publish.yml

name: Publish

on:
  push:
  
jobs:
  version:
    runs-on: ubuntu-latest

    outputs:
      description: "New version identifier (if changed)"
      version: ${{ steps.version.outputs.version }}
  
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          fetch-depth: 0
          sparse-checkout: package.json
  
      - name: Check version
        id: version
        run: |
          set -e -o pipefail
          BEFORE_VERSION=$(git show "${{ github.event.before }}:package.json" | jq -r .version)
          AFTER_VERSION=$(git show "${{ github.event.after }}:package.json" | jq -r .version)
      
          if [ "$BEFORE_VERSION" != "$AFTER_VERSION" ]; then
            echo "Version changed from $BEFORE_VERSION to $AFTER_VERSION"
            echo "version=$AFTER_VERSION" >> "$GITHUB_OUTPUT"
          fi

  tag:
    runs-on: ubuntu-latest
  
    permissions:
      contents: write

    # We only tag on pushes to main, when the version has changed
    needs: version
    if: github.ref == 'refs/heads/main' && ${{ needs.version.outputs.version != '' }}

    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          sparse-checkout: package.json
  
      - name: Tag version
        run: |
          set -e -o pipefail
          git tag "${{ needs.version.outputs.version }}" "${{ github.event.after }}"
          git push origin "${{ needs.version.outputs.version }}"

  
  publish:
    runs-on: ubuntu-latest
  
    permissions:
      packages: write

    # Version changes in any branch can be published
    needs: version
    if: ${{ needs.version.outputs.version != '' }}
  
    steps:
      - name: Checkout commit
        uses: actions/checkout@v4

      - name: Install Node.js
        uses: actions/setup-node@v4
        with:
          node-version-file: .nvmrc
          cache: npm
          registry-url: https://npm.pkg.github.com
          scope: '@alveusgg'
      
      - name: Cache optimized assets
        uses: actions/cache@v4
        with:
          path: build/assets
          key: optimized-assets-${{ hashFiles('src/assets/**') }}
          restore-keys: |
            optimized-assets-

      - name: Install dependencies
        run: npm ci

      # If this push wasn't to main, add the commit hash to the version
      - name: Update version
        if: github.ref != 'refs/heads/main'
        run: |
          set -e -o pipefail
          CURRENT_VERSION=$(jq -r .version package.json)
          NEW_VERSION="$CURRENT_VERSION-pre.${{ github.event.after }}"
          npm version --no-git-tag-version "$NEW_VERSION"

      - name: Publish package
        run: npm publish --access public
        env:
          NODE_AUTH_TOKEN: ${{ secrets.GITHUB_TOKEN }}