Powershell script to configure BIOS Aut-On settings

Configure-AutoOn.ps1

param(
    [switch]$Clear, 
    [string]$Time, 
    [int]$Window,
    [string[]]$Days
)

function Get-AutoOn(){
    $object = New-Object -TypeName PSObject
    try {
        $systemInfo = (gwmi -class win32_ComputerSystem -Namespace "root\cimv2" -ErrorAction stop).Manufacturer.Trim().ToLower()

        if ($systemInfo -eq "hewlett-packard"){
        
            $enabledDays = New-Object System.Collections.ArrayList
            $biosSettings = Get-WmiObject HP_BIOSSetting -Namespace "root\HP\InstrumentedBIOS" -ErrorAction stop
            $powerOnTime = ($biosSettings | Where-Object{$_.name -like "*BIOS Power-On Time*" }).value
            $powerOnEnabled = $false
             
            foreach ($setting in $biosSettings){
                foreach ($day in 0..6) {
                    if ($setting.name -like "*$([dayofWeek]$day)*"){
                        if (-not ($Setting.value -like "*,Enable")){$enabledDays.Add([dayofWeek]$day) | Out-Null}
                    }
                }
            }

            if ($enabledDays.Count -gt 0){
                $powerOnEnabled = $true
            }


        }

        if ($systemInfo -eq "dell inc."){
            $enabledDays = New-Object System.Collections.ArrayList
            $biosSettings = gwmi -namespace "root\dcim\sysman" -class DCIM_BIOSEnumeration
            $powerOnHour = ($biosSettings | Where-Object{$_.AttributeName -like "*Auto On Hour*" }).CurrentValue
            $powerOnMin = ($biosSettings | Where-Object{$_.AttributeName -like "*Auto On Minute*" }).CurrentValue
            $powerOnEnabled = $false

            if ($powerOnMin -and $powerOnHour) {
                $powerOnHour = "{0:D2}" -f [int]($powerOnHour[0])
                $powerOnMin = "{0:D2}" -f [int]($powerOnMin[0])
                $powerOnTime = "$($powerOnHour):$($powerOnMin)"
            }

            $powerOnEnabled = ($biosSettings | Where-Object{$_.AttributeName -like "Auto On" }).CurrentValue

            if ($powerOnEnabled[0] -eq 4){$powerOnEnabled = $true}

            foreach ($setting in $biosSettings){
                foreach ($day in 0..6) {
                    if ($setting.AttributeName -like "Auto on $([dayofWeek]$day)" ){
                        if (($setting.CurrentValue)[0] -eq 1){
                            $enabledDays.Add([dayofWeek]$day) | Out-Null
                        }  
                    }
                }
            }
        }

        $object | Add-Member -MemberType NoteProperty –Name Enabled -Value $powerOnEnabled 
        $object | Add-Member -MemberType NoteProperty –Name Time -Value ([DateTime]$powerOnTime)
        $object | Add-Member -MemberType NoteProperty –Name Days -Value ($enabledDays.ToArray())
    }

    catch{
    Write-Warning $_.Exception.Message
    exit 1
    }
    
    return $object
    
}
function Set-AutoOn(){
    param([string[]]$days,
          [Datetime]$time)

    try {
        $systemInfo = (gwmi -class win32_ComputerSystem -Namespace "root\cimv2" -ErrorAction stop).Manufacturer.Trim().ToLower()

        if ($systemInfo -eq "hewlett-packard"){
            $results = (gwmi -class hp_biossettinginterface -Namespace "root\hp\instrumentedbios" -ErrorAction stop).SetBIOSSetting("BIOS Power-On Time (hh:mm)",$time.TimeOfDay,"")
            if($results.Return -ne 0){throw "BIOS returned invalid command"}

            foreach($dayofWeek in  0..6 ){
                $d = ([dayofWeek]$dayofWeek).ToString()

                if ($days.Contains($d)){
                    $results = (gwmi -class hp_biossettinginterface -Namespace "root\hp\instrumentedbios" -ErrorAction stop).SetBIOSSetting($d,"Enable","")
                    if($results.Return -ne 0){throw "BIOS returned invalid command"}
                }
                else{
                    $results = (gwmi -class hp_biossettinginterface -Namespace "root\hp\instrumentedbios" -ErrorAction stop).SetBIOSSetting($d,"Disable","")
                    if($results.Return -ne 0){throw "BIOS returned invalid command"}
                }
            
            }


        }
        if ($systemInfo -eq "dell inc."){

            $dellBIOSSetting = gwmi DCIM_BIOSService -namespace root\dcim\sysman -ErrorAction stop
            
            if ($days.Count -eq 0){$dellEnable = 1}
            else {$dellEnable = 4}
            
            $results = $dellBIOSSetting.SetBIOSAttributes($null,$null,"Auto On",$dellEnable)
                if($results.ReturnValue -ne 0){throw "BIOS returned invalid command"}
                
            $results = $dellBIOSSetting.SetBIOSAttributes($null,$null,"Auto On Hour",("{0:D2}" -f $time.Hour))
                if($results.ReturnValue -ne 0){throw "BIOS returned invalid command"}
                
            $results = $dellBIOSSetting.SetBIOSAttributes($null,$null,"Auto On Minute",("{0:D2}" -f $time.Minute))
                if($results.ReturnValue -ne 0){throw "BIOS returned invalid command"}

            foreach($dayofWeek in  0..6 ){
                $d = ([dayofWeek]$dayofWeek).ToString()

                if ($days.Contains($d)){
                    $results = $dellBIOSSetting.SetBIOSAttributes($null,$null,"Auto on $d",1)
                    if($results.ReturnValue -ne 0){throw "BIOS returned invalid command"}
                }
                else{
                    $results = $dellBIOSSetting.SetBIOSAttributes($null,$null,"Auto on $d",2)
                    if($results.ReturnValue -ne 0){throw "BIOS returned invalid command"}
                }
            
            }
        }       
    }
    catch{
        Write-Warning $_.Exception.Message
        return $false
    }

    return $true
}

if ($Clear){
    [datetime]$Time = "00:00"
    $Days = @()
}
else {

    try {[datetime]$Time = $Time}
    catch{    
        "Your time is invalid, please use the following format hh:mm"
        exit 1
    }

    if (-not $Days){
        "Your day value is missing, try (""mon,tues,wed,thur,fri,sat,sun""):" 
        exit 1
    }
    
    if ($Window){    
        $Time = $Time.AddMinutes((Get-Random -Min 0 -Max $Window))
    }

    $cleanedDays = New-Object System.Collections.ArrayList
    foreach ($Day in $Days) {
        try {
            [dayofWeek]$Day > $null
            $cleanedDays.Add([dayofWeek]$Day) | Out-Null
        }
        catch {
            "$Day is not a valid week of the day, try (""mon,tues,wed,thur,fri,sat,sun""):" 
            exit 1
        }
    }
    $Days = $cleanedDays.ToArray()
}

$currentSettings = Get-AutoOn

if ($currentSettings.Time -eq $time -and (diff $Days $currentSettings.Days -PassThru).count -eq 0){
    "No changes were needed"
    exit 0
}

$results  = Set-AutoOn -Days $Days -time $Time

if ($results){
    "BIOS has been configured"
    exit 0
}
else {
    Write-warning "BIOS configuration has failed"
    exit 1
}