bump-version.yml

name: Bump Version

on:
  workflow_dispatch:
    inputs:
      bump_type:
        description: "Version bump type"
        required: true
        type: choice
        options:
          - patch
          - minor
          - major

jobs:
  bump-version:
    runs-on: ubuntu-latest
    permissions:
      contents: write
      pull-requests: write

    steps:
      - name: Assert dev branch
        run: |
          if [ "$GITHUB_REF" != "refs/heads/dev" ]; then
            echo "Error: This workflow must be run from the dev branch (got $GITHUB_REF)."
            exit 1
          fi

      - name: Checkout
        uses: actions/checkout@v6

      - name: Install uv
        uses: astral-sh/setup-uv@v8.1.0
        with:
          python-version: "3.12"

      - name: Bump version in pyproject.toml
        id: bump
        env:
          BUMP_TYPE: ${{ github.event.inputs.bump_type }}
        run: |
          uv run - << 'EOF'
          # /// script
          # dependencies = ["tomli-w"]
          # ///
          import tomllib, tomli_w, os

          bump_type = os.environ["BUMP_TYPE"]

          with open("pyproject.toml", "rb") as f:
              data = tomllib.load(f)

          old_version = data["project"]["version"]
          major, minor, patch = map(int, old_version.split("."))

          if bump_type == "major":
              major += 1
              minor = 0
              patch = 0
          elif bump_type == "minor":
              minor += 1
              patch = 0
          else:
              patch += 1

          new_version = f"{major}.{minor}.{patch}"
          data["project"]["version"] = new_version

          with open("pyproject.toml", "wb") as fp:
              tomli_w.dump(data, fp)

          with open(os.environ["GITHUB_OUTPUT"], "a") as f:
              f.write(f"old_version={old_version}\n")
              f.write(f"new_version={new_version}\n")

          print(f"Version bumped: {old_version} -> {new_version}")
          EOF

      - name: Configure git
        run: |
          git config user.name "${{ github.actor }}"
          git config user.email "${{ github.actor_id }}+${{ github.actor }}@users.noreply.github.com"

      - name: Create PR
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          BRANCH="bump-version/${{ steps.bump.outputs.new_version }}"
          git checkout -b "$BRANCH"
          git add pyproject.toml
          git commit -m "bump version ${{ steps.bump.outputs.old_version }} -> ${{ steps.bump.outputs.new_version }}"
          git push origin "$BRANCH"
          gh pr create \
            --title "bump version ${{ steps.bump.outputs.old_version }} -> ${{ steps.bump.outputs.new_version }}" \
            --body "Automated ${{ github.event.inputs.bump_type }} version bump triggered by @${{ github.actor }}." \
            --base dev \
            --head "$BRANCH" \
            --label "release"