<?php
// +-------------------------------------------------+
// © 2002-2004 PMB Services / www.sigb.net pmb@sigb.net et contributeurs (voir www.sigb.net)
// +-------------------------------------------------+
// $Id: c3rb.class.php,v 1.2.4.4 2026/03/26 10:10:06 dbellamy Exp $

if (stristr($_SERVER['REQUEST_URI'], ".class.php")) {
	die("no access");
}

global $class_path, $base_path;
require_once $base_path . "/admin/connecteurs/in/oai/oai.class.php";
require_once $class_path . "/sessions_tokens.class.php";

class c3rb extends oai
{
	protected const XSLT_PATH = __DIR__ . '/xslt';

	/**
	 * tokens sha256 deja calcules
	 * @var array
	 */
	static protected $tokens = [];

	/**
	 *
	 * {@inheritDoc}
	 * @see connector::get_id()
	 */
	public function get_id()
	{
		return "c3rb";
	}

	/**
	 *
	 * {@inheritdoc}
	 * @see connector::get_messages($connector_path)
	 */
	public function get_messages($connector_path)
	{
		global $lang;

		$oai_file_name = '';
		if (file_exists($connector_path . "/../oai/messages/" . $lang . ".xml")) {
			$oai_file_name = $connector_path . "/../oai/messages/" . $lang . ".xml";
		} else if (file_exists($connector_path . "/../oai/messages/fr_FR.xml")) {
			$oai_file_name = $connector_path . "/../oai/messages/fr_FR.xml";
		}

		$file_name = '';
		if (file_exists($connector_path . "/messages/" . $lang . ".xml")) {
			$file_name = $connector_path . "/messages/" . $lang . ".xml";
		} else if (file_exists($connector_path . "/messages/fr_FR.xml")) {
			$file_name = $connector_path . "/messages/fr_FR.xml";
		}

		if ($oai_file_name) {
			$xmllist = new XMLlist($oai_file_name);
			$xmllist->analyser();
			$this->msg = $xmllist->table;
		}
		if ($file_name) {
			$xmllist = new XMLlist($file_name);
			$xmllist->analyser();
			$this->msg += $xmllist->table;
		}
	}

	/**
	 *
	 * @param string $ref : inutilise
	 * @param array $params = [
	 *     'source_id' => int,
	 *     'empr_id' => int,
	 *     'link' => string
	 * ]
	 *
	 * @return string
	 */
	public static function get_resource_link($ref, $params = [])
	{

		if (empty($params['link'])) {
			return '';
		}
		if (empty($params['source_id']) || empty($params['empr_id'])) {
			return $params['link'];
		}

		$conn = new self();
		$source_params = $conn->unserialize_source_params($params['source_id']);

		$c3rb_authentication_source_id = $source_params['PARAMETERS']['c3rb_authentication_source_id'] ?? 0;
		if (empty($c3rb_authentication_source_id)) {
			return $params['link'];
		}
		$c3rb_authentication_source = $conn::get_authentication_source_by_id($c3rb_authentication_source_id);
		$c3rb_sso_endpoint = $c3rb_authentication_source['c3rb_sso_endpoint'] ?? '';
		$c3rb_shared_key = $c3rb_authentication_source['c3rb_shared_key'] ?? '';
		if (empty($c3rb_sso_endpoint) || empty($c3rb_shared_key)) {
			return $params['link'];
		}

		$sessions_tokens = new sessions_tokens('c3rb');
		$sessions_tokens->set_SESSID($_COOKIE["PmbOpac-SESSID"]);
		$c3rb_sessionid = $sessions_tokens->get_token();

		if (!$c3rb_sessionid) {
			$c3rb_sessionid = $sessions_tokens->generate_token_from_arguments([uniqid('c3rb')]);
		}
		if (empty(static::$tokens[$c3rb_sessionid])) {
			static::$tokens[$c3rb_sessionid] = hash('sha256', $c3rb_shared_key . $params['empr_id'] . $c3rb_sessionid);
		}

		$link = $c3rb_sso_endpoint . '&userid=' . $params['empr_id'] . '&sessionid=' . $c3rb_sessionid . '&token=' . static::$tokens[$c3rb_sessionid];
		$link .= '&backurl=' . base64_encode($params['link']);

		return $link;
	}
}
