From fe2ea33deec0f3e4a3cb8f1e9ab6f2febec12efa Mon Sep 17 00:00:00 2001
From: Tim Otten <totten@civicrm.org>
Date: Fri, 20 Oct 2023 20:10:49 -0700
Subject: [PATCH] (POC) Automatically copy `Navigation` mgds to all domains

---
 Civi/Foo/MultisiteManaged.php | 73 +++++++++++++++++++++++++++++++++++
 1 file changed, 73 insertions(+)
 create mode 100644 Civi/Foo/MultisiteManaged.php

diff --git a/Civi/Foo/MultisiteManaged.php b/Civi/Foo/MultisiteManaged.php
new file mode 100644
index 0000000000..65a8d4f566
--- /dev/null
+++ b/Civi/Foo/MultisiteManaged.php
@@ -0,0 +1,73 @@
+<?php
+
+namespace Civi\Foo;
+
+use Civi\Core\Service\AutoService;
+use Symfony\Component\EventDispatcher\EventSubscriberInterface;
+
+/**
+ * If an extension defines a managed `Navigation` record, then replicate it across domains.
+ *
+ * Decision/Question: How to package/activate this functionality, eg
+ *
+ * 1. Package the subscriber as standard behavior in core
+ * 2. Package the subscriber as optional behavior in core (eg setting `multisite_entity_sync`)
+ * 3. Package the subscriber in an extension (`multsite` or `multisitemgd`)
+ * 4. Package the subscriber as a mixin that extensions may toggle (`<mixin>mgd@2.0</mixin>`)
+ *
+ * The choice of package/activation determines how it interacts with the 2-3 ext's that already reproduce across domains:
+ *
+ * 1. Nobody has to opt-in. Bt would multiply #records, unless we  a hard-coded exclusion list for the 2-3.
+ * 2. Won't activate unless the site-admin chooses to.
+ * 3. Won't activate unless the site-admin chooses to.
+ * 4. Each extension needs to opt into the new behavior.
+ *
+ * @service
+ * @internal
+ */
+class MultisiteManaged extends AutoService implements EventSubscriberInterface {
+
+  protected $entities = ['Navigation', 'Dashboard'];
+
+  public static function getSubscribedEvents() {
+    return [
+      '&hook_civicrm_managed' => ['generateDomainEntities', -1000],
+    ];
+  }
+
+  public function generateDomainEntities(array &$entities): void {
+    $templates = [];
+
+    // Figure out which entities to copy
+    foreach (array_keys($entities) as $entityKey) {
+      if ($this->isCopiable($entities[$entityKey])) {
+        $templates[] = $entities[$entityKey];
+        unset($entities[$entityKey]);
+      }
+    }
+
+    // Make the real entities, one for each domain
+    foreach ($templates as $template) {
+      foreach ($this->makeCopies($template) as $entity) {
+        $entities[] = $entity;
+      }
+    }
+  }
+
+  protected function makeCopies(array $entity): array {
+    $copies = [];
+    $domains = \Civi\Api4\Domain::get(FALSE)->addSelect('id')->execute();
+    foreach ($domains as $domain) {
+      $copy = $entity;
+      $copy['name'] = $entity['name'] . '_' . $domain['id'];
+      $copy['params']['values']['domain_id'] = $domain['id'];
+      $copies[] = $copy;
+    }
+    return $copies;
+  }
+
+  protected function isCopiable(array $entity) {
+    return in_array($entity['entity'], $this->entities) && ($entity['params']['version'] ?? 3) == 4;
+  }
+
+}
-- 
2.25.1