public function __construct()
{
$cacheDir = __DIR__ . '/../../../../../app/cache/';
$articleFileCacheDir = $cacheDir . 'api_article_file/';
if (!is_dir($cacheDir) || !is_dir($articleFileCacheDir)) {
mkdir($articleFileCacheDir, 0775, true);
}
if (!file_exists($articleFileCacheDir . 'sampleArticleFile')) {
file_put_contents($articleFileCacheDir . 'sampleArticleFile', file_get_contents($this->sampleArticleFile));
}
$this->sampleArticleFileEncoded = base64_encode(file_get_contents($articleFileCacheDir . 'sampleArticleFile'));
}