Added Remove-TeamViewerDuplicateDevicesV2 example script

The script searches for duplicate devices (where duplicate = have the same alias)
and removes the devices with an older last-seen timestamp.

Resolves JIRA task TEAM-60324.

Remove-TeamViewerDuplicateDevicesV2/README.md

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+# Remove-TeamViewerDuplicateDevicesV2
+
+Removes TeamViewer devices (MDv2) that have a duplicate counterpart in the same company.
+
+The script fetches a list of TeamViewer devices (MDv2) of the TeamViewer company that corresponds to a given API token.
+The list will be searched for devices that have the same name (alias). Duplicate devices will be sorted by their last seen timestamp,
+and the older ones will be removed.
+
+## Prerequisites
+
+This script requires the `TeamViewerPS` powershell module to be installed in at least Version 2.1.0.
+
+```powershell
+Install-Module TeamViewerPS
+```
+
+## Examples
+
+### List removal candidate devices
+
+```powershell
+Remove-TeamViewerDuplicateDevicesV2 -WhatIf
+```
+
+### Remove old duplicate devices. User needs to confirm
+
+```powershell
+Remove-TeamViewerDuplicateDevicesV2
+```
+
+### Remove old duplicate devices without further confirmation
+
+```powershell
+Remove-TeamViewerDuplicateDevicesV2 -Force
+```
+
+## More help
+
+To get further help about the script and its parameters, execute the
+`Get-Help` PowerShell cmdlet:
+
+```powershell
+Get-Help -Detailed .\Remove-TeamViewerDuplicateDevicesV2.ps1
+```

Remove-TeamViewerDuplicateDevicesV2/Remove-TeamViewerDuplicateDevicesV2.Tests.ps1

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+# Copyright (c) 2019-2024 TeamViewer Germany GmbH
+# See file LICENSE
+
+BeforeAll {
+    $testApiToken = [securestring]@{}
+
+    . "$PSScriptRoot\Remove-TeamViewerDuplicateDevicesV2.ps1" -ApiToken $testApiToken -InformationAction SilentlyContinue
+
+    Mock Get-TeamViewerCompanyManagedDevice { @(
+            [pscustomobject]@{ TeamViewerId = '123456789'; Name = 'unique device'; LastSeenAt = [datetime]'2024-12-16' },
+            [pscustomobject]@{ TeamViewerId = 'older device A'; Name = 'duplicate device A'; LastSeenAt = [datetime]'2024-12-17' },
+            [pscustomobject]@{ TeamViewerId = 'online device A'; Name = 'duplicate device A'; IsOnline = $True },
+            [pscustomobject]@{ TeamViewerId = 'newer device B'; Name = 'duplicate device B'; LastSeenAt = [datetime]'2024-12-18' },
+            [pscustomobject]@{ TeamViewerId = 'newer device A'; Name = 'duplicate device A'; LastSeenAt = [datetime]'2024-12-19' },
+            [pscustomobject]@{ TeamViewerId = 'older device B'; Name = 'duplicate device B'; LastSeenAt = [datetime]'2024-12-17' }
+        ) }
+
+    Mock Remove-TeamViewerManagedDeviceManagement -RemoveParameterValidation 'Device' {}
+}
+
+Describe 'Remove-TeamViewerDuplicateDevicesV2' {
+
+    It 'Should not remove any devices if -WhatIf parameter has been set' {
+        $result = (Remove-TeamViewerDuplicateDevicesV2 -force:$false -WhatIf)
+        $result | Should -HaveCount 3
+        $result[0].TeamViewerId | Should -Be 'older device A'
+        $result[0].Status | Should -Be 'Unchanged'
+        $result[1].TeamViewerId | Should -Be 'newer device A'
+        $result[1].Status | Should -Be 'Unchanged'
+        $result[2].TeamViewerId | Should -Be 'older device B'
+        $result[2].Status | Should -Be 'Unchanged'
+
+        Assert-MockCalled Get-TeamViewerCompanyManagedDevice -Times 1 -Scope It
+        Assert-MockCalled Remove-TeamViewerManagedDeviceManagement -Times 0 -Scope It
+    }
+
+    It 'Should remove duplicate devices with an older last-seen timestamp' {
+        $result = (Remove-TeamViewerDuplicateDevicesV2 -force:$true)
+        $result | Should -HaveCount 3
+        $result[0].TeamViewerId | Should -Be 'older device A'
+        $result[0].Status | Should -Be 'Removed'
+        $result[1].TeamViewerId | Should -Be 'newer device A'
+        $result[1].Status | Should -Be 'Removed'
+        $result[2].TeamViewerId | Should -Be 'older device B'
+        $result[2].Status | Should -Be 'Removed'
+
+        Assert-MockCalled Get-TeamViewerCompanyManagedDevice -Times 1 -Scope It
+        Assert-MockCalled Remove-TeamViewerManagedDeviceManagement -Times 3 -Scope It
+    }
+}

Remove-TeamViewerDuplicateDevicesV2/Remove-TeamViewerDuplicateDevicesV2.ps1

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+<#
+ .SYNOPSIS
+    Removes TeamViewer duplicate devices (MDv2) based on their alias.
+
+ .DESCRIPTION
+    Removes TeamViewer devices (MDv2) that have a duplicate counterpart in the same company.
+    The script fetches a list of TeamViewer devices (MDv2) of the TeamViewer company that corresponds to a given API token.
+    The list will be searched for devices that have the same name (alias). Duplicate devices will be sorted by their last seen timestamp,
+    and the older ones will be removed.
+
+ .PARAMETER ApiToken
+    The TeamViewer API token to use.
+    Must be a user access token.
+    The token requires the following access permissions: company admin
+
+ .PARAMETER Force
+    If set, the script will NOT ask the user for confirmation of the removal.
+    The default value is `false`, causing the script to ask the user one more time before starting to remove devices.
+
+ .EXAMPLE
+    Remove-TeamViewerDuplicateDevicesV2'
+
+ .EXAMPLE
+    Remove-TeamViewerDuplicateDevicesV2 -WhatIf
+
+ .EXAMPLE
+    Remove-TeamViewerDuplicateDevicesV2 -Force
+
+ .NOTES
+    This script requires the TeamViewerPS module to be installed.
+    This can be done using the following command:
+
+    ```
+    Install-Module TeamViewerPS
+    ```
+
+    Copyright (c) 2019-2024 TeamViewer Germany GmbH
+    See file LICENSE
+    Version 2.1
+#>
+
+[CmdletBinding(SupportsShouldProcess = $true)]
+param(
+   [Parameter(Mandatory = $true)]
+   [securestring] $ApiToken,
+
+   [switch] $Force = $false
+)
+
+if (-Not $MyInvocation.BoundParameters.ContainsKey('ErrorAction')) {
+   $script:ErrorActionPreference = 'Stop'
+}
+if (-Not $MyInvocation.BoundParameters.ContainsKey('InformationAction')) {
+   $script:InformationPreference = 'Continue'
+}
+
+function Install-TeamViewerModule {
+   $module = Get-Module TeamViewerPS
+
+   if (!$module) {
+      Install-Module TeamViewerPS
+   }
+   elseif ($module.Version -lt '2.1.0') {
+      Update-Module TeamViewerPS
+   }
+}
+
+function Remove-TeamViewerDuplicateDevicesV2 {
+   [CmdletBinding(SupportsShouldProcess, ConfirmImpact = 'Medium')]
+   param([bool]$force, [bool]$is_verbose)
+
+   $devices = @(Get-TeamViewerCompanyManagedDevice -ApiToken $ApiToken)
+
+   $name_to_device_map = @{}
+   ForEach ($device in $devices) {
+      if ($null -eq $name_to_device_map[$device.Name]) {
+         $name_to_device_map[$device.Name] = New-Object System.Collections.Generic.List[System.Object]
+      }
+      $name_to_device_map[$device.Name].Add($device)
+   }
+
+   $name_to_device_map_sorted = @{}
+   $name_to_device_map.GetEnumerator() | ForEach-Object {
+      # Sort duplicate devices by LastSeenAt.
+      # Older devices should go first.
+      $offline_duplicate_devices = @(($_.Value | Where-Object { !$_.IsOnline -and $_.LastSeenAt }) | Sort-Object { $_.LastSeenAt })
+
+      if ($offline_duplicate_devices.Count -gt 0) {
+         if ($offline_duplicate_devices.Count -lt $_.Value.Count) {
+            # There were some online duplicate devices --> remove all of the offline
+            $name_to_device_map_sorted.Add($_.Key, $offline_duplicate_devices)
+         }
+         else {
+            # No online duplicate devices --> the last one is the "good" device --> skip it
+            $devices_to_remove = $offline_duplicate_devices | Select-Object -SkipLast 1
+            if ($null -ne $devices_to_remove) {
+               $name_to_device_map_sorted.Add($_.Key, $devices_to_remove)
+            }
+         }
+      }
+   }
+
+   if ($is_verbose) {
+      Write-Information 'All company devices:'
+      Write-Information ($devices | Format-List | Out-String)
+   }
+
+   if (!$name_to_device_map_sorted.Count) {
+      Write-Information 'No duplicate devices found. Exiting...'
+
+      exit
+   }
+
+   Write-Information 'Found the following devices that have a duplicate alias to other devices in your company, and have been offline for longer:'
+   Write-Information ($name_to_device_map_sorted | Format-List | Out-String)
+
+   if ($name_to_device_map_sorted.Count -gt 0 -And
+      !$WhatIfPreference -And
+      !$force -And
+      !$PSCmdlet.ShouldContinue('Do you really want to remove those devices?', 'Remove managed devices')) {
+      Write-Information 'Aborting...'
+
+      exit
+   }
+
+   $name_to_device_map_sorted.GetEnumerator() | ForEach-Object {
+      $duplicate_devices_to_be_deleted = $_.Value
+
+      ForEach ($device_to_be_deleted in $duplicate_devices_to_be_deleted) {
+         $status = 'Unchanged'
+
+         if ($force -Or $PSCmdlet.ShouldProcess($device_to_be_deleted.TeamViewerId, 'Remove device')) {
+            try {
+               Remove-TeamViewerManagedDeviceManagement -ApiToken $ApiToken -Device $device_to_be_deleted
+
+               $status = 'Removed'
+            }
+            catch {
+               Write-Warning "Failed to remove device '$($device_to_be_deleted.Name)' with TeamViewerID: '$($device_to_be_deleted.TeamViewerId)'"
+
+               $status = 'Failed'
+            }
+         }
+         Write-Output ([pscustomobject]@{
+               Name         = $device_to_be_deleted.Name
+               ManagementId = $device_to_be_deleted.Id
+               LastSeen     = $device_to_be_deleted.LastSeenAt
+               TeamViewerID = $device_to_be_deleted.TeamViewerId
+               Status       = $status
+            })
+      }
+   }
+}
+
+if ($MyInvocation.InvocationName -ne '.') {
+   Install-TeamViewerModule
+
+   $is_verbose = $PSBoundParameters.ContainsKey('Verbose')
+
+   Remove-TeamViewerDuplicateDevicesV2 -force $Force -is_verbose $is_verbose
+}