Display ad expiration date to only logged in author

Hello,

How can make this code to display to only the logged in author of the ad, Other users should not see this except the ad author

/* ------------------------------------------------------------------------- *
 * WPadverts display ad expiration date
/* ------------------------------------------------------------------------- */
add_filter( "adverts_tpl_single_details", function($post_id) {
    ?>
    <div class="adverts-grid-row">
        <div class="adverts-grid-col adverts-col-30">
            <span class="adverts-round-icon adverts-icon-calendar"></span>
            <span class="adverts-row-title"><?php _e("Ad Expires", "wpadverts") ?></span>
        </div>
        <div class="adverts-grid-col adverts-col-65">
            <?php $exp_time = get_post_meta( $post_id, "_expiration_date", true ); ?>
            <?php if( $exp_time ): ?>
            <?php echo date_i18n( get_option( "date_format" ), $exp_time ) ?>
            <?php else: ?>
            Never
            <?php endif; ?>
        </div>
    </div>
    <?php
} );

Thanks