From 9c7818ea85e4656fab79d4340ba308cabd06db01 Mon Sep 17 00:00:00 2001
From: Michal Pekacki <michal.pekacki@burohappold.com>
Date: Wed, 2 Sep 2026 12:12:08 +0200
Subject: [PATCH] upgade placement settings added

---
 BHoMUpgrades/CustomUpgrades/v93.cs | 57 ++++++++++++++++++++++++++++++
 1 file changed, 57 insertions(+)

diff --git a/BHoMUpgrades/CustomUpgrades/v93.cs b/BHoMUpgrades/CustomUpgrades/v93.cs
index 41af7c4..9d339fe 100644
--- a/BHoMUpgrades/CustomUpgrades/v93.cs
+++ b/BHoMUpgrades/CustomUpgrades/v93.cs
@@ -21,6 +21,7 @@
  */
 
 using BH.oM.Versioning;
+using System;
 using System.Collections.Generic;
 
 namespace BH.Upgraders
@@ -114,6 +115,62 @@ public static Dictionary<string, object> UpgradeAreaTagSettings(Dictionary<strin
             return newVersion;
         }
 
+        /***************************************************/
+
+        [VersioningTarget("BH.Revit.oM.ElementRelationships.PlacementSettings")]
+        public static Dictionary<string, object> UpgradePlacementSettings(Dictionary<string, object> oldVersion)
+        {
+            if (oldVersion == null)
+                return null;
+
+            Dictionary<string, object> newVersion = new Dictionary<string, object>(oldVersion);
+
+            if (newVersion.ContainsKey("PlacementCollections"))
+            {
+                newVersion.Remove("ElementPlacementSettings");
+                return newVersion;
+            }
+
+            if (!newVersion.TryGetValue("ElementPlacementSettings", out object oldPlacementsObject))
+                return newVersion;
+
+            List<object> placements = new List<object>();
+            IEnumerable<object> oldPlacements = oldPlacementsObject as IEnumerable<object>;
+            if (oldPlacements != null)
+            {
+                foreach (object item in oldPlacements)
+                {
+                    if (item is Dictionary<string, object> placementDict)
+                    {
+                        if (placementDict.TryGetValue("_t", out object type) &&
+                            type?.ToString() == "BH.Revit.oM.ElementRelationships.ElementPlacementSettings")
+                        {
+                            placementDict["_t"] = "BH.Revit.oM.ElementRelationships.ElementPlacement";
+                        }
+
+                        placements.Add(placementDict);
+                    }
+                    else
+                    {
+                        placements.Add(item);
+                    }
+                }
+            }
+
+            Dictionary<string, object> defaultCollection = new Dictionary<string, object>
+            {
+                { "_t", "BH.Revit.oM.ElementRelationships.PlacementCollection" },
+                { "BHoM_Guid", Guid.NewGuid() },
+                { "Name", "Default Collection" },
+                { "Placements", placements }
+            };
+
+            newVersion["PlacementCollections"] = new List<object> { defaultCollection };
+            newVersion.Remove("ElementPlacementSettings");
+
+            return newVersion;
+        }
+
         /***************************************************/
         /****             Private Methods               ****/
         /***************************************************/