From a352a02b2e4b686a786b46bc0c5e109b1ebc55ea Mon Sep 17 00:00:00 2001
From: myname <mymail@example.com>
Date: Sun, 26 Mar 2023 17:01:46 -0500
Subject: [PATCH] Bulk Actions for setting a chain of parent child
 relationships in the order of images selected. Does not support setting
 multiple children to one parent in bulk.

---
 core/permissions.php           |  1 +
 core/userclass.php             |  1 +
 ext/bulk_parent_child/info.php | 16 +++++++++++
 ext/bulk_parent_child/main.php | 51 ++++++++++++++++++++++++++++++++++
 4 files changed, 69 insertions(+)
 create mode 100644 ext/bulk_parent_child/info.php
 create mode 100644 ext/bulk_parent_child/main.php

diff --git a/core/permissions.php b/core/permissions.php
index 351fa2a9..28142259 100644
--- a/core/permissions.php
+++ b/core/permissions.php
@@ -109,4 +109,5 @@ abstract class Permissions
     public const BULK_IMPORT = "bulk_import";
     public const BULK_EXPORT = "bulk_export";
     public const BULK_DOWNLOAD = "bulk_download";
+	public const BULK_PARENT_CHILD = "bulk_parent_child";
 }
diff --git a/core/userclass.php b/core/userclass.php
index a15d1767..a68ebb1b 100644
--- a/core/userclass.php
+++ b/core/userclass.php
@@ -199,6 +199,7 @@ new UserClass("admin", "base", [
     Permissions::BULK_IMPORT =>true,
     Permissions::BULK_EXPORT =>true,
     Permissions::BULK_DOWNLOAD => true,
+	Permissions::BULK_PARENT_CHILD => true,
 
     Permissions::SET_PRIVATE_IMAGE => true,
     Permissions::SET_OTHERS_PRIVATE_IMAGES => true,
diff --git a/ext/bulk_parent_child/info.php b/ext/bulk_parent_child/info.php
new file mode 100644
index 00000000..f4a6b673
--- /dev/null
+++ b/ext/bulk_parent_child/info.php
@@ -0,0 +1,16 @@
+<?php
+
+declare(strict_types=1);
+
+
+class BulkParentChildInfo extends ExtensionInfo
+{
+    public const KEY = "bulk_parent_child";
+
+    public string $key = self::KEY;
+    public string $name = "Bulk Parent Child";
+    public array $authors = ["Flatty"=>""];
+    public string $license = self::LICENSE_WTFPL;
+    public string $description = "Allows bulk setting of parent-child relationships, in order of manual selection";
+    public array $dependencies = [BulkActionsInfo::KEY];
+}
diff --git a/ext/bulk_parent_child/main.php b/ext/bulk_parent_child/main.php
new file mode 100644
index 00000000..9362debd
--- /dev/null
+++ b/ext/bulk_parent_child/main.php
@@ -0,0 +1,51 @@
+<?php
+
+declare(strict_types=1);
+
+class BulkParentChildConfig
+{
+}
+class BulkParentChildException extends BulkActionException
+{
+}
+
+class BulkParentChild extends Extension
+{
+    private const PARENT_CHILD_ACTION_NAME = "bulk_parent_child";
+
+    public function onInitExt(InitExtEvent $event)
+    {
+        global $config;
+    }
+
+    public function onBulkActionBlockBuilding(BulkActionBlockBuildingEvent $event)
+    {
+        global $user;
+
+        if ($user->can(Permissions::BULK_PARENT_CHILD)) {
+            $event->add_action(BulkParentChild::PARENT_CHILD_ACTION_NAME, "Set Parent Child");
+        }
+    }
+
+    public function onSetupBuilding(SetupBuildingEvent $event)
+    {
+        $sb = $event->panel->create_new_block("Bulk Parent Child");
+        $sb->start_table();
+        $sb->end_table();
+    }
+
+    public function onBulkAction(BulkActionEvent $event)
+    {
+        global $user, $page, $config;
+		if ($user->can(Permissions::BULK_PARENT_CHILD)&&
+            ($event->action == BulkParentChild::PARENT_CHILD_ACTION_NAME)) {
+				 $prev_id = null;
+				 foreach ($event->items as $image) {
+					 if ($prev_id != null) {
+						send_event(new ImageRelationshipSetEvent($image->id, $prev_id));
+					 }
+					 $prev_id = $image->id;
+				 }
+			}
+    }
+}