woocommerce/includes/class-wc-cart.php

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<?php
/**
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* WooCommerce cart
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*
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* The WooCommerce cart class stores cart data and active coupons as well as handling customer sessions and some cart related urls.
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* The cart class also has a price calculation function which calls upon other classes to calculate totals.
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*
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* @class WC_Cart
* @version 2.1.0
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* @package WooCommerce/Classes
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* @category Class
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* @author WooThemes
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*/
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class WC_Cart {
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/** @var array Contains an array of cart items. */
public $cart_contents = array();
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/** @var array Contains an array of coupon codes applied to the cart. */
public $applied_coupons = array();
/** @var array Contains an array of coupon code discounts after they have been applied. */
public $coupon_discount_amounts = array();
/** @var array Contains an array of coupon usage counts after they have been applied. */
public $coupon_applied_count = array();
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/** @var float The total cost of the cart items. */
public $cart_contents_total;
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/** @var float The total weight of the cart items. */
public $cart_contents_weight;
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/** @var float The total count of the cart items. */
public $cart_contents_count;
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/** @var float The total tax for the cart items. */
public $cart_contents_tax;
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/** @var float Cart grand total. */
public $total;
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/** @var float Cart subtotal. */
public $subtotal;
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/** @var float Cart subtotal without tax. */
public $subtotal_ex_tax;
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/** @var float Total cart tax. */
public $tax_total;
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/** @var array An array of taxes/tax rates for the cart. */
public $taxes;
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/** @var array An array of taxes/tax rates for the shipping. */
public $shipping_taxes;
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/** @var float Discounts before tax. */
public $discount_cart;
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/** @var float Discounts after tax. */
public $discount_total;
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/** @var float Total for additional fees. */
public $fee_total;
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/** @var float Shipping cost. */
public $shipping_total;
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/** @var float Shipping tax. */
public $shipping_tax_total;
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/** @var WC_Tax */
public $tax;
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/** @var array cart_session_data */
public $cart_session_data = array();
/** @var array An array of fees. */
public $fees = array();
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/**
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* Constructor for the cart class. Loads options and hooks in the init method.
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*
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* @access public
* @return void
*/
public function __construct() {
$this->tax = new WC_Tax();
$this->prices_include_tax = get_option( 'woocommerce_prices_include_tax' ) == 'yes';
$this->round_at_subtotal = get_option('woocommerce_tax_round_at_subtotal') == 'yes';
$this->tax_display_cart = get_option( 'woocommerce_tax_display_cart' );
$this->dp = absint( get_option( 'woocommerce_price_num_decimals' ) );
$this->display_totals_ex_tax = $this->tax_display_cart == 'excl';
$this->display_cart_ex_tax = $this->tax_display_cart == 'excl';
// Array of data the cart calculates and stores in the session with defaults
$this->cart_session_data = array(
'cart_contents_total' => 0,
'cart_contents_weight' => 0,
'cart_contents_count' => 0,
'cart_contents_tax' => 0,
'total' => 0,
'subtotal' => 0,
'subtotal_ex_tax' => 0,
'tax_total' => 0,
'taxes' => array(),
'shipping_taxes' => array(),
'discount_cart' => 0,
'discount_total' => 0,
'shipping_total' => 0,
'shipping_tax_total' => 0,
'coupon_discount_amounts' => array(),
);
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add_action( 'init', array( $this, 'init' ), 5 ); // Get cart on init
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add_action( 'wp', array( $this, 'maybe_set_cart_cookies' ), 99 ); // Set cookies
add_action( 'shutdown', array( $this, 'maybe_set_cart_cookies' ), 0 ); // Set cookies before shutdown and ob flushing
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}
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/**
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* Loads the cart data from the PHP session during WordPress init and hooks in other methods.
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*
* @access public
* @return void
*/
public function init() {
$this->get_cart_from_session();
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add_action( 'woocommerce_check_cart_items', array( $this, 'check_cart_items' ), 1 );
add_action( 'woocommerce_check_cart_items', array( $this, 'check_cart_coupons' ), 1 );
add_action( 'woocommerce_after_checkout_validation', array( $this, 'check_customer_coupons' ), 1 );
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}
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/**
* Will set cart cookies if needed, once, during WP hook
*/
public function maybe_set_cart_cookies() {
if ( ! headers_sent() ) {
if ( sizeof( $this->cart_contents ) > 0 ) {
$this->set_cart_cookies( true );
} elseif ( isset( $_COOKIE['woocommerce_items_in_cart'] ) ) {
$this->set_cart_cookies( false );
}
}
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}
/**
* Set cart hash cookie and items in cart.
*
* @access private
* @param bool $set (default: true)
* @return void
*/
private function set_cart_cookies( $set = true ) {
if ( $set ) {
wc_setcookie( 'woocommerce_items_in_cart', 1 );
wc_setcookie( 'woocommerce_cart_hash', md5( json_encode( $this->get_cart() ) ) );
} elseif ( isset( $_COOKIE['woocommerce_items_in_cart'] ) ) {
wc_setcookie( 'woocommerce_items_in_cart', 0, time() - 3600 );
wc_setcookie( 'woocommerce_cart_hash', '', time() - 3600 );
}
do_action( 'woocommerce_set_cart_cookies', $set );
}
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/*-----------------------------------------------------------------------------------*/
/* Cart Session Handling */
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/*-----------------------------------------------------------------------------------*/
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/**
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* Get the cart data from the PHP session and store it in class variables.
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*
* @access public
* @return void
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*/
public function get_cart_from_session() {
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// Load cart session data from session
foreach ( $this->cart_session_data as $key => $default ) {
$this->$key = WC()->session->get( $key, $default );
}
// Load coupons
$this->applied_coupons = array_filter( WC()->session->get( 'applied_coupons', array() ) );
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// Load the cart
$cart = WC()->session->get( 'cart', array() );
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$update_cart_session = false;
if ( is_array( $cart ) ) {
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foreach ( $cart as $key => $values ) {
$_product = wc_get_product( $values['variation_id'] ? $values['variation_id'] : $values['product_id'] );
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if ( ! empty( $_product ) && $_product->exists() && $values['quantity'] > 0 ) {
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if ( ! $_product->is_purchasable() ) {
// Flag to indicate the stored cart should be update
$update_cart_session = true;
wc_add_notice( sprintf( __( '%s has been removed from your cart because it can no longer be purchased. Please contact us if you need assistance.', 'woocommerce' ), $_product->get_title() ), 'error' );
} else {
// Put session data into array. Run through filter so other plugins can load their own session data
$this->cart_contents[ $key ] = apply_filters( 'woocommerce_get_cart_item_from_session', array(
'product_id' => $values['product_id'],
'variation_id' => $values['variation_id'],
'variation' => $values['variation'],
'quantity' => $values['quantity'],
'data' => $_product
), $values, $key );
}
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}
}
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}
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if ( $update_cart_session ) {
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WC()->session->cart = $this->get_cart_for_session();
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}
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// Trigger action
do_action( 'woocommerce_cart_loaded_from_session', $this );
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// Queue re-calc if subtotal is not set
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if ( ( ! $this->subtotal && sizeof( $this->cart_contents ) > 0 ) || $update_cart_session ) {
$this->calculate_totals();
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}
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}
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/**
* Sets the php session data for the cart and coupons.
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*/
public function set_session() {
// Set cart and coupon session data
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$cart_session = $this->get_cart_for_session();
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WC()->session->set( 'cart', $cart_session );
WC()->session->set( 'applied_coupons', $this->applied_coupons );
WC()->session->set( 'coupon_discount_amounts', $this->coupon_discount_amounts );
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foreach ( $this->cart_session_data as $key => $default ) {
WC()->session->set( $key, $this->$key );
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}
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if ( get_current_user_id() ) {
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$this->persistent_cart_update();
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}
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do_action( 'woocommerce_cart_updated' );
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}
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/**
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* Empties the cart and optionally the persistent cart too.
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*
* @access public
* @param bool $clear_persistent_cart (default: true)
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* @return void
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*/
public function empty_cart( $clear_persistent_cart = true ) {
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$this->cart_contents = array();
$this->reset();
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unset( WC()->session->order_awaiting_payment, WC()->session->applied_coupons, WC()->session->coupon_discount_amounts, WC()->session->cart );
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if ( $clear_persistent_cart && get_current_user_id() ) {
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$this->persistent_cart_destroy();
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}
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do_action( 'woocommerce_cart_emptied' );
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}
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/*-----------------------------------------------------------------------------------*/
/* Persistent cart handling */
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/*-----------------------------------------------------------------------------------*/
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/**
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* Save the persistent cart when the cart is updated.
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*
* @access public
* @return void
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*/
public function persistent_cart_update() {
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update_user_meta( get_current_user_id(), '_woocommerce_persistent_cart', array(
'cart' => WC()->session->cart,
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) );
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}
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/**
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* Delete the persistent cart permanently.
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*
* @access public
* @return void
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*/
public function persistent_cart_destroy() {
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delete_user_meta( get_current_user_id(), '_woocommerce_persistent_cart' );
}
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/*-----------------------------------------------------------------------------------*/
/* Cart Data Functions */
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/*-----------------------------------------------------------------------------------*/
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/**
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* Coupons enabled function. Filterable.
*
* @access public
* @return bool
*/
public function coupons_enabled() {
return apply_filters( 'woocommerce_coupons_enabled', get_option( 'woocommerce_enable_coupons' ) == 'yes' );
}
/**
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* Get number of items in the cart.
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*
* @access public
* @return int
*/
public function get_cart_contents_count() {
return apply_filters( 'woocommerce_cart_contents_count', $this->cart_contents_count );
}
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/**
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* Check all cart items for errors.
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*
* @access public
* @return void
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*/
public function check_cart_items() {
$result = $this->check_cart_item_validity();
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if ( is_wp_error( $result ) ) {
wc_add_notice( $result->get_error_message(), 'error' );
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}
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// Check item stock
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$result = $this->check_cart_item_stock();
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if ( is_wp_error( $result ) ) {
wc_add_notice( $result->get_error_message(), 'error' );
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}
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}
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/**
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* Check cart coupons for errors.
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*
* @access public
* @return void
*/
public function check_cart_coupons() {
foreach ( $this->applied_coupons as $code ) {
$coupon = new WC_Coupon( $code );
if ( ! $coupon->is_valid() ) {
// Error message
$coupon->add_coupon_message( WC_Coupon::E_WC_COUPON_INVALID_REMOVED );
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// Remove the coupon
$this->remove_coupon( $code );
// Flag totals for refresh
WC()->session->set( 'refresh_totals', true );
}
}
}
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/**
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* Get cart items quantities - merged so we can do accurate stock checks on items across multiple lines.
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*
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* @access public
* @return array
*/
public function get_cart_item_quantities() {
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$quantities = array();
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foreach ( $this->get_cart() as $cart_item_key => $values ) {
$_product = $values['data'];
if ( $_product->is_type( 'variation' ) && true === $_product->managing_stock() ) {
// Variation has stock levels defined so its handled individually
$quantities[ $values['variation_id'] ] = isset( $quantities[ $values['variation_id'] ] ) ? $quantities[ $values['variation_id'] ] + $values['quantity'] : $values['quantity'];
} else {
$quantities[ $values['product_id'] ] = isset( $quantities[ $values['product_id'] ] ) ? $quantities[ $values['product_id'] ] + $values['quantity'] : $values['quantity'];
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}
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}
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return $quantities;
}
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/**
* Looks through cart items and checks the posts are not trashed or deleted.
* @return bool|WP_Error
*/
public function check_cart_item_validity() {
foreach ( $this->get_cart() as $cart_item_key => $values ) {
$_product = $values['data'];
if ( ! $_product || ! $_product->exists() || $_product->post->post_status == 'trash' ) {
$this->set_quantity( $cart_item_key, 0 );
return new WP_Error( 'invalid', __( 'An item which is no longer available was removed from your cart.', 'woocommerce' ) );
}
}
return true;
}
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/**
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* Looks through the cart to check each item is in stock. If not, add an error.
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*
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* @access public
* @return bool|WP_Error
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*/
public function check_cart_item_stock() {
global $wpdb;
$error = new WP_Error();
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$product_qty_in_cart = $this->get_cart_item_quantities();
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// First stock check loop
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foreach ( $this->get_cart() as $cart_item_key => $values ) {
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$_product = $values['data'];
$key = '_product_id';
$value = $values['product_id'];
$in_cart = $values['quantity'];
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/**
* Check stock based on stock-status
*/
if ( ! $_product->is_in_stock() ) {
$error->add( 'out-of-stock', sprintf(__( 'Sorry, "%s" is not in stock. Please edit your cart and try again. We apologise for any inconvenience caused.', 'woocommerce' ), $_product->get_title() ) );
return $error;
}
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if ( ! $_product->managing_stock() ) {
continue;
}
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$check_qty = $_product->is_type( 'variation' ) && true === $_product->managing_stock() ? $product_qty_in_cart[ $values['variation_id'] ] : $product_qty_in_cart[ $values['product_id'] ];
/**
* Check stock based on all items in the cart
*/
if ( ! $_product->has_enough_stock( $check_qty ) ) {
$error->add( 'out-of-stock', sprintf(__( 'Sorry, we do not have enough "%s" in stock to fulfill your order (%s in stock). Please edit your cart and try again. We apologise for any inconvenience caused.', 'woocommerce' ), $_product->get_title(), $_product->get_stock_quantity() ) );
return $error;
}
/**
* Finally consider any held stock, from pending orders
*/
if ( get_option( 'woocommerce_hold_stock_minutes' ) > 0 && ! $_product->backorders_allowed() ) {
$order_id = isset( WC()->session->order_awaiting_payment ) ? absint( WC()->session->order_awaiting_payment ) : 0;
$held_stock = $wpdb->get_var(
$wpdb->prepare( "
SELECT SUM( order_item_meta.meta_value ) AS held_qty
FROM {$wpdb->posts} AS posts
LEFT JOIN {$wpdb->prefix}woocommerce_order_items as order_items ON posts.ID = order_items.order_id
LEFT JOIN {$wpdb->prefix}woocommerce_order_itemmeta as order_item_meta ON order_items.order_item_id = order_item_meta.order_item_id
LEFT JOIN {$wpdb->prefix}woocommerce_order_itemmeta as order_item_meta2 ON order_items.order_item_id = order_item_meta2.order_item_id
WHERE order_item_meta.meta_key = '_qty'
AND order_item_meta2.meta_key = %s AND order_item_meta2.meta_value = %d
AND posts.post_type IN ( '" . implode( "','", wc_get_order_types() ) . "' )
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AND posts.post_status = 'wc-pending'
AND posts.ID != %d;",
$_product->is_type( 'variation' ) && true === $_product->managing_stock() ? '_variation_id' : '_product_id',
$_product->is_type( 'variation' ) && true === $_product->managing_stock() ? $values['variation_id'] : $values['product_id'],
$order_id
)
);
$not_enough_stock = false;
if ( $_product->is_type( 'variation' ) && 'parent' === $_product->managing_stock() && $_product->parent->get_stock_quantity() < ( $held_stock + $check_qty ) ) {
$not_enough_stock = true;
} elseif ( $_product->get_stock_quantity() < ( $held_stock + $check_qty ) ) {
$not_enough_stock = true;
}
if ( $not_enough_stock ) {
$error->add( 'out-of-stock', sprintf(__( 'Sorry, we do not have enough "%s" in stock to fulfill your order right now. Please try again in %d minutes or edit your cart and try again. We apologise for any inconvenience caused.', 'woocommerce' ), $_product->get_title(), get_option( 'woocommerce_hold_stock_minutes' ) ) );
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return $error;
}
}
}
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return true;
}
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/**
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* Gets and formats a list of cart item data + variations for display on the frontend.
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*
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* @access public
* @param array $cart_item
* @param bool $flat (default: false)
* @return string
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*/
public function get_item_data( $cart_item, $flat = false ) {
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$item_data = array();
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// Variation data
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if ( ! empty( $cart_item['data']->variation_id ) && is_array( $cart_item['variation'] ) ) {
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$variation_list = array();
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foreach ( $cart_item['variation'] as $name => $value ) {
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if ( '' === $value )
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continue;
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$taxonomy = wc_attribute_taxonomy_name( str_replace( 'attribute_pa_', '', urldecode( $name ) ) );
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// If this is a term slug, get the term's nice name
if ( taxonomy_exists( $taxonomy ) ) {
$term = get_term_by( 'slug', $value, $taxonomy );
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if ( ! is_wp_error( $term ) && $term && $term->name ) {
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$value = $term->name;
}
$label = wc_attribute_label( $taxonomy );
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// If this is a custom option slug, get the options name
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} else {
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$value = apply_filters( 'woocommerce_variation_option_name', $value );
$product_attributes = $cart_item['data']->get_attributes();
if ( isset( $product_attributes[ str_replace( 'attribute_', '', $name ) ] ) ) {
$label = wc_attribute_label( $product_attributes[ str_replace( 'attribute_', '', $name ) ]['name'] );
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} else {
$label = $name;
}
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}
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$item_data[] = array(
'key' => $label,
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'value' => $value
);
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}
}
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// Other data - returned as array with name/value values
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$other_data = apply_filters( 'woocommerce_get_item_data', array(), $cart_item );
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if ( $other_data && is_array( $other_data ) && sizeof( $other_data ) > 0 ) {
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foreach ( $other_data as $data ) {
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// Set hidden to true to not display meta on cart.
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if ( empty( $data['hidden'] ) ) {
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$display_value = ! empty( $data['display'] ) ? $data['display'] : $data['value'];
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$item_data[] = array(
'key' => $data['name'],
'value' => $display_value
);
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}
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}
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}
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// Output flat or in list format
if ( sizeof( $item_data ) > 0 ) {
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ob_start();
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if ( $flat ) {
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foreach ( $item_data as $data ) {
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echo esc_html( $data['key'] ) . ': ' . wp_kses_post( $data['value'] ) . "\n";
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}
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} else {
wc_get_template( 'cart/cart-item-data.php', array( 'item_data' => $item_data ) );
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}
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return ob_get_clean();
}
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return '';
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}
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/**
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* Gets cross sells based on the items in the cart.
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*
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* @return array cross_sells (item ids)
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*/
public function get_cross_sells() {
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$cross_sells = array();
$in_cart = array();
if ( sizeof( $this->get_cart() ) > 0 ) {
foreach ( $this->get_cart() as $cart_item_key => $values ) {
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if ( $values['quantity'] > 0 ) {
$cross_sells = array_merge( $values['data']->get_cross_sells(), $cross_sells );
$in_cart[] = $values['product_id'];
}
}
}
$cross_sells = array_diff( $cross_sells, $in_cart );
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return $cross_sells;
}
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/**
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* Gets the url to the cart page.
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*
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* @return string url to page
*/
public function get_cart_url() {
$cart_page_id = wc_get_page_id( 'cart' );
return apply_filters( 'woocommerce_get_cart_url', $cart_page_id ? get_permalink( $cart_page_id ) : '' );
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}
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/**
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* Gets the url to the checkout page.
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*
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* @return string url to page
*/
public function get_checkout_url() {
$checkout_page_id = wc_get_page_id( 'checkout' );
$checkout_url = '';
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if ( $checkout_page_id ) {
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if ( is_ssl() || get_option('woocommerce_force_ssl_checkout') == 'yes' ) {
$checkout_url = str_replace( 'http:', 'https:', get_permalink( $checkout_page_id ) );
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} else {
$checkout_url = get_permalink( $checkout_page_id );
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}
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}
return apply_filters( 'woocommerce_get_checkout_url', $checkout_url );
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}
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/**
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* Gets the url to remove an item from the cart.
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*
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* @param string cart_item_key contains the id of the cart item
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* @return string url to page
*/
public function get_remove_url( $cart_item_key ) {
$cart_page_id = wc_get_page_id('cart');
return apply_filters( 'woocommerce_get_remove_url', $cart_page_id ? wp_nonce_url( add_query_arg( 'remove_item', $cart_item_key, get_permalink( $cart_page_id ) ), 'woocommerce-cart' ) : '' );
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}
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/**
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* Returns the contents of the cart in an array.
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*
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* @return array contents of the cart
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*/
public function get_cart() {
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return array_filter( (array) $this->cart_contents );
}
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/**
* Returns the contents of the cart in an array without the 'data' element.
*
* @return array contents of the cart
*/
private function get_cart_for_session() {
$cart_session = array();
if ( $this->get_cart() ) {
foreach ( $this->get_cart() as $key => $values ) {
$cart_session[ $key ] = $values;
unset( $cart_session[ $key ]['data'] ); // Unset product object
}
}
return $cart_session;
}
/**
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* Returns the cart and shipping taxes, merged.
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*
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* @return array merged taxes
*/
public function get_taxes() {
$taxes = array();
// Merge
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foreach ( array_keys( $this->taxes + $this->shipping_taxes ) as $key ) {
$taxes[ $key ] = ( isset( $this->shipping_taxes[ $key ] ) ? $this->shipping_taxes[ $key ] : 0 ) + ( isset( $this->taxes[ $key ] ) ? $this->taxes[ $key ] : 0 );
}
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return apply_filters( 'woocommerce_cart_get_taxes', $taxes, $this );
}
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/**
* Get taxes, merged by code, formatted ready for output.
*
* @access public
* @return array
*/
public function get_tax_totals() {
$taxes = $this->get_taxes();
$tax_totals = array();
foreach ( $taxes as $key => $tax ) {
$code = $this->tax->get_rate_code( $key );
if ( $code ) {
if ( ! isset( $tax_totals[ $code ] ) ) {
$tax_totals[ $code ] = new stdClass();
$tax_totals[ $code ]->amount = 0;
}
$tax_totals[ $code ]->tax_rate_id = $key;
$tax_totals[ $code ]->is_compound = $this->tax->is_compound( $key );
$tax_totals[ $code ]->label = $this->tax->get_rate_label( $key );
$tax_totals[ $code ]->amount += wc_round_tax_total( $tax );
$tax_totals[ $code ]->formatted_amount = wc_price( wc_round_tax_total( $tax_totals[ $code ]->amount ) );
}
}
return apply_filters( 'woocommerce_cart_tax_totals', $tax_totals, $this );
}
/*-----------------------------------------------------------------------------------*/
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/* Add to cart handling */
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/*-----------------------------------------------------------------------------------*/
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/**
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* Check if product is in the cart and return cart item key.
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*
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* Cart item key will be unique based on the item and its properties, such as variations.
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*
* @param mixed id of product to find in the cart
* @return string cart item key
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*/
public function find_product_in_cart( $cart_id = false ) {
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if ( $cart_id !== false ) {
if ( is_array( $this->cart_contents ) ) {
foreach ( $this->cart_contents as $cart_item_key => $cart_item ) {
if ( $cart_item_key == $cart_id ) {
return $cart_item_key;
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}
}
}
}
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return '';
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}
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/**
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* Generate a unique ID for the cart item being added.
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*
* @param int $product_id - id of the product the key is being generated for
* @param int $variation_id of the product the key is being generated for
* @param array $variation data for the cart item
* @param array $cart_item_data other cart item data passed which affects this items uniqueness in the cart
* @return string cart item key
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*/
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public function generate_cart_id( $product_id, $variation_id = 0, $variation = array(), $cart_item_data = array() ) {
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$id_parts = array( $product_id );
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if ( $variation_id && 0 != $variation_id )
$id_parts[] = $variation_id;
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if ( is_array( $variation ) && ! empty( $variation ) ) {
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$variation_key = '';
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foreach ( $variation as $key => $value ) {
$variation_key .= trim( $key ) . trim( $value );
}
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$id_parts[] = $variation_key;
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}
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if ( is_array( $cart_item_data ) && ! empty( $cart_item_data ) ) {
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$cart_item_data_key = '';
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foreach ( $cart_item_data as $key => $value ) {
if ( is_array( $value ) ) $value = http_build_query( $value );
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$cart_item_data_key .= trim($key) . trim($value);
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}
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$id_parts[] = $cart_item_data_key;
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}
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return md5( implode( '_', $id_parts ) );
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}
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/**
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* Add a product to the cart.
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*
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* @param string $product_id contains the id of the product to add to the cart
* @param string $quantity contains the quantity of the item to add
* @param int $variation_id
* @param array $variation attribute values
* @param array $cart_item_data extra cart item data we want to pass into the item
* @return string $cart_item_key
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*/
public function add_to_cart( $product_id, $quantity = 1, $variation_id = '', $variation = '', $cart_item_data = array() ) {
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if ( $quantity <= 0 ) {
return false;
}
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// Load cart item data - may be added by other plugins
$cart_item_data = (array) apply_filters( 'woocommerce_add_cart_item_data', $cart_item_data, $product_id, $variation_id );
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// Generate a ID based on product ID, variation ID, variation data, and other cart item data
$cart_id = $this->generate_cart_id( $product_id, $variation_id, $variation, $cart_item_data );
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// See if this product and its options is already in the cart
$cart_item_key = $this->find_product_in_cart( $cart_id );
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// Ensure we don't add a variation to the cart directly by variation ID
if ( 'product_variation' == get_post_type( $product_id ) ) {
$variation_id = $product_id;
$product_id = wp_get_post_parent_id( $variation_id );
}
// Get the product
$product_data = wc_get_product( $variation_id ? $variation_id : $product_id );
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if ( ! $product_data )
return false;
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// Force quantity to 1 if sold individually
if ( $product_data->is_sold_individually() )
$quantity = 1;
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// Check product is_purchasable
if ( ! $product_data->is_purchasable() ) {
wc_add_notice( __( 'Sorry, this product cannot be purchased.', 'woocommerce' ), 'error' );
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return false;
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}
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// Stock check - only check if we're managing stock and backorders are not allowed
if ( ! $product_data->is_in_stock() ) {
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wc_add_notice( sprintf( __( 'You cannot add &quot;%s&quot; to the cart because the product is out of stock.', 'woocommerce' ), $product_data->get_title() ), 'error' );
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return false;
} elseif ( ! $product_data->has_enough_stock( $quantity ) ) {
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wc_add_notice( sprintf(__( 'You cannot add that amount of &quot;%s&quot; to the cart because there is not enough stock (%s remaining).', 'woocommerce' ), $product_data->get_title(), $product_data->get_stock_quantity() ), 'error' );
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return false;
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}
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// Downloadable/virtual qty check
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if ( $product_data->is_sold_individually() ) {
$in_cart_quantity = $cart_item_key ? $this->cart_contents[ $cart_item_key ]['quantity'] : 0;
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// If it's greater than 0, it's already in the cart
if ( $in_cart_quantity > 0 ) {
wc_add_notice( sprintf(
'<a href="%s" class="button wc-forward">%s</a> %s',
$this->get_cart_url(),
__( 'View Cart', 'woocommerce' ),
sprintf( __( 'You cannot add another &quot;%s&quot; to your cart.', 'woocommerce' ), $product_data->get_title() )
), 'error' );
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return false;
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}
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}
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// Stock check - this time accounting for whats already in-cart
if ( $managing_stock = $product_data->managing_stock() ) {
$products_qty_in_cart = $this->get_cart_item_quantities();
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if ( $product_data->is_type( 'variation' ) && true === $managing_stock ) {
$check_qty = isset( $products_qty_in_cart[ $variation_id ] ) ? $products_qty_in_cart[ $variation_id ] : 0;
} else {
$check_qty = isset( $products_qty_in_cart[ $product_id ] ) ? $products_qty_in_cart[ $product_id ] : 0;
}
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/**
* Check stock based on all items in the cart
*/
if ( ! $product_data->has_enough_stock( $check_qty + $quantity ) ) {
wc_add_notice( sprintf(
'<a href="%s" class="button wc-forward">%s</a> %s',
$this->get_cart_url(),
__( 'View Cart', 'woocommerce' ),
sprintf( __( 'You cannot add that amount to the cart &mdash; we have %s in stock and you already have %s in your cart.', 'woocommerce' ), $product_data->get_stock_quantity(), $check_qty )
), 'error' );
return false;
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}
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}
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// If cart_item_key is set, the item is already in the cart
if ( $cart_item_key ) {
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$new_quantity = $quantity + $this->cart_contents[$cart_item_key]['quantity'];
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$this->set_quantity( $cart_item_key, $new_quantity, false );
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} else {
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$cart_item_key = $cart_id;
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// Add item after merging with $cart_item_data - hook to allow plugins to modify cart item
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$this->cart_contents[$cart_item_key] = apply_filters( 'woocommerce_add_cart_item', array_merge( $cart_item_data, array(
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'product_id' => $product_id,
'variation_id' => $variation_id,
'variation' => $variation,
'quantity' => $quantity,
'data' => $product_data
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) ), $cart_item_key );
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}
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if ( did_action( 'wp' ) ) {
$this->set_cart_cookies( sizeof( $this->cart_contents ) > 0 );
}
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do_action( 'woocommerce_add_to_cart', $cart_item_key, $product_id, $quantity, $variation_id, $variation, $cart_item_data );
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$this->calculate_totals();
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return $cart_item_key;
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}
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/**
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* Set the quantity for an item in the cart.
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*
* @param string cart_item_key contains the id of the cart item
* @param string quantity contains the quantity of the item
* @param boolean $refresh_totals whether or not to calculate totals after setting the new qty
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*/
public function set_quantity( $cart_item_key, $quantity = 1, $refresh_totals = true ) {
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if ( $quantity == 0 || $quantity < 0 ) {
do_action( 'woocommerce_before_cart_item_quantity_zero', $cart_item_key );
unset( $this->cart_contents[ $cart_item_key ] );
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} else {
$this->cart_contents[ $cart_item_key ]['quantity'] = $quantity;
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do_action( 'woocommerce_after_cart_item_quantity_update', $cart_item_key, $quantity );
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}
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if ( $refresh_totals ) {
$this->calculate_totals();
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}
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}
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/*-----------------------------------------------------------------------------------*/
/* Cart Calculation Functions */
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/*-----------------------------------------------------------------------------------*/
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/**
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* Reset cart totals and clear sessions.
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*
* @access private
* @return void
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*/
private function reset() {
foreach ( $this->cart_session_data as $key => $default ) {
$this->$key = $default;
unset( WC()->session->$key );
}
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}
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/**
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* Calculate totals for the items in the cart.
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*
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* @access public
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*/
public function calculate_totals() {
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$this->reset();
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do_action( 'woocommerce_before_calculate_totals', $this );
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if ( sizeof( $this->get_cart() ) == 0 ) {
$this->set_session();
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return;
}
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$tax_rates = array();
$shop_tax_rates = array();
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/**
* Calculate subtotals for items. This is done first so that discount logic can use the values.
*/
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foreach ( $this->get_cart() as $cart_item_key => $values ) {
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$_product = $values['data'];
// Count items + weight
$this->cart_contents_weight += $_product->get_weight() * $values['quantity'];
$this->cart_contents_count += $values['quantity'];
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// Prices
$base_price = $_product->get_price();
$line_price = $_product->get_price() * $values['quantity'];
$line_subtotal = 0;
$line_subtotal_tax = 0;
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/**
* No tax to calculate
*/
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if ( ! $_product->is_taxable() ) {
// Subtotal is the undiscounted price
$this->subtotal += $line_price;
$this->subtotal_ex_tax += $line_price;
/**
* Prices include tax
*
* To prevent rounding issues we need to work with the inclusive price where possible
* otherwise we'll see errors such as when working with a 9.99 inc price, 20% VAT which would
* be 8.325 leading to totals being 1p off
*
* Pre tax coupons come off the price the customer thinks they are paying - tax is calculated
* afterwards.
*
* e.g. $100 bike with $10 coupon = customer pays $90 and tax worked backwards from that
*/
} elseif ( $this->prices_include_tax ) {
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// Get base tax rates
if ( empty( $shop_tax_rates[ $_product->tax_class ] ) )
$shop_tax_rates[ $_product->tax_class ] = $this->tax->get_shop_base_rate( $_product->tax_class );
// Get item tax rates
if ( empty( $tax_rates[ $_product->get_tax_class() ] ) )
$tax_rates[ $_product->get_tax_class() ] = $this->tax->get_rates( $_product->get_tax_class() );
$base_tax_rates = $shop_tax_rates[ $_product->tax_class ];
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$item_tax_rates = $tax_rates[ $_product->get_tax_class() ];
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/**
* ADJUST TAX - Calculations when base tax is not equal to the item tax
*/
if ( $item_tax_rates !== $base_tax_rates ) {
// Work out a new base price without the shop's base tax
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$taxes = $this->tax->calc_tax( $line_price, $base_tax_rates, true, true );
// Now we have a new item price (excluding TAX)
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$line_subtotal = $line_price - array_sum( $taxes );
// Now add modifed taxes
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$tax_result = $this->tax->calc_tax( $line_subtotal, $item_tax_rates );
$line_subtotal_tax = array_sum( $tax_result );
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/**
* Regular tax calculation (customer inside base and the tax class is unmodified
*/
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} else {
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// Calc tax normally
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$taxes = $this->tax->calc_tax( $line_price, $item_tax_rates, true );
$line_subtotal_tax = array_sum( $taxes );
$line_subtotal = $line_price - array_sum( $taxes );
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}
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/**
* Prices exclude tax
*
* This calculation is simpler - work with the base, untaxed price.
*/
} else {
// Get item tax rates
if ( empty( $tax_rates[ $_product->get_tax_class() ] ) )
$tax_rates[ $_product->get_tax_class() ] = $this->tax->get_rates( $_product->get_tax_class() );
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$item_tax_rates = $tax_rates[ $_product->get_tax_class() ];
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// Base tax for line before discount - we will store this in the order data
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$taxes = $this->tax->calc_tax( $line_price, $item_tax_rates );
$line_subtotal_tax = array_sum( $taxes );
$line_subtotal = $line_price;
}
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// Add to main subtotal
$this->subtotal += $line_subtotal + $line_subtotal_tax;
$this->subtotal_ex_tax += $line_subtotal;
}
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/**
* Calculate totals for items
*/
foreach ( $this->get_cart() as $cart_item_key => $values ) {
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$_product = $values['data'];
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// Prices
$base_price = $_product->get_price();
$line_price = $_product->get_price() * $values['quantity'];
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// Tax data
$taxes = array();
$discounted_taxes = array();
/**
* No tax to calculate
*/
if ( ! $_product->is_taxable() ) {
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// Discounted Price (price with any pre-tax discounts applied)
$discounted_price = $this->get_discounted_price( $values, $base_price, true );
$discounted_tax_amount = 0;
$tax_amount = 0;
$line_subtotal_tax = 0;
$line_subtotal = $line_price;
$line_tax = 0;
$line_total = $this->tax->round( $discounted_price * $values['quantity'] );
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/**
* Prices include tax
*/
} elseif ( $this->prices_include_tax ) {
$base_tax_rates = $shop_tax_rates[ $_product->tax_class ];
$item_tax_rates = $tax_rates[ $_product->get_tax_class() ];
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/**
* ADJUST TAX - Calculations when base tax is not equal to the item tax
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*/
if ( $item_tax_rates !== $base_tax_rates ) {
// Work out a new base price without the shop's base tax
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$taxes = $this->tax->calc_tax( $line_price, $base_tax_rates, true, true );
// Now we have a new item price (excluding TAX)
$line_subtotal = round( $line_price - array_sum( $taxes ), WC_ROUNDING_PRECISION );
// Now add modifed taxes
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$taxes = $this->tax->calc_tax( $line_subtotal, $item_tax_rates );
$line_subtotal_tax = array_sum( $taxes );
// Adjusted price (this is the price including the new tax rate)
$adjusted_price = ( $line_subtotal + $line_subtotal_tax ) / $values['quantity'];
// Apply discounts
$discounted_price = $this->get_discounted_price( $values, $adjusted_price, true );
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$discounted_taxes = $this->tax->calc_tax( $discounted_price * $values['quantity'], $item_tax_rates, true );
$line_tax = array_sum( $discounted_taxes );
$line_total = ( $discounted_price * $values['quantity'] ) - $line_tax;
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/**
* Regular tax calculation (customer inside base and the tax class is unmodified
*/
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} else {
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// Work out a new base price without the shop's base tax
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$taxes = $this->tax->calc_tax( $line_price, $item_tax_rates, true );
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// Now we have a new item price (excluding TAX)
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$line_subtotal = $line_price - array_sum( $taxes );
$line_subtotal_tax = array_sum( $taxes );
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// Calc prices and tax (discounted)
$discounted_price = $this->get_discounted_price( $values, $base_price, true );
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$discounted_taxes = $this->tax->calc_tax( $discounted_price * $values['quantity'], $item_tax_rates, true );
$line_tax = array_sum( $discounted_taxes );
$line_total = ( $discounted_price * $values['quantity'] ) - $line_tax;
}
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// Tax rows - merge the totals we just got
foreach ( array_keys( $this->taxes + $discounted_taxes ) as $key ) {
$this->taxes[ $key ] = ( isset( $discounted_taxes[ $key ] ) ? $discounted_taxes[ $key ] : 0 ) + ( isset( $this->taxes[ $key ] ) ? $this->taxes[ $key ] : 0 );
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}
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/**
* Prices exclude tax
*/
} else {
$item_tax_rates = $tax_rates[ $_product->get_tax_class() ];
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// Work out a new base price without the shop's base tax
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$taxes = $this->tax->calc_tax( $line_price, $item_tax_rates );
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// Now we have the item price (excluding TAX)
$line_subtotal = $line_price;
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$line_subtotal_tax = array_sum( $taxes );
// Now calc product rates
$discounted_price = $this->get_discounted_price( $values, $base_price, true );
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$discounted_taxes = $this->tax->calc_tax( $discounted_price * $values['quantity'], $item_tax_rates );
$discounted_tax_amount = array_sum( $discounted_taxes );
$line_tax = $discounted_tax_amount;
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$line_total = $discounted_price * $values['quantity'];
// Tax rows - merge the totals we just got
foreach ( array_keys( $this->taxes + $discounted_taxes ) as $key ) {
$this->taxes[ $key ] = ( isset( $discounted_taxes[ $key ] ) ? $discounted_taxes[ $key ] : 0 ) + ( isset( $this->taxes[ $key ] ) ? $this->taxes[ $key ] : 0 );
}
}
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// Add any product discounts (after tax)
$this->apply_product_discounts_after_tax( $values, $line_total + $line_tax );
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// Cart contents total is based on discounted prices and is used for the final total calculation
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$this->cart_contents_total += $line_total;
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// Store costs + taxes for lines
$this->cart_contents[ $cart_item_key ]['line_total'] = $line_total;
$this->cart_contents[ $cart_item_key ]['line_tax'] = $line_tax;
$this->cart_contents[ $cart_item_key ]['line_subtotal'] = $line_subtotal;
$this->cart_contents[ $cart_item_key ]['line_subtotal_tax'] = $line_subtotal_tax;
// Store rates ID and costs - Since 2.2
$this->cart_contents[ $cart_item_key ]['line_tax_data'] = array( 'total' => $discounted_taxes, 'subtotal' => $taxes );
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}
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// Only calculate the grand total + shipping if on the cart/checkout
if ( is_checkout() || is_cart() || defined('WOOCOMMERCE_CHECKOUT') || defined('WOOCOMMERCE_CART') ) {
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// Calculate the Shipping
$this->calculate_shipping();
// Trigger the fees API where developers can add fees to the cart
$this->calculate_fees();
// Total up/round taxes and shipping taxes
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if ( $this->round_at_subtotal ) {
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$this->tax_total = $this->tax->get_tax_total( $this->taxes );
$this->shipping_tax_total = $this->tax->get_tax_total( $this->shipping_taxes );
$this->taxes = array_map( array( $this->tax, 'round' ), $this->taxes );
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$this->shipping_taxes = array_map( array( $this->tax, 'round' ), $this->shipping_taxes );
} else {
$this->tax_total = array_sum( $this->taxes );
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$this->shipping_tax_total = array_sum( $this->shipping_taxes );
}
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// VAT exemption done at this point - so all totals are correct before exemption
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if ( WC()->customer->is_vat_exempt() ) {
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$this->remove_taxes();
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}
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// Cart Discounts (after tax)
$this->apply_cart_discounts_after_tax();
// Allow plugins to hook and alter totals before final total is calculated
do_action( 'woocommerce_calculate_totals', $this );
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// Grand Total - Discounted product prices, discounted tax, shipping cost + tax, and any discounts to be added after tax (e.g. store credit)
$this->total = max( 0, apply_filters( 'woocommerce_calculated_total', round( $this->cart_contents_total + $this->tax_total + $this->shipping_tax_total + $this->shipping_total - $this->discount_total + $this->fee_total, $this->dp ), $this ) );
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} else {
// Set tax total to sum of all tax rows
$this->tax_total = $this->tax->get_tax_total( $this->taxes );
// VAT exemption done at this point - so all totals are correct before exemption
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if ( WC()->customer->is_vat_exempt() ) {
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$this->remove_taxes();
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}
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// Cart Discounts (after tax)
$this->apply_cart_discounts_after_tax();
}
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$this->set_session();
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}
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/**
* remove_taxes function.
*
* @access public
* @return void
*/
public function remove_taxes() {
$this->shipping_tax_total = $this->tax_total = 0;
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$this->subtotal = $this->subtotal_ex_tax;
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foreach ( $this->cart_contents as $cart_item_key => $item ) {
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$this->cart_contents[ $cart_item_key ]['line_subtotal_tax'] = $this->cart_contents[ $cart_item_key ]['line_tax'] = 0;
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}
// If true, zero rate is applied so '0' tax is displayed on the frontend rather than nothing.
if ( apply_filters( 'woocommerce_cart_remove_taxes_apply_zero_rate', true ) ) {
$this->taxes = $this->shipping_taxes = array( apply_filters( 'woocommerce_cart_remove_taxes_zero_rate_id', 'zero-rated' ) => 0 );
} else {
$this->taxes = $this->shipping_taxes = array();
}
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}
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/**
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* looks at the totals to see if payment is actually required.
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*
* @return bool
*/
public function needs_payment() {
return apply_filters( 'woocommerce_cart_needs_payment', $this->total > 0, $this );
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}
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/*-----------------------------------------------------------------------------------*/
/* Shipping related functions */
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/*-----------------------------------------------------------------------------------*/
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/**
* Uses the shipping class to calculate shipping then gets the totals when its finished.
*
* @access public
* @return void
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*/
public function calculate_shipping() {
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if ( $this->needs_shipping() && $this->show_shipping() ) {
WC()->shipping->calculate_shipping( $this->get_shipping_packages() );
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} else {
WC()->shipping->reset_shipping();
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}
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// Get totals for the chosen shipping method
$this->shipping_total = WC()->shipping->shipping_total; // Shipping Total
$this->shipping_taxes = WC()->shipping->shipping_taxes; // Shipping Taxes
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}
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/**
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* Get packages to calculate shipping for.
*
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* This lets us calculate costs for carts that are shipped to multiple locations.
*
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* Shipping methods are responsible for looping through these packages.
*
* By default we pass the cart itself as a package - plugins can change this
* through the filter and break it up.
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*
* @since 1.5.4
* @access public
* @return array of cart items
*/
public function get_shipping_packages() {
// Packages array for storing 'carts'
$packages = array();
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$packages[0]['contents'] = $this->get_cart(); // Items in the package
$packages[0]['contents_cost'] = 0; // Cost of items in the package, set below
$packages[0]['applied_coupons'] = $this->applied_coupons;
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$packages[0]['user']['ID'] = get_current_user_id();
$packages[0]['destination']['country'] = WC()->customer->get_shipping_country();
$packages[0]['destination']['state'] = WC()->customer->get_shipping_state();
$packages[0]['destination']['postcode'] = WC()->customer->get_shipping_postcode();
$packages[0]['destination']['city'] = WC()->customer->get_shipping_city();
$packages[0]['destination']['address'] = WC()->customer->get_shipping_address();
$packages[0]['destination']['address_2'] = WC()->customer->get_shipping_address_2();
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foreach ( $this->get_cart() as $item )
if ( $item['data']->needs_shipping() )
if ( isset( $item['line_total'] ) )
$packages[0]['contents_cost'] += $item['line_total'];
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return apply_filters( 'woocommerce_cart_shipping_packages', $packages );
}
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/**
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* Looks through the cart to see if shipping is actually required.
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*
* @return bool whether or not the cart needs shipping
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*/
public function needs_shipping() {
if ( get_option('woocommerce_calc_shipping') == 'no' )
return false;
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$needs_shipping = false;
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if ( $this->cart_contents ) {
foreach ( $this->cart_contents as $cart_item_key => $values ) {
$_product = $values['data'];
if ( $_product->needs_shipping() ) {
$needs_shipping = true;
}
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}
}
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return apply_filters( 'woocommerce_cart_needs_shipping', $needs_shipping );
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}
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/**
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* Should the shipping address form be shown
*
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* @return bool
*/
function needs_shipping_address() {
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$needs_shipping_address = false;
if ( $this->needs_shipping() === true && ! $this->ship_to_billing_address_only() ) {
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$needs_shipping_address = true;
}
return apply_filters( 'woocommerce_cart_needs_shipping_address', $needs_shipping_address );
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}
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/**
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* Sees if the customer has entered enough data to calc the shipping yet.
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*
* @return bool
*/
public function show_shipping() {
if ( get_option('woocommerce_calc_shipping') == 'no' || ! is_array( $this->cart_contents ) )
return false;
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if ( get_option( 'woocommerce_shipping_cost_requires_address' ) == 'yes' ) {
if ( ! WC()->customer->has_calculated_shipping() ) {
if ( ! WC()->customer->get_shipping_country() || ( ! WC()->customer->get_shipping_state() && ! WC()->customer->get_shipping_postcode() ) )
return false;
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}
}
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$show_shipping = true;
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return apply_filters( 'woocommerce_cart_ready_to_calc_shipping', $show_shipping );
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}
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/**
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* Sees if we need a shipping address.
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*
* @return bool
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*/
public function ship_to_billing_address_only() {
return wc_ship_to_billing_address_only();
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}
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/**
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* Gets the shipping total (after calculation).
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*
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* @return string price or string for the shipping total
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*/
public function get_cart_shipping_total() {
if ( isset( $this->shipping_total ) ) {
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if ( $this->shipping_total > 0 ) {
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// Display varies depending on settings
if ( $this->tax_display_cart == 'excl' ) {
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$return = wc_price( $this->shipping_total );
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if ( $this->shipping_tax_total > 0 && $this->prices_include_tax ) {
$return .= ' <small>' . WC()->countries->ex_tax_or_vat() . '</small>';
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}
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return $return;
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} else {
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$return = wc_price( $this->shipping_total + $this->shipping_tax_total );
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if ( $this->shipping_tax_total > 0 && ! $this->prices_include_tax ) {
$return .= ' <small>' . WC()->countries->inc_tax_or_vat() . '</small>';
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}
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return $return;
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}
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} else {
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return __( 'Free!', 'woocommerce' );
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}
}
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return '';
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}
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/*-----------------------------------------------------------------------------------*/
/* Coupons/Discount related functions */
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/*-----------------------------------------------------------------------------------*/
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/**
* Check for user coupons (now that we have billing email). If a coupon is invalid, add an error.
*
* Checks two types of coupons:
* 1. Where a list of customer emails are set (limits coupon usage to those defined)
* 2. Where a usage_limit_per_user is set (limits coupon usage to a number based on user ID and email)
*
* @access public
* @param array $posted
*/
public function check_customer_coupons( $posted ) {
if ( ! empty( $this->applied_coupons ) ) {
foreach ( $this->applied_coupons as $code ) {
$coupon = new WC_Coupon( $code );
if ( $coupon->is_valid() ) {
// Limit to defined email addresses
if ( is_array( $coupon->customer_email ) && sizeof( $coupon->customer_email ) > 0 ) {
$check_emails = array();
$coupon->customer_email = array_map( 'sanitize_email', $coupon->customer_email );
if ( is_user_logged_in() ) {
$current_user = wp_get_current_user();
$check_emails[] = $current_user->user_email;
}
$check_emails[] = $posted['billing_email'];
$check_emails = array_map( 'sanitize_email', array_map( 'strtolower', $check_emails ) );
if ( 0 == sizeof( array_intersect( $check_emails, $coupon->customer_email ) ) ) {
$coupon->add_coupon_message( WC_Coupon::E_WC_COUPON_NOT_YOURS_REMOVED );
// Remove the coupon
$this->remove_coupon( $code );
// Flag totals for refresh
WC()->session->set( 'refresh_totals', true );
}
}
// Usage limits per user - check against billing and user email and user ID
if ( $coupon->usage_limit_per_user > 0 ) {
$check_emails = array();
$used_by = array_filter( (array) get_post_meta( $coupon->id, '_used_by' ) );
if ( is_user_logged_in() ) {
$current_user = wp_get_current_user();
$check_emails[] = sanitize_email( $current_user->user_email );
$usage_count = sizeof( array_keys( $used_by, get_current_user_id() ) );
} else {
$check_emails[] = sanitize_email( $posted['billing_email'] );
$user = get_user_by( 'email', $posted['billing_email'] );
if ( $user ) {
$usage_count = sizeof( array_keys( $used_by, $user->ID ) );
} else {
$usage_count = 0;
}
}
foreach ( $check_emails as $check_email ) {
$usage_count = $usage_count + sizeof( array_keys( $used_by, $check_email ) );
}
if ( $usage_count >= $coupon->usage_limit_per_user ) {
$coupon->add_coupon_message( WC_Coupon::E_WC_COUPON_USAGE_LIMIT_REACHED );
// Remove the coupon
$this->remove_coupon( $code );
// Flag totals for refresh
WC()->session->set( 'refresh_totals', true );
}
}
}
}
}
}
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/**
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* Returns whether or not a discount has been applied.
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*
* @return bool
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*/
public function has_discount( $coupon_code ) {
return in_array( apply_filters( 'woocommerce_coupon_code', $coupon_code ), $this->applied_coupons );
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}
/**
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* Applies a coupon code passed to the method.
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*
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* @param string $coupon_code - The code to apply
* @return bool True if the coupon is applied, false if it does not exist or cannot be applied
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*/
public function add_discount( $coupon_code ) {
// Coupons are globally disabled
if ( ! $this->coupons_enabled() )
return false;
// Sanitize coupon code
$coupon_code = apply_filters( 'woocommerce_coupon_code', $coupon_code );
// Get the coupon
$the_coupon = new WC_Coupon( $coupon_code );
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if ( $the_coupon->id ) {
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// Check it can be used with cart
if ( ! $the_coupon->is_valid() ) {
wc_add_notice( $the_coupon->get_error_message(), 'error' );
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return false;
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}
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// Check if applied
if ( $this->has_discount( $coupon_code ) ) {
$the_coupon->add_coupon_message( WC_Coupon::E_WC_COUPON_ALREADY_APPLIED );
return false;
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}
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// If its individual use then remove other coupons
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if ( $the_coupon->individual_use == 'yes' ) {
$this->applied_coupons = apply_filters( 'woocommerce_apply_individual_use_coupon', array(), $the_coupon, $this->applied_coupons );
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}
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if ( $this->applied_coupons ) {
foreach ( $this->applied_coupons as $code ) {
$coupon = new WC_Coupon( $code );
if ( $coupon->individual_use == 'yes' && false === apply_filters( 'woocommerce_apply_with_individual_use_coupon', false, $the_coupon, $coupon, $this->applied_coupons ) ) {
// Reject new coupon
$coupon->add_coupon_message( WC_Coupon::E_WC_COUPON_ALREADY_APPLIED_INDIV_USE_ONLY );
return false;
}
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}
}
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$this->applied_coupons[] = $coupon_code;
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// Choose free shipping
if ( $the_coupon->enable_free_shipping() ) {
$packages = WC()->shipping->get_packages();
$chosen_shipping_methods = WC()->session->get( 'chosen_shipping_methods' );
foreach ( $packages as $i => $package ) {
$chosen_shipping_methods[ $i ] = 'free_shipping';
}
WC()->session->set( 'chosen_shipping_methods', $chosen_shipping_methods );
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}
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$this->calculate_totals();
$the_coupon->add_coupon_message( WC_Coupon::WC_COUPON_SUCCESS );
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do_action( 'woocommerce_applied_coupon', $coupon_code );
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return true;
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} else {
$the_coupon->add_coupon_message( WC_Coupon::E_WC_COUPON_NOT_EXIST );
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return false;
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}
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return false;
}
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/**
* Get array of applied coupon objects and codes.
* @param string Type of coupons to get. Can be 'cart' or 'order' which are before and after tax respectively.
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* @return array of applied coupons
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*/
public function get_coupons( $type = null ) {
$coupons = array();
if ( 'cart' == $type || is_null( $type ) ) {
if ( $this->applied_coupons ) {
foreach ( $this->applied_coupons as $code ) {
$coupon = new WC_Coupon( $code );
if ( $coupon->apply_before_tax() )
$coupons[ $code ] = $coupon;
}
}
}
if ( 'order' == $type || is_null( $type ) ) {
if ( $this->applied_coupons ) {
foreach ( $this->applied_coupons as $code ) {
$coupon = new WC_Coupon( $code );
if ( ! $coupon->apply_before_tax() )
$coupons[ $code ] = $coupon;
}
}
}
return $coupons;
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}
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/**
* Gets the array of applied coupon codes.
*
* @return array of applied coupons
*/
public function get_applied_coupons() {
return $this->applied_coupons;
}
/**
* Get the discount amount for a used coupon
* @param string $code coupon code
* @return float discount amount
*/
public function get_coupon_discount_amount( $code ) {
return isset( $this->coupon_discount_amounts[ $code ] ) ? $this->coupon_discount_amounts[ $code ] : 0;
}
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/**
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* Remove coupons from the cart of a defined type. Type 1 is before tax, type 2 is after tax.
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*
* @params string type - cart for before tax, order for after tax
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*/
public function remove_coupons( $type = null ) {
if ( 'cart' == $type || 1 == $type ) {
if ( $this->applied_coupons ) {
foreach ( $this->applied_coupons as $code ) {
$coupon = new WC_Coupon( $code );
if ( $coupon->apply_before_tax() )
$this->remove_coupon( $code );
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}
}
} elseif ( 'order' == $type || 2 == $type ) {
if ( $this->applied_coupons ) {
foreach ( $this->applied_coupons as $code ) {
$coupon = new WC_Coupon( $code );
if ( ! $coupon->apply_before_tax() )
$this->remove_coupon( $code );
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}
}
} else {
$this->applied_coupons = $this->coupon_discount_amounts = $this->coupon_applied_count = array();
WC()->session->set( 'applied_coupons', array() );
WC()->session->set( 'coupon_discount_amounts', array() );
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}
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}
/**
* Remove a single coupon by code
* @param string $coupon_code Code of the coupon to remove
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* @return bool
*/
public function remove_coupon( $coupon_code ) {
// Coupons are globally disabled
if ( ! $this->coupons_enabled() )
return false;
// Get the coupon
$coupon_code = apply_filters( 'woocommerce_coupon_code', $coupon_code );
$position = array_search( $coupon_code, $this->applied_coupons );
if ( $position !== false )
unset( $this->applied_coupons[ $position ] );
WC()->session->set( 'applied_coupons', $this->applied_coupons );
return true;
}
/**
* Function to apply discounts to a product and get the discounted price (before tax is applied).
*
* @access public
* @param mixed $values
* @param mixed $price
* @param bool $add_totals (default: false)
* @return float price
*/
public function get_discounted_price( $values, $price, $add_totals = false ) {
if ( ! $price )
return $price;
if ( ! empty( $this->applied_coupons ) ) {
foreach ( $this->applied_coupons as $code ) {
$coupon = new WC_Coupon( $code );
if ( $coupon->apply_before_tax() && $coupon->is_valid() ) {
if ( $coupon->is_valid_for_product( $values['data'] ) || $coupon->is_valid_for_cart() ) {
$discount_amount = $coupon->get_discount_amount( $price, $values, $single = true );
$price = max( $price - $discount_amount, 0 );
if ( $add_totals ) {
$this->discount_cart += $discount_amount * $values['quantity'];
$this->increase_coupon_discount_amount( $code, $discount_amount * $values['quantity'] );
$this->increase_coupon_applied_count( $code, $values['quantity'] );
}
}
}
}
}
return apply_filters( 'woocommerce_get_discounted_price', $price, $values, $this );
}
/**
* Function to apply cart discounts after tax.
*
* @access public
*/
public function apply_cart_discounts_after_tax() {
$pre_discount_total = round( $this->cart_contents_total + $this->tax_total + $this->shipping_tax_total + $this->shipping_total + $this->fee_total, $this->dp );
if ( $this->applied_coupons ) {
foreach ( $this->applied_coupons as $code ) {
$coupon = new WC_Coupon( $code );
do_action( 'woocommerce_cart_discount_after_tax_' . $coupon->type, $coupon );
if ( $coupon->is_valid() && ! $coupon->apply_before_tax() && $coupon->is_valid_for_cart() ) {
$discount_amount = $coupon->get_discount_amount( $pre_discount_total );
$pre_discount_total = $pre_discount_total - $discount_amount;
$this->discount_total += $discount_amount;
$this->increase_coupon_discount_amount( $code, $discount_amount );
$this->increase_coupon_applied_count( $code );
}
}
}
}
/**
* Function to apply product discounts after tax.
*
* @access public
* @param mixed $values
* @param mixed $price
*/
public function apply_product_discounts_after_tax( $values, $price ) {
if ( ! empty( $this->applied_coupons ) ) {
foreach ( $this->applied_coupons as $code ) {
$coupon = new WC_Coupon( $code );
do_action( 'woocommerce_product_discount_after_tax_' . $coupon->type, $coupon, $values, $price );
if ( $coupon->is_valid() && ! $coupon->apply_before_tax() && $coupon->is_valid_for_product( $values['data'] ) ) {
$discount_amount = $coupon->get_discount_amount( $price, $values );
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$this->discount_total += $discount_amount;
$this->increase_coupon_discount_amount( $code, $discount_amount );
$this->increase_coupon_applied_count( $code, $values['quantity'] );
}
}
}
}
/**
* Store how much discount each coupon grants.
*
* @access private
* @param mixed $code
* @param mixed $amount
*/
private function increase_coupon_discount_amount( $code, $amount ) {
if ( empty( $this->coupon_discount_amounts[ $code ] ) )
$this->coupon_discount_amounts[ $code ] = 0;
$this->coupon_discount_amounts[ $code ] += $amount;
}
/**
* Store how many times each coupon is applied to cart/items
*
* @access private
* @param mixed $code
* @param mixed $amount
*/
private function increase_coupon_applied_count( $code, $count = 1 ) {
if ( empty( $this->coupon_applied_count[ $code ] ) )
$this->coupon_applied_count[ $code ] = 0;
$this->coupon_applied_count[ $code ] += $count;
}
/*-----------------------------------------------------------------------------------*/
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/* Fees API to add additional costs to orders */
/*-----------------------------------------------------------------------------------*/
/**
* add_fee function.
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*
* @param mixed $name
* @param mixed $amount
* @param bool $taxable (default: false)
* @param string $tax_class (default: '')
*/
public function add_fee( $name, $amount, $taxable = false, $tax_class = '' ) {
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$new_fee_id = sanitize_title( $name );
// Only add each fee once
foreach ( $this->fees as $fee ) {
if ( $fee->id == $new_fee_id ) {
return;
}
}
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$new_fee = new stdClass();
$new_fee->id = $new_fee_id;
$new_fee->name = esc_attr( $name );
$new_fee->amount = (float) esc_attr( $amount );
$new_fee->tax_class = $tax_class;
$new_fee->taxable = $taxable ? true : false;
$new_fee->tax = 0;
$new_fee->tax_data = array();
$this->fees[] = $new_fee;
}
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/**
* get_fees function.
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*
* @access public
* @return array
*/
public function get_fees() {
return array_filter( (array) $this->fees );
}
/**
* Calculate fees
*/
public function calculate_fees() {
// Fire an action where developers can add their fees
do_action( 'woocommerce_cart_calculate_fees', $this );
// If fees were added, total them and calculate tax
if ( ! empty( $this->fees ) ) {
foreach ( $this->fees as $fee_key => $fee ) {
$this->fee_total += $fee->amount;
if ( $fee->taxable ) {
// Get tax rates
$tax_rates = $this->tax->get_rates( $fee->tax_class );
$fee_taxes = $this->tax->calc_tax( $fee->amount, $tax_rates, false );
if ( ! empty( $fee_taxes ) ) {
// Set the tax total for this fee
$this->fees[ $fee_key ]->tax = array_sum( $fee_taxes );
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// Set tax data - Since 2.2
$this->fees[ $fee_key ]->tax_data = $fee_taxes;
// Tax rows - merge the totals we just got
foreach ( array_keys( $this->taxes + $fee_taxes ) as $key ) {
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$this->taxes[ $key ] = ( isset( $fee_taxes[ $key ] ) ? $fee_taxes[ $key ] : 0 ) + ( isset( $this->taxes[ $key ] ) ? $this->taxes[ $key ] : 0 );
}
}
}
}
}
}
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/*-----------------------------------------------------------------------------------*/
/* Get Formatted Totals */
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/*-----------------------------------------------------------------------------------*/
/**
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* Get the total of all order discounts (after tax discounts).
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*
* @return float
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*/
public function get_order_discount_total() {
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return $this->discount_total;
}
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/**
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* Get the total of all cart discounts (before tax discounts).
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*
* @return float
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*/
public function get_cart_discount_total() {
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return $this->discount_cart;
}
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/**
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* Gets the order total (after calculation).
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*
* @return string formatted price
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*/
public function get_total() {
return apply_filters( 'woocommerce_cart_total', wc_price( $this->total ) );
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}
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/**
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* Gets the total excluding taxes.
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*
* @return string formatted price
*/
public function get_total_ex_tax() {
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$total = $this->total - $this->tax_total - $this->shipping_tax_total;
if ( $total < 0 )
$total = 0;
return apply_filters( 'woocommerce_cart_total_ex_tax', wc_price( $total ) );
}
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/**
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* Gets the cart contents total (after calculation).
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*
* @return string formatted price
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*/
public function get_cart_total() {
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if ( ! $this->prices_include_tax ) {
$cart_contents_total = wc_price( $this->cart_contents_total );
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} else {
$cart_contents_total = wc_price( $this->cart_contents_total + $this->tax_total );
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}
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return apply_filters( 'woocommerce_cart_contents_total', $cart_contents_total );
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}
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/**
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* Gets the sub total (after calculation).
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*
* @params bool whether to include compound taxes
* @return string formatted price
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*/
public function get_cart_subtotal( $compound = false ) {
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// If the cart has compound tax, we want to show the subtotal as
// cart + shipping + non-compound taxes (after discount)
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if ( $compound ) {
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$cart_subtotal = wc_price( $this->cart_contents_total + $this->shipping_total + $this->get_taxes_total( false, false ) );
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// Otherwise we show cart items totals only (before discount)
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} else {
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// Display varies depending on settings
if ( $this->tax_display_cart == 'excl' ) {
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$cart_subtotal = wc_price( $this->subtotal_ex_tax );
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if ( $this->tax_total > 0 && $this->prices_include_tax ) {
$cart_subtotal .= ' <small>' . WC()->countries->ex_tax_or_vat() . '</small>';
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}
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} else {
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$cart_subtotal = wc_price( $this->subtotal );
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if ( $this->tax_total > 0 && !$this->prices_include_tax ) {
$cart_subtotal .= ' <small>' . WC()->countries->inc_tax_or_vat() . '</small>';
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}
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}
}
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return apply_filters( 'woocommerce_cart_subtotal', $cart_subtotal, $compound, $this );
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}
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/**
* Get the product row price per item.
*
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* @param WC_Product $_product
* @return string formatted price
*/
public function get_product_price( $_product ) {
if ( $this->tax_display_cart == 'excl' )
$product_price = $_product->get_price_excluding_tax();
else
$product_price = $_product->get_price_including_tax();
return apply_filters( 'woocommerce_cart_product_price', wc_price( $product_price ), $_product );
}
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/**
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* Get the product row subtotal.
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*
* Gets the tax etc to avoid rounding issues.
*
* When on the checkout (review order), this will get the subtotal based on the customer's tax rate rather than the base rate
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*
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* @param WC_Product $_product
* @param int quantity
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* @return string formatted price
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*/
public function get_product_subtotal( $_product, $quantity ) {
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$price = $_product->get_price();
$taxable = $_product->is_taxable();
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// Taxable
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if ( $taxable ) {
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if ( $this->tax_display_cart == 'excl' ) {
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$row_price = $_product->get_price_excluding_tax( $quantity );
$product_subtotal = wc_price( $row_price );
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if ( $this->prices_include_tax && $this->tax_total > 0 ) {
$product_subtotal .= ' <small class="tax_label">' . WC()->countries->ex_tax_or_vat() . '</small>';
}
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} else {
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$row_price = $_product->get_price_including_tax( $quantity );
$product_subtotal = wc_price( $row_price );
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if ( ! $this->prices_include_tax && $this->tax_total > 0 ) {
$product_subtotal .= ' <small class="tax_label">' . WC()->countries->inc_tax_or_vat() . '</small>';
}
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}
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// Non-taxable
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} else {
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$row_price = $price * $quantity;
$product_subtotal = wc_price( $row_price );
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}
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return apply_filters( 'woocommerce_cart_product_subtotal', $product_subtotal, $_product, $quantity, $this );
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}
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/**
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* Gets the cart tax (after calculation).
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*
* @return string formatted price
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*/
public function get_cart_tax() {
$cart_total_tax = wc_round_tax_total( $this->tax_total + $this->shipping_tax_total );
return apply_filters( 'woocommerce_get_cart_tax', $cart_total_tax ? wc_price( $cart_total_tax ) : '' );
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}
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/**
* Get a tax amount
* @param string $tax_rate_id
* @return float amount
*/
public function get_tax_amount( $tax_rate_id ) {
return isset( $this->taxes[ $tax_rate_id ] ) ? $this->taxes[ $tax_rate_id ] : 0;
}
/**
* Get a tax amount
* @param string $tax_rate_id
* @return float amount
*/
public function get_shipping_tax_amount( $tax_rate_id ) {
return isset( $this->shipping_taxes[ $tax_rate_id ] ) ? $this->shipping_taxes[ $tax_rate_id ] : 0;
}
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/**
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* Get tax row amounts with or without compound taxes includes.
*
* @param boolean $compound True if getting compound taxes
* @param boolean $display True if getting total to display
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* @return float price
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*/
public function get_taxes_total( $compound = true, $display = true ) {
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$total = 0;
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foreach ( $this->taxes as $key => $tax ) {
if ( ! $compound && $this->tax->is_compound( $key ) ) continue;
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$total += $tax;
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}
foreach ( $this->shipping_taxes as $key => $tax ) {
if ( ! $compound && $this->tax->is_compound( $key ) ) continue;
$total += $tax;
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}
if ( $display ) {
$total = wc_round_tax_total( $total );
}
return apply_filters( 'woocommerce_cart_taxes_total', $total, $compound, $display, $this );
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}
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/**
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* Gets the total (product) discount amount - these are applied before tax.
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*
* @return mixed formatted price or false if there are none
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*/
public function get_discounts_before_tax() {
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if ( $this->discount_cart ) {
$discounts_before_tax = wc_price( $this->discount_cart );
} else {
$discounts_before_tax = false;
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}
return apply_filters( 'woocommerce_cart_discounts_before_tax', $discounts_before_tax, $this );
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}
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/**
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* Gets the order discount amount - these are applied after tax.
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*
* @return mixed formatted price or false if there are none
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*/
public function get_discounts_after_tax() {
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if ( $this->discount_total ) {
$discounts_after_tax = wc_price( $this->discount_total );
} else {
$discounts_after_tax = false;
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}
return apply_filters( 'woocommerce_cart_discounts_after_tax', $discounts_after_tax, $this );
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}
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/**
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* Gets the total discount amount - both kinds.
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*
* @return mixed formatted price or false if there are none
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*/
public function get_total_discount() {
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if ( $this->discount_total || $this->discount_cart ) {
$total_discount = wc_price( $this->discount_total + $this->discount_cart );
} else {
$total_discount = false;
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}
return apply_filters( 'woocommerce_cart_total_discount', $total_discount, $this );
}
}