changelog.yml

name: Changelog

env:
  CARGO_TERM_COLOR: always
  RUST_BACKTRACE: 1
  RUSTFLAGS: "-D warnings"
  RUSTDOCFLAGS: '--deny warnings'

permissions:
  id-token: write
  packages: write
  contents: write
  pull-requests: write

on:
  workflow_dispatch:
  workflow_call:

jobs:
  changelog:
    name: Create changelog
    runs-on: ubuntu-latest
    steps:
      - name: Check out repository
        uses: actions/checkout@v4
        with:
          fetch-tags: 'true'
          fetch-depth: 0
      - name: Install Rust
        uses: dtolnay/rust-toolchain@stable
      - uses: Swatinem/rust-cache@v2
      - id: release
        run: echo "version=v$(cargo pkgid --manifest-path crates/bin/Cargo.toml | cut -d '@' -f2)" >> "$GITHUB_OUTPUT"
      - name: Install git-cliff
        run: cargo install git-cliff
      - name: Generate a changelog
        run: |
          if [ -f CHANGELOG.md ]; then
            git-cliff --config github --prepend CHANGELOG.md --latest
          else
            git-cliff --config github --output CHANGELOG.md
          fi
        env:
          OUTPUT: CHANGELOG.md
          GITHUB_REPO: ${{ github.repository }}
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
      - name: Commit changelog
        run: |
          git checkout -b "changelog/${{ steps.release.outputs.version }}"
          git config user.name 'github-actions[bot]'
          git config user.email 'github-actions[bot]@users.noreply.github.com'
          set +e
          git add CHANGELOG.md
          git commit -m "chore: Update changelog"
          git push origin "changelog/${{ steps.release.outputs.version }}" --force
      - name: Check out repository
        uses: actions/checkout@v4
        with:
          ref: "changelog/${{ steps.release.outputs.version }}"
      - name: Create pull request for changelog
        run: |
          alreadyExists=$(gh pr list --json headRefName | jq '.[] | select(.headRefName == "changelog/${{ steps.release.outputs.version }}") | any')
          if [[ "$alreadyExists" == "" ]]; then
            branch=$(git branch --show-current)
            gh pr create --head "$branch" --title "Changelog for ${{ steps.release.outputs.version }}" --body "This PR updates the changelog for version ${{ steps.release.outputs.version }}."
          fi
        env: 
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}