/*
 * Copyright (c) 2018, Adam <Adam@sigterm.info>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this
 *    list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package net.runelite.client.game;

import java.io.IOException;
import java.util.Collections;
import java.util.Map;
import java.util.concurrent.ScheduledExecutorService;
import javax.annotation.Nullable;
import javax.inject.Inject;
import javax.inject.Singleton;
import lombok.extern.slf4j.Slf4j;

@Singleton
@Slf4j
public class NPCManager
{
	private final NpcInfoClient npcInfoClient;
	private Map<Integer, NpcInfo> npcMap = Collections.emptyMap();

	@Inject
	private NPCManager(NpcInfoClient npcInfoClient, ScheduledExecutorService scheduledExecutorService)
	{
		this.npcInfoClient = npcInfoClient;
		scheduledExecutorService.execute(this::loadNpcs);
	}

	@Nullable
	public NpcInfo getNpcInfo(int npcId)
	{
		return npcMap.get(npcId);
	}

	@Nullable
	public Integer getHealth(int npcId)
	{
		NpcInfo npcInfo = npcMap.get(npcId);
		return npcInfo == null ? null : npcInfo.getHitpoints();
	}

	private void loadNpcs()
	{
		try
		{
			npcMap = npcInfoClient.getNpcs();
		}
		catch (IOException e)
		{
			log.warn("error loading npc stats", e);
		}
	}
}
