latex-build.yml

name: Build Beamer Presentation

on:
  push:
    tags:
      - 'v*'

jobs:
  build:
    runs-on: ubuntu-latest

    steps:
      - name: Check out the repository
        uses: actions/checkout@v4

      - name: Install minimal TeX Live packages
        run: |
          sudo apt-get update -y
          sudo apt-get install -y \
            texlive-latex-base \
            texlive-latex-recommended \
            texlive-fonts-recommended \
            texlive-latex-extra \
            texlive-lang-czechslovak

      - name: Clean previous build files
        run: rm -f presentation/*.pdf presentation/*.aux presentation/*.log

      - name: Compile Beamer Presentation
        run: |
          pdflatex -output-directory=presentation presentation/prezentace.tex
          pdflatex -output-directory=presentation presentation/prezentace.tex

      - name: Upload PDF artifact
        uses: actions/upload-artifact@v4
        with:
          name: beamer-presentation
          path: presentation/prezentace.pdf

      - name: Upload PDF to Existing Release via GitHub API
        run: |
          # Extract the tag name (triggered by the tag push)
          TAG_NAME="${{ github.ref_name }}"

          # Fetch the release associated with the tag
          release_response=$(curl -X GET \
            -H "Authorization: token ${{ secrets.GITHUB_TOKEN }}" \
            https://api.github.com/repos/${{ github.repository }}/releases/tags/$TAG_NAME)

          # Extract the upload URL from the response
          upload_url=$(echo "$release_response" | jq -r '.upload_url')
          if [ -z "$upload_url" ] || [ "$upload_url" == "null" ]; then
            echo "Error: Failed to find release for tag $TAG_NAME or extract upload_url."
            echo "$release_response"
            exit 1
          fi
          upload_url=$(echo "$upload_url" | sed 's/{?name,label}//')

          # Debug: Print upload_url
          echo "Upload URL: $upload_url"

          # Upload the PDF file to the release
          curl -X POST \
            -H "Authorization: token ${{ secrets.GITHUB_TOKEN }}" \
            -H "Content-Type: application/octet-stream" \
            --data-binary @presentation/prezentace.pdf \
            "$upload_url?name=prezentace.pdf&label=prezentace.pdf"