package net.minecraft.commands.arguments;

import com.mojang.brigadier.StringReader;
import com.mojang.brigadier.arguments.ArgumentType;
import com.mojang.brigadier.context.CommandContext;
import com.mojang.brigadier.exceptions.CommandSyntaxException;
import com.mojang.brigadier.exceptions.SimpleCommandExceptionType;
import java.util.Arrays;
import java.util.Collection;
import net.minecraft.commands.CommandSourceStack;
import net.minecraft.commands.arguments.coordinates.WorldCoordinate;
import net.minecraft.network.chat.Component;
import net.minecraft.util.Mth;

public class AngleArgument implements ArgumentType<AngleArgument.SingleAngle> {
	private static final Collection<String> EXAMPLES = Arrays.asList("0", "~", "~-5");
	public static final SimpleCommandExceptionType ERROR_NOT_COMPLETE = new SimpleCommandExceptionType(Component.translatable("argument.angle.incomplete"));
	public static final SimpleCommandExceptionType ERROR_INVALID_ANGLE = new SimpleCommandExceptionType(Component.translatable("argument.angle.invalid"));

	public static AngleArgument angle() {
		return new AngleArgument();
	}

	public static float getAngle(CommandContext<CommandSourceStack> context, String name) {
		return context.<AngleArgument.SingleAngle>getArgument(name, AngleArgument.SingleAngle.class).getAngle(context.getSource());
	}

	public AngleArgument.SingleAngle parse(StringReader reader) throws CommandSyntaxException {
		if (!reader.canRead()) {
			throw ERROR_NOT_COMPLETE.createWithContext(reader);
		} else {
			boolean bl = WorldCoordinate.isRelative(reader);
			float f = reader.canRead() && reader.peek() != ' ' ? reader.readFloat() : 0.0F;
			if (!Float.isNaN(f) && !Float.isInfinite(f)) {
				return new AngleArgument.SingleAngle(f, bl);
			} else {
				throw ERROR_INVALID_ANGLE.createWithContext(reader);
			}
		}
	}

	@Override
	public Collection<String> getExamples() {
		return EXAMPLES;
	}

	public static final class SingleAngle {
		private final float angle;
		private final boolean isRelative;

		SingleAngle(float angle, boolean isRelative) {
			this.angle = angle;
			this.isRelative = isRelative;
		}

		public float getAngle(CommandSourceStack source) {
			return Mth.wrapDegrees(this.isRelative ? this.angle + source.getRotation().y : this.angle);
		}
	}
}