winutil/functions/public/Invoke-WPFUltimatePerformance.ps1

Function Invoke-WPFUltimatePerformance {
    <#

    .SYNOPSIS
        Enables or disables the Ultimate Performance power scheme based on its GUID.

    .PARAMETER State
        Specifies whether to "Enable" or "Disable" the Ultimate Performance power scheme.

    #>
    param($State)

    try {
        # GUID of the Ultimate Performance power plan
        $ultimateGUID = "e9a42b02-d5df-448d-aa00-03f14749eb61"

        if ($State -eq "Enable") {
            # Duplicate the Ultimate Performance power plan using its GUID
            $duplicateOutput = powercfg /duplicatescheme $ultimateGUID

            $guid = $null
            $nameFromFile = "ChrisTitus - Ultimate Power Plan"
            $description = "Ultimate Power Plan, added via WinUtils"

            # Extract the new GUID from the duplicateOutput
            foreach ($line in $duplicateOutput) {
                if ($line -match "\b[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}\b") {
                    $guid = $matches[0]  # $matches[0] will contain the first match, which is the GUID
                    Write-Output "GUID: $guid has been extracted and stored in the variable."
                    break
                }
            }

            if (-not $guid) {
                Write-Output "No GUID found in the duplicateOutput. Check the output format."
                exit 1
            }

            # Change the name of the power plan and set its description
            $changeNameOutput = powercfg /changename $guid "$nameFromFile" "$description"
            Write-Output "The power plan name and description have been changed. Output:"
            Write-Output $changeNameOutput

            # Set the duplicated Ultimate Performance plan as active
            $setActiveOutput = powercfg /setactive $guid
            Write-Output "The power plan has been set as active. Output:"
            Write-Output $setActiveOutput

            Write-Host "> Ultimate Performance plan installed and set as active."

        } elseif ($State -eq "Disable") {
            # Check if the Ultimate Performance plan is installed by GUID
            $installedPlan = powercfg -list | Select-String -Pattern $ultimateGUID

            if ($installedPlan) {
                # Extract the GUID of the installed Ultimate Performance plan
                $ultimatePlanGUID = $installedPlan.Line.Split()[3]

                # Set a different power plan as active before deleting the Ultimate Performance plan
                $balancedPlanGUID = (powercfg -list | Select-String -Pattern "Balanced").Line.Split()[3]
                powercfg -setactive $balancedPlanGUID

                # Delete the Ultimate Performance plan by GUID
                powercfg -delete $ultimatePlanGUID

                Write-Host "Ultimate Performance plan has been uninstalled."
                Write-Host "> Balanced plan is now active."
            } else {
                Write-Host "Ultimate Performance plan is not installed."
            }
        }
    } catch {
        Write-Error "Error occurred: $_"
    }
}