/**
* Direct invocation of the constructor is not permitted.
*/
protected function __construct()
{
$dir = \RX_BASEDIR . 'files/cache/store';
if (!Storage::isDirectory($dir)) {
Storage::createDirectory($dir);
}
$key = substr(hash_hmac('sha256', $dir, config('crypto.authentication_key')), 0, 32);
$filename = "{$dir}/{$key}.db";
if (Storage::exists($filename)) {
$this->_connect($filename);
} else {
$this->_connect($filename);
for ($i = 0; $i < 32; $i++) {
$this->_dbh->exec('CREATE TABLE cache_' . $i . ' (k TEXT PRIMARY KEY, v TEXT, exp INT)');
}
}
}
