<?php
/**
* WooCommerce Subscriptions Add Cart Item.
*
* A class to assist in the calculations required to add an item to an existing subscription.
* To enable proration, adding a product to a subscription inherits all the switch item (@see WCS_Switch_Cart_Item) functionality, however, doesn't have an existing item (@see WCS_Switch_Cart_Item::$existing_item) to replace.
*
* @package WooCommerce Subscriptions
* @author Prospress
* @since 2.6.0
*/
class WCS_Add_Cart_Item extends WCS_Switch_Cart_Item {
/**
* Constructor.
*
* An item being added to a subscription is just a switch item, without an existing item.
*
* @since 2.6.0
*
* @param array $cart_item The cart item.
* @param WC_Subscription $subscription The subscription being switched.
*
* @throws Exception If WC_Subscriptions_Product::get_expiration_date() returns an invalid date.
*/
public function __construct( $cart_item, $subscription ) {
parent::__construct( $cart_item, $subscription, null );
}
/** Getters */
/**
* Gets the old subscription's price per day.
*
* For items being added to a subscription, there is no old item's price and so 0 should be returned.
*
* @since 2.6.0
* @return float
*/
public function get_old_price_per_day() {
if ( ! isset( $this->old_price_per_day ) ) {
$this->old_price_per_day = apply_filters( 'wcs_switch_proration_old_price_per_day', 0, $this->subscription, $this->cart_item, 0, $this->get_days_in_old_cycle() );
}
return $this->old_price_per_day;
}
/**
* Gets the total paid for the current period.
*
* For items being added to a subscription there isn't anything paid which needs to be honoured and so 0 has been paid.
*
* @since 2.6.0
* @return float
*/
public function get_total_paid_for_current_period() {
return 0;
}
/**
* Determines if the last order was a switch and the outcome of that was a fully reduced pre-paid term.
* Since the last order didn't contain this item, we can safely return false here.
*
* @since 3.0.7
* @return bool Whether the last order was a switch and it fully reduced the prepaid term.
*/
protected function is_switch_after_fully_reduced_prepaid_term() {
return false;
}
/** Helper functions */
/**
* Determines whether the new product's trial period matches the old product's trial period.
*
* For items being added to a subscription there isn't an existing item to match so false is returned.
*
* @since 2.6.0
* @return bool
*/
public function trial_periods_match() {
return false;
}
}