battles/classes/DressedItems.php

<?php
/**
 * Author: lopiu
 * Date: 06.07.2020
 * Time: 22:41
 */

class DressedItems
{
    protected $DB;
    protected $DBSUM;
    private $dressedItem;

    /**
     * DressedItems constructor.
     */
    public function __construct() {}

    private function getDressedItems($user_id)
    {
        try {
            $this->DB = db::c()->query('SELECT * FROM inventory WHERE owner_id = ?i AND dressed_slot > 0', $user_id);
        } catch (Exception $e) {
            echo '<div class="debug">Не прогрузилась таблица inventory (*) для класса DressedItems.</div>';
        }
    }

    private function getBonusesFromDressedItems($user_id)
    {
        try {
            $query = <<<SQL
SELECT SUM(add_strength) as sum_strength, 
       SUM(add_dexterity)as sum_dexterity, 
       SUM(add_intuition) as sum_intuition, 
       SUM(add_endurance) as sum_endurance, 
       SUM(add_intelligence) as sum_intelligence, 
       SUM(add_wisdom) as sum_wisdom
FROM inventory WHERE owner_id = ?i AND dressed_slot > 0'
SQL;
            $this->DBSUM = db::c()->query($query, $user_id)->fetch_assoc();
        } catch (Exception $e) {
            echo '<div class="debug">Не прогрузилась таблица inventory (SUM) для класса DressedItems.</div>';
        }
    }

    public function getItemsInSlots($user_id)
    {
        if (!$this->DB) {
            $this->getDressedItems($user_id);
        }
        while ($row = $this->DB->fetch_assoc()) {
            $dressed_item[$row['dressed_slot']] = $row;
            $this->dressedItem[$row['dressed_slot']] = $row;
        }
    }

    public function getBonusesAmount($user_id)
    {
        if (!$this->DBSUM) {
            $this->getBonusesFromDressedItems($user_id);
        }
        return $this->DBSUM;
    }

}