generate-pdf.yml

name: Generate PDF for Textbook

on:
  push:
    branches:
      - main
  pull_request:
    branches:
      - main

jobs:
  build_and_generate_pdf:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout code
        uses: actions/checkout@v3

      - name: Install Pandoc, Latex necessities, and pdftk
        run: |
          sudo apt-get install -y pandoc texlive texlive-latex-extra poppler-utils texlive-extra-utils pdftk
      - name: Install Python
        uses: actions/setup-python@v4
        with:
          python-version: '3.11'

      - name: Generate PDFs from the textbook Markdown files
        run: |
          mkdir -p pdf_output
          
          file_list=(
            "index.md"
            "search/index.md"
            "search/agents.md"
            "search/state.md"
            "search/uninformed.md"
            "search/informed.md"
            "search/local.md"
            "search/summary.md"
            "csp/index.md"
            "csp/csps.md"
            "csp/solving.md"
            "csp/filtering.md"
            "csp/ordering.md"
            "csp/local-search.md"
            "csp/summary.md"
            "games/index.md"
            "games/games.md"
            "games/minimax.md"
            "games/expectimax.md"
            "games/general.md"
            "games/monte-carlo.md"
            "games/summary.md"
            "mdp/index.md"
            "mdp/markov-decision-processes.md"
            "mdp/solve.md"
            "mdp/value-iteration.md"
            "mdp/policies-iteration.md"
            "mdp/summary.md"
            "rl/index.md"
            "rl/rl.md"
            "rl/mbl.md"
            "rl/mfl.md"
            "rl/eae.md"
            "rl/summary.md"
            "bayes-nets/index.md"
            "bayes-nets/approximate.md"
            "vpis/index.md"
            "vpis/utilities.md"
            "vpis/decision-networks.md"
            "vpis/vpi.md"
            "hmms/index.md"
            "hmms/markov.md"
            "hmms/hmm.md"
            "hmms/viterbi.md"
            "hmms/particle-filtering.md"
            "hmms/summary.md"
            "ml/index.md"
            "ml/machine-learning.md"
            "ml/naive-bayes.md"
            "ml/perceptrons.md"
            "ml/binary.md"
            "ml/linear-regression.md"
            "ml/optimization.md"
            "ml/logistic.md"
            "ml/multi-class-logistic.md"
            "ml/motivation.md"
            "logic/index.md"
            "logic/knowledge.md"
            "logic/language.md"
            "logic/propositional.md"
            "logic/inference.md"
            "logic/theorem.md"
            "logic/forward.md"
            "logic/first-order-logic.md"
            "logic/first-order-logical-inference.md"
            "logic/logical-agents.md"
            "logic/summary.md"
          )
          for md_file in "${file_list[@]}"; do
            pdf_file_name="pdf_output/$(echo "$md_file" | sed 's/\//_/g' | sed 's/.md//g').pdf"
            python3 pdf-generation/generate-pdf-edits.py "$md_file" | pandoc -V geometry:margin=1in -V colorlinks=true -V linkcolor=blue -V urlcolor=blue --pdf-engine=pdflatex -o "$pdf_file_name"
            if [ ! -f "$pdf_file_name" ]; then
              echo "Error: PDF file $pdf_file_name not created!" >&2
              exit 1
            fi
          done

          echo "Completed making PDF files"

          pdftk \
            "pdf_output/index.pdf" \
            "pdf_output/search_index.pdf" \
            "pdf_output/search_agents.pdf" \
            "pdf_output/search_state.pdf" \
            "pdf_output/search_uninformed.pdf" \
            "pdf_output/search_informed.pdf" \
            "pdf_output/search_local.pdf" \
            "pdf_output/search_summary.pdf" \
            "pdf_output/csp_index.pdf" \
            "pdf_output/csp_csps.pdf" \
            "pdf_output/csp_solving.pdf" \
            "pdf_output/csp_filtering.pdf" \
            "pdf_output/csp_ordering.pdf" \
            "pdf_output/csp_local-search.pdf" \
            "pdf_output/csp_summary.pdf" \
            "pdf_output/games_index.pdf" \
            "pdf_output/games_games.pdf" \
            "pdf_output/games_minimax.pdf" \
            "pdf_output/games_expectimax.pdf" \
            "pdf_output/games_general.pdf" \
            "pdf_output/games_monte-carlo.pdf" \
            "pdf_output/games_summary.pdf" \
            "pdf_output/mdp_index.pdf" \
            "pdf_output/mdp_markov-decision-processes.pdf" \
            "pdf_output/mdp_solve.pdf" \
            "pdf_output/mdp_value-iteration.pdf" \
            "pdf_output/mdp_policies-iteration.pdf" \
            "pdf_output/mdp_summary.pdf" \
            "pdf_output/rl_index.pdf" \
            "pdf_output/rl_rl.pdf" \
            "pdf_output/rl_mbl.pdf" \
            "pdf_output/rl_mfl.pdf" \
            "pdf_output/rl_eae.pdf" \
            "pdf_output/rl_summary.pdf" \
            "pdf_output/bayes-nets_index.pdf" \
            "pdf_output/bayes-nets_approximate.pdf" \
            "pdf_output/vpis_index.pdf" \
            "pdf_output/vpis_utilities.pdf" \
            "pdf_output/vpis_decision-networks.pdf" \
            "pdf_output/vpis_vpi.pdf" \
            "pdf_output/hmms_index.pdf" \
            "pdf_output/hmms_markov.pdf" \
            "pdf_output/hmms_hmm.pdf" \
            "pdf_output/hmms_viterbi.pdf" \
            "pdf_output/hmms_particle-filtering.pdf" \
            "pdf_output/hmms_summary.pdf" \
            "pdf_output/ml_index.pdf" \
            "pdf_output/ml_machine-learning.pdf" \
            "pdf_output/ml_naive-bayes.pdf" \
            "pdf_output/ml_perceptrons.pdf" \
            "pdf_output/ml_binary.pdf" \
            "pdf_output/ml_linear-regression.pdf" \
            "pdf_output/ml_optimization.pdf" \
            "pdf_output/ml_logistic.pdf" \
            "pdf_output/ml_multi-class-logistic.pdf" \
            "pdf_output/ml_motivation.pdf" \
            "pdf_output/logic_index.pdf" \
            "pdf_output/logic_knowledge.pdf" \
            "pdf_output/logic_language.pdf" \
            "pdf_output/logic_propositional.pdf" \
            "pdf_output/logic_inference.pdf" \
            "pdf_output/logic_theorem.pdf" \
            "pdf_output/logic_forward.pdf" \
            "pdf_output/logic_first-order-logic.pdf" \
            "pdf_output/logic_first-order-logical-inference.pdf" \
            "pdf_output/logic_logical-agents.pdf" \
            "pdf_output/logic_summary.pdf" \
            cat output "textbook_full_original.pdf"
      
      - name: Inject page numbers back into the pdf
        run: |
          mkdir -p pdf_numbering_output
          num_pages=$(pdftk textbook_full_original.pdf dump_data | grep NumberOfPages | awk '{print $2}')
          sed -i "s/161/$num_pages/" pdf-generation/numbering.tex
          
          # Don't continue if the sed failed
          if [ $? -ne 0 ]; then
            echo "Error: sed command failed" >&2
            exit 1
          fi
          pdflatex pdf-generation/numbering.tex
          pdftk numbering.pdf burst output pdf_numbering_output/number_%03d.pdf
          pdftk textbook_full_original.pdf burst output pdf_numbering_output/page_%03d.pdf
          for i in $(seq -f %03g 1 $num_pages) ; do pdftk pdf_numbering_output/page_$i.pdf background pdf_numbering_output/number_$i.pdf output pdf_numbering_output/new_$i.pdf; done
          pdftk pdf_numbering_output/new_???.pdf output textbook_full.pdf
          cp textbook_full.pdf textbook_full_cpy.pdf
          sed -i "s/$num_pages/161/" pdf-generation/numbering.tex
      - name: Upload PDF as an artifact
        uses: actions/upload-artifact@v4
        with:
          name: textbook-full-copy
          path: textbook_full_cpy.pdf

      - name: Remove temporary files
        run: |
          rm -rf pdf_output
          rm -rf pdf_numbering_output
          rm textbook_full_original.pdf
          rm textbook_full_cpy.pdf
          rm numbering.pdf
          rm numbering.aux
      
      - name: Check if PDF files are created
        run: |
          if [ -f "textbook_full.pdf" ]; then echo "textbook_full.pdf here"; else echo "textbook_full.pdf gone"; fi
      - name: Check git status
        run: git status

      - name: Check git diff
        run: git diff --stat

      - name: Commit changes to a new branch
        if: github.event_name == 'push' && !contains(github.event.head_commit.message, 'Update PDF of textbook')
        run: |
          git config --local user.email "github-actions[bot]@users.noreply.github.com"
          git config --local user.name "GitHub Actions"
          git checkout -b update-textbook-full-pdf
          git add -f textbook_full.pdf
          git commit -m "Update PDF of textbook on site after a merge to main"
          git push -f origin update-textbook-full-pdf
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - name: Check git log on update-textbook-full-pdf branch
        if: github.event_name == 'push' && !contains(github.event.head_commit.message, 'Update PDF of textbook')
        run: |
          git checkout update-textbook-full-pdf
          git log