From 3471283871c38c8d1f6f7da7916b0d8f61b43faf Mon Sep 17 00:00:00 2001
From: Michael Milette <michael.milette@tngconsulting.ca>
Date: Fri, 9 Oct 2020 06:01:49 -0400
Subject: [PATCH] Added new {ifingroup id|idnumber}{/ifingroup} tags.

---
 CHANGELOG.md |  3 ++-
 README.md    |  4 ++++
 filter.php   | 27 +++++++++++++++++++++++++++
 3 files changed, 33 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index ab46750..e01f5e4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,8 +1,9 @@
 # Change Log
 All notable changes to this project will be documented in this file.
 
-## [2.0.3] dev-2020-10-07
+## [2.0.4] dev-2020-10-09
 ### Added
+- New {ifingroup id|idnumber}{/ifingroup} tags.
 - New {filtercodes} tag. Note: Only works for teachers and above.
 - New {alert style}{/alert} tags (ALPHA).
 - New {ifincohort idname|idnumber}{/ifincohort} tags.
diff --git a/README.md b/README.md
index c073536..01d6871 100644
--- a/README.md
+++ b/README.md
@@ -145,6 +145,8 @@ FilterCodes are meant to be entered as regular text in the Moodle WYSIWYG editor
 * {courseidnumber} : Display a course's ID number.
 * {sectionid} : Display the section ID (not to be confused with the section number).
 
+Also see Courses section below.
+
 ### Categories
 
 * {categoryid} : If in a course, the ID of the course's parent category, the category ID of a course category page, otherwise 0.
@@ -224,6 +226,7 @@ Note: {if`rolename`} and {ifmin`rolename`} type tags are based on role archetype
 * {ifincourse}{/ifincourse} : Will display the enclosed content only if the user is in a course other than the Front page.
 * {ifinsection}{/ifinsection} : Will display the enclosed content only if the user is in a section of a course which is not the Front Page.
 * {ifnotinsection}{/ifnotinsection} : Will display the enclosed content only if the user is not in a section of a course.
+* {ifingroup id|idnumber}{/ifingroup} : Display content if the user is part of the specified course group ID or group ID number.
 
 #### Roles
 
@@ -660,6 +663,7 @@ Create a Page on your Moodle site, preferably in a course, so that those tags wo
 * Is your tenant id 1? [{iftenant 1}]Yes[{/iftenant}] : {iftenant 1}Yes{/iftenant} Note: In Moodle classic, tenant id is assumed to be 1.
 * Is this Moodle Workplace? [{ifworkplace}]Yes[{/ifworkplace}] : {ifworkplace}Yes{/ifworkplace}
 * This is FilterCodes version [{filtercodes}] : {filtercodes} Note: Will be blank if you do not have the ability to edit this tag.
+* Are you a member of the ATEAM group [{ifingroup ATEAM}]Yes[{/ifingroup}] ? : {ifingroup ATEAM}Yes{/ifingroup} Note: Only works in courses.
 
 You can switch to different roles to see how each will affect the content being displayed.
 
diff --git a/filter.php b/filter.php
index bb4e846..6d6e49f 100644
--- a/filter.php
+++ b/filter.php
@@ -1732,6 +1732,33 @@ function ($matches) use($mycohorts) {
                 }
             }
 
+            // Tag: {ifingroup id|idnumber}.
+            if (stripos($text, '{ifingroup') !== false) {
+                static $mygroups;
+                if (!isset($mygroups)) { // Fetch my groups.
+                    $mygroups = groups_get_all_groups($PAGE->course->id, $USER->id);
+                }
+                $re = '/{ifingroup\s+(.*?)\}(.*?)\{\/ifingroup\}/ims';
+                $found = preg_match_all($re, $text, $matches);
+                if ($found > 0) {
+                    foreach ($matches[1] as $groupid) {
+                        $key = '/{ifingroup\s+' . $groupid . '\}(.*?)\{\/ifingroup\}/ims';
+                        $ismember = false;
+                        foreach ($mygroups as $group) {
+                            if ($groupid == $group->id || $groupid == $group->idnumber) {
+                                $ismember = true;
+                                break;
+                            }
+                        }
+                        if ($ismember) { // Just remove the tags.
+                            $replace[$key] = '$1';
+                        } else { // Remove the ifingroup tags and content.
+                            $replace[$key] = '';
+                        }
+                    }
+                }
+            }
+
             // Tag: {iftenant idnumber|tenantid}. Only for Moodle Workplace
             if (stripos($text, '{iftenant') !== false) {
                 if (class_exists('tool_tenant\tenancy')) {