bluetooth_switch2.ps1

[CmdletBinding()] Param ( [Parameter()][ValidateSet('On', 'Off')][string]$BluetoothStatus )

If ((Get-Service bthserv).Status -eq 'Stopped')
{
    Start-Service bthserv
    
}

Add-Type -AssemblyName System.Runtime.WindowsRuntime
$asTaskGeneric = ([System.WindowsRuntimeSystemExtensions].GetMethods() | ? { $_.Name -eq 'AsTask' -and $_.GetParameters().Count -eq 1 -and $_.GetParameters()[0].ParameterType.Name -eq 'IAsyncOperation`1' })[0]

Function Await($WinRtTask, $ResultType)
{
    $asTask = $asTaskGeneric.MakeGenericMethod($ResultType)
    $netTask = $asTask.Invoke($null, @($WinRtTask))
    $netTask.Wait(-1)  | Out-Null
    $netTask.Result
}

[Windows.Devices.Radios.Radio,Windows.System.Devices,ContentType=WindowsRuntime] | Out-Null
[Windows.Devices.Radios.RadioAccessStatus,Windows.System.Devices,ContentType=WindowsRuntime] | Out-Null
Await ([Windows.Devices.Radios.Radio]::RequestAccessAsync()) ([Windows.Devices.Radios.RadioAccessStatus]) | Out-Null
$radios = Await ([Windows.Devices.Radios.Radio]::GetRadiosAsync()) ([System.Collections.Generic.IReadOnlyList[Windows.Devices.Radios.Radio]])
$bluetooth = $radios | ? { $_.Kind -eq 'Bluetooth' }
[Windows.Devices.Radios.RadioState,Windows.System.Devices,ContentType=WindowsRuntime] | Out-Null

if (!$BluetoothStatus)
{
    if ($bluetooth.state -eq 'On')
    {
        $BluetoothStatus = 'Off'
        Write-Output "Turn off bluetooth... " 

    }
    else
    {
        $BluetoothStatus = 'On'
        Write-Output "Turn On bluetooth... " 

    }
}

Await ($bluetooth.SetStateAsync($BluetoothStatus)) ([Windows.Devices.Radios.RadioAccessStatus]) | Out-Null