publish.yml

name: Publish to npm

on:
  push:
    branches:
      - main
    paths:
      - 'package.json'

jobs:
  check-version:
    runs-on: ubuntu-latest
    outputs:
      version_changed: ${{ steps.check.outputs.version_changed }}
      new_version: ${{ steps.check.outputs.new_version }}
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          fetch-depth: 2

      - name: Check if version changed
        id: check
        run: |
          # Get current version
          CURRENT_VERSION=$(node -p "require('./package.json').version")
          echo "Current version: $CURRENT_VERSION"

          # Get previous version
          git checkout HEAD~1 -- package.json 2>/dev/null || true
          PREVIOUS_VERSION=$(node -p "require('./package.json').version" 2>/dev/null || echo "0.0.0")
          git checkout HEAD -- package.json

          echo "Previous version: $PREVIOUS_VERSION"

          if [ "$CURRENT_VERSION" != "$PREVIOUS_VERSION" ]; then
            echo "Version changed from $PREVIOUS_VERSION to $CURRENT_VERSION"
            echo "version_changed=true" >> $GITHUB_OUTPUT
            echo "new_version=$CURRENT_VERSION" >> $GITHUB_OUTPUT
          else
            echo "Version unchanged"
            echo "version_changed=false" >> $GITHUB_OUTPUT
          fi

  publish:
    needs: check-version
    if: needs.check-version.outputs.version_changed == 'true'
    runs-on: ubuntu-latest
    permissions:
      contents: write
      id-token: write
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Setup Node.js
        uses: actions/setup-node@v4
        with:
          node-version: '20'
          registry-url: 'https://registry.npmjs.org'
          cache: 'npm'

      - name: Install dependencies
        run: npm ci

      - name: Run tests
        run: npm run test:run

      - name: Build
        run: npm run build

      - name: Publish to npm
        run: npm publish --provenance --access public
        env:
          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}

      - name: Create GitHub Release
        uses: softprops/action-gh-release@v2
        with:
          tag_name: v${{ needs.check-version.outputs.new_version }}
          name: v${{ needs.check-version.outputs.new_version }}
          generate_release_notes: true
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}