Add to cart button with discount price for variable product

Add to cart button with discount price for variable product

add_filter( 'woocommerce_product_single_add_to_cart_text', 'custom_add_to_cart_price', 20, 2 ); // Single product pages
function custom_add_to_cart_price( $button_text, $product ) {
    /**
     * Get the discount details of given product with custom price
     * @param $price float/integer
     * @param $product object (Product object Example: wc_get_product($product_id))
     * @param $quantity int
     * @param $customPrice float/integer (0 for calculate discount from product price)
     * @param $returnDetails string (Default value 'discounted_price' accepted values = 'discounted_price','all')
     * @param $manualRequest boolean (Default value false: pass this as true for get discount even if there is no item in cart)
     * @param $isCart boolean (Default value true)
     * @return array|float|int - if product has no discounts, returns $price;else return array of discount details based on $return_details
     */
    $price = $product -> get_price();
    $productId = $product -> get_id();
    $quantity = 1;
    $customPrice = 0;
    $returnDetails = 'discounted_price';
    $manualRequest = true;
    $isCart = false;

    if ( $product-> is_type('woosb') ) { // WPC Bundle
        return $button_text;
    } else if( $product-> is_type('variable') ) { // Variable products
        $priceMin = $product -> get_variation_price( 'min', false );
        $priceMax = $product -> get_variation_price( 'max', false );

        $variationDiscountMin = apply_filters('advanced_woo_discount_rules_get_product_discount_price_from_custom_price', $priceMin, $product, $quantity, $customPrice, $returnDetails, $manualRequest, $isCart);
        $variationDiscountMax = apply_filters('advanced_woo_discount_rules_get_product_discount_price_from_custom_price', $priceMax, $product, $quantity, $priceMax, $returnDetails, $manualRequest, $isCart);
//        var_dump (  apply_filters('advanced_woo_discount_rules_get_product_discount_price_from_custom_price', $priceMax, $productId, $quantity, $customPrice, 'all', $manualRequest, $isCart) );

        if ( $variationDiscountMin !== false ){ // On Sale
            if ($variationDiscountMin != $variationDiscountMax) { // Ranged Price
                return $button_text . ' - (' . strip_tags( wc_price( $priceMin) ) . ' - ' . strip_tags( wc_price($priceMax) ) . ') ' . strip_tags( wc_price( $variationDiscountMin ) ) . ' - ' . strip_tags( wc_price( $variationDiscountMax ) );
            } else {
                return $button_text . ' - (' . strip_tags( wc_price( $price ) ) . ') ' . strip_tags( wc_price( $variationDiscountMin ) );
            }
        } else {
            if ($priceMin != $priceMax) { // Ranged Price
                return $button_text . ' - ' . strip_tags( wc_price( $priceMin ) ) . ' - ' . strip_tags( wc_price( $priceMax ) );
            } else {
                return $button_text . ' - ' . strip_tags( wc_price( $priceMin ) );
            }
        }
    } else { // All other product types
        $discount = apply_filters('advanced_woo_discount_rules_get_product_discount_price_from_custom_price', $price, $product, $quantity, $customPrice, $returnDetails, $manualRequest, $isCart);
        if($discount !== false){ // On Sale
            return $button_text . ' - (' . strip_tags( wc_price( $price ) ) . ') ' . strip_tags( wc_price( $discount ) );
        } else {
            return $button_text . ' - ' . strip_tags( wc_price( $price ) );
        }
    }
}