first commit

system/library/cart/weight.php

@@ -0,0 +1,104 @@
+<?php
+namespace Opencart\System\Library\Cart;
+/**
+ * Class Weight
+ *
+ * @package
+ */
+class Weight {
+	/**
+	 * @var object|mixed|null
+	 */
+	private object $db;
+	/**
+	 * @var object|mixed|null
+	 */
+	private object $config;
+	/**
+	 * @var array
+	 */
+	private array $weights = [];
+
+	/**
+	 * Constructor
+	 *
+	 * @param    object  $registry
+	 */
+	public function __construct(\Opencart\System\Engine\Registry $registry) {
+		$this->db = $registry->get('db');
+		$this->config = $registry->get('config');
+
+		$weight_class_query = $this->db->query("SELECT * FROM `" . DB_PREFIX . "weight_class` wc LEFT JOIN `" . DB_PREFIX . "weight_class_description` wcd ON (wc.`weight_class_id` = wcd.`weight_class_id`) WHERE wcd.`language_id` = '" . (int)$this->config->get('config_language_id') . "'");
+
+		foreach ($weight_class_query->rows as $result) {
+			$this->weights[$result['weight_class_id']] = [
+				'weight_class_id' => $result['weight_class_id'],
+				'title'           => $result['title'],
+				'unit'            => $result['unit'],
+				'value'           => $result['value']
+			];
+		}
+	}
+
+	/**
+	 * Convert
+	 *
+	 * @param    float  $value
+	 * @param    string  $from
+	 * @param    string  $to
+	 *
+	 * @return   float
+	 */
+	public function convert(float $value, string $from, string $to): float {
+		if ($from == $to) {
+			return $value;
+		}
+
+		if (isset($this->weights[$from])) {
+			$from = $this->weights[$from]['value'];
+		} else {
+			$from = 1;
+		}
+
+		if (isset($this->weights[$to])) {
+			$to = $this->weights[$to]['value'];
+		} else {
+			$to = 1;
+		}
+
+		return $value * ($to / $from);
+	}
+	
+	/**
+	 * Format
+	 *
+	 * @param    float  $value
+	 * @param    string  $weight_class_id
+	 * @param    string  $decimal_point
+	 * @param    string  $thousand_point
+	 *
+	 * @return   string
+	 */
+	public function format(float $value, string $weight_class_id, string $decimal_point = '.', string $thousand_point = ','): string {
+		if (isset($this->weights[$weight_class_id])) {
+			return number_format($value, 2, $decimal_point, $thousand_point) . $this->weights[$weight_class_id]['unit'];
+		} else {
+			return number_format($value, 2, $decimal_point, $thousand_point);
+		}
+	}
+
+	/**
+	 * getUnit
+	 *
+	 * @param    int  $weight_class_id
+	 *
+	 * @return   string
+	 */
+	public function getUnit(int $weight_class_id): string {
+		if (isset($this->weights[$weight_class_id])) {
+			return $this->weights[$weight_class_id]['unit'];
+		} else {
+			return '';
+		}
+	}
+}