bp_get_add_follow_button( int $leader_id = false, int $follower_id = false, array $button_args = array() )

function bp_get_add_follow_button( $leader_id = false, $follower_id = false, $button_args = array() ) {

	if ( ! $leader_id || ! $follower_id )
		return false;

	$is_following = bp_is_following( array(
		'leader_id'   => $leader_id,
		'follower_id' => $follower_id
	) );

	$button_args = wp_parse_args( $button_args, get_class_vars( 'BP_Button' ) );

	if ( $is_following ) {
		$button = wp_parse_args(
			array(
				'id'                => 'member_follow',
				'component'         => 'members',
				'must_be_logged_in' => true,
				'block_self'        => true,
				'wrapper_class'     => 'follow-button following',
				'wrapper_id'        => 'follow-button-' . $leader_id,
				'link_href'         => wp_nonce_url( bp_loggedin_user_domain() . bp_get_follow_slug() . '/stop-following/' . $leader_id . '/', 'follow_unfollow' ),
				'link_text'         => __( 'Following', 'buddyboss' ),
				'link_id'           => 'follow-' . $leader_id,
				'link_rel'          => 'stop',
				'link_class'        => 'follow-button following stop bp-toggle-action-button',
				'button_attr' => array(
					'data-title'           => __( 'Unfollow', 'buddyboss' ),
					'data-title-displayed' => __( 'Following', 'buddyboss' ),
					'data-bp-nonce'        => wp_nonce_url( bp_loggedin_user_domain() . bp_get_follow_slug() . '/stop-following/' . $leader_id . '/', 'follow_unfollow' )
				)
			)
			, $button_args );
	} else {
		$button = wp_parse_args(
			array(
				'id'                => 'member_follow',
				'component'         => 'members',
				'must_be_logged_in' => true,
				'block_self'        => true,
				'wrapper_class'     => 'follow-button not_following',
				'wrapper_id'        => 'follow-button-' . $leader_id,
				'link_href'         => wp_nonce_url( bp_loggedin_user_domain() . bp_get_follow_slug() . '/start-following/' . $leader_id . '/', 'follow_follow' ),
				'link_text'         => __( 'Follow', 'buddyboss' ),
				'link_id'           => 'follow-' . $leader_id,
				'link_rel'          => 'start',
				'link_class'        => 'follow-button not_following start',
				'button_attr' => array(
					'data-bp-nonce'        => wp_nonce_url( bp_loggedin_user_domain() . bp_get_follow_slug() . '/start-following/' . $leader_id . '/', 'follow_follow' ),
				)
			)
			, $button_args );
	}

	/**
	 * Filters the HTML for the follow button.
	 *
	 * @since BuddyBoss 1.0.0
	 *
	 * @param string $button HTML markup for follow button.
	 */
	return bp_get_button( apply_filters( 'bp_get_add_follow_button', $button ) );
}