name: Changelog

on:
  push:
    branches: [ main ]
    tags:
      - "v*"
  workflow_dispatch:

jobs:
  changelog:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout (full history + tags)
        uses: actions/checkout@v4
        with:
          fetch-depth: 0
      # fetch-depth: 0 is important so git-cliff can see tags/history properly :contentReference[oaicite:3]{index=3}

      - name: Generate CHANGELOG.md (Keep a Changelog)
        uses: orhun/git-cliff-action@v4
        with:
          config: cliff.toml
          args: --verbose
        env:
          OUTPUT: CHANGELOG.md

      - name: Commit and push if changed
        shell: bash
        run: |
          set -e
          if git diff --quiet -- CHANGELOG.md; then
            echo "No changelog changes."
            exit 0
          fi

          git config user.name "gitea-actions[bot]"
          git config user.email "actions@localhost"

          git add CHANGELOG.md
          git commit -m "docs(changelog): update changelog [skip ci]"
          git push