From 6b7b39fe3ab01f05dca7b3df4a0224d2eb5e3ab7 Mon Sep 17 00:00:00 2001
From: Jun Pataleta <jun@moodle.com>
Date: Tue, 7 Mar 2017 16:50:52 +0800
Subject: [PATCH] MDL-58048 calendar: Show itemcount conditionally

Part of MDL-55611 epic.
---
 .../external/event_action_exporter.php        | 42 ++++++++++++++++++-
 calendar/classes/external/event_exporter.php  |  7 +++-
 2 files changed, 45 insertions(+), 4 deletions(-)

diff --git a/calendar/classes/external/event_action_exporter.php b/calendar/classes/external/event_action_exporter.php
index fc3e2914be6..a33ed5914fb 100644
--- a/calendar/classes/external/event_action_exporter.php
+++ b/calendar/classes/external/event_action_exporter.php
@@ -26,8 +26,10 @@ namespace core_calendar\external;
 
 defined('MOODLE_INTERNAL') || die();
 
-use \core\external\exporter;
-use \core_calendar\local\interfaces\action_interface;
+use core\external\exporter;
+use core_calendar\local\event\core_container;
+use core_calendar\local\interfaces\action_interface;
+use renderer_base;
 
 /**
  * Class for displaying a calendar event's action.
@@ -67,6 +69,41 @@ class event_action_exporter extends exporter {
         ];
     }
 
+    /**
+     * Return the list of additional properties.
+     *
+     * @return array
+     */
+    protected static function define_other_properties() {
+        return [
+            'showitemcount' => ['type' => PARAM_BOOL, 'default' => false]
+        ];
+    }
+
+    /**
+     * Get the additional values to inject while exporting.
+     *
+     * @param renderer_base $output The renderer.
+     * @return array Keys are the property names, values are their values.
+     */
+    protected function get_other_values(renderer_base $output) {
+        $event = $this->related['event'];
+
+        $modulename = $event->get_course_module()->get('modname');
+        $component = 'mod_' . $modulename;
+        $showitemcountcallback = 'core_calendar_event_action_shows_item_count';
+        $mapper = core_container::get_event_mapper();
+        $calevent = $mapper->from_event_to_legacy_event($event);
+        $params = [$calevent, $this->data->itemcount];
+        $showitemcount = component_callback($component, $showitemcountcallback, $params, false);
+
+        // Prepare other values data.
+        $data = [
+            'showitemcount' => $showitemcount
+        ];
+        return $data;
+    }
+
     /**
      * Returns a list of objects that are related.
      *
@@ -75,6 +112,7 @@ class event_action_exporter extends exporter {
     protected static function define_related() {
         return [
             'context' => 'context',
+            'event' => '\\core_calendar\\local\\interfaces\\event_interface'
         ];
     }
 }
diff --git a/calendar/classes/external/event_exporter.php b/calendar/classes/external/event_exporter.php
index 67213e8a680..10530e4ed74 100644
--- a/calendar/classes/external/event_exporter.php
+++ b/calendar/classes/external/event_exporter.php
@@ -189,8 +189,11 @@ class event_exporter extends exporter {
         $values['icon'] = $iconexporter->export($output);
 
         if ($event instanceof action_event_interface) {
-            $actionexporter = new event_action_exporter($event->get_action(),
-                ['context' => $context]);
+            $actionrelated = [
+                'context' => $context,
+                'event' => $event
+            ];
+            $actionexporter = new event_action_exporter($event->get_action(), $actionrelated);
             $values['action'] = $actionexporter->export($output);
         }