name: Build LaTeX Assignment

on:
  push:
    branches:
      - main
  workflow_dispatch:

jobs:
  build:
    name: Compile and publish PDF
    runs-on: latex-docker

    steps:
      - name: Check out source
        uses: builtin:checkout

      - name: Install Node.js in the job container
        run: |
          set -eu
          apt-get update
          apt-get install -y --no-install-recommends nodejs
          node --version
          rm -rf /var/lib/apt/lists/*

      - name: Generate build metadata
        run: |
          set -eu
          printf '\\renewcommand{\\BuildCommit}{%s}\n\\renewcommand{\\BuildRun}{%s}\n' \
            "$(git rev-parse --short HEAD)" \
            "${GITEA_RUN_ID:-${GITHUB_RUN_ID:-manual}}" \
            > build-metadata.tex
          cat build-metadata.tex

      - name: Verify LaTeX tools
        run: |
          set -eu
          command -v latexmk
          command -v pdflatex
          command -v pygmentize
          latexmk -v
          pygmentize -V

      - name: Compile assignment
        run: |
          set -eu
          latexmk -pdf \
            -shell-escape \
            -interaction=nonstopmode \
            -halt-on-error \
            devopsAssignment.tex

          test -s devopsAssignment.pdf
          ls -lh devopsAssignment.pdf

      - name: Upload PDF artifact
        uses: actions/upload-artifact@v4
        with:
          name: devopsAssignment-PDF
          path: devopsAssignment.pdf
          if-no-files-found: error
          retention-days: 14