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<?php/**
 * Handles Comment Post to WordPress and prevents duplicate comment posting.
 *
 * @package WordPress
 */
 
 if ( 'POST' !== $_SERVER['REQUEST_METHOD'] ) {
 $protocol = $_SERVER['SERVER_PROTOCOL'];
 if ( ! in_array( $protocol, array( 'HTTP/1.1', 'HTTP/2', 'HTTP/2.0', 'HTTP/3' ), true ) ) {
 $protocol = 'HTTP/1.0';
 }
 
 header( 'Allow: POST' );
 header( "$protocol 405 Method Not Allowed" );
 header( 'Content-Type: text/plain' );
 exit;
 }
 
 /** Sets up the WordPress Environment. */
 require __DIR__ . '/wp-load.php';
 
 nocache_headers();
 
 $comment = wp_handle_comment_submission( wp_unslash( $_POST ) );
 if ( is_wp_error( $comment ) ) {
 $data = (int) $comment->get_error_data();
 if ( ! empty( $data ) ) {
 wp_die(
 '<p>' . $comment->get_error_message() . '</p>',
 __( 'Comment Submission Failure' ),
 array(
 'response'  => $data,
 'back_link' => true,
 )
 );
 } else {
 exit;
 }
 }
 
 $user            = wp_get_current_user();
 $cookies_consent = ( isset( $_POST['wp-comment-cookies-consent'] ) );
 
 /**
 * Fires after comment cookies are set.
 *
 * @since 3.4.0
 * @since 4.9.6 The `$cookies_consent` parameter was added.
 *
 * @param WP_Comment $comment         Comment object.
 * @param WP_User    $user            Comment author's user object. The user may not exist.
 * @param bool       $cookies_consent Comment author's consent to store cookies.
 */
 do_action( 'set_comment_cookies', $comment, $user, $cookies_consent );
 
 $location = empty( $_POST['redirect_to'] ) ? get_comment_link( $comment ) : $_POST['redirect_to'] . '#comment-' . $comment->comment_ID;
 
 // If user didn't consent to cookies, add specific query arguments to display the awaiting moderation message.
 if ( ! $cookies_consent && 'unapproved' === wp_get_comment_status( $comment ) && ! empty( $comment->comment_author_email ) ) {
 $location = add_query_arg(
 array(
 'unapproved'      => $comment->comment_ID,
 'moderation-hash' => wp_hash( $comment->comment_date_gmt ),
 ),
 $location
 );
 }
 
 /**
 * Filters the location URI to send the commenter after posting.
 *
 * @since 2.0.5
 *
 * @param string     $location The 'redirect_to' URI sent via $_POST.
 * @param WP_Comment $comment  Comment object.
 */
 $location = apply_filters( 'comment_post_redirect', $location, $comment );
 
 wp_safe_redirect( $location );
 exit;
 
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