From 240ed85dbcba7348d99ef870b8e4453c84c93521 Mon Sep 17 00:00:00 2001
From: Gilles Crettenand <gilles@crettenand.info>
Date: Thu, 18 Jun 2015 14:19:12 +0200
Subject: [PATCH] MoreLikeThis API

---
 Lib/Search/BookSearch.php | 16 ++++++++++++----
 NetBiblio.php             | 33 +++++++++++++++++++++++++++++++++
 2 files changed, 45 insertions(+), 4 deletions(-)

diff --git a/Lib/Search/BookSearch.php b/Lib/Search/BookSearch.php
index c59f528..8b12ed8 100644
--- a/Lib/Search/BookSearch.php
+++ b/Lib/Search/BookSearch.php
@@ -15,7 +15,7 @@ class BookSearch
     private $query;
     private $queryParts = array();
 
-    public function __construct()
+    public function __construct($edismax = true)
     {
         $options = array
         (
@@ -27,10 +27,13 @@ class BookSearch
         );
 
         $this->client = new \SolrClient($options);
-        $this->query = new \SolrDisMaxQuery();
 
-        // use the Extended DisMax Query parser
-        $this->query->useEDisMaxQueryParser();
+        if($edismax) {
+            $this->query = new \SolrDisMaxQuery();
+            $this->query->useEDisMaxQueryParser();
+        } else {
+            $this->query = new \SolrQuery();
+        }
 
         // most options like search fields, sorting, etc are already set
         // as default in the Solr config and thus should be set only on a
@@ -45,6 +48,11 @@ class BookSearch
         */
     }
 
+    public function setHandler($handler)
+    {
+        $this->client->setServlet(\SolrClient::SEARCH_SERVLET_TYPE, $handler);
+    }
+
     public function addCompoundQuery(array $texts, $field, $operator)
     {
         if(count($texts) > 0) {
diff --git a/NetBiblio.php b/NetBiblio.php
index efa92e1..1added2 100644
--- a/NetBiblio.php
+++ b/NetBiblio.php
@@ -711,6 +711,39 @@ class NetBiblio extends WebService
         return array_merge($data, $this->AddBookData($results['books']));
     }
 
+    /**
+     * This method return books similar to the one given.
+     *
+     * @param int|array $ids One or multiple book ids
+     * @return array
+     */
+    public function MoreLikeThis($ids)
+    {
+        $bs = new BookSearch(false);
+        $bs->addOrQuery(is_array($ids) ? $ids : array($ids), 'id');
+        $bs->setHandler('more');
+        $results = $bs->getResults(0, 5);
+        return $results['books'];
+    }
+
+    /**
+     * This method returns books similar to the books already
+     * loaned by the current user.
+     *
+     * @return array
+     * @throws AuthenticationException
+     */
+    public function MoreLikeLoans()
+    {
+        $_SESSION["user"]["login"] = 35;
+
+        $loans = $this->getUser()->GetOldLoans();
+        $ids = array_map(function($l) {
+            return $l['id'];
+        }, $loans);
+        return $this->MoreLikeThis($ids);
+    }
+
     /**
      * This method return a list of suggested titles for the given search terms
      * @param string $text