release-on-semver-tag.yml

name: Release on semver tag
on:
  push:
    tags:
      - '[0-9]+.[0-9]+.[0-9]+'

jobs:
  release:
    env:
      tag: ${{ github.ref_name }}
      tag_ref: ${{ github.ref }}
      release_tar_name: elements-${{ github.ref_name }}.tar.gz
      base_branch: "dev"
      base_branch_ref: "origin/dev"
      dist_branch: dist/frontend

    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      - name: Pull main branch
        run: |
          git fetch origin $base_branch
      - name: Are we on the tip of the main branch?
        run: |
          set -e -x
          git fetch origin
          exec >> $GITHUB_ENV
          if [ "$(git rev-parse $tag_ref)" = "$(git rev-parse $base_branch_ref)" ]; then
            echo is_uptodate=true
          else
            echo is_uptodate=false
          fi
      - uses: andymckay/cancel-action@0.2
        if: ${{ env.is_uptodate == 'false' }}

      - name: Setup Node
        uses: actions/setup-node@v2
        with:
          node-version: '14'
      - name: Install dependencies
        run: yarn --frozen-lockfile --network-timeout 1000000
      - run: yarn dist

      - name: Pluck gh-pages/ directory out of dist/
        run: |
          mkdir gh-pages
          (cd dist; tar --exclude package.json -clf - .) | \
            (cd gh-pages; tar xpvf -)

      - uses: peaceiris/actions-gh-pages@v3
        with:
          github_token: ${{ secrets.GITHUB_TOKEN }}
          publish_dir: ./gh-pages

      - name: Pluck frontend/ directory out of dist/
        run: |
          mkdir frontend
          (cd dist; tar --exclude components --exclude docs \
                        --exclude images/styleguide --exclude index.html \
                        --exclude "reader.*" -clf - .) | \
            (cd frontend; tar xpvf -)

      - name: Deploy to “dist/frontend” branch
        uses: peaceiris/actions-gh-pages@v3
        with:
          github_token: ${{ secrets.GITHUB_TOKEN }}
          publish_dir: ./frontend
          publish_branch: ${{ env.dist_branch }}

      - name: Pluck release/ out of dist/
        # The placement scheme is that of https://www.npmjs.com/package/epfl-theme-elements
        run: |
          set -e -x
          mkdir -p release/dist/icons release/dist/css release/dist/js
          cp $(find dist/ -name icons -prune -false -o -name "*.svg") \
             dist/icons/* \
             dist/favicons/*.png dist/favicons/*.ico \
             release/dist/icons/
          cp dist/package.json         release/
          cp dist/css/elements.min.css release/dist/css/elements.min.css
          cp dist/js/elements.min.js   release/dist/js/elements.min.js

      - name: Create release package
        # The placement scheme is that of https://www.npmjs.com/package/epfl-theme-elements
        run: |
          set -e -x
          tar -Crelease -zcf $release_tar_name .

      - uses: "marvinpinto/action-automatic-releases@v1.2.1"
        with:
          repo_token: "${{ secrets.GITHUB_TOKEN }}"
          prerelease: false
          files: |
            ${{ env.release_tar_name }}