protected Directory getDirectory()

in genie-web/src/main/java/com/netflix/genie/web/resources/writers/DefaultDirectoryWriter.java [187:242]
50 lines of code
9 McCabe index (conditional complexity)

    protected Directory getDirectory(final File directory, final String requestUrl, final boolean includeParent) {
        if (!directory.isDirectory()) {
            throw new IllegalArgumentException("Input directory is not a valid directory. Unable to continue.");
        }
        if (StringUtils.isBlank(requestUrl)) {
            throw new IllegalArgumentException("No request url entered. Unable to continue.");
        }
        final Directory dir = new Directory();

        if (includeParent) {
            final Entry parent = new Entry();
            String url = requestUrl;
            if (url.charAt(url.length() - 1) == '/') {
                url = url.substring(0, url.length() - 2);
            }
            // Rip off the last directory
            url = url.substring(0, url.lastIndexOf('/'));
            parent.setName("../");
            parent.setUrl(url);
            parent.setSize(0L);
            parent.setLastModified(Instant.ofEpochMilli(directory.getParentFile().getAbsoluteFile().lastModified()));
            dir.setParent(parent);
        }

        final File[] files = directory.listFiles();
        dir.setDirectories(Lists.newArrayList());
        dir.setFiles(Lists.newArrayList());
        final String baseURL = requestUrl.endsWith("/") ? requestUrl : requestUrl + "/";
        if (files != null) {
            for (final File file : files) {
                final Entry entry = new Entry();
                entry.setLastModified(Instant.ofEpochMilli(file.getAbsoluteFile().lastModified()));
                if (file.isDirectory()) {
                    entry.setName(file.getName() + "/");
                    entry.setUrl(baseURL + file.getName() + "/");
                    entry.setSize(0L);
                    dir.getDirectories().add(entry);
                } else {
                    entry.setName(file.getName());
                    entry.setUrl(baseURL + file.getName());
                    entry.setSize(file.getAbsoluteFile().length());
                    dir.getFiles().add(entry);
                }
            }
        }

        dir.getDirectories().sort(
            Comparator.comparing(Entry::getName)
        );

        dir.getFiles().sort(
            Comparator.comparing(Entry::getName)
        );

        return dir;
    }