<?php
/**
 * TNT OFFICIAL MODULE FOR PRESTASHOP
 *
 * @author    GFI Informatique <www.gfi.fr>
 * @copyright 2016-2017 GFI Informatique, 2016-2017 TNT
 * @license   https://opensource.org/licenses/MIT MIT License
 */

require_once _PS_MODULE_DIR_.'tntofficiel/tntofficiel.php';
require_once _PS_MODULE_DIR_.'tntofficiel/libraries/TNTOfficiel_Debug.php';

class TNTOfficiel_Cart
{
    /**
     * Is shipping free for cart, through configuration.
     *
     * @param $objArgCart
     * @return bool
     */
    public static function isCartShippingFree($objArgCart)
    {
        TNTOfficiel_Debug::log(array('msg' => '>>', 'file' => __FILE__, 'line' => __LINE__));

        $arrConfigShipping = Configuration::getMultiple(array(
            'PS_SHIPPING_FREE_PRICE',
            'PS_SHIPPING_FREE_WEIGHT'
        ));

        // Load current TNT carrier object.
        $objCarrierTNT = TNTOfficiel_Carrier::loadGlobalCarrier();
        // If TNT carrier object not available.
        if ($objCarrierTNT === null) {
            return true;
        }

        // If TNT carrier is inactive or free.
        if (!$objCarrierTNT->active || $objCarrierTNT->getShippingMethod() == Carrier::SHIPPING_METHOD_FREE) {
            return true;
        }

        // Get cart amount to reach for free shipping.
        $fltFreeFeesPrice = 0;
        if (isset($arrConfigShipping['PS_SHIPPING_FREE_PRICE'])) {
            $fltFreeFeesPrice = (float)Tools::convertPrice(
                (float)$arrConfigShipping['PS_SHIPPING_FREE_PRICE'],
                Currency::getCurrencyInstance((int)$objArgCart->id_currency)
            );
        }
        // Free shipping if cart amount, inc. taxes, inc. product & discount, exc. shipping > PS_SHIPPING_FREE_PRICE
        if ($fltFreeFeesPrice > 0
            && $objArgCart->getOrderTotal(true, Cart::BOTH_WITHOUT_SHIPPING, null, null, false) >= $fltFreeFeesPrice
        ) {
            return true;
        }

        // Free shipping if cart weight > PS_SHIPPING_FREE_WEIGHT
        if (isset($arrConfigShipping['PS_SHIPPING_FREE_WEIGHT'])
            && $objArgCart->getTotalWeight() >= (float)$arrConfigShipping['PS_SHIPPING_FREE_WEIGHT']
            && (float)$arrConfigShipping['PS_SHIPPING_FREE_WEIGHT'] > 0
        ) {
            return true;
        }

        return false;
    }

    /**
     * Get additional shipping cost for cart (exc. taxes).
     *
     * @param $objArgCart
     * @return float
     */
    public static function getCartExtraShippingCost($objArgCart)
    {
        TNTOfficiel_Debug::log(array('msg' => '>>', 'file' => __FILE__, 'line' => __LINE__));

        $fltShippingCost = 0;
        $arrProducts = $objArgCart->getProducts();

        // If no product, no shipping extra cost.
        if (!count($arrProducts)) {
            return 0;
        }

        // If only virtual products in cart, no extra shipping cost.
        if ($objArgCart->isVirtualCart()) {
            return 0;
        }

        // If TNT carrier is free.
        $boolIsCartShippingFree = TNTOfficiel_Cart::isCartShippingFree($objArgCart);
        if ($boolIsCartShippingFree) {
            return 0;
        }

        // Load current TNT carrier object.
        $objCarrierTNT = TNTOfficiel_Carrier::loadGlobalCarrier();
        // If TNT carrier object not available, no extra shipping cost.
        if ($objCarrierTNT === null) {
            return 0;
        }

        // Adding handling charges.
        $shipping_handling = Configuration::get('PS_SHIPPING_HANDLING');
        if (isset($shipping_handling) && $objCarrierTNT->shipping_handling) {
            $fltShippingCost += (float)$shipping_handling;
        }

        // Adding additional shipping cost per product.
        foreach ($arrProducts as $product) {
            if (!$product['is_virtual']) {
                $fltShippingCost += $product['additional_shipping_cost'] * $product['cart_quantity'];
            }
        }

        $fltShippingCost = (float)Tools::convertPrice($fltShippingCost, Currency::getCurrencyInstance((int)$objArgCart->id_currency));

        return $fltShippingCost;
    }
}