Set-ScheduledTask.ps1

[CmdletBinding()]
param(
    [Parameter(Mandatory=$false)][String] $ComputerName = $env:COMPUTERNAME,
    [Parameter(Mandatory=$false)][ValidateSet('Start','Stop','Enable','Delete','Create')][String] $Action
)

try
{
    $TaskName = 'Maintenace'
    $TaskPath = '\'
    $User = 'NT AUTHORITY\SYSTEM'
    $CimSessionOption = New-CimSessionOption -Protocol 'Dcom'
    $CimSession = New-CimSession -ComputerName $ComputerName -SessionOption $CimSessionOption -Credential $Credential -ErrorAction SilentlyContinue
    if ($null -ne $CimSession)
    {
        $Task = Get-ScheduledTask -CimSession $CimSession | Where-Object { $_.TaskName -eq $TaskName}
        if (-not $Task -and $Action -ne 'Create') { Throw ('{0} does not exist on {1}!' -f $TaskName, $ComputerName) }
        switch ($Action)
        {
            'Start'
            {
                Start-ScheduledTask -CimSession $CimSession -TaskPath $TaskPath -TaskName $TaskName -ErrorAction Stop
                break
            }

            'Stop'
            {
                Stop-ScheduledTask -CimSession $CimSession -TaskPath $TaskPath -TaskName $TaskName -ErrorAction Stop
                break
            }

            'Enable'
            {
                Enable-ScheduledTask -CimSession $CimSession -TaskPath $TaskPath -TaskName $TaskName -ErrorAction Stop
                break
            }

            'Delete'
            {
                Unregister-ScheduledTask -CimSession $CimSession -TaskPath $TaskPath -TaskName $TaskName -ErrorAction Stop
                break
            }

            'Create'
            {
                $AdvSettings = New-ScheduledTaskTrigger -At '1:00am' -Once -RepetitionDuration '14:00' -RepetitionInterval '01:00'
                $AdvSettings.Repetition.StopAtDurationEnd = $false
                $TaskTrigger1 = New-ScheduledTaskTrigger -At '1:00am' -Weekly -WeeksInterval 1 -DaysOfWeek Saturday,Sunday
                $TaskTrigger1.Repetition = $AdvSettings.Repetition
                $TaskTrigger2 = New-ScheduledTaskTrigger -AtStartup
                $TaskTrigger2.Delay = 'PT1M'
                $TaskTrigger = @($TaskTrigger1, $TaskTrigger2)
                
                $TaskTrigger | Where-Object { $_.StartBoundary } | ForEach-Object { $_.StartBoundary = [DateTime]::Parse($_.StartBoundary).ToLocalTime().ToString('s') }
                
                $Command = 'C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe'
                $Script = 'Perform-Maintenace.ps1 -Verbose *> C:\Temp\Perform-Maintenace.log'
                $Argument = ('-NoProfile -Command "& {{ {0} }}"' -f $Script)
                $TaskAction = New-ScheduledTaskAction -Execute $Command -Argument $Argument
                $TaskSetting = New-ScheduledTaskSettingsSet -Compatibility Win8

                $Description = 'Maintenace scheduled task'
                Register-ScheduledTask -CimSession $CimSession -TaskPath $TaskPath -TaskName $TaskName -User $User -Action $TaskAction -Settings $TaskSetting -RunLevel Highest -Description $Description -Trigger $TaskTrigger -Force -ErrorAction Stop
                break
            }
        }
    }
}
catch
{
    Write-Verbose -Message $_.Exception.Message
}