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function Set-Bluetooth {
    [CmdletBinding()]
    Param (
        [Parameter(Mandatory = $true)]
        [ValidateSet('On', 'Off', 'Reset')]
        [string]
        $State
    )
    begin {
        Add-Type -AssemblyName System.Runtime.WindowsRuntime
    }

    process {
        if ((Get-Service -Name bthserv).Status -eq 'Stopped') { Start-Service -Name bthserv }
    
        $asTaskGeneric = ([System.WindowsRuntimeSystemExtensions].GetMethods() | Where-Object { $_.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 | Where-Object { $_.Kind -eq 'Bluetooth' }
        if ($bluetooth.State -ne $State) {
            switch($State) {
                'Reset' {
                    [Windows.Devices.Radios.RadioState, Windows.System.Devices, ContentType = WindowsRuntime] | Out-Null
                    try {
                        if ((Await ($bluetooth.SetStateAsync('Off')) ([Windows.Devices.Radios.RadioAccessStatus])) -eq 'Allowed') {
                            if ((Await ($bluetooth.SetStateAsync('On')) ([Windows.Devices.Radios.RadioAccessStatus])) -eq 'Allowed') {
                                Write-Host "Bluetooth reset."
                            }
                            else {
                                Write-Host "Bluetooth could not be turned on."
                            }
                        }
                        else {
                            Write-Host "Bluetooth could not be turned off."
                        }
                    }
                    catch {
                        Throw $_
                    }
                    break
                }
                default {
                    [Windows.Devices.Radios.RadioState, Windows.System.Devices, ContentType = WindowsRuntime] | Out-Null
                    try {
                        if ((Await ($bluetooth.SetStateAsync($State)) ([Windows.Devices.Radios.RadioAccessStatus])) -eq 'Allowed') {
                            Write-Host "Bluetooth turned $($State.ToLower())."
                        }
                        else {
                            Write-Host "Bluetooth could not be turned $($State.ToLower())."
                        }
                    }
                    catch {
                        Throw $_
                    }
                }
            }
        }
        else {
            Write-Host "Bluetooth is already $($State.ToLower())."
        }
    }

    end {

    }
}

function Disable-Bluetooth {
    [CmdletBinding()]
    Param ()
    begin {
        Add-Type -AssemblyName System.Runtime.WindowsRuntime
        $State = 'Off'
    }

    process {
        if ((Get-Service -Name bthserv).Status -eq 'Stopped') { Start-Service -Name bthserv }
    
        $asTaskGeneric = ([System.WindowsRuntimeSystemExtensions].GetMethods() | Where-Object { $_.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 | Where-Object { $_.Kind -eq 'Bluetooth' }
        if ($bluetooth.State -ne $State) {
            [Windows.Devices.Radios.RadioState, Windows.System.Devices, ContentType = WindowsRuntime] | Out-Null
            try {
                if ((Await ($bluetooth.SetStateAsync($State)) ([Windows.Devices.Radios.RadioAccessStatus])) -eq 'Allowed') {
                    Write-Host "Bluetooth turned $($State.ToLower())."
                }
                else {
                    Write-Host "Bluetooth could not be turned $($State.ToLower())."
                }
            }
            catch {
                Throw $_
            }
        }
        else {
            Write-Host "Bluetooth is already $($State.ToLower())."
        }
    }

    end {

    }
}

function Enable-Bluetooth {
    [CmdletBinding()]
    Param ()
    begin {
        Add-Type -AssemblyName System.Runtime.WindowsRuntime
        $State = 'On'
    }

    process {
        if ((Get-Service -Name bthserv).Status -eq 'Stopped') { Start-Service -Name bthserv }
    
        $asTaskGeneric = ([System.WindowsRuntimeSystemExtensions].GetMethods() | Where-Object { $_.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 | Where-Object { $_.Kind -eq 'Bluetooth' }
        if ($bluetooth.State -ne $State) {
            [Windows.Devices.Radios.RadioState, Windows.System.Devices, ContentType = WindowsRuntime] | Out-Null
            try {
                if ((Await ($bluetooth.SetStateAsync($State)) ([Windows.Devices.Radios.RadioAccessStatus])) -eq 'Allowed') {
                    Write-Host "Bluetooth turned $($State.ToLower())."
                }
                else {
                    Write-Host "Bluetooth could not be turned $($State.ToLower())."
                }
            }
            catch {
                Throw $_
            }
        }
        else {
            Write-Host "Bluetooth is already $($State.ToLower())."
        }
    }

    end {

    }
}

function Reset-Bluetooth {
    [CmdletBinding()]
    Param ()
    begin {
        Add-Type -AssemblyName System.Runtime.WindowsRuntime
        $State = 'Reset'
    }

    process {
        if ((Get-Service -Name bthserv).Status -eq 'Stopped') { Start-Service -Name bthserv }
    
        $asTaskGeneric = ([System.WindowsRuntimeSystemExtensions].GetMethods() | Where-Object { $_.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 | Where-Object { $_.Kind -eq 'Bluetooth' }
        [Windows.Devices.Radios.RadioState, Windows.System.Devices, ContentType = WindowsRuntime] | Out-Null
        try {
            if ((Await ($bluetooth.SetStateAsync('Off')) ([Windows.Devices.Radios.RadioAccessStatus])) -eq 'Allowed') {
                if ((Await ($bluetooth.SetStateAsync('On')) ([Windows.Devices.Radios.RadioAccessStatus])) -eq 'Allowed') {
                    Write-Host "Bluetooth reset."
                }
                else {
                    Write-Host "Bluetooth could not be turned on."
                }
            }
            else {
                Write-Host "Bluetooth could not be turned off."
            }
        }
        catch {
            Throw $_
        }
    }

    end {

    }
}