/*
 * This file is part of EssentialCmds, licensed under the MIT License (MIT).
 *
 * Copyright (c) 2015 - 2015 HassanS6000
 * Copyright (c) contributors
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package io.github.hsyyid.essentialcmds.cmdexecutors;

import com.flowpowered.math.vector.Vector3d;
import io.github.hsyyid.essentialcmds.internal.CommandExecutorBase;
import org.spongepowered.api.command.CommandException;
import org.spongepowered.api.command.CommandResult;
import org.spongepowered.api.command.CommandSource;
import org.spongepowered.api.command.args.CommandContext;
import org.spongepowered.api.command.args.GenericArguments;
import org.spongepowered.api.command.spec.CommandSpec;
import org.spongepowered.api.data.key.Keys;
import org.spongepowered.api.entity.Entity;
import org.spongepowered.api.entity.EntityTypes;
import org.spongepowered.api.entity.living.player.Player;
import org.spongepowered.api.event.cause.Cause;
import org.spongepowered.api.event.cause.NamedCause;
import org.spongepowered.api.event.cause.entity.spawn.SpawnCause;
import org.spongepowered.api.event.cause.entity.spawn.SpawnTypes;
import org.spongepowered.api.text.Text;
import org.spongepowered.api.text.format.TextColors;
import org.spongepowered.api.util.blockray.BlockRay;
import org.spongepowered.api.util.blockray.BlockRayHit;
import org.spongepowered.api.world.Location;
import org.spongepowered.api.world.World;
import org.spongepowered.api.world.extent.Extent;

import java.util.Optional;

import javax.annotation.Nonnull;

public class KittyCannonExecutor extends CommandExecutorBase
{
	public CommandResult execute(CommandSource src, CommandContext ctx) throws CommandException
	{
		Optional<Player> optionalTarget = ctx.<Player> getOne("player");

		if (!optionalTarget.isPresent())
		{
			if (src instanceof Player)
			{
				Player player = (Player) src;
				BlockRay<World> playerBlockRay = BlockRay.from(player).blockLimit(350).build();

				Location<World> spawnLocation = null;
				int i = 0;

				while (playerBlockRay.hasNext())
				{
					// TODO: Come up with a better way of making sure it doesn't hit the player.
					i++;

					BlockRayHit<World> currentHitRay = playerBlockRay.next();

					if (i > 5)
					{
						// We can set the spawn location, so break here.
						spawnLocation = currentHitRay.getLocation();
						break;
					}
				}

				Vector3d velocity = player.getTransform().getRotationAsQuaternion().getDirection();
				spawnEntity(spawnLocation, velocity, player);
				player.sendMessage(Text.of(TextColors.GREEN, "Success! ", TextColors.YELLOW, "Fired kitty!"));
			}
			else
			{
				src.sendMessage(Text.of(TextColors.DARK_RED, "Error! ", TextColors.RED, "Must be an in-game player to use /kittycannon!"));
			}
		}
		else
		{
			Player player = optionalTarget.get();
			Location<World> playerLocation = player.getLocation();
			Vector3d velocity = player.getTransform().getRotationAsQuaternion().getDirection();
			spawnEntity(playerLocation, velocity, src);
			player.sendMessage(Text.of(TextColors.GRAY, src.getName(), TextColors.GOLD, " has fired kittens at you."));
			src.sendMessage(Text.of(TextColors.GREEN, "Success! ", TextColors.YELLOW, "Attacked " + player.getName() + " with kittens."));
		}

		return CommandResult.success();
	}

	public void spawnEntity(Location<World> location, Vector3d velocity, CommandSource src)
	{
		velocity = velocity.mul(5);
		Extent extent = location.getExtent();
		Entity kitten = extent.createEntity(EntityTypes.OCELOT, location.getPosition());
		kitten.offer(Keys.VELOCITY, velocity);
		extent.spawnEntity(kitten, Cause.of(NamedCause.source(SpawnCause.builder().type(SpawnTypes.CUSTOM).build())));
	}

	@Nonnull
	@Override
	public String[] getAliases()
	{
		return new String[] { "kittycannon" };
	}

	@Nonnull
	@Override
	public CommandSpec getSpec()
	{
		return CommandSpec.builder()
			.description(Text.of("Kitty Cannon Command"))
			.permission("essentialcmds.kittycannon.use")
			.arguments(GenericArguments.optional(GenericArguments.onlyOne(GenericArguments.player(Text.of("player")))))
			.executor(this)
			.build();
	}
}