package net.minecraft.util.filefix.virtualfilesystem;

import java.io.IOException;
import java.nio.file.FileStore;
import java.nio.file.Files;
import java.nio.file.attribute.BasicFileAttributeView;
import java.nio.file.attribute.FileAttributeView;
import java.nio.file.attribute.FileStoreAttributeView;
import org.jspecify.annotations.Nullable;

public class CopyOnWriteFileStore extends FileStore {
	private final String name;
	private final CopyOnWriteFileSystem fs;

	public CopyOnWriteFileStore(final String name, final CopyOnWriteFileSystem fs) {
		this.name = name;
		this.fs = fs;
	}

	@Override
	public String name() {
		return this.name;
	}

	@Override
	public String type() {
		return "copy-on-write";
	}

	@Override
	public boolean isReadOnly() {
		return false;
	}

	@Override
	public long getTotalSpace() throws IOException {
		return Files.getFileStore(this.fs.tmpDirectory()).getTotalSpace();
	}

	@Override
	public long getUsableSpace() throws IOException {
		return Files.getFileStore(this.fs.tmpDirectory()).getUsableSpace();
	}

	@Override
	public long getUnallocatedSpace() throws IOException {
		return Files.getFileStore(this.fs.tmpDirectory()).getUnallocatedSpace();
	}

	@Override
	public boolean supportsFileAttributeView(final Class<? extends FileAttributeView> type) {
		return type == BasicFileAttributeView.class;
	}

	@Override
	public boolean supportsFileAttributeView(final String name) {
		return "basic".equals(name);
	}

	@Override
	public <V extends FileStoreAttributeView> @Nullable V getFileStoreAttributeView(final Class<V> type) {
		throw new UnsupportedOperationException();
	}

	@Override
	public Object getAttribute(final String attribute) throws IOException {
		throw new UnsupportedOperationException();
	}
}