3×2 Offer Product Discount

/**
 * Snippet Name:     WooCommerce Offer Product Discount
 * Snippet Author:   coding-bunny.com
 * Description:      Automatic 3x2 offer system that applies "Buy 2, Get 1 Free" discount.
 * Version:          1.0.0
 */

class CBOPD_WC_Offer_Product_Discount {
    
    public function __construct() {
        add_action('woocommerce_cart_calculate_fees', array($this, 'cbopd_apply_3x2_discount'));
    }
    
    public function cbopd_apply_3x2_discount() {
        if (is_admin() && !defined('DOING_AJAX') || !WC()->cart->get_cart_contents_count()) {
            return;
        }
        
        $cart_items = WC()->cart->get_cart();
        $product_prices = array();
        
        foreach ($cart_items as $cart_item_key => $cart_item) {
            $product_price = $cart_item['data']->get_price();
            $quantity = $cart_item['quantity'];
            
            for ($i = 0; $i < $quantity; $i++) {
                $product_prices[] = floatval($product_price);
            }
        }
        
        if (count($product_prices) < 3) {
            return;
        }
        
        rsort($product_prices);
        
        $free_items = floor(count($product_prices) / 3);
        $total_discount = 0;
        
        for ($i = 0; $i < $free_items; $i++) {
            $index = ($i * 3) + 2;
            if (isset($product_prices[$index])) {
                $total_discount += $product_prices[$index];
            }
        }
        
        if ($total_discount > 0) {
            WC()->cart->add_fee(__('3x2 Offer Discount', 'woocommerce'), -$total_discount);
        }
    }
}

if (class_exists('WooCommerce')) {
    new CBOPD_WC_Offer_Product_Discount();
}
?>

/**
 * Snippet Name:     WooCommerce Offer Product Discount
 * Snippet Author:   coding-bunny.com
 * Description:      Automatic 3x2 offer system that applies "Buy 2, Get 1 Free" discount.
 * Version:          1.0.0
 */

class CBOPD_WC_Offer_Product_Discount {
    
    public function __construct() {
        add_action('woocommerce_cart_calculate_fees', array($this, 'cbopd_apply_3x2_discount'));
    }
    
    public function cbopd_apply_3x2_discount() {
        if (is_admin() && !defined('DOING_AJAX') || !WC()->cart->get_cart_contents_count()) {
            return;
        }
        
        $cart_items = WC()->cart->get_cart();
        $product_prices = array();
        
        foreach ($cart_items as $cart_item_key => $cart_item) {
            $product_price = $cart_item['data']->get_price();
            $quantity = $cart_item['quantity'];
            
            for ($i = 0; $i < $quantity; $i++) {
                $product_prices[] = floatval($product_price);
            }
        }
        
        if (count($product_prices) < 3) {
            return;
        }
        
        rsort($product_prices);
        
        $free_items = floor(count($product_prices) / 3);
        $total_discount = 0;
        
        for ($i = 0; $i < $free_items; $i++) {
            $index = ($i * 3) + 2;
            if (isset($product_prices[$index])) {
                $total_discount += $product_prices[$index];
            }
        }
        
        if ($total_discount > 0) {
            WC()->cart->add_fee(__('3x2 Offer Discount', 'woocommerce'), -$total_discount);
        }
    }
}

if (class_exists('WooCommerce')) {
    new CBOPD_WC_Offer_Product_Discount();
}
?>