battles/classes/Battles/Models/Inventory.php

<?php
# Date: 23.02.2022 (2:47)
namespace Battles\Models;

use Battles\Database\Db;

class Inventory
{
    public static function getWeight(int $user_id): int
    {
        return Db::getInstance()->fetchColumn('
            select 
                   sum(weight) 
            from 
                 inventory 
            where 
                  owner_id = ? 
              and on_sale = 0
        ', $user_id);
    }

    public static function getBonuses(int $user_id)
    {
        return Db::getInstance()->ofetch("
        select
               sum(add_strength) as item_strength,
               sum(add_dexterity) as item_dexterity,
               sum(add_intuition) as item_intuition,
               sum(add_endurance) as item_endurance,
               sum(add_intelligence) as item_intelligence,
               sum(add_wisdom) as item_wisdom,
               sum(add_accuracy) as item_accuracy,
               sum(add_evasion) as item_evasion,
               sum(add_criticals) as item_criticals,
               sum(add_min_physical_damage) as item_min_physical_damage,
               sum(add_max_physical_damage) as item_max_physical_damage
        from 
             inventory 
        where 
              dressed_slot != 0 and 
              owner_id = ?
        ", $user_id);
    }

    public static function getDressed(int $item_type, int $user_id): object
    {
        return Db::getInstance()->ofetchAll('
            SELECT 
                   dressed_slot 
            FROM 
                 inventory 
            WHERE 
                  dressed_slot != 0 
              AND item_type = ? 
              AND owner_id = ?
        ', [$item_type, $user_id]);
    }

    public static function countDressed(int $item_type, int $user_id): object
    {
        return Db::getInstance()->ofetchAll('
            SELECT 
                   count(dressed_slot) 
            FROM 
                 inventory 
            WHERE 
                  dressed_slot != 0 
              AND item_type = ? 
              AND owner_id = ?
        ', [$item_type, $user_id]);
    }

    public static function undressOne(int $slot, int $user_id)
    {
        Db::getInstance()->execute('
            UPDATE 
                inventory 
            SET 
                dressed_slot = 0 
            WHERE 
                  dressed_slot = ? 
              AND owner_id = ?
        ', [$slot, $user_id]);
    }

    public static function dressOne(int $item_id, int $user_id)
    {
        Db::getInstance()->execute('
            UPDATE 
                inventory 
            SET 
                dressed_slot = item_type 
            WHERE 
                  item_id = ? 
              AND owner_id = ?
        ', [$item_id, $user_id]);
    }

    public static function dressOneToSlot(int $item_id, int $slot)
    {
        Db::getInstance()->execute('UPDATE inventory SET dressed_slot = ? WHERE item_id = ?', [$slot, $item_id]);
    }

    public static function destroyItem(int $item_id, int $user_id)
    {
        Db::getInstance()->execute('
            delete 
            from 
                 inventory 
            where 
                  dressed_slot = 0 
              and owner_id = ? 
              and item_id = ?
        ', [$user_id, $item_id]);
    }

    public static function changeRings(int $item_id)
    {
        Db::getInstance()->execute('UPDATE inventory SET dressed_slot = 0 WHERE dressed_slot = 11');
        Db::getInstance()->execute('UPDATE inventory SET dressed_slot = 11 WHERE item_id = ?', $item_id);
    }

    public static function isWeared(int $item_id): bool
    {
        return Db::getInstance()->fetchColumn('
            select 
                   count(*) 
            from 
                 inventory 
            where 
                  item_id = ? 
              and dressed_slot > 0
        ', $item_id) > 0;
    }
}