papers/.github/workflows/compile-papers.yml

name: Compile LaTeX Papers to PDF

on:
  push:
    branches:
      - main
      - master
    paths:
      - '**.tex'
      - '.github/workflows/compile-papers.yml'
  pull_request:
    branches:
      - main
      - master
    paths:
      - '**.tex'
  workflow_dispatch:

# Grant write permissions for creating releases and committing PDFs
permissions:
  contents: write

jobs:
  compile-pdfs:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Install LaTeX
        run: |
          sudo apt-get update
          sudo apt-get install -y texlive-full

      - name: Compile all LaTeX papers
        run: |
          mkdir -p pdfs
          
          # Find all main .tex files (not in subdirectories)
          for texfile in *.tex; do
            if [ -f "$texfile" ]; then
              echo "Compiling $texfile..."
              
              # Get base name without extension
              basename="${texfile%.tex}"
              
              # Compile LaTeX (run 3 times for references)
              pdflatex -interaction=nonstopmode "$texfile" || true
              bibtex "$basename" 2>/dev/null || true
              pdflatex -interaction=nonstopmode "$texfile" || true
              pdflatex -interaction=nonstopmode "$texfile" || true
              
              # Move PDF to pdfs directory if compilation succeeded
              if [ -f "${basename}.pdf" ]; then
                mv "${basename}.pdf" pdfs/
                echo "✓ Successfully compiled ${basename}.pdf"
              else
                echo "✗ Failed to compile ${basename}.pdf"
              fi
              
              # Clean up auxiliary files
              rm -f *.aux *.log *.bbl *.blg *.out *.toc *.lof *.lot
            fi
          done
          
          # List all generated PDFs
          echo ""
          echo "Generated PDFs:"
          ls -lh pdfs/ || echo "No PDFs generated"
      
      - name: Upload PDFs as artifacts
        uses: actions/upload-artifact@v4
        with:
          name: compiled-papers
          path: pdfs/*.pdf
          retention-days: 90

      - name: Commit PDFs back to repository
        if: github.event_name == 'push' && github.ref == 'refs/heads/main'
        run: |
          git config --local user.email "github-actions[bot]@users.noreply.github.com"
          git config --local user.name "github-actions[bot]"
          
          git add pdfs/*.pdf 2>/dev/null || true
          
          if git diff --staged --quiet; then
            echo "No changes to commit"
          else
            git commit -m "Auto-generated PDFs from LaTeX sources [skip ci]"
            git push
          fi