Render template of a login-logout block for WordPress

render.php

<?php
/**
 * Render the login/logout block.
 * 
 * @param array $attributes Block attributes.
 * @param string $content Block content.
 * @param array $block Block instance.
 */

$link = [
	'url' => null,
	'label' => null,
];

// Remove a fake argument to resolve the current request path.
$redirect_url = home_url( remove_query_arg( 'redirect_url' ) );
$loginPostId = $attributes['loginPostId'] ?? null;

if ( ! is_user_logged_in() && ! empty( $attributes['loginLinkEnabled'] ) ) {
	if ( ! empty( $loginPostId ) ) {
		$link['url'] = add_query_arg( 'redirect_url', $redirect_url, get_permalink( $attributes['loginPostId'] ) );
	} else {
		$link['url']= wp_login_url( $redirect_url );
	}

	if ( ! empty( $attributes['loginLabel'] ) ) {
		$link['label'] = $attributes['loginLabel'];
	} else {
		$link['label'] = __( 'Login', 'commerce-pilot' );
	}
} elseif ( is_user_logged_in() && ! empty( $attributes['logoutLinkEnabled'] ) ) {
	$link['url']= wp_logout_url( $redirect_url );

	if ( ! empty( $attributes['logoutLabel'] ) ) {
		$link['label'] = $attributes['logoutLabel'];
	} else {
		$link['label'] = __( 'Logout', 'commerce-pilot' );
	}
}

// Skip, if no link should be displayed.
if ( empty( $link['url'] ) || empty( $link['label'] ) ) {
	return;
}

// Inherit block styles from the navigation link.
$css_classes = [
	'wp-block-navigation-item',
	'wp-block-navigation-link',
];

// Mark the menu item as active.
if ( $loginPostId && is_singular() && get_queried_object_id() === (int) $loginPostId ) {
	$css_classes[] = 'current-menu-item';
}

$extra_wrapper_attributes = [
	'class' => implode( ' ' , $css_classes ),
];

?>
<li <?php echo get_block_wrapper_attributes( $extra_wrapper_attributes ); ?>>
	<a 
		class="wp-block-navigation-item__content" 
		href="<?php echo esc_url( $link['url'] ); ?>">
		<?php echo esc_html( $link['label'] ); ?>
	</a>
</li>