name: docgen

on:
  push:
    branches:
      - master

jobs:
  docgen:
    runs-on: [ubuntu-latest]
    permissions:
      contents: write
    steps:
    - uses: actions/checkout@v2
    - run: date +%F > todays-date
    - name: Restore cache for today's nightly.
      uses: actions/cache@v2
      with:
        path: _neovim
        key: ${{ runner.os }}-nightly-${{ hashFiles('todays-date') }}
    - name: Setup from neovim nightly and run docgen
      run: |
        curl -OL https://raw.githubusercontent.com/norcalli/bot-ci/master/scripts/github-actions-setup.sh
        source github-actions-setup.sh nightly-x64
        scripts/docgen.sh
    - name: Commit changes
      env:
        COMMIT_MSG: |
          [docgen] Update CONFIG.md
          skip-checks: true
      run: |
        git config user.name github-actions
        git config user.email github-actions@github.com
        git add CONFIG.md
        # Only commit and push if we have changes
        git diff --quiet && git diff --staged --quiet || (git commit -m "${COMMIT_MSG}"; git push)
  vimdocgen:
    needs: docgen
    runs-on: [ubuntu-latest]
    permissions:
      contents: write
    steps:
      - uses: actions/checkout@v2
      - run: date +%F > todays-date
      - name: Restore cache for today's nightly.
        uses: actions/cache@v2
        with:
          path: build
          key: ${{ runner.os }}-appimage-${{ hashFiles('todays-date') }}

      - name: Setup neovim nightly and install plugins
        run: |
          test -d build || {
            mkdir -p build
            wget https://github.com/neovim/neovim/releases/download/nightly/nvim.appimage
            chmod +x nvim.appimage
            mv nvim.appimage ./build/nvim
          }
          mkdir -p ~/.local/share/nvim/site/pack/vendor/start
          git clone --depth 1 https://github.com/mjlbach/babelfish.nvim ~/.local/share/nvim/site/pack/vendor/start/babelfish.nvim
          git clone --depth 1 https://github.com/nvim-treesitter/nvim-treesitter ~/.local/share/nvim/site/pack/vendor/start/nvim-treesitter
          ln -s $(pwd) ~/.local/share/nvim/site/pack/vendor/start

      - name: Build parser
        run: |
          export PACKPATH=$HOME/.local/share/nvim/site
          ./build/nvim -u ~/.local/share/nvim/site/pack/vendor/start/babelfish.nvim/scripts/init.lua --headless -c 'TSInstallSync markdown' -c 'qa'
      - name: Generating docs
        run: |
          export PATH="${PWD}/build/:${PATH}"
          export PACKPATH=$HOME/.local/share/nvim/site
          ./build/nvim -u ~/.local/share/nvim/site/pack/vendor/start/babelfish.nvim/scripts/init.lua --headless -c 'luafile ./scripts/vimdocgen.lua' -c 'qa'
      - name: Commit changes
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          COMMIT_MSG: |
            [docgen] Update README.md
            skip-checks: true
        run: |
          git config user.email "actions@github"
          git config user.name "Github Actions"
          git remote set-url origin https://x-access-token:${GITHUB_TOKEN}@github.com/${GITHUB_REPOSITORY}.git
          git add doc/lspconfig.txt
          # Only commit and push if we have changes
          git diff --quiet && git diff --staged --quiet || (git commit -m "${COMMIT_MSG}"; git push origin HEAD:${GITHUB_REF})