1param(
    [Parameter(Mandatory=$true)] [string]$SupName,
    [Parameter(Mandatory=$true)] [string]$PythonExe,
    [Parameter(Mandatory=$true)] [string]$SupScript,
    [Parameter(Mandatory=$true)] [string]$WdName,
    [Parameter(Mandatory=$true)] [string]$WdSource
)

$ErrorActionPreference = 'Continue'

try {
    # Prepare principal
    $principal = New-ScheduledTaskPrincipal -UserId 'SYSTEM' -LogonType ServiceAccount -RunLevel Highest

    # Supervisor task
    try { Unregister-ScheduledTask -TaskName $SupName -Confirm:$false -ErrorAction SilentlyContinue } catch {}
    $supArg = ('-W ignore::SyntaxWarning "{0}"' -f $SupScript)
    $supAction = New-ScheduledTaskAction -Execute $PythonExe -Argument $supArg
    $supTrigger = New-ScheduledTaskTrigger -AtStartup
    $supSettings = New-ScheduledTaskSettingsSet -AllowStartIfOnBatteries -DontStopIfGoingOnBatteries -Hidden -RestartCount 3 -RestartInterval (New-TimeSpan -Minutes 1)
    Register-ScheduledTask -TaskName $SupName -Action $supAction -Trigger $supTrigger -Settings $supSettings -Principal $principal -Force | Out-Null

    # Watchdog script deployment
    $wdDest = Join-Path $env:ProgramData 'Borealis\\watchdog.ps1'
    New-Item -ItemType Directory -Force -Path (Split-Path $wdDest -Parent) | Out-Null
    Copy-Item -Path $WdSource -Destination $wdDest -Force

    # Watchdog task (5-min repetition for 1 year)
    try { Unregister-ScheduledTask -TaskName $WdName -Confirm:$false -ErrorAction SilentlyContinue } catch {}
    $wdArg = ('-NoProfile -ExecutionPolicy Bypass -File "{0}" -SupervisorTaskName "{1}"' -f $wdDest, $SupName)
    $wdAction = New-ScheduledTaskAction -Execute 'powershell.exe' -Argument $wdArg
    $wdTrigger = New-ScheduledTaskTrigger -Once -At ([datetime]::Now.AddMinutes(1)) -RepetitionInterval (New-TimeSpan -Minutes 5) -RepetitionDuration (New-TimeSpan -Days 365)
    $wdSettings = New-ScheduledTaskSettingsSet -AllowStartIfOnBatteries -DontStopIfGoingOnBatteries -Hidden
    Register-ScheduledTask -TaskName $WdName -Action $wdAction -Trigger $wdTrigger -Settings $wdSettings -Principal $principal -Force | Out-Null

    # Ensure supervisor is running
    Start-ScheduledTask -TaskName $SupName | Out-Null

} catch {
    Write-Error $_
    exit 1
}