Woocommerce product customization with additional data passing

functions.php

/* ------------------------- ADD TO CART section start --------------------- */
add_action('wp_ajax_nopriv_add_to_cart_ajax', 'add_to_cart_ajax_func');
add_action('wp_ajax_add_to_cart_ajax', 'add_to_cart_ajax_func');

function add_to_cart_ajax_func(){
	//print_r($_POST);

	$product_id = $_POST['product_id'];
	$product_quantity = $_POST['product_quantity'];
	$total_price = $_POST['total_price'];
	$product_addons = $_POST['product_addons'];

	if(!empty($product_addons)){
		foreach ($product_addons as $key => $value) {
			$explodeArr = explode(':',$value);
			$arrKey = $explodeArr[0];
			$prodAddOns[$arrKey] = $explodeArr[1];
		}
	}
	
	WC()->cart->add_to_cart( $product_id, $product_quantity, 0, array(), array('add_size' => $prodAddOns, 'misha_custom_price' => ($total_price / $product_quantity)));

	$return = array(		
		'status'       => true
	); 
	wp_send_json($return);

	exit();
}



// Display custom cart item meta data (in cart and checkout)
add_filter( 'woocommerce_get_item_data', 'display_cart_item_custom_meta_data', 10, 2 );
function display_cart_item_custom_meta_data( $item_data, $cart_item ) {    
    if ( isset($cart_item['add_size']) ) {
		foreach ($cart_item['add_size'] as $skey => $svalue) {
			$item_data[] = array(
				'key'       => $skey,
				'value'     => $svalue,
			);
		}        
    }
    return $item_data;
}

// Save cart item custom meta as order item meta data and display it everywhere on orders and email notifications.
add_action( 'woocommerce_checkout_create_order_line_item', 'save_cart_item_custom_meta_as_order_item_meta', 10, 4 );
function save_cart_item_custom_meta_as_order_item_meta( $item, $cart_item_key, $values, $order ) {    
    if ( isset($values['add_size']) ) {        
		foreach ($values['add_size'] as $skey => $svalue) {
			$item->update_meta_data( $skey, $svalue);
		}   
    }
}

add_action( 'woocommerce_before_calculate_totals', 'rudr_custom_price_refresh' );

function rudr_custom_price_refresh( $cart_object ) {

	foreach ( $cart_object->get_cart() as $item ) {

		if( array_key_exists( 'misha_custom_price', $item ) ) {
			$item[ 'data' ]->set_price( $item[ 'misha_custom_price' ] );
		}
      
	}
	
}