Add purchase to google analytics 4 from woocommerce using measurement protocol

functions.php

//add this following code to your functions template
//change values of variables on line 64 and 65
function obtenertaxonomia( $product_id, $taxonomy ) {
	$terminos = wp_get_post_terms(
		$product_id,
		$taxonomy,
		array(
			'orderby' => 'parent',
			'order'   => 'ASC',
		)
	);
	if ( is_array( $terminos ) && ( count( $terminos ) > 0 ) ) {
		return $terminos[0]->name;
	}
	return '';
}
add_action( 'woocommerce_order_status_changed', 'purchasemeasurementprotocol');
function purchasemeasurementprotocol( $order_id ) {
    if ( ! $order_id ) { return; }
    $order = wc_get_order( $order_id );
    if ($order->data['status'] == 'processing' ){
        $productosarray = array();
        if($order->get_coupon_codes()){
            $cuopon = implode( ', ', $order->get_coupon_codes());
        }else{
            $cuopon = "";
        }
        $index=1;
        foreach ( $order->get_items() as $item_id => $item ) {
            if($item->get_type() == "line_item"){
                $product_id = $item->get_product_id();
                $variation_id = $item->get_variation_id();
                $product = $item->get_product();
                $product_type = $product->get_type();
                $productoname = $item->get_name();
                if ( 'variation' === $product_type ) { 
                    $parent_product_id = $product->get_parent_id();
                    $variantproducto = implode( ',', $product->get_variation_attributes() ); 
                    $brandproducto = obtenertaxonomia($parent_product_id, 'brands');
                    $catproducto = obtenertaxonomia($parent_product_id, 'product_cat');
                    $productoname=str_replace(chr(10),'',$productoname);
                    $productoname=str_replace(chr(13),'',$productoname);
                    $productoname=str_replace("\r",'',$productoname);
                    $productoname=str_replace("\n",'',$productoname);
                    $productoname=str_replace(" - ",' ',$productoname);
                }else{
                    $variantproducto = "";
                    $brandproducto = obtenertaxonomia($product_id, 'brands');
                    $catproducto = obtenertaxonomia($product_id, 'product_cat');
                }
                $producto = array(
                    "item_id" => strval($product->get_sku()),
                    "item_name" => $productoname,
                    "affiliation" => "",
                    "coupon" => "",
                    "currency" => $order->get_currency(),
                    "discount" => 0,
                    "index" => $index++,
                    "item_brand" => $brandproducto,
                    "item_category" => $catproducto,
                    "item_variant" => $variantproducto,
                    "item_list_id" => "measurement-protocol",
                    "item_list_name" => "Measurement protocol",
                    "price" => floatval( str_replace(",", "", $product->get_price() )),
                    "quantity" => floatval($item->get_quantity())
                );
                array_push($productosarray, $producto);
            }
        }
        $client_id = strval(get_post_meta($order_id, '_client_idanalytics', true));
        if(!$client_id || $client_id == ""){
            date_default_timezone_set('America/bogota');
            $ts = round( time() / 1000.0);
            $rand = round( rand(9,10) * 2147483647);
            $client_id = strval($rand . "." . $ts);
        }
        $datapedidoinicialimpia = array(
            "client_id" => $client_id,
            "events" => array(
                array (
                    "name" => "purchase",
                    "params" => array(
                        "currency" => "COP",
                        "transaction_id" => strval($order_id),
                        "value" => floatval( str_replace( ",", "", $order->get_total() )),
                        "coupon" => $cuopon,
                        "shipping" => floatval(str_replace(",", "", $order->get_shipping_total())),
                        "tax" => floatval(str_replace(",", "", $order->get_total_tax())),
                        "items" => $productosarray
                    )
                )
            )
        );
        $measurement_id = "G-XXXXXX";
        $api_secret = "XXXXXXXXXXXXXXXX";
        $urlgoogle = 'https://www.google-analytics.com/mp/collect?measurement_id='.$measurement_id.'&api_secret='.$api_secret;
        $datapedidocompleto = json_encode($datapedidoinicialimpia);
        $logger = new WC_Logger();
        $curl = curl_init();
        curl_setopt_array($curl, array(
            CURLOPT_URL => $urlgoogle,
            CURLOPT_RETURNTRANSFER => true,
            CURLOPT_ENCODING => '',
            CURLOPT_MAXREDIRS => 10,
            CURLOPT_TIMEOUT => 0,
            CURLOPT_FOLLOWLOCATION => true,
            CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
            CURLOPT_CUSTOMREQUEST => 'POST',
            CURLOPT_POSTFIELDS => $datapedidocompleto,
            CURLOPT_HTTPHEADER => array(
                'Content-Type: application/json'
            )
        ));
        $response = curl_exec($curl);
        if($response === false){
            $logger->add('measurement-analytics-custom', 'ESTRUCTURA PEDIDO: ' . $datapedidocompleto);
            $error = 'ERROR ENVIAR INFORMACION A ANALYTICS PEDIDO ' . $order_id .': ' . curl_error($curl);
            $logger->add('measurement-analytics-custom', $error);
        }else{
            $logger->add('measurement-analytics-custom', 'ESTRUCTURA PEDIDO: ' . $datapedidocompleto);
            $logger->add('measurement-analytics-custom', 'CORRECTO INFORMACION A ANALYTICS PEDIDO ' . $order_id . '');
        }
    }
}
add_action( 'woocommerce_after_order_notes', 'my_custom_checkout_hidden_field', 10, 1 );
function my_custom_checkout_hidden_field( $checkout ) {
    $measurement_id = "G-XXXXXX";
    echo '<div id="user_link_hidden_checkout_field">
        <input type="hidden" class="input-hidden" name="client_idanalytics" id="client_idanalytics" value="">
    </div>';
    echo '<script>gtag("get", "'.$measurement_id.'", "client_id", function(clientId) { document.getElementById("client_idanalytics").value = clientId;  });</script>';
}
add_action('woocommerce_checkout_update_order_meta', 'customfieldactualizarmeta');
function customfieldactualizarmeta($order_id){
    if ( !empty( $_POST['client_idanalytics'] ) ){
        update_post_meta( $order_id, '_client_idanalytics', $_POST['client_idanalytics'] );
    }
}