name: Build LaTeX packages
on: [push]

jobs:
  build:
    runs-on: latex-latest
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          submodules: recursive
          fetch-depth: 0    # We need all history to correctly parse tag names
          fetch-tags: true
      - name: Setup git credentials and committer
        run: .ci/configure_git.sh
        env:
          DEPLOY_SSH_KEY: ${{ secrets.deploy_ssh_key }}
      - name: Clone build repository
        uses: actions/checkout@v4
        with:
          repository: latex/latex-packages-build
          path: build/packages
          ref: master
      - name: Checkout correct branch in build repository
        run: |
          .ci/setup_build_repo_branch.sh
        env:
          REF_NAME: ${{ github.ref_name }}
      - name: Build packages incrementally
        run: make
      - name: Push packages to build repo
        run: |
          .ci/deploy_to_build_repo.sh
        env:
          REF_NAME: ${{ github.ref_name }}
      - name: Clean up git files from build repo
        if: github.ref == 'refs/heads/master'
        run: rm -rf build/packages/.git
      - name: Save built packages to cache
        if: github.ref == 'refs/heads/master'
        uses: actions/cache/save@v3
        with:
          path: build/packages/
          key: ${{ github.ref }}-packages

  pages:
    runs-on: latex-latest
    needs: build
    if: github.ref == 'refs/heads/master'
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
      - name: Load package cache
        uses: actions/cache/restore@v3
        with:
          path: build/packages/
          key: ${{ github.ref }}-packages
      - name: Load compilation cache
        uses: actions/cache/restore@v3
        with:
          path: .compile
          key: ${{ github.ref }}-doc
      - name: Compile documentation
        run: make doc
        env:
          TEXINPUTS: '${{ github.workspace }}/build/packages//:'
      - name: Prepage pages
        run: |
          cd build
          rm -rf packages/.git  # Don't deploy the git files
          zip -r latex-packages.zip packages/ -x '*.git*'
          zip -r latex-packages-doc.zip doc/
      - name: Deploy to pages
        uses: actions/pages@v1
        with:
          directory: build/
      - name: Upload compilation cache
        uses: actions/cache/save@v3
        with:
          path: .compile
          key: ${{ github.ref }}-doc