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<?php namespace Spline\Cachet\Hashing;

use Illuminate\Hashing\BcryptHasher;

class SplineHasher extends BcryptHasher {

	/**
	 * Check the given plain value against a hash.
	 *
	 * @param  string  $value
	 * @param  string  $hashedValue
	 * @param  array   $options
	 * @return bool
	 */
	public function check($value, $hashedValue, array $options = array())
	{
		if (starts_with($hashedValue, '{')) {
			if (starts_with($hashedValue, '{SSHA}')) {
				$hash = base64_decode(substr($hashedValue, 6));
				$salt = substr($hash, 20);
				if ((pack("H*", sha1($value.$salt)).$salt) == $hash) {
					return true;
				}
			}
			elseif (starts_with($hashedValue, '{SMD5}')) {
				$hash = base64_decode(substr($hashedValue, 6));
				$salt = substr($hash, 16);
				if ((md5($value.$salt, true).$salt) == $hash) {
					return true;
				}
			}
			elseif (starts_with(strtolower($hashedValue), '{crypt}')) {
				$hash = substr($hashedValue, 7);
				if (password_verify($value, $hash)) {
					return true;
				}
			}

			return false;
		}

		return parent::check($value, $hashedValue, $options);
	}

	/**
	 * Check if the given hash has been hashed using the given options.
	 *
	 * @param  string  $hashedValue
	 * @param  array   $options
	 * @return bool
	 */
	public function needsRehash($hashedValue, array $options = array())
	{
		if (starts_with($hashedValue, '{')) {
			return false;
		}

		return parent::needsRehash($hashedValue, $options);
	}
}