[CmdletBinding()]
param(
    [Parameter(Mandatory = $true)]
    [string]$ReleaseRoot,
    [Parameter(Mandatory = $true)]
    [ValidatePattern("^[A-Za-z0-9._-]{1,96}$")]
    [string]$RunId
)

$ErrorActionPreference = "Stop"
$taskName = "MissionCore-M49TgsFullShadow"
$release = (Resolve-Path -LiteralPath $ReleaseRoot).Path
$runner = Join-Path $release "payload\Invoke-M49TgsFullShadow.ps1"
if (-not (Test-Path -LiteralPath $runner -PathType Leaf)) { throw "M49 TGS full-shadow runner is missing" }
$existing = Get-ScheduledTask -TaskName $taskName -ErrorAction SilentlyContinue
if ($existing -and $existing.State -eq "Running") { throw "$taskName is already running" }
$powerShell = "$env:SystemRoot\System32\WindowsPowerShell\v1.0\powershell.exe"
$arguments = @(
    "-NoLogo", "-NoProfile", "-NonInteractive", "-ExecutionPolicy", "Bypass",
    "-File", "`"$runner`"", "-ReleaseRoot", "`"$release`"", "-RunId", "`"$RunId`""
) -join " "
$userId = [System.Security.Principal.WindowsIdentity]::GetCurrent().Name
$action = New-ScheduledTaskAction -Execute $powerShell -Argument $arguments -WorkingDirectory $release
$principal = New-ScheduledTaskPrincipal -UserId $userId -LogonType Interactive -RunLevel Limited
$trigger = New-ScheduledTaskTrigger -Once -At ((Get-Date).AddMinutes(30))
$settings = New-ScheduledTaskSettingsSet `
    -AllowStartIfOnBatteries `
    -DontStopIfGoingOnBatteries `
    -StartWhenAvailable `
    -ExecutionTimeLimit ([TimeSpan]::FromHours(2))
Register-ScheduledTask `
    -TaskName $taskName `
    -Action $action `
    -Principal $principal `
    -Trigger $trigger `
    -Settings $settings `
    -Description "One-shot CPU-only source-paced TGS full shadow." `
    -Force | Out-Null
Start-ScheduledTask -TaskName $taskName
[pscustomobject]@{
    task_name = $taskName
    run_id = $RunId
    release_root = $release
    state = (Get-ScheduledTask -TaskName $taskName).State.ToString()
} | ConvertTo-Json -Compress