PortValhalla/scripts/Windows/Scripts/PowerManagement.ps1

using namespace Microsoft.Win32;

$null = New-Module {
    . "$PSScriptRoot/Scripting.ps1";
    [RegistryKey] $key = $null;
    $runOncePath = "HKLM:\Software\Microsoft\Windows\CurrentVersion\RunOnce";
    $runOnceName = "PortValhalla";

    <#
        .SYNOPSIS
        Gets the reghistry key containing the `RunOnce` commands.
    #>
    function Get-RunOnceKey {
        Get-Item $runOncePath;
    }

    <#
        .SYNOPSIS
        Registers a task to run the setup once after the next reboot.

        .PARAMETER UserKey
        The regtistry key of the user to register the task for.
    #>
    function Register-Setup {
        param(
            [RegistryKey] $UserKey
        )

        $key = Get-RunOnceKey $UserKey;

        Set-ItemProperty -Path $key.PSPath -Name $runOnceName -Type "ExpandString" -Value (
            "pwsh -Command " +
            "`$env:PWSH_PATH = $(ConvertTo-Injection $env:PWSH_PATH);" +
            "`$env:INSTALLER_SCRIPT = $(ConvertTo-Injection $env:INSTALLER_SCRIPT);" +
            "`$env:CONFIG_MODULE = $(ConvertTo-Injection $env:CONFIG_MODULE);" +
            "& `$env:INSTALLER_SCRIPT;"
        );

        $key.Handle.Close();
    }

    <#
        .SYNOPSIS
        Reboots the machine intermediately and restarts the setup after the next login.
    #>
    function Restart-Intermediate {
        Register-Setup;
        Restart-Computer;
    }
}