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<?php
namespace BotMan\BotMan\Messages;
use BotMan\BotMan\Commands\Command;
use BotMan\BotMan\Interfaces\DriverInterface;
use BotMan\BotMan\Interfaces\Middleware\Matching;
use BotMan\BotMan\Messages\Incoming\Answer;
use BotMan\BotMan\Messages\Incoming\IncomingMessage;
use Illuminate\Support\Collection;
class Matcher
{
/**
* regular expression to capture named parameters but not quantifiers
* captures {name}, but not {1}, {1,}, or {1,2}.
*/
const PARAM_NAME_REGEX = '/\{((?:(?!\d+,?\d+?)\w)+?)\}/';
/** @var array */
protected $matches;
/**
* @param IncomingMessage $message
* @param Answer $answer
* @param Command $command
* @param DriverInterface $driver
* @param Matching[] $middleware
* @return bool
*/
public function isMessageMatching(IncomingMessage $message, Answer $answer, Command $command, DriverInterface $driver, $middleware = [])
{
return $this->isDriverValid($driver->getName(), $command->getDriver()) &&
$this->isRecipientValid($message->getRecipient(), $command->getRecipients()) &&
$this->isPatternValid($message, $answer, $command->getPattern(), $command->getMiddleware() + $middleware);
}
/**
* @param IncomingMessage $message
* @param Answer $answer
* @param string $pattern
* @param Matching[] $middleware
* @return int
*/
public function isPatternValid(IncomingMessage $message, Answer $answer, $pattern, $middleware = [])
{
$this->matches = [];
$answerText = $answer->getValue();
if (is_array($answerText)) {
$answerText = '';
}
$pattern = str_replace('/', '\/', $pattern);
$text = '/^' . preg_replace(self::PARAM_NAME_REGEX, '(?<$1>.*)', $pattern) . ' ?$/miu';
$regexMatched = (bool) preg_match($text, (string)$message->getText(), $this->matches) || (bool) preg_match($text, (string)$answerText, $this->matches);
// Try middleware first
if (count($middleware)) {
return Collection::make($middleware)->reject(function (Matching $middleware) use (
$message,
$pattern,
$regexMatched
) {
return $middleware->matching($message, $pattern, $regexMatched);
})->isEmpty() === true;
}
return $regexMatched;
}
/**
* @param string $driverName
* @param string|array $allowedDrivers
* @return bool
*/
protected function isDriverValid($driverName, $allowedDrivers)
{
if (!is_null($allowedDrivers)) {
return Collection::make($allowedDrivers)->contains($driverName);
}
return true;
}
/**
* @param $givenRecipient
* @param $allowedRecipients
* @return bool
*/
protected function isRecipientValid($givenRecipient, $allowedRecipients)
{
if (null === $allowedRecipients) {
return true;
}
return in_array($givenRecipient, $allowedRecipients);
}
/**
* @return array
*/
public function getMatches()
{
return array_slice($this->matches, 1);
}
}
Zerion Mini Shell 1.0