woocommerce/classes/coupons.class.php

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<?php
/**
* WooCommerce coupons
*
* The WooCommerce coupons class gets coupon data from storage
*
* @class woocommerce_coupon
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* @package WooCommerce
* @category Class
* @author WooThemes
*/
class woocommerce_coupon {
var $code;
var $id;
var $type;
var $amount;
var $individual_use;
var $product_ids;
var $usage_limit;
var $usage_count;
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var $expiry_date;
var $apply_before_tax;
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var $free_shipping;
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/** get coupon with $code */
function woocommerce_coupon( $code ) {
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$this->code = $code;
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$coupon = get_page_by_title( $this->code, 'OBJECT', 'shop_coupon' );
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if ($coupon && $coupon->post_status == 'publish') :
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$this->id = $coupon->ID;
$this->type = get_post_meta($coupon->ID, 'discount_type', true);
$this->amount = get_post_meta($coupon->ID, 'coupon_amount', true);
$this->individual_use = get_post_meta($coupon->ID, 'individual_use', true);
$this->product_ids = array_filter(array_map('trim', explode(',', get_post_meta($coupon->ID, 'product_ids', true))));
$this->exclude_product_ids = array_filter(array_map('trim', explode(',', get_post_meta($coupon->ID, 'exclude_product_ids', true))));
$this->usage_limit = get_post_meta($coupon->ID, 'usage_limit', true);
$this->usage_count = (int) get_post_meta($coupon->ID, 'usage_count', true);
$this->expiry_date = ($expires = get_post_meta($coupon->ID, 'expiry_date', true)) ? strtotime($expires) : '';
$this->apply_before_tax = get_post_meta($coupon->ID, 'apply_before_tax', true);
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$this->free_shipping = get_post_meta($coupon->ID, 'free_shipping', true);
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return true;
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endif;
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return false;
}
/** Check if coupon needs applying before tax **/
function apply_before_tax() {
if ($this->apply_before_tax=='yes') return true; else return false;
}
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function enable_free_shipping() {
if ($this->free_shipping=='yes') return true; else return false;
}
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/** Increase usage count */
function inc_usage_count() {
$this->usage_count++;
update_post_meta($this->id, 'usage_count', $this->usage_count);
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}
/** Check coupon is valid */
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function is_valid() {
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global $woocommerce;
if ($this->id) :
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if ($this->usage_limit>0) :
if ($this->usage_count>$this->usage_limit) :
return false;
endif;
endif;
if ($this->expiry_date) :
if (strtotime('NOW')>$this->expiry_date) :
return false;
endif;
endif;
// Product ids - If a product included is found in the cart then its valid
if (sizeof( $this->product_ids )>0) :
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$valid = false;
if (sizeof($woocommerce->cart->get_cart())>0) : foreach ($woocommerce->cart->get_cart() as $cart_item_key => $cart_item) :
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if (in_array($cart_item['product_id'], $this->product_ids) || in_array($cart_item['variation_id'], $this->product_ids)) :
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$valid = true;
endif;
endforeach; endif;
if (!$valid) return false;
endif;
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// Cart discounts cannot be added if non-eligble product is found in cart
if ($this->type!='fixed_product' && $this->type!='percent_product') :
if (sizeof( $this->exclude_product_ids )>0) :
$valid = true;
if (sizeof($woocommerce->cart->get_cart())>0) : foreach ($woocommerce->cart->get_cart() as $cart_item_key => $cart_item) :
if (in_array($cart_item['product_id'], $this->exclude_product_ids) || in_array($cart_item['variation_id'], $this->exclude_product_ids)) :
$valid = false;
endif;
endforeach; endif;
if (!$valid) return false;
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endif;
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endif;
$valid = apply_filters('woocommerce_coupon_is_valid', true, $this);
if (!$valid) return false;
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return true;
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endif;
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return false;
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}
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}