From 57440dd5c9ee1719c51639c2f744e287444b93b7 Mon Sep 17 00:00:00 2001
From: Amaury Balmer <amaury@beapi.fr>
Date: Fri, 17 Feb 2023 16:28:24 +0100
Subject: [PATCH] add description on identify route

---
 Classes/Server.php     | 30 +++++++++++++++++++++++++++++-
 Configuration/Main.php |  6 ++++++
 index.php              |  3 ++-
 3 files changed, 37 insertions(+), 2 deletions(-)

diff --git a/Classes/Server.php b/Classes/Server.php
index 79ba8ff..3c32bfe 100644
--- a/Classes/Server.php
+++ b/Classes/Server.php
@@ -39,6 +39,9 @@ class Server
     private $token_prefix = '';
     private $token_valid = 86400;
 
+    const NS_URI_OAI_DC = 'http://www.openarchives.org/OAI/2.0/oai_dc/';
+    const NS_URI_DC = 'http://purl.org/dc/elements/1.1/';
+
     public function __construct($uri, $args, $identifyResponse, $callbacks, $config)
     {
         $this->uri = $uri;
@@ -92,7 +95,32 @@ public function Identify()
             $cmf = $this->response->addToVerbNode('Identify', null, true);
 
             foreach ($this->identifyResponse as $key => $val) {
-                $this->response->addChild($cmf, $key, $val);
+                if ( $key === 'description' ) {
+                    $element       = $this->response->doc->createElement( 'description' );
+                    $metadata_node = $cmf->appendChild( $element );
+
+                    $element = $this->response->doc->createElement( 'oai_dc:dc' );
+                    $element->setAttribute( 'xmlns:oai_dc', self::NS_URI_OAI_DC );
+                    $element->setAttribute( 'xmlns', 'http://www.openarchives.org/OAI/2.0/' );
+                    $element->setAttribute( 'xmlns:dc', 'http://purl.org/dc/elements/1.1/' );
+                    $element->setAttribute( 'xmlns:xsi', 'http://www.w3.org/2001/XMLSchema-instance' );
+                    $element->setAttribute( 'xsi:schemaLocation',
+                                            'http://www.openarchives.org/OAI/2.0/ http://www.openarchives.org/OAI/2.0/OAI-PMH.xsd' );
+                    $sub_description_node = $metadata_node->appendChild( $element );
+
+                    foreach ( $val as $_key => $content ) {
+                        if ( 'identifier' == $_key ) {
+                            $element = $this->response->doc->createElement( 'dc:identifier', htmlspecialchars( html_entity_decode( $content, ENT_QUOTES, 'UTF-8' ), ENT_XML1, 'UTF-8' ) );
+                        } else {
+                            $element = $this->response->doc->createElement( 'dc:description', htmlspecialchars( html_entity_decode( $content, ENT_QUOTES, 'UTF-8' ), ENT_XML1, 'UTF-8' ) );
+                            $element->setAttribute( 'xml:lang', str_replace('lang:', '', $_key) );
+                        }
+
+                        $sub_description_node->appendChild( $element );
+                    }
+                } else {
+                    $this->response->addChild($cmf, $key, $val);
+                }
             }
         }
     }
diff --git a/Configuration/Main.php b/Configuration/Main.php
index 8c447d1..c4afb05 100644
--- a/Configuration/Main.php
+++ b/Configuration/Main.php
@@ -56,6 +56,12 @@
         'oai_dc' => [
             'schema' => 'http://www.openarchives.org/OAI/2.0/oai_dc.xsd',
             'namespace' => 'http://www.openarchives.org/OAI/2.0/oai_dc/',
+            'description' => array(
+                'identifier' => 'https://urloftheoairepo/',
+                'lang:fre' => 'French language description of the OAI warehouse.',
+                'lang:eng' => 'English language description of the OAI warehouse.'
+                // You can add any additional languages
+            )
         ],
     ],
 
diff --git a/index.php b/index.php
index 9be7def..f21de39 100644
--- a/index.php
+++ b/index.php
@@ -50,7 +50,8 @@
     'adminEmail' => $config->getConfigValue('adminEmail'),
     'earliestDatestamp' => gmdate('Y-m-d\TH:i:s\Z', $data->getEarliest()),
     'deletedRecord' => $config->getConfigValue('deletedRecord'),
-    'granularity' => 'YYYY-MM-DDThh:mm:ssZ'
+    'granularity' => 'YYYY-MM-DDThh:mm:ssZ',
+    'description' => $config->getConfigValue('metadataPrefix')['oai_dc']['description']
 ];
 
 $oai2 = new Server(