pdf.yml

name: Docs to PDF

on:
  push:
    branches:
      - main
  pull_request:
    types:
      - closed
    branches:
      - main
  workflow_dispatch: {}

jobs:
  converttopdf:
    name: build-release-pdf
    runs-on: ubuntu-latest
    if: github.event.pull_request.merged == true || github.event_name == 'push' || github.event_name == 'workflow_dispatch'
    steps:
      - id: today
        run: echo "name=$(date +'%Y-%m-%d')" >> $GITHUB_ENV
      
      # Checkout the repository
      - uses: actions/checkout@v3

      # Install pandoc and xelatex
      - name: Install dependencies
        run: sudo apt-get install -y pandoc texlive-xetex

      # Create directory for PDFs
      - name: Create PDF directory
        run: mkdir -p pdfs

      # Fix YAML metadata issues
      - name: Fix YAML metadata
        run: |
          find . -name "*.md" -exec sed -i '/^---$/!b;n;/^$/!b;n;/^---$/d;' {} \;

      # Ensure images are present
      - name: Ensure images are present
        run: mkdir -p imgs && touch imgs/dummy.jpg
      - name: Replace missing images
        run: |
          find . -name "*.md" -exec sed -i 's|imgs/|imgs/dummy.jpg|g' {} \;

      # Concatenate all markdown files into a single file
      - name: Concatenate markdown files
        run: find . -name "*.md" -exec cat {} + > combined.md

      # Convert the concatenated markdown to PDF using xelatex and custom template
      - name: Convert markdown to PDF
        run: pandoc combined.md -o pdfs/combined.pdf --pdf-engine=xelatex --template=template.tex
      
      # Upload the PDF artifact
      - uses: actions/upload-artifact@v3
        with:
          name: release
          path: pdfs

      # Create a release with the PDF
      - name: Create GitHub Release
        uses: ncipollo/release-action@v1
        with:
          token: ${{ secrets.GITHUB_TOKEN }}
          tag: release-${{ env.name }}
          release_name: release-${{ env.name }}
          draft: false
          prerelease: false
          files: pdfs/combined.pdf