/**
  * @param Restaurant $restaurant
  * @return bool
  */
 public function validateRestaurant(Restaurant $restaurant)
 {
     if (null === $restaurant->getCommand()) {
         throw new \InvalidArgumentException('The command can\'t be null.');
     }
     if (!preg_match('/^\\/([a-z]+)$/', $restaurant->getCommand())) {
         throw new \InvalidArgumentException('Invalid command name format: /bagel, only letters are allowed and must start by /');
     }
     if (mb_strlen($restaurant->getName()) > 255) {
         throw new \InvalidArgumentException('The restaurant name must be less than 255 characters.');
     }
     if (null === $restaurant->getExample()) {
         throw new \InvalidArgumentException('The order example can\'t be null.');
     }
     if (null === $restaurant->getPhoneNumber()) {
         throw new \InvalidArgumentException('The restaurant phone number can\'t be null.');
     }
     if (!preg_match('/^[0-9]{10}$/', $restaurant->getPhoneNumber())) {
         throw new \InvalidArgumentException('Invalid restaurant phone number format: Only numbers are allowed.');
     }
     if (!preg_match('/^[0-9]{2}:[0-9]{2}$/', $restaurant->getStartHour())) {
         throw new \InvalidArgumentException('Invalid start hour format.');
     }
     if (!preg_match('/^[0-9]{2}:[0-9]{2}$/', $restaurant->getEndHour())) {
         throw new \InvalidArgumentException('Invalid end hour format.');
     }
     if (null === $restaurant->getToken()) {
         throw new \InvalidArgumentException('The token can\'t be null.');
     }
     if ($restaurant->sendOrderByEmail() && null === $restaurant->getEndHour()) {
         throw new \InvalidArgumentException('You must set the restaurant email if you want to send order by email');
     }
     if ($restaurant->sendOrderByEmail() && null === $restaurant->getSenderEmail()) {
         throw new \InvalidArgumentException('You must set the sender email if you want to send order by email');
     }
     return true;
 }
 /**
  * @return array
  */
 public function help()
 {
     $text = $this->translator->trans('order.help', ['%commandName%' => $this->restaurant->getCommand(), '%orderExample%' => $this->restaurant->getExample(), '%restaurantName%' => $this->restaurant->getName(), '%optionPlace%' => $this->translator->trans("command.options.place"), '%optionCancel%' => $this->translator->trans("command.options.cancel"), '%optionList%' => $this->translator->trans("command.options.list"), '%optionSend%' => $this->translator->trans("command.options.send"), '%optionHistory%' => $this->translator->trans("command.options.history"), '%optionMenu%' => $this->translator->trans("command.options.menu")]);
     return ['text' => $text, 'mrkdwn' => true, 'attachments' => [['fallback' => 'Fail ?', 'text' => $this->translator->trans('order.helpDanger', ['%endHourOrderAllow%' => $this->restaurant->getEndHour()]), 'color' => 'danger']]];
 }