From e3723cb468c85cd7ddc2dd73b772b65bdcad228a Mon Sep 17 00:00:00 2001
From: Tim Otten <totten@civicrm.org>
Date: Thu, 8 Sep 2022 18:49:23 -0700
Subject: [PATCH] Settings - Define 'ext_max_depth'

---
 CRM/Admin/Form/Setting/Path.php           |  1 +
 CRM/Extension/System.php                  |  3 +++
 Civi/Core/SettingsManager.php             |  1 +
 settings/Extension.setting.php            | 20 ++++++++++++++++++++
 templates/CRM/Admin/Form/Setting/Path.tpl |  6 ++++++
 5 files changed, 31 insertions(+)

diff --git a/CRM/Admin/Form/Setting/Path.php b/CRM/Admin/Form/Setting/Path.php
index 19c4de7023..e30462e347 100644
--- a/CRM/Admin/Form/Setting/Path.php
+++ b/CRM/Admin/Form/Setting/Path.php
@@ -27,6 +27,7 @@ class CRM_Admin_Form_Setting_Path extends CRM_Admin_Form_Setting {
     'customTemplateDir' => CRM_Core_BAO_Setting::DIRECTORY_PREFERENCES_NAME,
     'customPHPPathDir' => CRM_Core_BAO_Setting::DIRECTORY_PREFERENCES_NAME,
     'extensionsDir' => CRM_Core_BAO_Setting::DIRECTORY_PREFERENCES_NAME,
+    'ext_max_depth' => CRM_Core_BAO_Setting::EXT,
   ];
 
   /**
diff --git a/CRM/Extension/System.php b/CRM/Extension/System.php
index 4361314395..32d6cb6437 100644
--- a/CRM/Extension/System.php
+++ b/CRM/Extension/System.php
@@ -17,6 +17,9 @@
  * @copyright CiviCRM LLC https://civicrm.org/licensing
  */
 class CRM_Extension_System {
+
+  public const DEFAULT_MAX_DEPTH = 4;
+
   private static $singleton;
 
   private $cache = NULL;
diff --git a/Civi/Core/SettingsManager.php b/Civi/Core/SettingsManager.php
index 1bd096758a..1b1cdd50e9 100644
--- a/Civi/Core/SettingsManager.php
+++ b/Civi/Core/SettingsManager.php
@@ -351,6 +351,7 @@ class SettingsManager {
           'imageUploadURL' => '[civicrm.files]/persist/contribute/',
           'extensionsDir' => '[civicrm.files]/ext/',
           'extensionsURL' => '[civicrm.files]/ext/',
+          'ext_max_depth' => \CRM_Extension_System::DEFAULT_MAX_DEPTH,
           'resourceBase' => '[civicrm.root]/',
           'userFrameworkResourceURL' => '[civicrm.root]/',
         ];
diff --git a/settings/Extension.setting.php b/settings/Extension.setting.php
index 180eff4564..510b515023 100644
--- a/settings/Extension.setting.php
+++ b/settings/Extension.setting.php
@@ -36,4 +36,24 @@ return [
     'is_contact' => 0,
     'help_text' => '',
   ],
+  'ext_max_depth' => [
+    'bootstrap_comment' => 'This is a boot setting which may be loaded during bootstrap. Defaults are loaded via SettingsBag::getSystemDefaults().',
+    'group_name' => 'Extension Preferences',
+    'group' => 'ext',
+    'name' => 'ext_max_depth',
+    'type' => 'Integer',
+    'quick_form_type' => 'Element',
+    'html_type' => 'text',
+    'html_attributes' => [
+      'size' => 4,
+      'maxlength' => 8,
+    ],
+    'default' => NULL,
+    'add' => '5.55',
+    'title' => ts('Extension Depth'),
+    'is_domain' => 1,
+    'is_contact' => 0,
+    'description' => ts('Maximum number of sub-directories to search when looking for extensions'),
+    'help_text' => NULL,
+  ],
 ];
diff --git a/templates/CRM/Admin/Form/Setting/Path.tpl b/templates/CRM/Admin/Form/Setting/Path.tpl
index 98c6597244..b8fe2e067f 100644
--- a/templates/CRM/Admin/Form/Setting/Path.tpl
+++ b/templates/CRM/Admin/Form/Setting/Path.tpl
@@ -56,6 +56,12 @@
                     <span class="description">{ts}Path where CiviCRM extensions are stored.{/ts}</span>
                 </td>
             </tr>
+             <tr class="crm-path-form-block-ext_max_depth">
+               <td class="label">{$form.ext_max_depth.label}</td>
+               <td>{$form.ext_max_depth.html}<br />
+                 <span class="description">{ts}When searching for extensions, limit the number of subdirectories.{/ts}</span>
+               </td>
+             </tr>
         </table>
    <div class="crm-submit-buttons">{include file="CRM/common/formButtons.tpl" location="bottom"}</div>
 </div>
-- 
2.25.1