From 96ff52548d811f36609ccc0db30a06f3c8de427e Mon Sep 17 00:00:00 2001
From: gbateson <gbateson>
Date: Tue, 27 Jan 2009 08:29:55 +0000
Subject: [PATCH] MDL-17679: implement course reset for HotPot module (thanks
 to Albert Gasset)

---
 lang/en_utf8/hotpot.php |  1 +
 mod/hotpot/lib.php      | 61 +++++++++++++++++++++++++++++++++++++++++
 2 files changed, 62 insertions(+)

diff --git a/lang/en_utf8/hotpot.php b/lang/en_utf8/hotpot.php
index 6611c426ff6eb..e44fbc4d90893 100644
--- a/lang/en_utf8/hotpot.php
+++ b/lang/en_utf8/hotpot.php
@@ -22,6 +22,7 @@
 $string['correct'] = 'Correct';
 $string['deleteabandoned'] = 'Delete abandoned';
 $string['deleteabandonedcheck'] = 'Do you really want to delete all $a abandoned attempts?';
+$string['deleteallattempts'] = 'Delete all attempts';
 $string['displaycoursenext'] = 'Display Course page next';
 $string['displayhotpotnext'] = 'Display Hot Potatoes quiz next';
 $string['displayindexnext'] = 'Display HotPot index next';
diff --git a/mod/hotpot/lib.php b/mod/hotpot/lib.php
index 9ac88fc6adc49..11dce951f6683 100644
--- a/mod/hotpot/lib.php
+++ b/mod/hotpot/lib.php
@@ -2464,4 +2464,65 @@ function getDir(s) {
     print '<span class="helplink">'.$html.'</span>';
 }
 
+/**
+ * This function is used by the reset_course_userdata function in moodlelib.
+ * This function will remove all attempts from hotpot quizzes in the specified course.
+ * @param $data the data submitted from the reset course.
+ * @return array status array
+ */
+function hotpot_reset_userdata($data) {
+    global $CFG;
+    require_once($CFG->libdir.'/filelib.php');
+
+    $status = array();
+
+    if (!empty($data->reset_hotpot_deleteallattempts)) {
+
+        $hotpotids = "SELECT h.id FROM {$CFG->prefix}hotpot h WHERE h.course={$data->courseid}";
+        $attemptids = "SELECT a.id FROM {$CFG->prefix}hotpot_attempts a WHERE a.hotpot in ($hotpotids)";
+
+        delete_records_select('hotpot_responses', "attempt in ($attemptids)");
+        delete_records_select('hotpot_details', "attempt in ($attemptids)");
+        delete_records_select('hotpot_attempts', "hotpot IN ($hotpotids)");
+
+        $status[] = array('component' => get_string('modulenameplural', 'hotpot'),
+                          'item' => get_string('deleteallattempts', 'hotpot'),
+                          'error' => false);
+    }
+
+    return $status;
+}
+
+/**
+ * Called by course/reset.php
+ * @param $mform form passed by reference
+ */
+function hotpot_reset_course_form($course) {
+    print_checkbox('reset_hotpot_deleteallattempts', 1, true, get_string('deleteallattempts', 'hotpot'), '', '');  echo '<br />';
+}
+function hotpot_delete_userdata($data, $showfeedback=true) {
+    global $CFG;
+    
+    if (!empty($data->reset_hotpot_deleteallattempts)) {
+
+        $hotpotids = "SELECT h.id FROM {$CFG->prefix}hotpot h WHERE h.course={$data->courseid}";
+        $attemptids = "SELECT a.id FROM {$CFG->prefix}hotpot_attempts a WHERE a.hotpot in ($hotpotids)";
+
+        delete_records_select('hotpot_responses', "attempt in ($attemptids)");
+        delete_records_select('hotpot_details', "attempt in ($attemptids)");
+        delete_records_select('hotpot_attempts', "hotpot IN ($hotpotids)");
+
+        if ($showfeedback) {
+            notify(get_string('reset').': '.get_string('modulenameplural', 'hotpot'), 'notifysuccess');
+        }
+    }
+}
+
+/**
+ * Course reset form defaults.
+ */
+function hotpot_reset_course_form_defaults($course) {
+    return array('reset_hotpot_deleteallattempts' => 1);
+}
+
 ?>