From 1a3482c310eed9a06240c29a413d77fd0d18f65a Mon Sep 17 00:00:00 2001
From: Torsten Brendgen <torsten.brendgen@microsoft.com>
Date: Thu, 3 Apr 2025 10:07:39 +0200
Subject: [PATCH] Initial

---
 Merge-ConfigurationData.ps1 | 72 +++++++++++++++++++++++++++++++++++++
 1 file changed, 72 insertions(+)
 create mode 100644 Merge-ConfigurationData.ps1

diff --git a/Merge-ConfigurationData.ps1 b/Merge-ConfigurationData.ps1
new file mode 100644
index 0000000..66aa2e9
--- /dev/null
+++ b/Merge-ConfigurationData.ps1
@@ -0,0 +1,72 @@
+function Merge-ConfigurationData {
+    [CmdletBinding()]
+    Param(
+        [Parameter(Mandatory=$true,ParameterSetName="Data")]
+        [System.Collections.Hashtable]
+        $Template,
+        [Parameter(Mandatory=$true,ParameterSetName="Data")]
+        [System.Collections.Hashtable]
+        $Deployment,
+        [Parameter(Mandatory=$true,ParameterSetName="FilePath")]
+        [System.String]
+        $TemplateFilePath,
+        [Parameter(Mandatory=$true,ParameterSetName="FilePath")]
+        [System.String]
+        $DeploymentFilePath,
+        [Parameter(Mandatory=$false)]        
+        [System.Collections.Hashtable]
+        $Output
+    )
+
+    if($PSCmdlet.ParameterSetName -eq "FilePath"){
+        $Template = Import-PowerShellDataFile -Path $TemplateFilePath
+        $Deployment = Import-PowerShellDataFile -Path $DeploymentFilePath
+    }
+    
+    if($Output -eq $null){
+        $Output = $Deployment
+    }
+
+    foreach($Property in $Template.GetEnumerator()){
+        if($Property.Value -is [System.Collections.Hashtable]){
+            Write-Verbose "Key [$($Property.Name)] is a Hashtable"
+            if($Deployment.$($Property.Name) -ne $null){
+                Write-Verbose "Key [$($Property.Name)] is present in Deployment Data"
+                $Output.($Property.Name) = Merge-ConfigurationData -Template $Template.$($Property.Name) -Deployment $Deployment.$($Property.Name) -Output $Output.$($Property.Name)
+            }else{
+                Write-Verbose "Key [$($Property.Name)] is not present in Deployment Data"
+                $Output.Add($($Property.Name),$Template.$($Property.Name))
+            }
+        }elseif($Property.Value -is [System.Array]){
+            Write-Verbose "$($Property.Name) is ein Array"
+            Write-Verbose "Total Items in Template Array [$($Property.Value.Count)]"
+            Write-Verbose "Total Items in Deployment Array [$($Deployment.$($Property.Name).Count)]"
+            if($Deployment.$($Property.Name) -ne $null){
+                Write-Verbose "Array is defined in Deployment"
+                for($i=0;$i -lt $Property.Value.Count; $i++){ 
+                    
+                    $SearchItem = $($Property.Value[$i].GetEnumerator() | Where-Object {($_.Value -is [String]) -and ($_.Name -like "*Name")})[0]
+                    if($($Deployment.$($Property.Name) | ? { $_.($SearchItem.Name) -eq $SearchItem.Value })){
+                        Merge-ConfigurationData -Template $Property.Value[$i] -Deployment $($Deployment.$($Property.Name) | ? { $_.($SearchItem.Name) -eq $SearchItem.Value }) -Output $($Output.$($Property.Name) | ? { $_.($SearchItem.Name) -eq $SearchItem.Value }) | Out-Null
+                    }else{
+                        Write-Verbose "Pair $($Key.Name) - $($Key.Value) not present"
+                        $Output.$($Property.Name) += $Property.Value[$i]
+                    }
+                }
+            }else{
+                Write-Verbose "Array is not defined in Deployment"
+                $Output.$($Property.Name) = $Template.$($Property.Name)
+            }
+        }else{
+            Write-Verbose "$($Property.Name) is a String or Integer Value"
+            if($Deployment.$($Property.Name) -eq $null){
+
+                $Output.Add($Property.Name,$Template.($Property.Name))
+
+            }elseif($Deployment.$($Property.Name) -ne $Property.Value){
+
+            }
+        }
+    }
+    return $Output
+}
\ No newline at end of file