name: Update README from CHANGELOG

on:
  push:
    paths:
      - CHANGELOG.md

jobs:
  update-readme:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Extract latest changelog
        run: |
          awk '/^## \[/{if (++n==1) print; else exit} {print}' CHANGELOG.md > latest.txt

      - name: Update README
        run: |
          sed -i '/<!-- CHANGELOG:START -->/,/<!-- CHANGELOG:END -->/{
          /<!-- CHANGELOG:START -->/!{
          /<!-- CHANGELOG:END -->/!d
          }}' README.md

          sed -i '/<!-- CHANGELOG:START -->/r latest.txt' README.md

      - name: Commit changes
        run: |
          git config user.name "github-actions"
          git config user.email "actions@github.com"
          git add README.md
          git commit -m "docs: update latest release in README"
          git push