Magento 2 add to wish list event?

Question

I would like to customize the add to wish list functionality from my custom module In magento 2.

Actually i need custom options chosen and product id when i wishlist a product. i have found a link for list of magento 2 events below https://cyrillschumacher.com/magento2-list-of-all-dispatched-events/ please suggest me how to achieve this?

I have written code as shown below the event has been calling perfect but i unable to get the product id and custom options how to get in the observer?

app/code/Demo/Pricecalculations/etc/frontend/events.xml

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:Event/etc/events.xsd">
<event name="wishlist_add_product">
       <observer name="Demo_Pricecalculations_Wishlistproduct" instance="Demo\Pricecalculations\Observer\Wishlistproduct" />
   </event>
</config>

app/code/Demo/Pricecalculations/Observer/

<?php
namespace Demo\Pricecalculations\Observer;
use Magento\Framework\Event\ObserverInterface;
use Magento\Framework\App\RequestInterface;
class Wishlistproduct implements \Magento\Framework\Event\ObserverInterface
{

    public function execute(\Magento\Framework\Event\Observer $observer) 
    {
        $writer = new \Zend\Log\Writer\Stream(BP.'/var/log/Wishlist.log');
        $logger = new \Zend\Log\Logger();
        $logger->addWriter($writer);
        $logger->info("custom Wishlist function has been Calling");

    }

}

Answer 1

wishlist_add_product give us 3 parameters

    $this->_eventManager->dispatch(
            'wishlist_add_product',
            ['wishlist' => $wishlist, 'product' => $product, 'item' => $result]
        );

• wishlist : it give customer wishlist object.. At observer you can get wish object by $observer->getEvent()->getWishlist();
• product: it give customer just added product object. At observer you can get product object by $observer->getEvent()->getProduct();
• item: current add wishtlist item . At observer you can get product object by $observer->getEvent()->getItem();

So, at observe you can product id from $observer->getEvent()->getProduct()->getId()