From 164c865fc7f4fcd1f5d79f9dfb55829a66bb224c Mon Sep 17 00:00:00 2001
From: gbateson <gbateson>
Date: Sun, 1 Oct 2006 06:22:12 +0000
Subject: [PATCH] calendar events are now added/deleted when hotpots are
 added/updated/deleted

---
 mod/hotpot/lib.php | 82 +++++++++++++++++++++++++++++++++++++++++-----
 1 file changed, 73 insertions(+), 9 deletions(-)

diff --git a/mod/hotpot/lib.php b/mod/hotpot/lib.php
index 1b34df810c1..51e4d9248e4 100644
--- a/mod/hotpot/lib.php
+++ b/mod/hotpot/lib.php
@@ -161,6 +161,12 @@ define("HOTPOT_DISPLAYNEXT_QUIZ",   "0");
 define("HOTPOT_DISPLAYNEXT_COURSE", "1");
 define("HOTPOT_DISPLAYNEXT_INDEX",  "2");
 
+/**
+ * If start and end date for the quiz are more than this many seconds apart
+ * they will be represented by two separate events in the calendar
+ */
+define("HOTPOT_MAX_EVENT_LENGTH", "432000");   // 5 days maximum
+
 //////////////////////////////////
 /// CORE FUNCTIONS
 
@@ -186,7 +192,9 @@ define("HOTPOT_DISPLAYNEXT_INDEX",  "2");
 
 function hotpot_add_instance(&$hp) {
 	if (hotpot_set_form_values($hp)) {
-		$result = insert_record("hotpot", $hp);
+		if ($result = insert_record('hotpot', $hp)) {
+            hotpot_update_events($hp);
+        }
 	} else {
 		$result=  false;
 	}
@@ -196,12 +204,66 @@ function hotpot_add_instance(&$hp) {
 function hotpot_update_instance(&$hp) {
 	if (hotpot_set_form_values($hp)) {
 		$hp->id = $hp->instance;
-		$result = update_record("hotpot", $hp);
+		if ($result = update_record('hotpot', $hp)) {
+            hotpot_update_events($hp);
+        }
 	} else {
 		$result=  false;
 	}
 	return $result;
 }
+function hotpot_update_events($hotpot) {
+
+    // remove any previous calendar events for this hotpot
+    delete_records('event', 'modulename', 'hotpot', 'instance', $hotpot->id);
+
+    $event = new stdClass();
+    $event->description = $hotpot->summary;
+    $event->courseid    = $hotpot->course;
+    $event->groupid     = 0;
+    $event->userid      = 0;
+    $event->modulename  = 'hotpot';
+    $event->instance    = $hotpot->id;
+    $event->timestart   = $hotpot->timeopen;
+    if ($cm = get_coursemodule_from_id('hotpot', $hotpot->id)) {
+        $event->visible = hotpot_is_visible($cm);
+    } else {
+        $event->visible = 1;
+    }
+
+    if ($hotpot->timeclose && $hotpot->timeopen) {
+        // we have both a start and an end date
+        $event->eventtype   = 'open';
+        $event->timeduration = ($hotpot->timeclose - $hotpot->timeopen);
+
+        if ($event->timeduration > HOTPOT_MAX_EVENT_LENGTH) {  /// Long durations create two events
+    
+            $event->name          = $hotpot->name.' ('.get_string('hotpotopens', 'hotpot').')';
+            $event->timeduration  = 0;
+            add_event($event);
+    
+            $event->timestart    = $hotpot->timeclose;
+            $event->eventtype    = 'close';
+            $event->name         = $hotpot->name.' ('.get_string('hotpotcloses', 'hotpot').')';
+            unset($event->id);
+            add_event($event);
+        } else { // single event with duration
+            $event->name        = $hotpot->name;
+            add_event($event);
+        }
+    } elseif ($hotpot->timeopen) { // only an open date
+        $event->name          = $hotpot->name.' ('.get_string('hotpotopens', 'hotpot').')';
+        $event->eventtype   = 'open';
+        $event->timeduration = 0;
+        add_event($event);
+    } elseif ($hotpot->timeclose) { // only a closing date
+        $event->name         = $hotpot->name.' ('.get_string('hotpotcloses', 'hotpot').')';
+        $event->timestart    = $hotpot->timeclose;
+        $event->eventtype    = 'close';
+        $event->timeduration = 0;
+        add_event($event);
+    }
+}
 
 function hotpot_set_form_values(&$hp) {
 	$ok = true;
@@ -796,16 +858,18 @@ function hotpot_delete_instance($id) {
 /// and any data that depends on it.
 
 	$result = false;
-	if (delete_records("hotpot", "id", "$id")) {
+	if (delete_records('hotpot', 'id', "$id")) {
 		$result = true;
-		delete_records("hotpot_questions", "hotpot", "$id");
-		if ($attempts = get_records_select("hotpot_attempts", "hotpot='$id'")) {
+		delete_records('hotpot_questions', 'hotpot', "$id");
+		if ($attempts = get_records_select('hotpot_attempts', "hotpot='$id'")) {
 			$ids = implode(',', array_keys($attempts));
-			delete_records_select("hotpot_attempts",  "id IN ($ids)");
-			delete_records_select("hotpot_details",   "attempt IN ($ids)");
-			delete_records_select("hotpot_responses", "attempt IN ($ids)");
+			delete_records_select('hotpot_attempts',  "id IN ($ids)");
+			delete_records_select('hotpot_details',   "attempt IN ($ids)");
+			delete_records_select('hotpot_responses', "attempt IN ($ids)");
 		}
-	}
+        // remove calendar events for this hotpot
+        delete_records('event', 'modulename', 'hotpot', 'instance', $id);
+    }
 	return $result;
 }
 function hotpot_delete_and_notify($table, $select, $strtable) {