subscriptionsAvailableTest()

gistfile1.txt

public function subscriptionsAvailableTest() {
    $settings = new LiveGlam_WaitlistSettings;
    $io = new LiveGlam_InventoryOrder;

    // get settings and convert to ratio for calculations
    $replacement = $settings->getReplacementPercentage() / 100;
    $buffer = $settings->getActivationBuffer() / 100;

    // get orderLimit for period
    $orderLimit = $io->getNextOrderLimitByCategory( $this->productCategory );
    $replacementUnits = $orderLimit * $replacement;
    $bufferUnits = $orderLimit * $buffer;
    $activationCap = $orderLimit - $replacementUnits - $bufferUnits;

    // get shippable count
    $shippableCount = LiveGlam_SubscriberCount::getShippable( $this->productCategory );

    // if activationCap greater, we can activate the difference
    if( $activationCap > $shippableCount ) {
      return $activationCap - $shippableCount;
    }

    // no room to activate
    return 0;
  }