Comments Woocommerce Error Messages

Comments Woocommerce Error Messages

add_action('wp_ajax_check_duplicate_comment','check_duplicate_comment');
add_action('wp_ajax_nopriv_check_duplicate_comment','check_duplicate_comment');
function check_duplicate_comment(){
    $post_id = intval($_POST['post_id'] ?? 0);
    $content = trim(wp_unslash($_POST['content'] ?? ''));
    $user_id = get_current_user_id();
    global $wpdb;
    $exists = $wpdb->get_var($wpdb->prepare(
        "SELECT comment_ID FROM {$wpdb->comments} WHERE comment_post_ID=%d AND user_id=%d AND comment_content=%s AND comment_approved!='spam'",
        $post_id, $user_id, $content
    ));
    if($exists){
        wp_send_json_error('Duplicate comment');
    }
    wp_send_json_success();
}

add_action('wp_footer','enqueue_comment_validation_script');
function enqueue_comment_validation_script(){
    if(!is_singular() || !comments_open()) return;
    $ajax_url = esc_url(admin_url('admin-ajax.php'));
    ?>
    <script>
    document.addEventListener('DOMContentLoaded',function(){
        var form = document.getElementById('commentform');
        if(!form) return;
        var btn = form.querySelector('.form-submit input[type="submit"].submit');
        btn.removeAttribute('id');
        btn.removeAttribute('name');
        btn.addEventListener('click',function(e){
            e.preventDefault();
            var prev = document.querySelector('.comment-error.wc-block-components-notice-banner.is-error');
            if(prev) prev.remove();
            var hasRating = form.querySelector('.stars').classList.contains('selected');
            var content = form.querySelector('#comment').value.trim();
            var hasComment = content.length > 0;
            if(!hasRating || !hasComment){
                var msg = !hasRating && !hasComment
                    ? 'Select a rating and write a comment'  //Change error message
                    : !hasRating
                        ? 'Select a rating' //Change error message
                        : 'Write a comment'; //Change error message
                var div = document.createElement('div');
                div.className = 'comment-error wc-block-components-notice-banner is-error';
                div.textContent = msg;
                form.insertAdjacentElement('beforebegin', div);
                return;
            }
            var data = new URLSearchParams();
            data.append('action','check_duplicate_comment');
            data.append('post_id', form.querySelector('[name="comment_post_ID"]').value);
            data.append('content', content);
            fetch('<?php echo $ajax_url; ?>', {
                method: 'POST',
                headers: {'Content-Type':'application/x-www-form-urlencoded; charset=UTF-8'},
                credentials: 'same-origin',
                body: data.toString()
            })
            .then(function(res){ return res.json(); })
            .then(function(json){
                if(json.success){
                    HTMLFormElement.prototype.submit.call(form);
                } else {
                    var div2 = document.createElement('div');
                    div2.className = 'comment-error wc-block-components-notice-banner is-error';
                    div2.textContent = json.data || 'Duplicate comment'; //Change error message
                    form.insertAdjacentElement('beforebegin', div2);
                }
            })
            .catch(function(){
                HTMLFormElement.prototype.submit.call(form);
            });
        });
    });
    </script>
    <?php
}