name: Publish Release

on:
  push:
    branches:
      - main  # Trigger on push to main branch

permissions:
  contents: write  # Ensure write access to push tags

jobs:
  release:
    name: Create GitHub Release
    runs-on: ubuntu-latest

    steps:
    # Step 1: Checkout the code
    - name: Checkout code
      uses: actions/checkout@v3

    # Step 2: Set up Python
    - name: Set up Python
      uses: actions/setup-python@v4
      with:
        python-version: '3.x'

    # Step 3: Install dependencies
    - name: Install dependencies
      run: pip install toml

    # Step 4: Extract version from pyproject.toml
    - name: Extract version
      id: get_version
      run: |
        VERSION=$(python -c "import toml; print(toml.load('pyproject.toml')['project']['version'])")
        echo "VERSION=$VERSION" >> $GITHUB_ENV

    # Step 5: Check if tag already exists
    - name: Check if tag exists
      id: check_tag
      run: |
        if git rev-parse "v${{ env.VERSION }}" >/dev/null 2>&1; then
          echo "Tag v${{ env.VERSION }} already exists."
          exit 0
        fi

    # Step 6: Create and push a new tag (if it doesn't exist)
    - name: Create Git tag
      run: |
        git config --global user.name "github-actions[bot]"
        git config --global user.email "github-actions[bot]@users.noreply.github.com"
        git tag -a "v${{ env.VERSION }}" -m "Release v${{ env.VERSION }}"
        git push origin "v${{ env.VERSION }}"

    # Step 7: Create GitHub release (if tag didn't exist)
    - name: Create GitHub Release
      uses: softprops/action-gh-release@v1
      with:
        tag_name: "v${{ env.VERSION }}"
      env:
        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}