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wp-content/plugins/woocommerce-paczkomaty-inpost/class/class-woocomerce-order-weight-calculator.php

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+<?php
+/**
+ * Order Weight Calculator.
+ *
+ * @package PaczkomatyInpost
+ */
+
+/**
+ * Can calculate order weight. Also integrates with fs_calculate_order_weight
+ */
+class WooCommerce_Order_Weight_Calculator {
+
+	/** @var WC_Order */
+	private $order;
+
+	/**
+	 * WooCommerce_Order_Weight_Calculator constructor.
+	 *
+	 * @param WC_Order $order Order.
+	 */
+	public function __construct( WC_Order $order ) {
+		$this->order = $order;
+	}
+
+	/**
+	 * Returns order weight in KG.
+	 *
+	 * @param float $default_weight .
+	 *
+	 * @return float - precision 3
+	 */
+	public function get_order_weight_kg( $default_weight = 0.0 ) {
+		if ( function_exists( 'fs_calculate_order_weight' ) ) {
+			$weight = fs_calculate_order_weight( $this->order );
+		} else {
+			$weight = 0.0;
+			if ( count( $this->order->get_items() ) > 0 ) {
+				foreach ( $this->order->get_items() as $item ) {
+					$weight += $this->get_raw_item_weight( $item );
+				}
+			}
+		}
+
+		if ( (float) $weight === 0.0 ) {
+			return $this->round_weight( $default_weight );
+		}
+
+		return $this->convert_wc_weight_to_kg( $weight );
+	}
+
+	/**
+	 * @param WC_Order_Item $item Order Item.
+	 *
+	 * @return float
+	 */
+	private function get_raw_item_weight( WC_Order_Item $item ) {
+		if ( $item['product_id'] > 0 ) {
+			$product = $item->get_product();
+			if ( $product instanceof WC_Product && ! $product->is_virtual() ) {
+				return $product->get_weight() * $item['qty'];
+			}
+		}
+
+		return 0;
+	}
+
+	/**
+	 * Convert WooCommerce weight to KG
+	 *
+	 * @param string $wc_weight Weight in WooCommerce default unit weight.
+	 *
+	 * @return float weight in kg - precision 3.
+	 */
+	private function convert_wc_weight_to_kg( $wc_weight ) {
+		$weight = wc_get_weight( $wc_weight, 'kg' );
+		$weight = str_replace( ',', '.', $weight );
+
+		return $this->round_weight( (float) $weight );
+	}
+
+	/**
+	 * @param $weight
+	 *
+	 * @return float
+	 */
+	private function round_weight( $weight ) {
+		$weight = round( $weight, 3 );
+
+		return $weight;
+	}
+}