auto-release.yml

name: Release automatically
on:
  pull_request:
    branches:
      - main
    types:
      - closed

jobs:
  release-from-pr:
    name: Release from a PR that is marked with [new release]
    if: github.event.pull_request.merged == true && contains(github.event.pull_request.labels.*.name, 'new release')
    runs-on: ubuntu-latest
    steps:
      - name: Checkout 🛎️
        uses: actions/checkout@v4

      - name: Fetch the version number 📝
        id: fetch-version
        uses: actions/github-script@v7
        with:
          result-encoding: string
          script: |
            const package = require(`${process.env.GITHUB_WORKSPACE}/attractions/package.json`);
            return `v${package.version}`;

      - name: Fetch the changelog 📝
        id: fetch-changelog
        uses: actions/github-script@v7
        with:
          result-encoding: string
          script: |
            const changelog = require('fs').readFileSync('CHANGELOG.md', { encoding: 'utf-8' }).split('\n');
            const start = changelog.findIndex(line => line.startsWith('## '));
            const end = changelog.findIndex((line, index) => line.startsWith('## ') && index > start);
            return changelog.slice(start + 1, end).join('\n').trim();

      - name: Create a release 🔖
        uses: actions/github-script@v7
        env:
          CHANGELOG: ${{ steps.fetch-changelog.outputs.result }}
        with:
          script: |
            await github.rest.repos.createRelease({
              owner: context.repo.owner,
              repo: context.repo.repo,
              tag_name: "${{ steps.fetch-version.outputs.result }}",
              name: "${{ steps.fetch-version.outputs.result }}",
              body: process.env.CHANGELOG,
            });