<?php declare(strict_types=1);
/**
 * Settings - Remote IPs
 *
 * @package wp-fail2ban
 * @since   4.4.0   Require PHP 7.4
 * @since   4.0.0
 */
namespace org\lecklider\charles\wordpress\wp_fail2ban;

defined( 'ABSPATH' ) or exit;

/**
 * Tab: Remote IPs
 *
 * @since 4.0.0
 */
class TabRemoteIPs extends TabBase {

	/**
	 * Settings page slug
	 *
	 * @since 4.3.2.1
	 */
	const SETTINGS_PAGE = 'wp-fail2ban-remote-ips';

	/**
	 * Override Docs link
	 *
	 * @since 4.3.2.1
	 */
	const HELP_LINK_DOCS = 'https://life-with.wp-fail2ban.com/core/configuration/settings/remote-ips/';
	/**
	 * Override Reference link
	 *
	 * @since 4.3.2.1
	 */
	const HELP_LINK_REFERENCE = 'https://docs.wp-fail2ban.com/en/' . WP_FAIL2BAN_VER2 . '/defines/remote-ips.html';

	/**
	 * {@inheritDoc}
	 *
	 * @since 4.0.0
	 */
	public function __construct() {
        // phpcs:disable Generic.Functions.FunctionCallArgumentSpacing
		$this->__['wp-fail2ban-proxies'] = __( 'Proxies', 'wp-fail2ban' );
		$this->__['remote-ips-proxies']  = __( 'Trusted IPs', 'wp-fail2ban' );
        // phpcs:enable

		parent::__construct( 'remote-ips', __( 'Remote IPs', 'wp-fail2ban' ) );
	}

	/**
	 * {@inheritDoc}
	 *
	 * @since  4.4.0    Add return type
	 * @since  4.0.0
	 *
	 * @return void
	 */
	public function admin_init(): void {
		do_action( __METHOD__ . '.before' );

        // phpcs:disable Generic.Functions.FunctionCallArgumentSpacing
		add_settings_section( 'wp-fail2ban-proxies', $this->__['wp-fail2ban-proxies'],   array( $this, 'section' ), self::SETTINGS_PAGE );
		add_settings_field( 'remote-ips-proxies',    $this->__['remote-ips-proxies'],    array( $this, 'proxies' ), self::SETTINGS_PAGE,    'wp-fail2ban-proxies' );
        // phpcs:enable

		do_action( __METHOD__ . '.after' );
	}

	/**
	 * {@inheritDoc}
	 *
	 * @since  4.4.0    Add return type
	 * @since  4.3.3.0  Refactor
	 * @since  4.3.0
	 *
	 * @return void
	 */
	public function current_screen(): void {
		$this->add_help_tab(
			'wp-fail2ban-proxies',
			array(
				$this->help_entry(
					'remote-ips-proxies',
					array(
						sprintf(
							/* translators: 1, 2: <a href> internals, links to Cloudflare IP lists */
							__( 'A list of IP addresses in full CIDR notation. The list of Cloudflare IPs can be found <a %1$s>here</a> (IPv4) and <a %2$s>here</a> (IPv6).', 'wp-fail2ban' ),
							'href="https://www.cloudflare.com/ips-v4" rel="noopener" target="_blank"',
							'href="https://www.cloudflare.com/ips-v6" rel="noopener" target="_blank"'
						),
						__( '<b>N.B.</b> Abbreviated IPv4 CIDR like <code>127/8</code> is not supported.', 'wp-fail2ban' ),
						$this->doc_link( 'WP_FAIL2BAN_PROXIES' ),
					)
				),
			)
		);

		parent::current_screen();
	}

	/**
	 * Section blurb.
	 *
	 * @since  4.4.0    Add return type
	 * @since  4.0.0
	 *
	 * @return void
	 */
	public function section(): void {
		echo '';
	}

	/**
	 * Proxies.
	 *
	 * @since  4.4.0    Add return type
	 * @since  4.3.0    Refactored.
	 * @since  4.0.0
	 *
	 * @return void
	 */
	public function proxies(): void {
		printf(
			'<fieldset><textarea class="code" cols="20" rows="10" disabled="disabled">%s</textarea></fieldset>',
			esc_html( $this->proxies_value() )
		);
		$this->description( 'WP_FAIL2BAN_PROXIES' );
	}

	/**
	 * Helper - multi-line string from proxies list.
	 *
	 * @since  4.4.0    Add return type
	 * @since  4.3.0
	 *
	 * @return string
	 */
	protected function proxies_value(): string {
		$proxies = Config::get( 'WP_FAIL2BAN_PROXIES' );
		return ( is_array( $proxies ) )
			? join( "\n", $proxies )
			: join( "\n", array_map( 'trim', explode( ',', $proxies ) ) );
	}
}