name: Docs

on:
  release:
    types: [published]
  workflow_dispatch:

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      - uses: actions/setup-node@v1
        with:
            node-version: 16
      - name: Install Dependencies
        continue_on_error: true
        run: | # We install documentation.js globally so that we can use `documentation` instead of `node_modules/.../documentation`.
          npm install
          npm install -g documentation
          npm install -g vuepress
      - name: Generate Docs
        run: |
          npm run docs:build
      - name: Commit changes
        continue-on-error: true
        run: |
          git config user.name github-actions
          git config user.email github-actions@github.com
          git add ./docs/
          git commit -m "New docs"
          git push --set-upstream origin main
          git reset --hard  
      - name: Deploy to gh pages
        run: |
          git fetch
          git checkout gh-pages
          git pull origin gh-pages
          rm -rf latest/
          git checkout main -- docs/.vuepress/dist/
          mkdir ${{ github.event.release.tag_name }}
          mkdir latest
          mv docs/.vuepress/dist/* ${{ github.event.release.tag_name }}
          grep -rl '/latest' ./${{ github.event.release.tag_name }} | xargs sed -i 's-/latest-/${{ github.event.release.tag_name }}-g'
          rm -rf docs/
          git checkout main -- docs/.vuepress/dist/
          mv docs/.vuepress/dist/* ./latest/
          rm -rf docs/
          git checkout main -- demo/
          git checkout main -- web/
          git checkout main -- tests/
          echo "https://epi.js.org" > CNAME
          echo "" > .nojekyll
      - name: Push changes
        continue-on-error: true
        run: |
          git switch gh-pages
          git config user.name github-actions
          git config user.email github-actions@github.com
          git add .
          git commit -m "New docs"
          git push --set-upstream origin gh-pages