From 514aca93eb30e9960429538ea6cd1223e866315a Mon Sep 17 00:00:00 2001
From: Ricardo Mestre <ricardo.mestre@fujitsu.com>
Date: Wed, 27 Nov 2024 09:38:32 +0000
Subject: [PATCH] Fix generation of instance names

---
 CHANGELOG.md                                  |  4 +++
 .../Microsoft365DSC/Modules/M365DSCUtil.psm1  | 36 +++++++------------
 2 files changed, 17 insertions(+), 23 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 230f896151..8c6cef851b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -29,6 +29,10 @@
 * TeamsUpgradePolicy
   * DEPRECATED: Users properties. Use the TeamsUserPolicyAssignment resource
     instead.
+* M365DSCUtil
+  * When exporting generate the instance names of resources with their mandatory
+    keys instead of random GUIDs , this makes exports idempotent again
+    FIXES [#5469](https://github.com/microsoft/Microsoft365DSC/issues/5469)
 * MISC
   * Removed hardcoded Graph urls and replaced by MSCloudLoginAssistant values.
   * Add separate module handling for PowerShell Core.
diff --git a/Modules/Microsoft365DSC/Modules/M365DSCUtil.psm1 b/Modules/Microsoft365DSC/Modules/M365DSCUtil.psm1
index 93e08311d2..ee5301bb56 100644
--- a/Modules/Microsoft365DSC/Modules/M365DSCUtil.psm1
+++ b/Modules/Microsoft365DSC/Modules/M365DSCUtil.psm1
@@ -3204,14 +3204,11 @@ function Update-M365DSCDependencies
         [Parameter()]
         [Switch]
         $ValidateOnly,
-
         [Parameter()]
         [ValidateSet("CurrentUser", "AllUsers")]
         $Scope = "AllUsers"
     )
 
-    $isPSResourceGetInstalled = Get-Module -Name Microsoft.PowerShell.PSResourceGet -ListAvailable
-
     try
     {
         $Global:MaximumFunctionCount = 32767
@@ -3261,14 +3258,14 @@ function Update-M365DSCDependencies
                     }
                     if (-not $errorFound)
                     {
-                        if (($dependency.PowerShellCore -eq $false -or $dependency.InstallLocation -eq "WindowsPowerShell") -and $Script:IsPowerShellCore)
+                        if (-not $dependency.PowerShellCore -and $Script:IsPowerShellCore)
                         {
-                            Write-Warning "The dependency {$($dependency.ModuleName)} requires Windows PowerShell for installation. Please run Update-M365DSCDependencies in Windows PowerShell."
+                            Write-Warning "The dependency {$($dependency.ModuleName)} does not support PowerShell Core. Please run Update-M365DSCDependencies in Windows PowerShell."
                             continue
                         }
                         elseif ($dependency.PowerShellCore -and -not $Script:IsPowerShellCore)
                         {
-                            Write-Warning "The dependency {$($dependency.ModuleName)} requires PowerShell Core for installation. Please run Update-M365DSCDependencies in PowerShell Core."
+                            Write-Warning "The dependency {$($dependency.ModuleName)} requires PowerShell Core. Please run Update-M365DSCDependencies in PowerShell Core."
                             continue
                         }
 
@@ -3279,15 +3276,7 @@ function Update-M365DSCDependencies
                             Remove-Module 'Microsoft.Graph.Authentication' -Force -ErrorAction SilentlyContinue
                         }
                         Remove-Module $dependency.ModuleName -Force -ErrorAction SilentlyContinue
-
-                        if ($null -eq $isPSResourceGetInstalled)
-                        {
-                            Install-Module $dependency.ModuleName -RequiredVersion $dependency.RequiredVersion -AllowClobber -Force -Scope $Scope
-                        }
-                        else
-                        {
-                            Install-PSResource -Name $dependency.ModuleName -Version $dependency.RequiredVersion -AcceptLicense -Scope $Scope -Reinstall -TrustRepository
-                        }
+                        Install-Module $dependency.ModuleName -RequiredVersion $dependency.RequiredVersion -AllowClobber -Force -Scope "$Scope"
                     }
                 }
 
@@ -3787,13 +3776,13 @@ function Get-M365DSCExportContentForResource
             Import-Module $Resource.Path -Force
             $moduleInfo = Get-Command -Module $ModuleFullName -ErrorAction SilentlyContinue
             $cmdInfo = $moduleInfo | Where-Object -FilterScript {$_.Name -eq 'Get-TargetResource'}
-            $Keys = $cmdInfo.Parameters.Keys
+            $Keys = $cmdInfo.Parameters.Values.Where({ $_.ParameterSets.Values.IsMandatory }).Name
         }
     }
     else
     {
         $cmdInfo = $moduleInfo | Where-Object -FilterScript {$_.Name -eq 'Get-TargetResource'}
-        $Keys = $cmdInfo.Parameters.Keys
+        $Keys = $cmdInfo.Parameters.Values.Where({ $_.ParameterSets.Values.IsMandatory }).Name
     }
 
     if ($Keys.Contains('IsSingleInstance'))
@@ -3840,9 +3829,14 @@ function Get-M365DSCExportContentForResource
     {
         $primaryKey = $Results.UserPrincipalName
     }
-    elseif ($Keys.Contains('User'))
+
+    if ([String]::IsNullOrEmpty($primaryKey) -and `
+        -not $Keys.Contains('IsSingleInstance'))
     {
-        $primaryKey = $Results.User
+        foreach ($Key in $Keys)
+        {
+            $primaryKey += $Results.$Key
+        }
     }
 
     $instanceName = $ResourceName
@@ -3850,10 +3844,6 @@ function Get-M365DSCExportContentForResource
     {
         $instanceName += "-$primaryKey"
     }
-    elseif (-not $Keys.Contains('IsSingleInstance'))
-    {
-        $instanceName += "-" + (New-Guid).ToString()
-    }
 
     if ($Results.ContainsKey('Workload'))
     {