# install-hydrahotspot.ps1
# Installs "HydraHotspot": auto-start + self-heal for the Windows Mobile Hotspot on a
# venue-kiosk machine. Reproduces what was hand-installed on fluffy-dumpling-87
# (hostname hydra-s-0000) at the gallo-romeins-museum venue, 2026-07-17..23.
# Goal: turn this into a hydracluster role recipe (recipes/hydra-hotspot-windows.yaml).

$ErrorActionPreference = 'Stop'

# --- 1. Runtime script: idempotently turn the Mobile Hotspot ON (retry loop for uplink settle) ---
$runtime = @'
$null = [System.Reflection.Assembly]::LoadWithPartialName('System.Runtime.WindowsRuntime')
function Await($t,$rt){ $m=([System.WindowsRuntimeSystemExtensions].GetMethods()|Where-Object{$_.Name -eq 'AsTask' -and $_.GetParameters().Count -eq 1 -and $_.GetParameters()[0].ParameterType.Name -eq 'IAsyncOperation`1'})[0]; $g=$m.MakeGenericMethod($rt); $nt=$g.Invoke($null,@($t)); $nt.Wait(-1)|Out-Null; $nt.Result }
for($i=0;$i -lt 30;$i++){
  try{
    $p=[Windows.Networking.Connectivity.NetworkInformation,Windows.Networking.Connectivity,ContentType=WindowsRuntime]::GetInternetConnectionProfile()
    if($p){
      $m=[Windows.Networking.NetworkOperators.NetworkOperatorTetheringManager,Windows.Networking.NetworkOperators,ContentType=WindowsRuntime]::CreateFromConnectionProfile($p)
      if($m.TetheringOperationalState -ne 'On'){ Await ($m.StartTetheringAsync()) ([Windows.Networking.NetworkOperators.NetworkOperatorTetheringOperationResult]) | Out-Null }
      if($m.TetheringOperationalState -eq 'On'){ "$(Get-Date -Format o) hotspot ON" | Out-File -Append 'C:\hydra\hotspot.log'; break }
    }
  }catch{ "$(Get-Date -Format o) err $($_.Exception.Message)" | Out-File -Append 'C:\hydra\hotspot.log' }
  Start-Sleep -Seconds 5
}
'@
New-Item -ItemType Directory -Force -Path 'C:\hydra' | Out-Null
Set-Content -Path 'C:\hydra\start-hotspot.ps1' -Value $runtime -Encoding UTF8

# --- 2. Scheduled task: start at logon (+15s) AND self-heal every 5 min ---
$act    = New-ScheduledTaskAction -Execute 'powershell.exe' -Argument '-NoProfile -ExecutionPolicy Bypass -WindowStyle Hidden -File C:\hydra\start-hotspot.ps1'
$tLogon = New-ScheduledTaskTrigger -AtLogOn -User 'hydra'; $tLogon.Delay = 'PT15S'
$tRepeat = New-ScheduledTaskTrigger -Once -At (Get-Date).Date -RepetitionInterval (New-TimeSpan -Minutes 5) -RepetitionDuration (New-TimeSpan -Days 3650)
$prin   = New-ScheduledTaskPrincipal -UserId 'hydra' -LogonType Interactive -RunLevel Highest
$set    = New-ScheduledTaskSettingsSet -StartWhenAvailable -MultipleInstances IgnoreNew -ExecutionTimeLimit (New-TimeSpan -Minutes 4)
Register-ScheduledTask -TaskName 'HydraHotspot' -Description 'Auto-start + self-heal Windows Mobile Hotspot for venue kiosk devices' -Action $act -Trigger $tLogon,$tRepeat -Principal $prin -Settings $set -Force

# --- Dependencies / notes (parametrise for a recipe) ---
#  * Mobile Hotspot SSID/password/shared-uplink must already be configured in Windows Settings (it persists; only the ON state does not).
#    On fluffy: SSID "experiencenet", shares the Ethernet uplink.
#  * Requires AutoAdminLogon for an admin user (here: 'hydra') so the logon trigger fires unattended after boot.
#    The tethering WinRT API needs an interactive, elevated session — SYSTEM-at-boot does not work reliably.
#  * Windows auto-disables Mobile Hotspot ~5 min after the LAST client disconnects; the 5-min repeat re-asserts it.
#  * 'hydra' is the venue-specific kiosk user — parametrise (user, SSID) when turning this into a recipe.