version-bump.yml

name: Version Bump

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

jobs:
  bump-version:
    name: Auto Version Bump
    if: "!contains(github.event.head_commit.message, 'chore: bump version')"
    runs-on: ubuntu-latest
    timeout-minutes: 10
    permissions:
      contents: write
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          fetch-depth: 2
          token: ${{ secrets.GITHUB_TOKEN }}

      - name: Check if version was manually changed
        id: check_manual
        run: |
          OLD_VERSION=$(git show HEAD^:pyproject.toml | grep -E '^version\s*=' | sed 's/version = "\(.*\)"/\1/')
          NEW_VERSION=$(grep -E '^version\s*=' pyproject.toml | sed 's/version = "\(.*\)"/\1/')
          if [ "$OLD_VERSION" != "$NEW_VERSION" ]; then
            echo "skip=true" >> $GITHUB_OUTPUT
            echo "Version was manually changed from $OLD_VERSION to $NEW_VERSION, skipping auto-bump"
          else
            echo "skip=false" >> $GITHUB_OUTPUT
          fi

      - name: Get current version
        if: steps.check_manual.outputs.skip == 'false'
        id: get_version
        run: |
          CURRENT_VERSION=$(grep -E '^version\s*=' pyproject.toml | sed 's/version = "\(.*\)"/\1/')
          echo "current=$CURRENT_VERSION" >> $GITHUB_OUTPUT

      - name: Determine bump type
        if: steps.check_manual.outputs.skip == 'false'
        id: bump_type
        run: |
          if [ "${{ github.event_name }}" = "workflow_dispatch" ]; then
            echo "type=${{ github.event.inputs.bump_type }}" >> $GITHUB_OUTPUT
          else
            echo "type=patch" >> $GITHUB_OUTPUT
          fi

      - name: Bump version
        if: steps.check_manual.outputs.skip == 'false'
        id: bump_version
        run: |
          CURRENT="${{ steps.get_version.outputs.current }}"
          IFS='.' read -r MAJOR MINOR PATCH <<< "$CURRENT"

          case "${{ steps.bump_type.outputs.type }}" in
            major)
              NEW_MAJOR=$((MAJOR + 1))
              NEW_VERSION="$NEW_MAJOR.0.0"
              ;;
            minor)
              NEW_MINOR=$((MINOR + 1))
              NEW_VERSION="$MAJOR.$NEW_MINOR.0"
              ;;
            patch)
              NEW_PATCH=$((PATCH + 1))
              NEW_VERSION="$MAJOR.$MINOR.$NEW_PATCH"
              ;;
          esac

          echo "new=$NEW_VERSION" >> $GITHUB_OUTPUT
          echo "Bumping version from $CURRENT to $NEW_VERSION (type: ${{ steps.bump_type.outputs.type }})"

      - name: Update pyproject.toml
        if: steps.check_manual.outputs.skip == 'false'
        run: |
          sed -i 's/^version = ".*"/version = "${{ steps.bump_version.outputs.new }}"/' pyproject.toml

      - name: Commit version bump
        if: steps.check_manual.outputs.skip == 'false'
        run: |
          git config user.name "github-actions[bot]"
          git config user.email "github-actions[bot]@users.noreply.github.com"
          git add pyproject.toml
          git commit -m "chore: bump version to ${{ steps.bump_version.outputs.new }}"
          git push

      - name: Create git tag
        if: steps.check_manual.outputs.skip == 'false'
        run: |
          git tag "v${{ steps.bump_version.outputs.new }}"
          git push origin "v${{ steps.bump_version.outputs.new }}"