<?php

namespace UkrSolution\WpLabelsPrinting4\LabelDataMakers\Shortcodes\Woocommerce;

class Discount extends ProductsShortcode
{
    const ORDER = 4200;
    const SHOW_IN_MATCHING = 1;

    public $display_name = 'Discount (regular - sale price)';

    public function getValue($post, $field)
    {

        $field['args']['old-price'] = '_price';
        $field['args']['new-price'] = '_sale_price';
        $field['args']['show-decimal'] = 'true';

        $oldPrice = (float)$this->getProductMeta($post, $field['args']['old-price'], true);
        $newPrice = (float)$this->getProductMeta($post, $field['args']['new-price'], true);

        if (
            empty($oldPrice)
            || empty($newPrice)
            || $newPrice > $oldPrice
        ) {
            return '';
        }

        $discountValue = ($oldPrice - $newPrice) * 100 / $oldPrice;

        if ((isset($field['args']['show-decimal']) && 'true' === $field['args']['show-decimal'])) {

            $discountValue = $this->round($discountValue, $field);

            $result = number_format($discountValue, wc_get_price_decimals(), wc_get_price_decimal_separator(), wc_get_price_thousand_separator());
        } else {

            $discountValue = $this->round($discountValue, $field);

            if (false !== strpos((string)$discountValue, '.')) {
                $parts = explode('.', $discountValue);
                $result = $parts[0];
            } else {
                $result = $discountValue;
            }
        }

        return !empty($result)
            ? $this->getValueWithCurrency($result, $field)
            : '';
    }
}