release-on-merge.yml

name: Release on Merge

on:
  pull_request:
    types:
      - closed

jobs:
  release:
    if: github.event.pull_request.merged == true
    runs-on: ubuntu-latest

    permissions:
      contents: write

    steps:
      - name: Checkout code
        uses: actions/checkout@v4
        with:
          fetch-depth: 0 # Ensures full history for comparison

      - name: Setup Node.js
        uses: actions/setup-node@v4
        with:
          node-version: "20"

      - name: Install dependencies
        run: npm ci

      - name: Check for version change
        id: check_version
        run: |
          PREV_VERSION=$(git show HEAD^:package.json | jq -r .version)
          NEW_VERSION=$(jq -r .version package.json)
          echo "Previous version: $PREV_VERSION"
          echo "New version: $NEW_VERSION"
          if [ "$PREV_VERSION" != "$NEW_VERSION" ]; then
            echo "Version has changed to $NEW_VERSION"
            echo "VERSION_CHANGED=true" >> $GITHUB_ENV
            echo "RELEASE_TAG=v$NEW_VERSION" >> $GITHUB_ENV
          else
            echo "No version change detected."
            echo "VERSION_CHANGED=false" >> $GITHUB_ENV
          fi

      - name: Create GitHub Release
        if: env.VERSION_CHANGED == 'true'
        uses: softprops/action-gh-release@v1
        with:
          tag_name: ${{ env.RELEASE_TAG }}
          name: Release ${{ env.RELEASE_TAG }}
          draft: false
          prerelease: false
          generate_release_notes: true
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - name: Publish to NPM
        if: env.VERSION_CHANGED == 'true'
        run: |
          bash ./bin/publish-npm
        env:
          NPM_TOKEN: ${{ secrets.VLM_NPM_TOKEN || secrets.NPM_TOKEN }}