# Build PRINCIPAL.pdf (elsarticle, xelatex + biblatex/biber).
# Reusable recipe after the tectonic build was found broken in this env.
# Usage:  powershell -NoProfile -ExecutionPolicy Bypass -File tools\build_pdf.ps1
$ErrorActionPreference = 'Continue'
$root = 'c:\Users\fdavalos\OneDrive - up.edu.mx\microtracking\MicrotrackingFer'
$art  = Join-Path $root 'articulo'

# Locate a TeX engine (prefer MiKTeX on PATH, else the known install).
function Resolve-Engine($name) {
  $c = Get-Command $name -ErrorAction SilentlyContinue
  if ($c) { return $c.Source }
  $p = "C:\Users\fdavalos\AppData\Local\Programs\MiKTeX\miktex\bin\x64\$name.exe"
  if (Test-Path $p) { return $p }
  return $null
}
$xelatex = Resolve-Engine 'xelatex'
$biber   = Resolve-Engine 'biber'
if (-not $xelatex) { Write-Error 'xelatex not found. Install MiKTeX or add it to PATH.' }
Write-Host "xelatex: $xelatex"
Write-Host "biber  : $biber"

Set-Location $art

# Drop stale auxiliary files (OneDrive can leave locked/stale aux).
Get-ChildItem -File |
  Where-Object { $_.Name -match '\.(aux|bbl|bblg|bcf|fls|out|toc|nav|snm|run\.xml|xrefs\.tex|makejob)$' } |
  Remove-Item -Force -ErrorAction SilentlyContinue

Write-Host '=== PASS 1 (xelatex) ==='
& $xelatex -interaction=nonstopmode -halt-on-error PRINCIPAL
Write-Host "PASS1 exit=$LASTEXITCODE  bcf=$(Test-Path PRINCIPAL.bcf)"

if ((Test-Path PRINCIPAL.bcf) -and $biber) {
  Write-Host '=== BIBER ==='
  & $biber PRINCIPAL
  Write-Host "BIBER exit=$LASTEXITCODE  bbl=$(Test-Path PRINCIPAL.bbl)"

  Write-Host '=== PASS 2 (xelatex) ==='
  & $xelatex -interaction=nonstopmode PRINCIPAL
  Write-Host "PASS2 exit=$LASTEXITCODE"

  Write-Host '=== PASS 3 (xelatex) ==='
  & $xelatex -interaction=nonstopmode PRINCIPAL
  Write-Host "PASS3 exit=$LASTEXITCODE"
}

if (Test-Path PRINCIPAL.pdf) {
  Write-Host ('PDF mtime: ' + (Get-Item PRINCIPAL.pdf).LastWriteTime)
} else {
  Write-Host 'PDF NOT PRODUCED'
}
Write-Host '=== BUILD DONE ==='