[SOLVED] Add to Cart Button based on own rules

<?php
  $this->setLayout('show_block_product_gunshop_notices');
  echo $this->loadTemplate();
?>

defined('_JEXEC') or die('Restricted access');
?>
<?php
// Read product values from current record
$productIsWesRequired = (strcasecmp($this->element->product_requires_wes, "yeswes") == 0) ? true : false;
$productIsContractRequired = (strcasecmp($this->element->product_requires_contract, "yescontract") == 0) ? true : false;
$productIsCriminalRecordRequired = (strcasecmp($this->element->product_requires_criminal_record_doc, "yescriminalrecord") == 0) ? true : false;
$productIsAdultRequired = (strcasecmp($this->element->product_requires_adult, "yesadult") == 0) ? true : false;
$productIsRestrictedForOnlineSale = (strcasecmp($this->element->product_restrict_online_sale, "yesrestrictedonlinesale") == 0) ? true : false;

// Load user data and read them to the required variables
$hikaShopUser = hikaShop_loadUser(true);
$isUserLoggedIn = (is_null($hikaShopUser)) ? false : true;

$userAge = 0;
$isUserAdult = false;
$isUsersPermitValid = false;
$isUsersBirthdateRegistered = false;
$isUsersValidityExpireDateRegistered = false;

if ($isUserLoggedIn) {
  // Calculate age of customer
  $usersBirthdate = $hikaShopUser->user_date_of_birth;
  if(!is_null($usersBirthdate)) {
    if(strlen($usersBirthdate) > 0) {
      $isUsersBirthdateRegistered = true;
      $birthday_timestamp = strtotime($hikaShopUser->user_date_of_birth);
      $userAge = date('md', $birthday_timestamp) > date('md') ? date('Y') - date('Y', $birthday_timestamp) - 1 : date('Y') - date('Y', $birthday_timestamp);
      if($userAge < 0) {
        $userAge = 0; // in case when a future date has been entered for birthdate.
      }
      if($userAge >= 18) {
        $isUserAdult = true;
      }
    }
  }

  // Calculate if the user is valid.
  $usersValidityExpireDate = $hikaShopUser->user_validity_expire_date;
  if(!is_null($usersValidityExpireDate)) {
    if(strlen($usersValidityExpireDate) > 0) {
      $isUsersValidityExpireDateRegistered = true;
      $validity_timestamp = strtotime($hikaShopUser->user_validity_expire_date);
      $now_timestamp = strtotime("now");
      if($validity_timestamp > $now_timestamp) {
        $isUsersPermitValid = true;
      }
      else {
        if($validity_timestamp == $now_timestamp) {
          $isUsersPermitValid = true;
        }
      }
    }
  }
}

$displayCart = true;
if($productIsWesRequired || $productIsContractRequired || $productIsRestrictedForOnlineSale)
{
    $displayCart = false;
}
else if ($productIsCriminalRecordRequired && $isUsersPermitValid == false)
{
    $displayCart = false;
}
else if($productIsAdultRequired && $isUserAdult == false)
{
    $displayCart = false;
}

$displayNoStockMessage = true;
if($productIsWesRequired || $productIsContractRequired || $productIsRestrictedForOnlineSale)
{
    $displayNoStockMessage = false;
}

if($productIsWesRequired || $productIsContractRequired || $productIsCriminalRecordRequired || $productIsAdultRequired || $productIsRestrictedForOnlineSale) {?>
  <br /><p><a href="#anch_important_product_notice"><strong><span style="background-color: #ffff00; color: #ff0000;"><?php echo JText::_('CHECK_SPECIAL_PRODUCT_NOTICE_ENDOFPAGE') ?></span></strong></a></p><br />
<?php }

}elseif(!$this->params->get('catalogue') && ($this->config->get('display_add_to_cart_for_free_products') || !empty($this->row->prices))){

}elseif(!$this->params->get('catalogue') && $displayCart && ($this->config->get('display_add_to_cart_for_free_products') || !empty($this->row->prices))){

if($displayNoStockMessage)
            {
              echo JText::_('NO_STOCK');
            }