release.yml

name: Release

on:
  push:
    tags:
      - 'v*.*.*'  # Trigger on version tags like v0.1.0, v1.0.0

permissions:
  contents: write

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

    steps:
      - name: Checkout code
        uses: actions/checkout@v4
        with:
          fetch-depth: 0  # Get all history for changelog

      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version: '3.11'

      - name: Install dependencies
        run: |
          python -m pip install --upgrade pip
          pip install build twine

      - name: Get version from tag
        id: get_version
        run: echo "VERSION=${GITHUB_REF#refs/tags/v}" >> $GITHUB_OUTPUT

      - name: Build package
        run: python -m build

      - name: Generate changelog
        id: changelog
        run: |
          # Get commits since last tag
          PREV_TAG=$(git describe --tags --abbrev=0 HEAD^ 2>/dev/null || echo "")
          if [ -z "$PREV_TAG" ]; then
            CHANGELOG=$(git log --pretty=format:"- %s (%h)" --reverse)
          else
            CHANGELOG=$(git log ${PREV_TAG}..HEAD --pretty=format:"- %s (%h)" --reverse)
          fi
          
          # Write to file for multiline handling
          echo "$CHANGELOG" > changelog.txt

      - name: Create Release
        uses: actions/create-release@v1
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          tag_name: ${{ github.ref }}
          release_name: Release ${{ steps.get_version.outputs.VERSION }}
          body_path: changelog.txt
          draft: false
          prerelease: false

      - name: Upload Release Assets
        uses: actions/upload-release-asset@v1
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          upload_url: ${{ steps.create_release.outputs.upload_url }}
          asset_path: ./dist/cascadeflow-${{ steps.get_version.outputs.VERSION }}.tar.gz
          asset_name: cascadeflow-${{ steps.get_version.outputs.VERSION }}.tar.gz
          asset_content_type: application/gzip