name: CI Version Bump

on:
  push:
    branches:
      - main
  pull_request:
    branches:
      - main

jobs:
  version-bump:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout code
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Set up Python
        uses: actions/setup-python@v2
        with:
          python-version: '3.x'

      - name: Install semver
        run: |
          pip install semver

      - name: Bump version
        id: bump-version
        run: |
          CURRENT_VERSION=$(grep -oP '^version: \K.*' n8n/Chart.yaml)
          N8N_VERSION=$(grep -oP '^appVersion: "\K.*(?=")' n8n/Chart.yaml)
          TEMPLATE_CHANGED=$(git diff --name-only HEAD~1 HEAD | grep -E 'n8n/templates/.*\.yaml' || true)
          if [[ $TEMPLATE_CHANGED ]]; then
            NEW_VERSION=$(python -c "import semver; print(semver.VersionInfo.parse('$CURRENT_VERSION').bump_minor())")
          else
            NEW_VERSION=$(python -c "import semver; print(semver.VersionInfo.parse('$CURRENT_VERSION').bump_patch())")
          fi
          echo "New version: $NEW_VERSION"
          sed -i "s/^version: .*/version: $NEW_VERSION/" n8n/Chart.yaml

      - name: Commit changes
        if: github.ref == 'refs/heads/main'
        run: |
          git config --global user.name 'github-actions[bot]'
          git config --global user.email 'github-actions[bot]@users.noreply.github.com'
          git add n8n/Chart.yaml
          git commit -m "ci: bump chart version to $NEW_VERSION"
          git push

      - name: Create release
        if: github.ref == 'refs/heads/main'
        uses: actions/create-release@v1
        with:
          tag_name: ${{ steps.bump-version.outputs.NEW_VERSION }}
          release_name: Release ${{ steps.bump-version.outputs.NEW_VERSION }}
          body: |
            Automated release for version ${{ steps.bump-version.outputs.NEW_VERSION }}
          draft: false
          prerelease: false

      - name: Comment on PR
        if: github.event_name == 'pull_request'
        uses: thollander/actions-comment-pull-request@v3
        with:
          message: |
            Next version to publish after this PR is merged: `${{ steps.bump-version.outputs.NEW_VERSION }}`
          comment_tag: next_version