# Build runner.py into standalone api_runner.exe (Nuitka)
# Usage in PowerShell:
#   .\build_runner.ps1

$ErrorActionPreference = "Stop"
Set-Location $PSScriptRoot

Write-Host "[1/4] Check Python 3.11 ..." -ForegroundColor Cyan

$python = $null
if (Get-Command py -ErrorAction SilentlyContinue) {
    $python = "py -3.11"
} elseif (Get-Command python -ErrorAction SilentlyContinue) {
    $python = "python"
} else {
    Write-Host "ERROR: Python not found. Please install Python 3.11." -ForegroundColor Red
    exit 1
}

Invoke-Expression "$python --version"

Write-Host "[2/4] Install build dependencies ..." -ForegroundColor Cyan
Invoke-Expression "$python -m pip install -r requirements.txt"

Write-Host "[3/4] Check required files ..." -ForegroundColor Cyan
foreach ($file in @("runner.py", "license.lic", "public_key.pem")) {
    if (-not (Test-Path $file)) {
        Write-Host "ERROR: $file not found." -ForegroundColor Red
        exit 1
    }
}

if (-not (Test-Path "entry.cp311-win_amd64.pyd")) {
    Write-Host "ERROR: entry.cp311-win_amd64.pyd not found." -ForegroundColor Red
    exit 1
}
foreach ($src in @("entry.py", "data_clean.py", "frequency_filter.py")) {
    if (Test-Path $src) {
        Write-Host "ERROR: Found $src - remove algorithm source files before building." -ForegroundColor Red
        exit 1
    }
}

Write-Host "[4/4] Build api_runner.exe ..." -ForegroundColor Cyan
Remove-Item -Recurse -Force runner.dist, runner.build -ErrorAction SilentlyContinue
$env:NUITKA_CACHE_DIR = Join-Path $env:TEMP "nuitka-cache"
Invoke-Expression @"
$python -m nuitka runner.py `
  --standalone `
  --jobs=1 `
  --lto=no `
  --assume-yes-for-downloads `
  --output-filename=api_runner.exe `
  --include-package=cryptography `
  --include-package=numpy `
  --include-package=pandas `
  --include-package=scipy `
  --include-package=matplotlib `
  --enable-plugin=matplotlib `
  --include-module=numpy.testing `
  --nofollow-import-to=tkinter `
  --nofollow-import-to=matplotlib.tests `
  --nofollow-import-to=pandas.tests `
  --nofollow-import-to=scipy.tests `
  --include-data-files=entry.cp311-win_amd64.pyd=entry.cp311-win_amd64.pyd `
  --include-data-files=license.lic=license.lic `
  --include-data-files=public_key.pem=public_key.pem
"@

if ($LASTEXITCODE -ne 0) {
    Write-Host "ERROR: Build failed." -ForegroundColor Red
    exit 1
}

Write-Host ""
Write-Host "SUCCESS: $PSScriptRoot\runner.dist\api_runner.exe" -ForegroundColor Green
Write-Host "Next: cd to project root and run: npm run electron:dev" -ForegroundColor Green