name: Build and Release

on:
  push:
    branches: [ main ]
    tags:
      - 'v*'
    paths:
      - "pyproject.toml"

permissions:
  contents: write # to create tag
jobs:
  deploy:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3

      # 1. tag extraction of pyproject.toml
      - name: Extract version from pyproject.toml
        id: get_version
        run: |
          VERSION=$(grep -m 1 'version = "' pyproject.toml | cut -d '"' -f 2)
          echo "Detected version: $VERSION"
          echo "VERSION=$VERSION" >> $GITHUB_ENV

      # 2. tag verification
      - name: Check if tag exists
        uses: mukunku/tag-exists-action@v1.2.0
        id: check_tag
        with: 
          tag: 'v${{ env.VERSION }}'
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      # 3. Setup environnement (if tag doesn't exist)
      - name: Set up Python
        if: steps.check_tag.outputs.exists == 'false'
        uses: actions/setup-python@v4
        with:
          python-version: "3.9"

      - name: Install dependencies
        if: steps.check_tag.outputs.exists == 'false'
        run: |
          python -m pip install --upgrade pip
          pip install build

      # 4. Compilation (.whl and .tar.gz)
      - name: Build package
        if: steps.check_tag.outputs.exists == 'false'
        run: python -m build

      # 5. auto creation of tag and github release
      - name: Create Release and Upload Assets
        if: steps.check_tag.outputs.exists == 'false'
        uses: softprops/action-gh-release@v1
        with:
          tag_name: v${{ env.VERSION }}      # Ex: v1.0.2
          name: Release v${{ env.VERSION }}   # release title
          files: dist/*                       # files to upload
          generate_release_notes: true        # generate changelog data
          draft: false
          prerelease: false