changelog-preview.yml

name: Changelog Preview

on:
  pull_request:

jobs:
  previewChangelog:
    name: Preview Changelog
    runs-on: ubuntu-latest
   # if: ${{ !github.event.pull_request.draft }}
    steps:
      - uses: actions/checkout@v4

      - uses: actions/setup-node@v4
        with:
          node-version: lts/*

      - uses: actions/cache@v4
        with:
          path: ~/.npm
          key: ${{ runner.os }}-node-${{ hashFiles('package-lock.json') }}

      - name: Install npm packages
        run: npm ci

      - name: Generate Changelog Preview
        id: changelog-preview
        run: |
          changelog=$(npm run --silent release-please-changelog-preview -- --token=${{ secrets.GITHUB_TOKEN }} --target-branch=${{ github.head_ref || github.ref_name }})
          
          echo "changelog<<EOF
          $changelog
          EOF" >> "$GITHUB_OUTPUT"

      - name: Comment on PR
        uses: marocchino/sticky-pull-request-comment@v2
        if: ${{ steps.changelog-preview.outputs.changelog != '' }}
        with:
          skip_unchanged: true
          header: changelogPreview
          message: |
            This is a preview of the changelog of the next release:
            
            ${{ steps.changelog-preview.outputs.changelog }}

      - name: Comment on PR
        uses: marocchino/sticky-pull-request-comment@v2
        if: ${{ steps.changelog-preview.outputs.changelog == '' }}
        with:
          header: changelogPreview
          delete: true