982 lines
30 KiB
PHP
982 lines
30 KiB
PHP
<?php
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/**
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* Discount calculation
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*
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* @author Automattic
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* @package WooCommerce/Classes
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* @version 3.2.0
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* @since 3.2.0
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*/
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if ( ! defined( 'ABSPATH' ) ) {
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exit;
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}
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/**
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* Discounts class.
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*/
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class WC_Discounts {
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/**
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* An array of items to discount.
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*
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* @var array
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*/
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protected $items = array();
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/**
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* Stores fee total from cart/order. Manual discounts can discount this.
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*
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* @var int
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*/
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protected $fee_total = 0;
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/**
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* Stores shipping total from cart/order. Manual discounts can discount this.
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*
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* @var int
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*/
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protected $shipping_total = 0;
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/**
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* An array of discounts which have been applied to items.
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*
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* @var array[] Code => Item Key => Value
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*/
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protected $discounts = array();
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/**
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* An array of applied WC_Discount objects.
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*
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* @var array
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*/
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protected $manual_discounts = array();
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/**
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* Constructor.
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*
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* @param array $object Cart or order object.
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*/
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public function __construct( $object = array() ) {
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if ( is_a( $object, 'WC_Cart' ) ) {
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$this->set_items_from_cart( $object );
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} elseif ( is_a( $object, 'WC_Order' ) ) {
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$this->set_items_from_order( $object );
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}
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}
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/**
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* Normalise cart items which will be discounted.
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*
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* @since 3.2.0
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* @param array $cart Cart object.
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*/
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public function set_items_from_cart( $cart ) {
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$this->items = $this->discounts = $this->manual_discounts = array();
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if ( ! is_a( $cart, 'WC_Cart' ) ) {
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return;
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}
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foreach ( $cart->get_cart() as $key => $cart_item ) {
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$item = new stdClass();
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$item->key = $key;
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$item->object = $cart_item;
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$item->product = $cart_item['data'];
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$item->quantity = $cart_item['quantity'];
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$item->price = wc_add_number_precision_deep( $item->product->get_price() ) * $item->quantity;
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$this->items[ $key ] = $item;
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}
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uasort( $this->items, array( $this, 'sort_by_price' ) );
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}
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/**
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* Normalise order items which will be discounted.
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*
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* @since 3.2.0
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* @param array $order Cart object.
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*/
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public function set_items_from_order( $order ) {
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$this->items = $this->discounts = $this->manual_discounts = array();
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$this->fee_total = $this->shipping_total = 0;
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if ( ! is_a( $order, 'WC_Order' ) ) {
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return;
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}
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foreach ( $order->get_items() as $order_item ) {
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$item = new stdClass();
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$item->key = $order_item->get_id();
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$item->object = $order_item;
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$item->product = $order_item->get_product();
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$item->quantity = $order_item->get_quantity();
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$item->price = wc_add_number_precision_deep( $order_item->get_total() );
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$this->items[ $order_item->get_id() ] = $item;
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}
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uasort( $this->items, array( $this, 'sort_by_price' ) );
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foreach ( $order->get_fees() as $item ) {
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$this->fee_total += wc_add_number_precision( $item->get_total() );
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}
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$this->shipping_total = wc_add_number_precision( $order->get_shipping_total() );
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}
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/**
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* Get items.
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*
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* @since 3.2.0
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* @return object[]
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*/
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public function get_items() {
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return $this->items;
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}
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/**
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* Get discount by key with or without precision.
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*
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* @since 3.2.0
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* @param string $key name of discount row to return.
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* @param bool $in_cents Should the totals be returned in cents, or without precision.
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* @return array
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*/
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public function get_discount( $key, $in_cents = false ) {
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$item_discount_totals = $this->get_discounts_by_item( $in_cents );
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return isset( $item_discount_totals[ $key ] ) ? ( $in_cents ? $item_discount_totals[ $key ] : wc_remove_number_precision( $item_discount_totals[ $key ] ) ) : 0;
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}
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/**
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* Get all discount totals.
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*
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* @since 3.2.0
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* @param bool $in_cents Should the totals be returned in cents, or without precision.
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* @return array
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*/
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public function get_discounts( $in_cents = false ) {
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$discounts = $this->discounts;
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foreach ( $this->get_manual_discounts() as $manual_discount_key => $manual_discount ) {
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$discounts[ $manual_discount_key ] = $manual_discount->get_discount_total();
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}
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return $in_cents ? $discounts : wc_remove_number_precision_deep( $discounts );
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}
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/**
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* Get all discount totals per item.
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*
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* @since 3.2.0
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* @param bool $in_cents Should the totals be returned in cents, or without precision.
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* @return array
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*/
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public function get_discounts_by_item( $in_cents = false ) {
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$discounts = $this->discounts;
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$item_discount_totals = (array) array_shift( $discounts );
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foreach ( $discounts as $item_discounts ) {
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foreach ( $item_discounts as $item_key => $item_discount ) {
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$item_discount_totals[ $item_key ] += $item_discount;
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}
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}
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return $in_cents ? $item_discount_totals : wc_remove_number_precision_deep( $item_discount_totals );
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}
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/**
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* Get all discount totals per coupon.
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*
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* @since 3.2.0
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* @param bool $in_cents Should the totals be returned in cents, or without precision.
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* @return array
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*/
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public function get_discounts_by_coupon( $in_cents = false ) {
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$coupon_discount_totals = array_map( 'array_sum', $this->discounts );
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return $in_cents ? $coupon_discount_totals : wc_remove_number_precision_deep( $coupon_discount_totals );
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}
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/**
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* Get an array of manual discounts which have been applied.
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*
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* @since 3.2.0
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* @return WC_Discount[]
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*/
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public function get_manual_discounts() {
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return $this->manual_discounts;
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}
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/**
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* Get discounted price of an item without precision.
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*
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* @since 3.2.0
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* @param object $item Get data for this item.
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* @return float
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*/
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public function get_discounted_price( $item ) {
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return wc_remove_number_precision_deep( $this->get_discounted_price_in_cents( $item ) );
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}
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/**
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* Get discounted price of an item to precision (in cents).
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*
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* @since 3.2.0
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* @param object $item Get data for this item.
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* @return int
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*/
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public function get_discounted_price_in_cents( $item ) {
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return absint( $item->price - $this->get_discount( $item->key, true ) );
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}
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/**
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* Get total remaining after discounts.
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*
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* @since 3.2.0
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* @return int
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*/
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protected function get_total_after_discounts() {
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$total_to_discount = 0;
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// Sum line item costs.
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foreach ( $this->items as $item ) {
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$total_to_discount += $this->get_discounted_price_in_cents( $item );
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}
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// Manual discounts can also discount shipping and fees.
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$total_to_discount += $this->shipping_total + $this->fee_total;
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// Remove existing discount amounts.
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foreach ( $this->manual_discounts as $key => $value ) {
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$total_to_discount = $total_to_discount - $value->get_discount_total();
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}
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return $total_to_discount;
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}
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/**
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* Generate a unique ID for a discount.
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*
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* @param WC_Discount $discount Discount object.
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* @return string
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*/
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protected function generate_discount_id( $discount ) {
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$discount_id = '';
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$index = 1;
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while ( ! $discount_id ) {
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$discount_id = 'discount-' . $discount->get_amount() . ( 'percent' === $discount->get_discount_type() ? '%' : '' );
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if ( 1 < $index ) {
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$discount_id .= '-' . $index;
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}
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if ( isset( $this->manual_discounts[ $discount_id ] ) ) {
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$index ++;
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$discount_id = '';
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}
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}
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return $discount_id;
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}
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/**
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* Apply a discount to all items.
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*
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* @param string|object $raw_discount Accepts a string (fixed or percent discounts), or WC_Coupon object.
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* @param string $discount_id Optional ID for the discount. Generated from discount or coupon code if not defined.
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* @return bool|WP_Error True if applied or WP_Error instance in failure.
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*/
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public function apply_discount( $raw_discount, $discount_id = null ) {
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if ( is_a( $raw_discount, 'WC_Coupon' ) ) {
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return $this->apply_coupon( $raw_discount );
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}
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$discount = new WC_Discount;
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if ( strstr( $raw_discount, '%' ) ) {
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$discount->set_discount_type( 'percent' );
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$discount->set_amount( trim( $raw_discount, '%' ) );
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} elseif ( is_numeric( $raw_discount ) && 0 < floatval( $raw_discount ) ) {
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$discount->set_discount_type( 'fixed' );
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$discount->set_amount( wc_add_number_precision( floatval( $raw_discount ) ) );
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}
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if ( ! $discount->get_amount() ) {
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return new WP_Error( 'invalid_discount', __( 'Invalid discount', 'woocommerce' ) );
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}
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$total_to_discount = $this->get_total_after_discounts();
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if ( 'percent' === $discount->get_discount_type() ) {
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$discount->set_discount_total( $discount->get_amount() * ( $total_to_discount / 100 ) );
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} else {
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$discount->set_discount_total( min( $discount->get_amount(), $total_to_discount ) );
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}
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$discount_id = $discount_id ? $discount_id : $this->generate_discount_id( $discount );
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$this->manual_discounts[ $discount_id ] = $discount;
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return true;
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}
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/**
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* Apply a discount to all items using a coupon.
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*
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* @since 3.2.0
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* @param WC_Coupon $coupon Coupon object being applied to the items.
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* @return bool|WP_Error True if applied or WP_Error instance in failure.
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*/
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public function apply_coupon( $coupon ) {
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if ( ! is_a( $coupon, 'WC_Coupon' ) ) {
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return new WP_Error( 'invalid_coupon', __( 'Invalid coupon', 'woocommerce' ) );
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}
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$is_coupon_valid = $this->is_coupon_valid( $coupon );
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if ( is_wp_error( $is_coupon_valid ) ) {
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return $is_coupon_valid;
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}
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if ( ! isset( $this->discounts[ $coupon->get_code() ] ) ) {
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$this->discounts[ $coupon->get_code() ] = array_fill_keys( array_keys( $this->items ), 0 );
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}
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$items_to_apply = $this->get_items_to_apply_coupon( $coupon );
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$coupon_type = $coupon->get_discount_type();
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// Core discounts are handled here as of 3.2.
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switch ( $coupon->get_discount_type() ) {
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case 'percent' :
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$this->apply_coupon_percent( $coupon, $items_to_apply );
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break;
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case 'fixed_product' :
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$this->apply_coupon_fixed_product( $coupon, $items_to_apply );
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break;
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case 'fixed_cart' :
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$this->apply_coupon_fixed_cart( $coupon, $items_to_apply );
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break;
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default :
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foreach ( $items_to_apply as $item ) {
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$discounted_price = $this->get_discounted_price_in_cents( $item );
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$price_to_discount = wc_remove_number_precision( ( 'yes' === get_option( 'woocommerce_calc_discounts_sequentially', 'no' ) ) ? $item->price : $discounted_price );
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$discount = wc_add_number_precision( $coupon->get_discount_amount( $price_to_discount, $item->object ) ) * $item->quantity;
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$discount = min( $discounted_price, $discount );
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// Store code and discount amount per item.
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$this->discounts[ $coupon->get_code() ][ $item->key ] += $discount;
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}
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break;
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}
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return true;
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}
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/**
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* Sort by price.
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*
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* @since 3.2.0
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* @param array $a First element.
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* @param array $b Second element.
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* @return int
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*/
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protected function sort_by_price( $a, $b ) {
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$price_1 = $a->price * $a->quantity;
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$price_2 = $b->price * $b->quantity;
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if ( $price_1 === $price_2 ) {
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return 0;
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}
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return ( $price_1 < $price_2 ) ? 1 : -1;
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}
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/**
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* Filter out all products which have been fully discounted to 0.
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* Used as array_filter callback.
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*
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* @since 3.2.0
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* @param object $item Get data for this item.
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* @return bool
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*/
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protected function filter_products_with_price( $item ) {
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return $this->get_discounted_price_in_cents( $item ) > 0;
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}
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/**
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* Get items which the coupon should be applied to.
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*
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* @since 3.2.0
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* @param object $coupon Coupon object.
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* @return array
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*/
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protected function get_items_to_apply_coupon( $coupon ) {
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$items_to_apply = array();
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$limit_usage_qty = 0;
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$applied_count = 0;
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if ( null !== $coupon->get_limit_usage_to_x_items() ) {
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$limit_usage_qty = $coupon->get_limit_usage_to_x_items();
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}
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foreach ( $this->items as $item ) {
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if ( 0 === $this->get_discounted_price_in_cents( $item ) ) {
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continue;
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}
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if ( ! $coupon->is_valid_for_product( $item->product, $item->object ) && ! $coupon->is_valid_for_cart() ) {
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continue;
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}
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if ( $limit_usage_qty && $applied_count > $limit_usage_qty ) {
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break;
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}
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if ( $limit_usage_qty && $item->quantity > ( $limit_usage_qty - $applied_count ) ) {
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$limit_to_qty = absint( $limit_usage_qty - $applied_count );
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$item->price = ( $item->price / $item->quantity ) * $limit_to_qty;
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$item->quantity = $limit_to_qty; // Lower the qty so the discount is applied less.
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}
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if ( 0 >= $item->quantity ) {
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continue;
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}
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$items_to_apply[] = $item;
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$applied_count += $item->quantity;
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}
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return $items_to_apply;
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}
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/**
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* Apply percent discount to items and return an array of discounts granted.
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*
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* @since 3.2.0
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* @param WC_Coupon $coupon Coupon object. Passed through filters.
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* @param array $items_to_apply Array of items to apply the coupon to.
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* @return int Total discounted.
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*/
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protected function apply_coupon_percent( $coupon, $items_to_apply ) {
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$total_discount = 0;
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$cart_total = 0;
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foreach ( $items_to_apply as $item ) {
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// Find out how much price is available to discount for the item.
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$discounted_price = $this->get_discounted_price_in_cents( $item );
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// Get the price we actually want to discount, based on settings.
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$price_to_discount = ( 'yes' === get_option( 'woocommerce_calc_discounts_sequentially', 'no' ) ) ? $item->price: $discounted_price;
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// Total up.
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$cart_total += $price_to_discount;
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// Run coupon calculations.
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$discount = floor( $price_to_discount * ( $coupon->get_amount() / 100 ) );
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if ( has_filter( 'woocommerce_coupon_get_discount_amount' ) ) {
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// Send through the legacy filter, but not as cents.
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$discount = wc_add_number_precision( apply_filters( 'woocommerce_coupon_get_discount_amount', wc_remove_number_precision( $discount ), wc_remove_number_precision( $price_to_discount ), $item->object, false, $coupon ) );
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}
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$discount = min( $discounted_price, $discount );
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$total_discount += $discount;
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// Store code and discount amount per item.
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$this->discounts[ $coupon->get_code() ][ $item->key ] += $discount;
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}
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// Work out how much discount would have been given to the cart has a whole and compare to what was discounted on all line items.
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$cart_total_discount = wc_cart_round_discount( $cart_total * ( $coupon->get_amount() / 100 ), 0 );
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if ( $total_discount < $cart_total_discount ) {
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$total_discount += $this->apply_coupon_remainder( $coupon, $items_to_apply, $cart_total_discount - $total_discount );
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}
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return $total_discount;
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}
|
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|
|
/**
|
|
* Apply fixed product discount to items.
|
|
*
|
|
* @since 3.2.0
|
|
* @param WC_Coupon $coupon Coupon object. Passed through filters.
|
|
* @param array $items_to_apply Array of items to apply the coupon to.
|
|
* @param int $amount Fixed discount amount to apply in cents. Leave blank to pull from coupon.
|
|
* @return int Total discounted.
|
|
*/
|
|
protected function apply_coupon_fixed_product( $coupon, $items_to_apply, $amount = null ) {
|
|
$total_discount = 0;
|
|
$amount = $amount ? $amount : wc_add_number_precision( $coupon->get_amount() );
|
|
|
|
foreach ( $items_to_apply as $item ) {
|
|
// Find out how much price is available to discount for the item.
|
|
$discounted_price = $this->get_discounted_price_in_cents( $item );
|
|
|
|
// Get the price we actually want to discount, based on settings.
|
|
$price_to_discount = ( 'yes' === get_option( 'woocommerce_calc_discounts_sequentially', 'no' ) ) ? $item->price: $discounted_price;
|
|
|
|
// Run coupon calculations.
|
|
$discount = $amount * $item->quantity;
|
|
|
|
if ( has_filter( 'woocommerce_coupon_get_discount_amount' ) ) {
|
|
// Send through the legacy filter, but not as cents.
|
|
$discount = wc_add_number_precision( apply_filters( 'woocommerce_coupon_get_discount_amount', wc_remove_number_precision( $discount ), wc_remove_number_precision( $price_to_discount ), $item->object, false, $coupon ) );
|
|
}
|
|
|
|
$discount = min( $discounted_price, $discount );
|
|
$total_discount += $discount;
|
|
|
|
// Store code and discount amount per item.
|
|
$this->discounts[ $coupon->get_code() ][ $item->key ] += $discount;
|
|
}
|
|
return $total_discount;
|
|
}
|
|
|
|
/**
|
|
* Apply fixed cart discount to items.
|
|
*
|
|
* @since 3.2.0
|
|
* @param WC_Coupon $coupon Coupon object. Passed through filters.
|
|
* @param array $items_to_apply Array of items to apply the coupon to.
|
|
* @param int $amount Fixed discount amount to apply in cents. Leave blank to pull from coupon.
|
|
* @return int Total discounted.
|
|
*/
|
|
protected function apply_coupon_fixed_cart( $coupon, $items_to_apply, $amount = null ) {
|
|
$total_discount = 0;
|
|
$amount = $amount ? $amount : wc_add_number_precision( $coupon->get_amount() );
|
|
$items_to_apply = array_filter( $items_to_apply, array( $this, 'filter_products_with_price' ) );
|
|
|
|
if ( ! $item_count = array_sum( wp_list_pluck( $items_to_apply, 'quantity' ) ) ) {
|
|
return $total_discount;
|
|
}
|
|
|
|
if ( ! $amount ) {
|
|
// If there is no amount we still send it through so filters are fired.
|
|
$total_discount = $this->apply_coupon_fixed_product( $coupon, $items_to_apply, 0 );
|
|
} else {
|
|
$per_item_discount = absint( $amount / $item_count ); // round it down to the nearest cent.
|
|
|
|
if ( $per_item_discount > 0 ) {
|
|
$total_discount = $this->apply_coupon_fixed_product( $coupon, $items_to_apply, $per_item_discount );
|
|
|
|
/**
|
|
* If there is still discount remaining, repeat the process.
|
|
*/
|
|
if ( $total_discount > 0 && $total_discount < $amount ) {
|
|
$total_discount += $this->apply_coupon_fixed_cart( $coupon, $items_to_apply, $amount - $total_discount );
|
|
}
|
|
} elseif ( $amount > 0 ) {
|
|
$total_discount += $this->apply_coupon_remainder( $coupon, $items_to_apply, $amount );
|
|
}
|
|
}
|
|
return $total_discount;
|
|
}
|
|
|
|
/**
|
|
* Deal with remaining fractional discounts by splitting it over items
|
|
* until the amount is expired, discounting 1 cent at a time.
|
|
*
|
|
* @since 3.2.0
|
|
* @param WC_Coupon $coupon Coupon object if appliable. Passed through filters.
|
|
* @param array $items_to_apply Array of items to apply the coupon to.
|
|
* @param int $amount Fixed discount amount to apply.
|
|
* @return int Total discounted.
|
|
*/
|
|
protected function apply_coupon_remainder( $coupon, $items_to_apply, $amount ) {
|
|
$total_discount = 0;
|
|
|
|
foreach ( $items_to_apply as $item ) {
|
|
for ( $i = 0; $i < $item->quantity; $i ++ ) {
|
|
// Find out how much price is available to discount for the item.
|
|
$discounted_price = $this->get_discounted_price_in_cents( $item );
|
|
|
|
// Get the price we actually want to discount, based on settings.
|
|
$price_to_discount = ( 'yes' === get_option( 'woocommerce_calc_discounts_sequentially', 'no' ) ) ? $item->price: $discounted_price;
|
|
|
|
// Run coupon calculations.
|
|
$discount = min( $discounted_price, 1 );
|
|
|
|
// Store totals.
|
|
$total_discount += $discount;
|
|
|
|
// Store code and discount amount per item.
|
|
$this->discounts[ $coupon->get_code() ][ $item->key ] += $discount;
|
|
|
|
if ( $total_discount >= $amount ) {
|
|
break 2;
|
|
}
|
|
}
|
|
if ( $total_discount >= $amount ) {
|
|
break;
|
|
}
|
|
}
|
|
return $total_discount;
|
|
}
|
|
|
|
/*
|
|
|--------------------------------------------------------------------------
|
|
| Validation & Error Handling
|
|
|--------------------------------------------------------------------------
|
|
*/
|
|
|
|
/**
|
|
* Ensure coupon exists or throw exception.
|
|
*
|
|
* @since 3.2.0
|
|
* @throws Exception Error message.
|
|
* @param WC_Coupon $coupon Coupon data.
|
|
* @return bool
|
|
*/
|
|
protected function validate_coupon_exists( $coupon ) {
|
|
if ( ! $coupon->get_id() ) {
|
|
/* translators: %s: coupon code */
|
|
throw new Exception( sprintf( __( 'Coupon "%s" does not exist!', 'woocommerce' ), $coupon->get_code() ), 105 );
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Ensure coupon usage limit is valid or throw exception.
|
|
*
|
|
* @since 3.2.0
|
|
* @throws Exception Error message.
|
|
* @param WC_Coupon $coupon Coupon data.
|
|
* @return bool
|
|
*/
|
|
protected function validate_coupon_usage_limit( $coupon ) {
|
|
if ( $coupon->get_usage_limit() > 0 && $coupon->get_usage_count() >= $coupon->get_usage_limit() ) {
|
|
throw new Exception( __( 'Coupon usage limit has been reached.', 'woocommerce' ), 106 );
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Ensure coupon user usage limit is valid or throw exception.
|
|
*
|
|
* Per user usage limit - check here if user is logged in (against user IDs).
|
|
* Checked again for emails later on in WC_Cart::check_customer_coupons().
|
|
*
|
|
* @since 3.2.0
|
|
* @throws Exception Error message.
|
|
* @param WC_Coupon $coupon Coupon data.
|
|
* @param int $user_id User ID.
|
|
* @return bool
|
|
*/
|
|
protected function validate_coupon_user_usage_limit( $coupon, $user_id = 0 ) {
|
|
if ( empty( $user_id ) ) {
|
|
$user_id = get_current_user_id();
|
|
}
|
|
|
|
if ( $coupon && $user_id && $coupon->get_usage_limit_per_user() > 0 && $coupon->get_id() && $coupon->get_data_store() ) {
|
|
$date_store = $coupon->get_data_store();
|
|
$usage_count = $date_store->get_usage_by_user_id( $coupon, $user_id );
|
|
if ( $usage_count >= $coupon->get_usage_limit_per_user() ) {
|
|
throw new Exception( __( 'Coupon usage limit has been reached.', 'woocommerce' ), 106 );
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Ensure coupon date is valid or throw exception.
|
|
*
|
|
* @since 3.2.0
|
|
* @throws Exception Error message.
|
|
* @param WC_Coupon $coupon Coupon data.
|
|
* @return bool
|
|
*/
|
|
protected function validate_coupon_expiry_date( $coupon ) {
|
|
if ( $coupon->get_date_expires() && current_time( 'timestamp', true ) > $coupon->get_date_expires()->getTimestamp() ) {
|
|
throw new Exception( __( 'This coupon has expired.', 'woocommerce' ), 107 );
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Ensure coupon amount is valid or throw exception.
|
|
*
|
|
* @since 3.2.0
|
|
* @throws Exception Error message.
|
|
* @param WC_Coupon $coupon Coupon data.
|
|
* @param float $subtotal Items subtotal.
|
|
* @return bool
|
|
*/
|
|
protected function validate_coupon_minimum_amount( $coupon, $subtotal = 0 ) {
|
|
if ( $coupon->get_minimum_amount() > 0 && apply_filters( 'woocommerce_coupon_validate_minimum_amount', $coupon->get_minimum_amount() > $subtotal, $coupon, $subtotal ) ) {
|
|
/* translators: %s: coupon minimum amount */
|
|
throw new Exception( sprintf( __( 'The minimum spend for this coupon is %s.', 'woocommerce' ), wc_price( $coupon->get_minimum_amount() ) ), 108 );
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Ensure coupon amount is valid or throw exception.
|
|
*
|
|
* @since 3.2.0
|
|
* @throws Exception Error message.
|
|
* @param WC_Coupon $coupon Coupon data.
|
|
* @param float $subtotal Items subtotal.
|
|
* @return bool
|
|
*/
|
|
protected function validate_coupon_maximum_amount( $coupon, $subtotal = 0 ) {
|
|
if ( $coupon->get_maximum_amount() > 0 && apply_filters( 'woocommerce_coupon_validate_maximum_amount', $coupon->get_maximum_amount() < $subtotal, $coupon ) ) {
|
|
/* translators: %s: coupon maximum amount */
|
|
throw new Exception( sprintf( __( 'The maximum spend for this coupon is %s.', 'woocommerce' ), wc_price( $coupon->get_maximum_amount() ) ), 112 );
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Ensure coupon is valid for products in the list is valid or throw exception.
|
|
*
|
|
* @since 3.2.0
|
|
* @throws Exception Error message.
|
|
* @param WC_Coupon $coupon Coupon data.
|
|
* @return bool
|
|
*/
|
|
protected function validate_coupon_product_ids( $coupon ) {
|
|
if ( count( $coupon->get_product_ids() ) > 0 ) {
|
|
$valid = false;
|
|
|
|
foreach ( $this->items as $item ) {
|
|
if ( $item->product && in_array( $item->product->get_id(), $coupon->get_product_ids(), true ) || in_array( $item->product->get_parent_id(), $coupon->get_product_ids(), true ) ) {
|
|
$valid = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if ( ! $valid ) {
|
|
throw new Exception( __( 'Sorry, this coupon is not applicable to selected products.', 'woocommerce' ), 109 );
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Ensure coupon is valid for product categories in the list is valid or throw exception.
|
|
*
|
|
* @since 3.2.0
|
|
* @throws Exception Error message.
|
|
* @param WC_Coupon $coupon Coupon data.
|
|
* @return bool
|
|
*/
|
|
protected function validate_coupon_product_categories( $coupon ) {
|
|
if ( count( $coupon->get_product_categories() ) > 0 ) {
|
|
$valid = false;
|
|
|
|
foreach ( $this->items as $item ) {
|
|
if ( $coupon->get_exclude_sale_items() && $item->product && $item->product->is_on_sale() ) {
|
|
continue;
|
|
}
|
|
|
|
$product_cats = wc_get_product_cat_ids( $item->product->get_id() );
|
|
|
|
// If we find an item with a cat in our allowed cat list, the coupon is valid.
|
|
if ( count( array_intersect( $product_cats, $coupon->get_product_categories() ) ) > 0 ) {
|
|
$valid = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if ( ! $valid ) {
|
|
throw new Exception( __( 'Sorry, this coupon is not applicable to selected products.', 'woocommerce' ), 109 );
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Ensure coupon is valid for sale items in the list is valid or throw exception.
|
|
*
|
|
* @since 3.2.0
|
|
* @throws Exception Error message.
|
|
* @param WC_Coupon $coupon Coupon data.
|
|
* @return bool
|
|
*/
|
|
protected function validate_coupon_sale_items( $coupon ) {
|
|
if ( $coupon->get_exclude_sale_items() ) {
|
|
$valid = false;
|
|
|
|
foreach ( $this->items as $item ) {
|
|
if ( $item->product && ! $item->product->is_on_sale() ) {
|
|
$valid = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if ( ! $valid ) {
|
|
throw new Exception( __( 'Sorry, this coupon is not valid for sale items.', 'woocommerce' ), 110 );
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* All exclusion rules must pass at the same time for a product coupon to be valid.
|
|
*
|
|
* @since 3.2.0
|
|
* @throws Exception Error message.
|
|
* @param WC_Coupon $coupon Coupon data.
|
|
* @return bool
|
|
*/
|
|
protected function validate_coupon_excluded_items( $coupon ) {
|
|
if ( ! empty( $this->items ) && $coupon->is_type( wc_get_product_coupon_types() ) ) {
|
|
$valid = false;
|
|
|
|
foreach ( $this->items as $item ) {
|
|
if ( $item->product && $coupon->is_valid_for_product( $item->product, $item->object ) ) {
|
|
$valid = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if ( ! $valid ) {
|
|
throw new Exception( __( 'Sorry, this coupon is not applicable to selected products.', 'woocommerce' ), 109 );
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Cart discounts cannot be added if non-eligible product is found.
|
|
*
|
|
* @since 3.2.0
|
|
* @throws Exception Error message.
|
|
* @param WC_Coupon $coupon Coupon data.
|
|
* @return bool
|
|
*/
|
|
protected function validate_coupon_eligible_items( $coupon ) {
|
|
if ( ! $coupon->is_type( wc_get_product_coupon_types() ) ) {
|
|
$this->validate_coupon_excluded_product_ids( $coupon );
|
|
$this->validate_coupon_excluded_product_categories( $coupon );
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Exclude products.
|
|
*
|
|
* @since 3.2.0
|
|
* @throws Exception Error message.
|
|
* @param WC_Coupon $coupon Coupon data.
|
|
* @return bool
|
|
*/
|
|
protected function validate_coupon_excluded_product_ids( $coupon ) {
|
|
// Exclude Products.
|
|
if ( count( $coupon->get_excluded_product_ids() ) > 0 ) {
|
|
$products = array();
|
|
|
|
foreach ( $this->items as $item ) {
|
|
if ( $item->product && in_array( $item->product->get_id(), $coupon->get_excluded_product_ids(), true ) || in_array( $item->product->get_parent_id(), $coupon->get_excluded_product_ids(), true ) ) {
|
|
$products[] = $item->product->get_name();
|
|
}
|
|
}
|
|
|
|
if ( ! empty( $products ) ) {
|
|
/* translators: %s: products list */
|
|
throw new Exception( sprintf( __( 'Sorry, this coupon is not applicable to the products: %s.', 'woocommerce' ), implode( ', ', $products ) ), 113 );
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Exclude categories from product list.
|
|
*
|
|
* @since 3.2.0
|
|
* @throws Exception Error message.
|
|
* @param WC_Coupon $coupon Coupon data.
|
|
* @return bool
|
|
*/
|
|
protected function validate_coupon_excluded_product_categories( $coupon ) {
|
|
if ( count( $coupon->get_excluded_product_categories() ) > 0 ) {
|
|
$categories = array();
|
|
|
|
foreach ( $this->items as $item ) {
|
|
if ( $coupon->get_exclude_sale_items() && $item->product && $item->product->is_on_sale() ) {
|
|
continue;
|
|
}
|
|
|
|
$product_cats = wc_get_product_cat_ids( $item->product->get_id() );
|
|
$cat_id_list = array_intersect( $product_cats, $coupon->get_excluded_product_categories() );
|
|
if ( count( $cat_id_list ) > 0 ) {
|
|
foreach ( $cat_id_list as $cat_id ) {
|
|
$cat = get_term( $cat_id, 'product_cat' );
|
|
$categories[] = $cat->name;
|
|
}
|
|
}
|
|
}
|
|
|
|
if ( ! empty( $categories ) ) {
|
|
/* translators: %s: categories list */
|
|
throw new Exception( sprintf( __( 'Sorry, this coupon is not applicable to the categories: %s.', 'woocommerce' ), implode( ', ', array_unique( $categories ) ) ), 114 );
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Check if a coupon is valid.
|
|
*
|
|
* Error Codes:
|
|
* - 100: Invalid filtered.
|
|
* - 101: Invalid removed.
|
|
* - 102: Not yours removed.
|
|
* - 103: Already applied.
|
|
* - 104: Individual use only.
|
|
* - 105: Not exists.
|
|
* - 106: Usage limit reached.
|
|
* - 107: Expired.
|
|
* - 108: Minimum spend limit not met.
|
|
* - 109: Not applicable.
|
|
* - 110: Not valid for sale items.
|
|
* - 111: Missing coupon code.
|
|
* - 112: Maximum spend limit met.
|
|
* - 113: Excluded products.
|
|
* - 114: Excluded categories.
|
|
*
|
|
* @since 3.2.0
|
|
* @throws Exception Error message.
|
|
* @param WC_Coupon $coupon Coupon data.
|
|
* @return bool|WP_Error
|
|
*/
|
|
public function is_coupon_valid( $coupon ) {
|
|
try {
|
|
$this->validate_coupon_exists( $coupon );
|
|
$this->validate_coupon_usage_limit( $coupon );
|
|
$this->validate_coupon_user_usage_limit( $coupon );
|
|
$this->validate_coupon_expiry_date( $coupon );
|
|
$this->validate_coupon_minimum_amount( $coupon );
|
|
$this->validate_coupon_maximum_amount( $coupon );
|
|
$this->validate_coupon_product_ids( $coupon );
|
|
$this->validate_coupon_product_categories( $coupon );
|
|
$this->validate_coupon_sale_items( $coupon );
|
|
$this->validate_coupon_excluded_items( $coupon );
|
|
$this->validate_coupon_eligible_items( $coupon );
|
|
|
|
if ( ! apply_filters( 'woocommerce_coupon_is_valid', true, $coupon, $this ) ) {
|
|
throw new Exception( __( 'Coupon is not valid.', 'woocommerce' ), 100 );
|
|
}
|
|
} catch ( Exception $e ) {
|
|
/**
|
|
* Filter the coupon error message.
|
|
*
|
|
* @param string $error_message Error message.
|
|
* @param int $error_code Error code.
|
|
* @param WC_Coupon $coupon Coupon data.
|
|
*/
|
|
$message = apply_filters( 'woocommerce_coupon_error', $e->getMessage(), $e->getCode(), $coupon );
|
|
|
|
return new WP_Error( 'invalid_coupon', $message, array(
|
|
'status' => 400,
|
|
) );
|
|
}
|
|
return true;
|
|
}
|
|
}
|