version-bump.yml

name: Version bump + tag

# When commits land on `main`, decide a SemVer bump from
# Conventional-Commit subjects and (optionally) push a `vX.Y.Z` tag
# that fires the `release.yml` pipeline.
#
# Bump rules (matches the .claude/skills/version-bump skill):
#   * `BREAKING CHANGE` / `!:` in any commit since the last tag → major
#   * `feat:` → minor
#   * `fix:` / `perf:` / `revert:` → patch
#   * `chore:` / `docs:` / `ci:` / `test:` / `refactor:` / `style:` /
#     `build:` only → no bump (skip)
#
# Override: push a commit whose body or footer contains
# `Release-As: <version>` and the workflow will set that exact
# version. Pass `dry_run=true` via workflow_dispatch to print the
# decision without committing or tagging.
#
# Mirrors the rakka workspace's version-bump.yml — the only difference
# is the bot identity and the tag namespace ("rakka-accel v…").

on:
  push:
    branches: [main]
  workflow_dispatch:
    inputs:
      dry_run:
        description: "Print the bump decision but skip commit + tag"
        required: false
        default: "false"
      force:
        description: "Force a bump (patch|minor|major) even when commits are skip-only"
        required: false
        default: ""

concurrency:
  group: version-bump
  cancel-in-progress: false

permissions:
  contents: write

jobs:
  decide-and-bump:
    name: Decide bump + tag
    runs-on: ubuntu-latest
    # Skip when the head commit is itself a release commit so the
    # workflow doesn't loop on its own output.
    if: github.event_name == 'workflow_dispatch' || !startsWith(github.event.head_commit.message, 'chore(release):')
    steps:
      - name: Checkout sibling rakka
        uses: actions/checkout@v4
        with:
          repository: rustakka/rakka
          path: rakka
      - name: Checkout rakka-accel (full history for `git tag`)
        uses: actions/checkout@v4
        with:
          path: rakka-accel
          fetch-depth: 0

      - uses: dtolnay/rust-toolchain@stable
      - uses: Swatinem/rust-cache@v2
        with: { workspaces: rakka-accel }

      - name: Decide bump kind from Conventional Commits
        id: decide
        env:
          DRY_RUN: ${{ github.event.inputs.dry_run }}
          FORCE: ${{ github.event.inputs.force }}
        working-directory: rakka-accel
        run: |
          set -euo pipefail
          if [ -n "${FORCE:-}" ]; then
            echo "kind=$FORCE" >> "$GITHUB_OUTPUT"
            echo "Forced bump: $FORCE"
            exit 0
          fi
          last_tag=$(git tag --sort=-creatordate | head -n1 || true)
          if [ -z "$last_tag" ]; then
            range="HEAD"
          else
            range="${last_tag}..HEAD"
          fi
          subjects=$(git log --no-merges --pretty=format:%s%n%b "$range" || true)
          # Honor explicit "Release-As: x.y.z" override.
          release_as=$(printf '%s\n' "$subjects" | grep -E '^Release-As: ' | tail -n1 | awk '{print $2}' || true)
          if [ -n "$release_as" ]; then
            echo "kind=set:$release_as" >> "$GITHUB_OUTPUT"
            echo "Override via Release-As: $release_as"
            exit 0
          fi
          if printf '%s' "$subjects" | grep -qE 'BREAKING CHANGE|^[a-z]+(\([^)]+\))?!:'; then
            echo "kind=major" >> "$GITHUB_OUTPUT"
            exit 0
          fi
          if printf '%s' "$subjects" | grep -qE '^feat(\([^)]+\))?:'; then
            echo "kind=minor" >> "$GITHUB_OUTPUT"
            exit 0
          fi
          if printf '%s' "$subjects" | grep -qE '^(fix|perf|revert)(\([^)]+\))?:'; then
            echo "kind=patch" >> "$GITHUB_OUTPUT"
            exit 0
          fi
          echo "kind=skip" >> "$GITHUB_OUTPUT"

      - name: Bump version + refresh Cargo.lock
        if: steps.decide.outputs.kind != 'skip'
        id: bump
        working-directory: rakka-accel
        run: |
          set -euo pipefail
          kind="${{ steps.decide.outputs.kind }}"
          if [[ "$kind" == set:* ]]; then
            ver="${kind#set:}"
            cargo xtask bump --set "$ver"
          else
            cargo xtask bump "$kind"
          fi
          new_ver=$(awk '
            /^\[workspace\.package\]/ { f=1; next }
            f && /^\[/ { exit }
            f && /^version[[:space:]]*=/ {
              match($0, /"[^"]+"/)
              print substr($0, RSTART+1, RLENGTH-2)
              exit
            }' Cargo.toml)
          if [ -z "$new_ver" ]; then
            echo "::error::failed to extract bumped version from Cargo.toml"
            exit 1
          fi
          echo "version=$new_ver" >> "$GITHUB_OUTPUT"

      - name: Commit + tag
        if: steps.decide.outputs.kind != 'skip' && github.event.inputs.dry_run != 'true'
        working-directory: rakka-accel
        env:
          NEW_VERSION: ${{ steps.bump.outputs.version }}
        run: |
          set -euo pipefail
          git config user.name "rakka-accel-release-bot"
          git config user.email "release-bot@users.noreply.github.com"
          git add Cargo.toml Cargo.lock crates/rakka-accel-py/pyproject.toml 2>/dev/null || true
          git commit -m "chore(release): v${NEW_VERSION}"
          git tag -a "v${NEW_VERSION}" -m "rakka-accel v${NEW_VERSION}"
          git push origin HEAD --follow-tags

      - name: Summary
        run: |
          echo "kind=${{ steps.decide.outputs.kind }}"
          echo "version=${{ steps.bump.outputs.version || 'unchanged' }}"