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

jobs:
  build:
    timeout-minutes: 20

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

      - uses: jiro4989/setup-nim-action@v1
        with:
          nim-version: '1.6.6'

      - name: Generate doc
        run: |
          nim --version
          nimble --version
          nimble install -dy
          # nim doc can "fail", but the doc is still generated
          nim doc --git.url:https://github.com/status-im/nim-chronos --git.commit:master --outdir:docs --project chronos || true

          # check that the folder exists
          ls docs

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

      - name: Commit & push
        run: |
          cd subdoc

          # Update / create this branch doc
          rm -rf docs
          mv ../docs .

          # 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"
          git push origin gh-pages