Add support for anonymized moodleoverflow instances

amd/src/functions.js

@@ -81,7 +81,7 @@ define(['jquery', 'core/ajax', 'core/templates', 'core/notification', 'core/conf
                 // Update user reputation.
                 templates.replaceNode($('.user-details,.author').find('a[href*="id=' + userid + '"]')
                     .siblings('span'), '<span>' + response.raterreputation + '</span>', "");
-                if (userid !== response.ownerid) {
+                if (response.ownerid && userid !== response.ownerid) {
                     templates.replaceNode($('.user-details,.author').find('a[href*="id=' + response.ownerid + '"]')
                         .siblings('span'), '<span>' + response.ownerreputation + '</span>', "");
                 }

classes/anonymous.php

@@ -0,0 +1,58 @@
+<?php
+// This file is part of a plugin for 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/>.
+
+/**
+ * Moodleoverflow anonymous related class.
+ *
+ * @package   mod_moodleoverflow
+ * @copyright 2021 Justus Dieckmann WWU
+ * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+namespace mod_moodleoverflow;
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * Class for Moodleoverflow anonymity
+ *
+ * @package   mod_moodleoverflow
+ * @copyright 2021 Justus Dieckmann WWU
+ * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class anonymous {
+
+    const NOT_ANONYMOUS = 0;
+    const QUESTION_ANONYMOUS = 1;
+    const EVERYTHING_ANONYMOUS = 2;
+
+    public static function is_post_anonymous($post, $moodleoverflow, $postinguserid): bool {
+        if ($postinguserid == 0) {
+            return true;
+        }
+
+        if ($moodleoverflow->anonymous == self::EVERYTHING_ANONYMOUS) {
+            return true;
+        }
+
+        if ($moodleoverflow->anonymous == self::QUESTION_ANONYMOUS) {
+            return $post->parent == 0;
+        }
+
+        return false;
+    }
+
+}

classes/output/moodleoverflow_email.php

@@ -24,6 +24,8 @@
 
 namespace mod_moodleoverflow\output;
 
+use mod_moodleoverflow\anonymous;
+
 defined('MOODLE_INTERNAL') || die();
 
 /**
@@ -357,7 +359,11 @@ public function get_discussionname() {
      * @return string
      */
     public function get_author_fullname() {
-        return fullname($this->author, $this->viewfullnames);
+        if (anonymous::is_post_anonymous($this->post, $this->moodleoverflow, $this->author->id)) {
+            return get_string('privacy:anonym_user_name', 'mod_moodleoverflow');
+        } else {
+            return fullname($this->author, $this->viewfullnames);
+        }
     }
 
     /**
@@ -515,6 +521,10 @@ public function get_moodleoverflowviewlink() {
      * @return string
      */
     public function get_authorlink() {
+        if (anonymous::is_post_anonymous($this->post, $this->moodleoverflow, $this->author->id)) {
+            return null;
+        }
+
         $link = new \moodle_url(
             '/user/view.php', array(
                 'id'     => $this->post->userid,
@@ -532,6 +542,9 @@ public function get_authorlink() {
      */
     public function get_author_picture() {
         global $OUTPUT;
+        if (anonymous::is_post_anonymous($this->post, $this->moodleoverflow, $this->author->id)) {
+            return '';
+        }
 
         return $OUTPUT->user_picture($this->author, array('courseid' => $this->course->id));
     }
@@ -542,6 +555,10 @@ public function get_author_picture() {
      * @return string
      */
     public function get_group_picture() {
+        if (anonymous::is_post_anonymous($this->post, $this->moodleoverflow, $this->author->id)) {
+            return '';
+        }
+
         if (isset($this->userfrom->groups)) {
             $groups = $this->userfrom->groups[$this->moodleoverflow->id];
         } else {

classes/ratings.php

@@ -465,51 +465,60 @@ private static function moodleoverflow_get_reputation_instance($moodleoverflowid
             print_error('invalidmoodleoverflowid', 'moodleoverflow');
         }
 
-        // Get all posts of this user in this module.
-        // Do not count votes for own posts.
-        $sql = "SELECT r.id, r.postid as post, r.rating
+        // Initiate a variable.
+        $reputation = 0;
+
+        if ($moodleoverflow->anonymous != anonymous::EVERYTHING_ANONYMOUS) {
+
+            // Get all posts of this user in this module.
+            // Do not count votes for own posts.
+            $sql = "SELECT r.id, r.postid as post, r.rating
                   FROM {moodleoverflow_posts} p
                   JOIN {moodleoverflow_ratings} r ON p.id = r.postid
-                 WHERE p.userid = ? AND NOT r.userid = ? AND r.moodleoverflowid = ?
-              ORDER BY r.postid ASC";
-        $params = array($userid, $userid, $moodleoverflowid);
-        $records = $DB->get_records_sql($sql, $params);
+                 WHERE p.userid = ? AND NOT r.userid = ? AND r.moodleoverflowid = ? ";
 
-        // Check if there are results.
-        $records = (isset($records)) ? $records : array();
+            if ($moodleoverflow->anonymous == anonymous::QUESTION_ANONYMOUS) {
+                $sql .= " AND p.parent <> 0 ";
+            }
 
-        // Initiate a variable.
-        $reputation = 0;
+            $sql .= "ORDER BY r.postid ASC";
 
-        // Iterate through all ratings.
-        foreach ($records as $record) {
+            $params = array($userid, $userid, $moodleoverflowid);
+            $records = $DB->get_records_sql($sql, $params);
 
-            // The rating is a downvote.
-            if ($record->rating == RATING_DOWNVOTE) {
-                $reputation += get_config('moodleoverflow', 'votescaledownvote');
-                continue;
-            }
+            // Check if there are results.
+            $records = (isset($records)) ? $records : array();
 
-            // The rating is an upvote.
-            if ($record->rating == RATING_UPVOTE) {
-                $reputation += get_config('moodleoverflow', 'votescaleupvote');
-                continue;
-            }
+            // Iterate through all ratings.
+            foreach ($records as $record) {
 
-            // The post has been marked as helpful by the question owner.
-            if ($record->rating == RATING_HELPFUL) {
-                $reputation += get_config('moodleoverflow', 'votescalehelpful');
-                continue;
-            }
+                // The rating is a downvote.
+                if ($record->rating == RATING_DOWNVOTE) {
+                    $reputation += get_config('moodleoverflow', 'votescaledownvote');
+                    continue;
+                }
 
-            // The post has been marked as solved by a teacher.
-            if ($record->rating == RATING_SOLVED) {
-                $reputation += get_config('moodleoverflow', 'votescalesolved');
+                // The rating is an upvote.
+                if ($record->rating == RATING_UPVOTE) {
+                    $reputation += get_config('moodleoverflow', 'votescaleupvote');
+                    continue;
+                }
+
+                // The post has been marked as helpful by the question owner.
+                if ($record->rating == RATING_HELPFUL) {
+                    $reputation += get_config('moodleoverflow', 'votescalehelpful');
+                    continue;
+                }
+
+                // The post has been marked as solved by a teacher.
+                if ($record->rating == RATING_SOLVED) {
+                    $reputation += get_config('moodleoverflow', 'votescalesolved');
+                    continue;
+                }
+
+                // Another rating should not exist.
                 continue;
             }
-
-            // Another rating should not exist.
-            continue;
         }
 
         // Get votes this user made.
@@ -806,4 +815,4 @@ private static function moodleoverflow_user_can_rate($moodleoverflow, $cm = null
         return has_capability('mod/moodleoverflow:ratepost', $modulecontext, $userid);
     }
 
-}
+}

db/install.xml

@@ -23,6 +23,7 @@
         <FIELD NAME="grademaxgrade" TYPE="int" LENGTH="10" NOTNULL="false" SEQUENCE="false"/>
         <FIELD NAME="gradescalefactor" TYPE="int" LENGTH="10" NOTNULL="false" SEQUENCE="false"/>
         <FIELD NAME="gradecat" TYPE="int" LENGTH="10" NOTNULL="false" SEQUENCE="false"/>
+        <FIELD NAME="anonymous" TYPE="int" LENGTH="2" NOTNULL="true" DEFAULT="0" SEQUENCE="false"/>
       </FIELDS>
       <KEYS>
         <KEY NAME="primary" TYPE="primary" FIELDS="id"/>

db/upgrade.php

@@ -138,5 +138,22 @@ function xmldb_moodleoverflow_upgrade($oldversion) {
         upgrade_mod_savepoint(true, 2019052600, 'moodleoverflow');
     }
 
+    if ($oldversion < 2021060800) {
+
+        // Define table moodleoverflow to be edited
+        $table = new xmldb_table('moodleoverflow');
+
+        // Define field anonymous to be added to moodleoverflow.
+        $field = new xmldb_field('anonymous', XMLDB_TYPE_INTEGER, '2', null, XMLDB_NOTNULL, null, 0, 'gradecat');
+
+        // Conditionally launch add field grademaxgrade.
+        if (!$dbman->field_exists($table, $field)) {
+            $dbman->add_field($table, $field);
+        }
+
+        // Moodleoverflow savepoint reached.
+        upgrade_mod_savepoint(true, 2021060800, 'moodleoverflow');
+    }
+
     return true;
 }