From e099259a46fecd4222d2bb90282227db4ec748dd Mon Sep 17 00:00:00 2001
From: Simey Lameze <simey@moodle.com>
Date: Tue, 21 May 2019 09:59:39 +0800
Subject: [PATCH 1/2] MDL-59650 core_calendar: remove limit from event exporter

---
 calendar/classes/local/event/data_access/event_vault.php | 9 +++++----
 calendar/export_execute.php                              | 4 ++--
 calendar/lib.php                                         | 6 ++++--
 3 files changed, 11 insertions(+), 8 deletions(-)

diff --git a/calendar/classes/local/event/data_access/event_vault.php b/calendar/classes/local/event/data_access/event_vault.php
index 3d592088d58..8a8c20d2f3b 100644
--- a/calendar/classes/local/event/data_access/event_vault.php
+++ b/calendar/classes/local/event/data_access/event_vault.php
@@ -100,9 +100,6 @@ class event_vault implements event_vault_interface {
         $ignorehidden = true,
         callable $filter = null
     ) {
-        if ($limitnum < 1 || $limitnum > 200) {
-            throw new limit_invalid_parameter_exception("Limit must be between 1 and 200 (inclusive)");
-        }
 
         $fromquery = function($field, $timefrom, $lastseenmethod, $afterevent, $withduration) {
             if (!$timefrom) {
@@ -186,7 +183,11 @@ class event_vault implements event_vault_interface {
                 }
             }
 
-            $offset += $limitnum;
+            if (!$limitnum) {
+                break;
+            } else {
+                $offset += $limitnum;
+            }
         }
 
         return $events;
diff --git a/calendar/export_execute.php b/calendar/export_execute.php
index f87e439e632..17b55010e8e 100644
--- a/calendar/export_execute.php
+++ b/calendar/export_execute.php
@@ -186,9 +186,9 @@ if(!empty($what) && !empty($time)) {
         die();
     }
 }
-
+$limitnum = 0;
 $events = calendar_get_legacy_events($timestart, $timeend, $users, $groups, array_keys($paramcourses), false, true,
-        $paramcategory);
+        $paramcategory, $limitnum);
 
 $ical = new iCalendar;
 $ical->add_property('method', 'PUBLISH');
diff --git a/calendar/lib.php b/calendar/lib.php
index 02c2d971392..8e634806a80 100644
--- a/calendar/lib.php
+++ b/calendar/lib.php
@@ -3237,10 +3237,12 @@ function core_calendar_user_preferences() {
  *                              or events in progress/already started selected as well
  * @param boolean $ignorehidden whether to select only visible events or all events
  * @param array $categories array of category ids and/or objects.
+ * @param int $limitnum Number of events to fetch or zero to fetch all.
+ *
  * @return array $events of selected events or an empty array if there aren't any (or there was an error)
  */
 function calendar_get_legacy_events($tstart, $tend, $users, $groups, $courses,
-        $withduration = true, $ignorehidden = true, $categories = []) {
+        $withduration = true, $ignorehidden = true, $categories = [], $limitnum = 0) {
     // Normalise the users, groups and courses parameters so that they are compliant with \core_calendar\local\api::get_events().
     // Existing functions that were using the old calendar_get_events() were passing a mixture of array, int, boolean for these
     // parameters, but with the new API method, only null and arrays are accepted.
@@ -3277,7 +3279,7 @@ function calendar_get_legacy_events($tstart, $tend, $users, $groups, $courses,
         null,
         null,
         null,
-        40,
+        $limitnum,
         null,
         $userparam,
         $groupparam,

From 2b815157c949dd959a1c6ed24348e9805aff842f Mon Sep 17 00:00:00 2001
From: Simey Lameze <simey@moodle.com>
Date: Tue, 21 May 2019 10:46:47 +0800
Subject: [PATCH 2/2] MDL-59650 core_calendar: remove limit from calendar UI

---
 calendar/lib.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/calendar/lib.php b/calendar/lib.php
index 8e634806a80..be383703c3e 100644
--- a/calendar/lib.php
+++ b/calendar/lib.php
@@ -3316,7 +3316,7 @@ function calendar_get_view(\calendar_information $calendar, $view, $includenavig
     $calendardate = $type->timestamp_to_date_array($calendar->time);
 
     $date = new \DateTime('now', core_date::get_user_timezone_object(99));
-    $eventlimit = 200;
+    $eventlimit = 0;
 
     if ($view === 'day') {
         $tstart = $type->convert_to_timestamp($calendardate['year'], $calendardate['mon'], $calendardate['mday']);