name: Docgen
on:
  push:
    branches:
      - master
  workflow_dispatch:


jobs:
  build:
    timeout-minutes: 20

    name: 'Generate & upload documentation'
    runs-on: 'ubuntu-20.04'
    continue-on-error: true
    steps:
      - name: Checkout
        uses: actions/checkout@v2
        with:
          submodules: true

      - uses: jiro4989/setup-nim-action@v1
        with:
          nim-version: '1.6.x'

      - name: Generate doc
        run: |
          nim --version
          nimble --version
          nimble install_pinned
          # nim doc can "fail", but the doc is still generated
          nim doc --git.url:https://github.com/vacp2p/nim-libp2p --git.commit:${GITHUB_REF##*/} --outdir:${GITHUB_REF##*/} --project libp2p || true

          # check that the folder exists
          ls ${GITHUB_REF##*/}

      - name: Clone the gh-pages branch
        uses: actions/checkout@v2
        with:
          repository: vacp2p/nim-libp2p
          ref: gh-pages
          path: subdoc
          submodules: true
          fetch-depth: 0

      - name: Commit & push
        run: |
          cd subdoc

          # Update / create this branch doc
          rm -rf ${GITHUB_REF##*/}
          mv ../${GITHUB_REF##*/} .

          # Remove .idx files
          # NOTE: git also uses idx files in his
          # internal folder, hence the `*` instead of `.`
          find * -name "*.idx" -delete
          git add .
          git config --global user.email "${{ github.actor }}@users.noreply.github.com"
          git config --global user.name = "${{ github.actor }}"
          git commit -a -m "update docs for ${GITHUB_REF##*/}"
          git push origin gh-pages

  update_site:
    name: 'Rebuild website'
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v2

      - uses: actions/setup-python@v2
        with:
          python-version: 3.x

      - uses: jiro4989/setup-nim-action@v1
        with:
          nim-version: 'stable'

      - name: Generate website
        run: pip install mkdocs-material && nimble -y website

      - name: Clone the gh-pages branch
        uses: actions/checkout@v2
        with:
          repository: vacp2p/nim-libp2p
          ref: gh-pages
          path: subdoc
          fetch-depth: 0

      - name: Commit & push
        run: |
          cd subdoc

          # Ensure the latest changes are fetched and reset to the remote branch
          git fetch origin gh-pages
          git reset --hard origin/gh-pages

          rm -rf docs
          mv ../site docs

          git add .
 
          if git diff-index --quiet HEAD --; then
            echo "No changes to commit"
          else
            git config --global user.email "${{ github.actor }}@users.noreply.github.com"
            git config --global user.name "${{ github.actor }}"

            git commit -m "update website"
            git push origin gh-pages
          fi