<?php
/**
* 2022 ECSoft
*
* NOTICE OF LICENSE
*
* This source file is subject to the Academic Free License (AFL 3.0)
* that is bundled with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://opensource.org/licenses/afl-3.0.php
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to dev.ecsoft@gmail.com so we can send you a copy immediately.
*
*  @author ECSoft <dev.ecsoft@gmail.com>
*  @copyright  2022 ECSoft
*  @license    http://opensource.org/licenses/afl-3.0.php  Academic Free License (AFL 3.0)
*  International Registered Trademark & Property of ECSoft
*/

require_once dirname(__FILE__) . '/EcsGtmProEcommerce.php';

class EcsGtmProDataLayer
{
    protected $dlManager;

    public $pageCategory;
    public $event;
    public $eventCallback;
    public $eventTimeout;
    public $ecommerce;

    public function __construct($dlManager)
    {
        $this->dlManager = $dlManager;
        $currency = !empty(Context::getContext()->currency->iso_code) ? Context::getContext()->currency->iso_code : null;
        $this->ecommerce = new EcsGtmProEcommerce($this, $currency);
    }

    public function getManager()
    {
        return $this->dlManager;
    }

    public function addItem($product, $type, $list = null)
    {
        if ($this->getManager()->isEE()) {
            $this->addEEItem($product, $type, $list);
        }
        if ($this->getManager()->isGA4()) {
            $this->addGA4Item($product, $list);
        }
        if (empty($this->event)) {
            $this->event = $type;
        }
    }

    public function addEEItem($product, $type, $list = null)
    {
        $dataLayerProduct = new EcsGtmProDataLayerProduct($this->getManager()->module, $product, $list);
        $dataLayerProduct->removeNull();

        if ($type == 'view_item') {
            if (empty($this->ecommerce->detail)) {
                $this->ecommerce->detail = new stdClass();
            }
            $this->ecommerce->detail->products = array($dataLayerProduct);
        } elseif ($type == 'view_item_list' || $type == 'search_results') {
            if (empty($this->ecommerce->impressions)) {
                $this->ecommerce->impressions = array();
            }
            $this->ecommerce->impressions[] = $dataLayerProduct;
        } elseif ($type == 'view_cart') {
            if (empty($this->ecommerce->checkout)) {
                $this->ecommerce->checkout = array();
            }
            $this->ecommerce->checkout[] = $dataLayerProduct;
        } elseif ($type == 'begin_checkout') {
            if (empty($this->ecommerce->checkout->products)) {
                $this->ecommerce->checkout = new stdClass();
                $this->ecommerce->checkout->products = array();
            }
            $this->ecommerce->checkout->products[] = $dataLayerProduct;
        } elseif ($type == 'purchase') {
            if (empty($this->ecommerce->purchase->products)) {
                $this->ecommerce->purchase = new stdClass();
                $this->ecommerce->purchase->products = array();
            }
            $this->ecommerce->purchase->products[] = $dataLayerProduct;
        } elseif ($type == 'add_to_cart') {
            if (empty($this->ecommerce->add->products)) {
                $this->ecommerce->add = new stdClass();
            }
            $this->ecommerce->add->products = array($dataLayerProduct);
            $this->event = empty($this->event) ? 'addToCart' : $this->event;
        } elseif ($type == 'remove_from_cart') {
            if (empty($this->ecommerce->remove->products)) {
                $this->ecommerce->remove = new stdClass();
            }
            $this->ecommerce->remove->products = array($dataLayerProduct);
            $this->event = empty($this->event) ? 'removeFromCart' : $this->event;
        } elseif ($type == 'refund') {
            if (empty($this->ecommerce->refund->products)) {
                $this->ecommerce->refund = new stdClass();
                $this->ecommerce->refund->products = array();
            }
            $this->ecommerce->refund->products[] = $dataLayerProduct;
        }
    }

    public function getItems()
    {
        $items = array();

        if ($this->getManager()->isGA4()) {
            $items = $this->ecommerce->items;
        } elseif ($this->getManager()->isEE()) {
            if (!empty($this->ecommerce->detail->products)) {
                $items = $this->ecommerce->detail->products;
            } elseif (!empty($this->ecommerce->impressions)) {
                $items = $this->ecommerce->impressions;
            } elseif (!empty($this->ecommerce->checkout)) {
                $items = $this->ecommerce->checkout;
            }
        }

        return $items;
    }

    public function addGA4Item($product, $list)
    {
        $dataLayerProduct = new EcsGtmProDataLayerItem($this->getManager()->module, $product, $list);
        $dataLayerProduct->removeNull();
        if (empty($this->ecommerce->items)) {
            $this->ecommerce->items = array();
        }
        $this->ecommerce->items[] = $dataLayerProduct;
    }

    public function setSubtotalsFromCart($cart)
    {
        if (Validate::isLoadedObject($cart)) {
            $this->ecommerce->value = (float) round($cart->getOrderTotal(), _ECSGTMPRO_PRICE_DECIMAL_);
            $this->ecommerce->total_tax_exc = (float) round($cart->getOrderTotal(false), _ECSGTMPRO_PRICE_DECIMAL_);
            $this->ecommerce->total_products = (float) round($cart->getOrderTotal(true, Cart::ONLY_PRODUCTS), _ECSGTMPRO_PRICE_DECIMAL_);
            $this->ecommerce->total_shipping = (float) round($cart->getOrderTotal(true, Cart::ONLY_SHIPPING), _ECSGTMPRO_PRICE_DECIMAL_);
            $this->ecommerce->total_discounts = (float) round($cart->getOrderTotal(true, Cart::ONLY_DISCOUNTS), _ECSGTMPRO_PRICE_DECIMAL_);
        }
    }

    public function toJson()
    {
        $js = '';

        if (count((array)$this)) {
            $eventCallback = false;
            if (!empty($this->eventCallback)) {
                $this->eventCallback = str_replace('"', '@@', $this->eventCallback);
                $this->eventCallback = "!##".$this->eventCallback."##!";
                $eventCallback = true;
                if (empty($this->event)) {
                    $this->event = 'eventForCallback';
                }
                if (empty($this->eventTimeout)) {
                    $this->eventTimeout = 2000;
                }
            } else {
                unset($this->eventCallback);
                unset($this->eventTimeout);
            }

            $jsonOptions = JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE | JSON_PRETTY_PRINT;
            $js = json_encode($this, $jsonOptions);

            if ($eventCallback) {
                $js = str_replace('##!"', '', str_replace('"!##', '', $js));
                $js = str_replace('@@', '"', $js);
            }
        }

        return $js;
    }
}