package net.minecraft.world.level.levelgen.structure.templatesystem.loader;

import java.nio.file.Path;
import java.util.List;
import net.minecraft.IdentifierException;
import net.minecraft.resources.FileToIdConverter;
import net.minecraft.resources.Identifier;
import net.minecraft.server.packs.PackType;
import net.minecraft.util.FileUtil;

public class TemplatePathFactory {
	private final Path sourceDir;

	public TemplatePathFactory(final Path sourceDir, final PackType packType) {
		this(sourceDir.resolve(packType.getDirectory()));
	}

	public TemplatePathFactory(final Path sourceDir) {
		this.sourceDir = sourceDir;
	}

	public Path createAndValidatePathToStructure(final Identifier id, final FileToIdConverter converter) {
		return this.createAndValidatePathToStructure(converter.idToFile(id));
	}

	public Path createAndValidatePathToStructure(final Identifier resourceLocation) {
		Path namespacePath = this.sourceDir.resolve(resourceLocation.getNamespace());
		List<String> decomposedPath = FileUtil.decomposePath(resourceLocation.getPath())
			.getOrThrow(msg -> new IdentifierException("Invalid file path '" + resourceLocation + "': " + msg));
		if (!decomposedPath.stream().allMatch(FileUtil::isPathPartPortable)) {
			throw new IdentifierException("Resource path '" + resourceLocation + "' is not portable");
		} else {
			return FileUtil.resolvePath(namespacePath, decomposedPath);
		}
	}
}