Update Clear-CCMCache.ps1

Author: virtualox

Clear-CCMCache.ps1

@@ -37,6 +37,10 @@ This script is designed for administrators and developers who need to manage the
 
 #>
 
+# Ensure the script runs with administrative privileges
+#Requires -RunAsAdministrator
+
+[CmdletBinding(PositionalBinding=$False)]
 param(
     [switch]$Detect,
     [switch]$Clean,
@@ -71,33 +75,103 @@ if (-not $Detect -and -not $Clean) {
     $Clean = $true
 }
 
+# Check PowerShell version
+if ($PSVersionTable.PSVersion.Major -ge 7) {
+    Write-Error "This script does not support PowerShell 7.x. Please use Windows PowerShell 5.1. Exiting..."
+    exit 1
+}
+
 # Get CCMCache path
-$CachePath = ([wmi]"ROOT\ccm\SoftMgmtAgent:CacheConfig.ConfigKey='Cache'").Location
+try {
+    $CachePath = (Get-WmiObject -Namespace "ROOT\ccm\SoftMgmtAgent" -Class "CacheConfig" -Filter "ConfigKey='Cache'").Location
+} catch {
+    Write-Error "Failed to retrieve CCMCache path. Exiting script."
+    exit 1
+}
+
+# Test if the $CachePath was successfully retrieved and exit script if not
+if ([string]::IsNullOrEmpty($CachePath)) {
+    Write-Error "CachePath is null or empty. Exiting script."
+    exit 1
+}
 
 # Get items not referenced for more than the specified days
-$OldCache = Get-WmiObject -Query "SELECT * FROM CacheInfoEx" -Namespace "ROOT\ccm\SoftMgmtAgent" | Where-Object { ([datetime]::Now - ([System.Management.ManagementDateTimeConverter]::ToDateTime($_.LastReferenced))).Days -gt $Days }
+$OldCache = Get-WmiObject -Query "SELECT * FROM CacheInfoEx" -Namespace "ROOT\ccm\SoftMgmtAgent" | Where-Object {
+    ($([datetime]::Now) - ([System.Management.ManagementDateTimeConverter]::ToDateTime($_.LastReferenced))).Days -gt $Days
+}
 
 if ($Detect) {
-    # Report old items
-    if ($OldCache) { $false } else { $true }
+    if ($OldCache) {
+        Write-Output "Old and unused content detected:"
+        $OldCache | Select-Object Location, LastReferenced
+    } else {
+        Write-Output "No old or unused content found."
+    }
 }
 
 if ($Clean) {
-    # Delete items on disk
-    $OldCache | ForEach-Object { Remove-Item -Path $_.Location -Recurse -Force -ErrorAction SilentlyContinue }
-
-    # Delete items in WMI
-    $OldCache | Remove-WmiObject
+    if ($OldCache) {
+        # Delete items on disk
+        $OldCache | ForEach-Object { 
+            try {
+                Remove-Item -Path $_.Location -Recurse -Force -ErrorAction Stop 
+                Write-Output "Deleted: $_.Location"
+            } catch {
+                Write-Warning "Failed to delete: $_.Location"
+            }
+        }
+
+        # Delete items in WMI
+        $OldCache | ForEach-Object {
+            try {
+                $_ | Remove-WmiObject -ErrorAction Stop
+                Write-Output "Removed WMI object: $_.Location"
+            } catch {
+                Write-Warning "Failed to remove WMI object: $_.Location"
+            }
+        }
+    } else {
+        Write-Output "No old or unused content to clean."
+    }
 
     # Get all cached items from disk
-    $CacheFoldersDisk = (Get-ChildItem $CachePath).FullName
+    try {
+        $CacheFoldersDisk = Get-ChildItem -Path $CachePath -ErrorAction Stop | Select-Object -ExpandProperty FullName
+    } catch {
+        Write-Error "Failed to retrieve cached items from disk. Exiting script."
+        exit 1
+    }
 
     # Get all cached items from WMI
-    $CacheFoldersWMI = Get-WmiObject -Query "SELECT * FROM CacheInfoEx" -Namespace "ROOT\ccm\SoftMgmtAgent"
+    try {
+        $CacheFoldersWMI = Get-WmiObject -Query "SELECT * FROM CacheInfoEx" -Namespace "ROOT\ccm\SoftMgmtAgent" | Select-Object -ExpandProperty Location
+    } catch {
+        Write-Error "Failed to retrieve cached items from WMI. Exiting script."
+        exit 1
+    }
 
     # Remove orphaned folders from disk
-    $CacheFoldersDisk | ForEach-Object { if ($_ -notin $CacheFoldersWMI.Location) { Remove-Item -Path $_ -Recurse -Force -ErrorAction SilentlyContinue } }
+    $OrphanedFolders = $CacheFoldersDisk | Where-Object { $_ -notin $CacheFoldersWMI }
+    foreach ($folder in $OrphanedFolders) {
+        try {
+            Remove-Item -Path $folder -Recurse -Force -ErrorAction Stop
+            Write-Output "Removed orphaned folder from disk: $folder"
+        } catch {
+            Write-Warning "Failed to remove orphaned folder: $folder"
+        }
+    }
 
     # Remove orphaned WMI objects
-    $CacheFoldersWMI | ForEach-Object { if ($_.Location -notin $CacheFoldersDisk) { $_ | Remove-WmiObject } }
+    $OrphanedWMIObjects = $CacheFoldersWMI | Where-Object { $_ -notin $CacheFoldersDisk }
+    foreach ($wmiObj in $OrphanedWMIObjects) {
+        try {
+            $wmiObject = Get-WmiObject -Namespace "ROOT\ccm\SoftMgmtAgent" -Query "SELECT * FROM CacheInfoEx WHERE Location='$wmiObj'"
+            if ($wmiObject) {
+                $wmiObject | Remove-WmiObject -ErrorAction Stop
+                Write-Output "Removed orphaned WMI object: $wmiObj"
+            }
+        } catch {
+            Write-Warning "Failed to remove orphaned WMI object: $wmiObj"
+        }
+    }
 }