application = $application;
        $this->filesystem = $filesystem->createLocalDriver(['root' => public_path()]);
    }
    /**
     * Modify a URL to append the asset hash.
     *
     * @param string $resource
     * @return string
     *
     * @throws \Illuminate\Contracts\Filesystem\FileNotFoundException
     */
    public function url(string $resource): string
    {
        $file = last(explode('/', $resource));
        $data = Arr::get($this->manifest(), $file) ?? $file;
        return str_replace($file, Arr::get($data, 'src') ?? $file, $resource);
    }
    /**
     * Return the data integrity hash for a resource.
     *
     * @param string $resource
     * @return string
     *
     * @throws \Illuminate\Contracts\Filesystem\FileNotFoundException
     */
    public function integrity(string $resource): string
    {
        $file = last(explode('/', $resource));
        $data = array_get($this->manifest(), $file, $file);
        return Arr::get($data, 'integrity') ?? '';
    }
    /**
     * Return a built CSS import using the provided URL.
     *
     * @param string $resource
     * @return string
     *
     * @throws \Illuminate\Contracts\Filesystem\FileNotFoundException
     */
    public function css(string $resource): string
    {
        return '';
    }
    /**
     * Return a built JS import using the provided URL.
     *
     * @param string $resource
     * @return string
     *
     * @throws \Illuminate\Contracts\Filesystem\FileNotFoundException
     */
    public function js(string $resource): string
    {
        return '';
    }
    /**
     * Get the asset manifest and store it in the cache for quicker lookups.
     *
     * @return array
     *
     * @throws \Illuminate\Contracts\Filesystem\FileNotFoundException
     */
    protected function manifest(): array
    {
        return self::$manifest ?: self::$manifest = json_decode(
            $this->filesystem->get(self::MANIFEST_PATH), true
        );
    }
}