// $Id$
/*
 * WorldEdit
 * Copyright (C) 2010 sk89q <http://www.sk89q.com> and contributors
 *
 * 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.sk89q.worldedit.blocks;

import java.util.HashMap;
import java.util.Map;

import com.sk89q.jnbt.CompoundTag;
import com.sk89q.jnbt.NBTUtils;
import com.sk89q.jnbt.ShortTag;
import com.sk89q.jnbt.StringTag;
import com.sk89q.jnbt.Tag;
import com.sk89q.worldedit.MobType;
import com.sk89q.worldedit.data.DataException;

/**
 * A mob spawner block.
 *
 * @author sk89q
 */
public class MobSpawnerBlock extends BaseBlock implements TileEntityBlock {
    
    private String mobType;
    private short delay;

    /**
     * Construct the mob spawner block with a pig as the mob type.
     */
    public MobSpawnerBlock() {
        super(BlockID.MOB_SPAWNER);
        this.mobType = MobType.PIG.getName();
    }

    /**
     * Construct the mob spawner block with a given mob type.
     *
     * @param mobType mob type
     */
    public MobSpawnerBlock(String mobType) {
        super(BlockID.MOB_SPAWNER);
        this.mobType = mobType;
    }

    /**
     * Construct the mob spawner block with a specified data value.
     *
     * @param data data value
     */
    public MobSpawnerBlock(int data) {
        super(BlockID.MOB_SPAWNER, data);
    }

    /**
     * Construct the mob spawner block.
     *
     * @param data data value
     * @param mobType mob type
     */
    public MobSpawnerBlock(int data, String mobType) {
        super(BlockID.MOB_SPAWNER, data);
        this.mobType = mobType;
    }

    /**
     * Get the mob type.
     *
     * @return the mob type
     */
    public String getMobType() {
        return mobType;
    }

    /**
     * Set the mob type.
     *
     * @param mobType the mob type
     */
    public void setMobType(String mobType) {
        this.mobType = mobType;
    }

    /**
     * Get the spawn delay.
     * 
     * @return the delay
     */
    public short getDelay() {
        return delay;
    }

    /**
     * Set the spawn delay.
     * 
     * @param delay the delay to set
     */
    public void setDelay(short delay) {
        this.delay = delay;
    }
    
    @Override
    public boolean hasNbtData() {
        return true;
    }

    @Override
    public String getNbtId() {
        return "MobSpawner";
    }

    @Override
    public CompoundTag getNbtData() {
        Map<String, Tag> values = new HashMap<String, Tag>();
        values.put("EntityId", new StringTag("EntityId", mobType));
        values.put("Delay", new ShortTag("Delay", delay));
        return new CompoundTag(getNbtId(), values);
    }

    @Override
    public void setNbtData(CompoundTag rootTag) throws DataException {
        if (rootTag == null) {
            return;
        }

        Map<String, Tag> values = rootTag.getValue();

        Tag t = values.get("id");
        if (!(t instanceof StringTag) || !((StringTag) t).getValue().equals("MobSpawner")) {
            throw new DataException("'MobSpawner' tile entity expected");
        }

        StringTag mobTypeTag = NBTUtils.getChildTag(values, "EntityId", StringTag.class);
        ShortTag delayTag = NBTUtils.getChildTag(values, "Delay", ShortTag.class);

        this.mobType = mobTypeTag.getValue();
        this.delay = delayTag.getValue();
    }
}