redirect requests from matching permastruct pattern to the correct one

functions.php

add_action( 'wp_loaded', 'tt_redirect_canonical' );
function tt_redirect_canonical() {
    $parsed_requested_url = parse_url( $_SERVER['REQUEST_URI'] );
    if ( preg_match_all( '/\/[0-9]{4}\/[0-9]{2}\/[0-9]{2}\/(?<post_name>[a-z0-9\-]*)\/?$/', $parsed_requested_url['path'], $matches ) ) {

        foreach ( $matches['post_name'] as $match ) {
            $args = array(
                'name'             => $match,
                'post_type'        => 'post',
                'post_status'      => 'publish',
                'posts_per_page'   => 1,
                'suppress_filters' => false,
            );
            $found_post = get_posts( $args );

            if ( $found_post ) {
                $redirect_url = get_permalink( $found_post[0]->ID );
                wp_safe_redirect( $redirect_url, 301 );
                die();
            }
        }
    }elseif( preg_match_all( '/^\/([0-9]{4})\/?/', $parsed_requested_url['path'], $matches ) ) {
    	$redirect_url = '/date' . $parsed_requested_url['path'];
        wp_safe_redirect( $redirect_url, 301 );
        die();
    }
}