
		event.put("type", "targetMoved");
		event.put("timestamp", timestamp);
		event.put("index", targetIndex);
		event.put("newX", newX);
		event.put("newY", newY);

		currentCameraEvents.add(event);
	}

	@SuppressWarnings("unchecked")
	@Override
	public void visitExerciseFeedMessage(long timestamp, String message) {
		final JSONObject event = new JSONObject();
		event.put("type", "exerciseFeedMessage");
		event.put("timestamp", timestamp);
		event.put("message", message);

		currentCameraEvents.add(event);
	}

	@SuppressWarnings("unchecked")
	@Override
	public void visitEnd() {
		final JSONObject session = new JSONObject();
		session.put("cameras", cameras);

		Writer file = null;

		try {
			file = new OutputStreamWriter(new FileOutputStream(sessionFile), "UTF-8");
			file.write(session.toJSONString());
			file.flush();
		} catch (final IOException e) {
			logger.error("Error writing JSON session", e);
		} finally {
			try {
				if (file != null) file.close();
			} catch (final IOException e) {
				logger.error("Error closing JSON session", e);
			}

		}
	}
}