import java.util.Collections;
import java.util.SortedSet;

import static org.apache.commons.io.filefilter.FileFilterUtils.directoryFileFilter;

public class VersionSpecificCacheDirectoryScanner {

    private final File baseDir;

    public VersionSpecificCacheDirectoryScanner(File baseDir) {
        this.baseDir = baseDir;
    }

    public File getBaseDir() {
        return baseDir;
    }

    private static final Logger LOGGER = LoggerFactory.getLogger(VersionSpecificCacheCleanupAction.class);

    private final VersionSpecificCacheDirectoryScanner versionSpecificCacheDirectoryScanner;
    private final Supplier<Long> releaseTimestampSupplier;
    private final Supplier<Long> snapshotTimestampSupplier;
    private final Deleter deleter;

public class UsedGradleVersionsFromGradleUserHomeCaches implements UsedGradleVersions {

    private final VersionSpecificCacheDirectoryScanner directoryScanner;

    public UsedGradleVersionsFromGradleUserHomeCaches(GlobalScopedCacheBuilderFactory cacheBuilderFactory) {
        directoryScanner = new VersionSpecificCacheDirectoryScanner(cacheBuilderFactory.getRootDir());
    }

    @Override

    TestFile cacheBaseDir = temporaryFolder.createDir(DefaultCacheScopeMapping.GLOBAL_CACHE_DIR_NAME)

    @Subject def versionSpecificCacheDirectoryService = new VersionSpecificCacheDirectoryScanner(cacheBaseDir)

    def "lists version-specific cache directories"() {
        given:
        cacheBaseDir.createDir("_foo")
        cacheBaseDir.createDir("1.2.3-rc-1")