param([switch]$SkipSubmoduleUpdate, [switch]$NoGitProxy)
$ErrorActionPreference = 'Stop'
$root = $PSScriptRoot
$sub = Join-Path $root 'mavlink'
$python = Join-Path $root 'venv/Scripts/python.exe'
function Run-Checked([string]$exe, [string[]]$arguments) {
  & $exe @arguments
  if ($LASTEXITCODE -ne 0) { throw "Command failed ($LASTEXITCODE): $exe $($arguments -join ' ')" }
}
if (-not (Test-Path $python)) { throw "Python virtual environment not found: $python" }
if (-not $SkipSubmoduleUpdate) {
  $gitOptions = @()
  if ($NoGitProxy) { $gitOptions = @('-c','http.proxy=','-c','https.proxy=') }
  if (-not (Test-Path (Join-Path $sub '.git'))) {
    Run-Checked 'git' ($gitOptions + @('-C',$root,'submodule','update','--init','--','mavlink'))
  }
  $dirty = & git -C $sub status --porcelain --untracked-files=normal
  if ($LASTEXITCODE -ne 0) { throw 'Cannot inspect MAVLink submodule' }
  if ($dirty) { throw 'MAVLink submodule has local changes; refusing to overwrite them.' }
  Run-Checked 'git' ($gitOptions + @('-C',$sub,'fetch','origin','main'))
  & git -C $sub merge-base --is-ancestor HEAD origin/main
  if ($LASTEXITCODE -ne 0) { throw 'MAVLink submodule has local or divergent commits; refusing to move it.' }
  Run-Checked 'git' @('-C',$sub,'switch','--detach','origin/main')
  Write-Host 'MAVLink submodule updated; parent repository may now show a modified submodule pointer.'
}
Run-Checked $python @('-m','pip','install','-r',(Join-Path $PSScriptRoot 'requirements.txt'))
Run-Checked $python @((Join-Path $PSScriptRoot 'generate_dialect.py'))
Run-Checked $python @('-m','unittest','discover','-s',(Join-Path $PSScriptRoot 'tests'),'-v')
Run-Checked $python @('-m','PyInstaller','--noconfirm','--clean','--windowed','--onedir','--name','VKGroundStation','--distpath',(Join-Path $PSScriptRoot 'dist'),'--workpath',(Join-Path $PSScriptRoot 'build'),'--specpath',(Join-Path $PSScriptRoot 'build'),(Join-Path $PSScriptRoot 'app.py'))
Write-Host "EXE: $PSScriptRoot\dist\VKGroundStation\VKGroundStation.exe"