ReactorScriptManager.java

/*
 * This file is part of the OdinMS Maple Story Server Copyright (C) 2008 ~ 2010
 * Patrick Huy <patrick.huy@frz.cc> Matthias Butz <matze@odinms.de> Jan
 * Christian Meyer <vimes@odinms.de>
 * 
 * This program is free software: you can redistribute it and/or modify it under
 * the terms of the GNU Affero General Public License version 3 as published by
 * the Free Software Foundation. You may not use, modify or distribute this
 * program under any other version of the GNU Affero General Public License.
 * 
 * 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 javastory.scripting;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.List;
import java.util.Map;

import javastory.channel.ChannelClient;
import javastory.channel.maps.Reactor;
import javastory.db.Database;
import javastory.game.data.ReactorDropEntry;

import javax.script.Invocable;
import javax.script.ScriptEngine;

import com.google.common.collect.Lists;
import com.google.common.collect.Maps;

public final class ReactorScriptManager extends AbstractScriptManager {

	private static final ReactorScriptManager instance = new ReactorScriptManager();
	private final Map<Integer, List<ReactorDropEntry>> drops = Maps.newHashMap();

	public static ReactorScriptManager getInstance() {
		return instance;
	}

	public final void act(final ChannelClient c, final Reactor reactor) {
		try {
			final Invocable iv = this.getInvocable("reactor/" + reactor.getReactorId() + ".js", c);
			final ScriptEngine scriptengine = (ScriptEngine) iv;
			if (iv == null) {
				return;
			}
			final ReactorActionManager rm = new ReactorActionManager(c, reactor);

			scriptengine.put("rm", rm);
			final ReactorScript rs = iv.getInterface(ReactorScript.class);
			rs.act();
		} catch (final Exception e) {
			System.err.println("Error executing reactor script." + e);
		}
	}

	public final List<ReactorDropEntry> getDrops(final int rid) {
		List<ReactorDropEntry> ret = this.drops.get(rid);
		if (ret != null) {
			return ret;
		}
		ret = Lists.newLinkedList();

		PreparedStatement ps = null;
		ResultSet rs = null;

		try {
			final Connection con = Database.getConnection();
			ps = con.prepareStatement("SELECT * FROM reactordrops WHERE reactorid = ?");
			ps.setInt(1, rid);
			rs = ps.executeQuery();

			while (rs.next()) {
				ret.add(new ReactorDropEntry(rs.getInt("itemid"), rs.getInt("chance"), rs.getInt("questid")));
			}
			rs.close();
			ps.close();
		} catch (final SQLException e) {
			System.err.println("Could not retrieve drops for reactor " + rid + e);
			return ret;
		} finally {
			try {
				if (rs != null) {
					rs.close();
				}
				if (ps != null) {
					ps.close();
				}
			} catch (final SQLException ignore) {
				return ret;
			}
		}
		this.drops.put(rid, ret);
		return ret;
	}

	public final void clearDrops() {
		this.drops.clear();
	}
}