MDL-67813 repository_contentbank: Add search functionality

repository/contentbank/classes/contentbank_search.php

@@ -0,0 +1,61 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Utility class for searching of content bank files.
+ *
+ * @package    repository_contentbank
+ * @copyright  2020 Mihail Geshoski <[email protected]>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+namespace repository_contentbank;
+
+/**
+ * Represents the content bank search related functionality.
+ *
+ * @package    repository_contentbank
+ * @copyright  2020 Mihail Geshoski <[email protected]>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class contentbank_search {
+
+    /**
+     * Generate and return content nodes for all content bank files that match the search criteria
+     * and can be viewed/accessed by the user.
+     *
+     * @param string $search The search string
+     * @return array[] The array containing all content file nodes that match the search criteria. Each content node is
+     *                 an array with keys: shorttitle, title, datemodified, datecreated, author, license, isref, source,
+     *                 icon, thumbnail.
+     */
+    public static function get_search_contents(string $search): array {
+        $contentbank = new \core_contentbank\contentbank();
+        // Return all content bank content that matches the search criteria and can be viewed/accessed by the user.
+        $contents = $contentbank->search_contents($search);
+        return array_reduce($contents, function($list, $content) {
+            $contentcontext = \context::instance_by_id($content->get_content()->contextid);
+            $browser = \repository_contentbank\helper::get_contentbank_browser($contentcontext);
+            // If the user can access the content and content node can be created, add the node into the
+            // search results list.
+            if ($browser->can_access_content() &&
+                    $contentnode = \repository_contentbank\helper::create_contentbank_content_node($content)) {
+                $list[] = $contentnode;
+            }
+            return $list;
+        }, []);
+    }
+}

repository/contentbank/lib.php

@@ -47,7 +47,7 @@ class repository_contentbank extends repository {
 
         $ret = [];
         $ret['dynload'] = true;
-        $ret['nosearch'] = true;
+        $ret['nosearch'] = false;
         $ret['nologin'] = true;
 
         // Return the parameters from the encoded path if the encoded path is not empty.
@@ -144,4 +144,19 @@ class repository_contentbank extends repository {
 
         return false;
     }
+
+    /**
+     * Return search results.
+     *
+     * @param string $search
+     * @param int $page
+     * @return array
+     */
+    public function search($search, $page = 0) {
+        $ret = [];
+        $ret['nologin'] = true;
+        $ret['list'] = \repository_contentbank\contentbank_search::get_search_contents($search);
+
+        return $ret;
+    }
 }