Which hook is responsible for sending the woocommerce review?

Question

PHP

I want to send a letter to the user in the online store after he has sent a review about the product. What event is this, what is it called and how to process it correctly????

Answer 1

same as in WordPress
WooCommerce reviews are trivial comments.
Accordingly
When adding a comment

add_action('wp_insert_comment', 'wpp_comment_inserted', 99, 2);

function wpp_comment_inserted($comment_id, $comment_object) {
    //$comment_object - объект комментария, 
    //получаете пост на который он оставлен
    // и если это продукт отправляете письмо
}

When a comment is approved

add_action('transition_comment_status', 'wpp_comment_approve', 10, 3);

function wpp_comment_approve($new_status, $old_status, $comment_object) {
    if( $old_status !== $new_status && $new_status === 'approved' ) {
        //$comment_object - объект комментария,
       //получаете пост на который он оставлен
       // и если это продукт отправляете письмо
    }
}