package net.minecraft.util;

import com.mojang.serialization.Codec;
import com.mojang.serialization.codecs.RecordCodecBuilder;
import java.util.Optional;
import java.util.function.Predicate;
import java.util.regex.Pattern;
import net.minecraft.resources.Identifier;

public class IdentifierPattern {
	public static final Codec<IdentifierPattern> CODEC = RecordCodecBuilder.create(
		i -> i.group(
				ExtraCodecs.PATTERN.optionalFieldOf("namespace").forGetter(o -> o.namespacePattern),
				ExtraCodecs.PATTERN.optionalFieldOf("path").forGetter(o -> o.pathPattern)
			)
			.apply(i, IdentifierPattern::new)
	);
	private final Optional<Pattern> namespacePattern;
	private final Predicate<String> namespacePredicate;
	private final Optional<Pattern> pathPattern;
	private final Predicate<String> pathPredicate;
	private final Predicate<Identifier> locationPredicate;

	private IdentifierPattern(final Optional<Pattern> namespacePattern, final Optional<Pattern> pathPattern) {
		this.namespacePattern = namespacePattern;
		this.namespacePredicate = (Predicate<String>)namespacePattern.map(Pattern::asPredicate).orElse((Predicate)r -> true);
		this.pathPattern = pathPattern;
		this.pathPredicate = (Predicate<String>)pathPattern.map(Pattern::asPredicate).orElse((Predicate)r -> true);
		this.locationPredicate = location -> this.namespacePredicate.test(location.getNamespace()) && this.pathPredicate.test(location.getPath());
	}

	public Predicate<String> namespacePredicate() {
		return this.namespacePredicate;
	}

	public Predicate<String> pathPredicate() {
		return this.pathPredicate;
	}

	public Predicate<Identifier> locationPredicate() {
		return this.locationPredicate;
	}
}