release.yml

name: Release

on:
  release:
    types: [published]
  workflow_dispatch:
    inputs:
      version:
        description: 'Version to release (e.g., 0.2.0)'
        required: true
        type: string

env:
  CARGO_TERM_COLOR: always

jobs:
  # =============================================================================
  # Build and Publish Wheels
  # =============================================================================
  build-wheels:
    name: Build wheels on ${{ matrix.os }}
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        os: [ubuntu-latest, macos-latest, windows-latest]
    
    steps:
      - uses: actions/checkout@v4
      
      - name: Build wheels
        uses: PyO3/maturin-action@v1
        with:
          command: build
          args: --release --out dist
          manylinux: auto
      
      - name: Upload wheels
        uses: actions/upload-artifact@v4
        with:
          name: wheels-${{ matrix.os }}
          path: dist/
          retention-days: 30

  # =============================================================================
  # Build Source Distribution
  # =============================================================================
  build-sdist:
    name: Build source distribution
    runs-on: ubuntu-latest
    
    steps:
      - uses: actions/checkout@v4
      
      - name: Install maturin
        run: pip install maturin
      
      - name: Build sdist
        run: maturin sdist --out dist
      
      - name: Upload sdist
        uses: actions/upload-artifact@v4
        with:
          name: sdist
          path: dist/
          retention-days: 30

  # =============================================================================
  # Publish to PyPI
  # =============================================================================
  publish-pypi:
    name: Publish to PyPI
    runs-on: ubuntu-latest
    needs: [build-wheels, build-sdist]
    permissions:
      id-token: write  # For trusted publishing
    
    steps:
      - name: Download all artifacts
        uses: actions/download-artifact@v4
        with:
          path: dist/
          merge-multiple: true
      
      - name: List distributions
        run: ls -la dist/
      
      - name: Publish to PyPI
        uses: pypa/gh-action-pypi-publish@release/v1
        with:
          packages-dir: dist/
          skip-existing: false

  # =============================================================================
  # Publish to TestPyPI (for testing)
  # =============================================================================
  publish-testpypi:
    name: Publish to TestPyPI
    runs-on: ubuntu-latest
    needs: [build-wheels, build-sdist]
    if: github.event_name == 'workflow_dispatch'  # Only for manual testing
    permissions:
      id-token: write
    
    steps:
      - name: Download all artifacts
        uses: actions/download-artifact@v4
        with:
          path: dist/
          merge-multiple: true
      
      - name: Publish to TestPyPI
        uses: pypa/gh-action-pypi-publish@release/v1
        with:
          repository-url: https://test.pypi.org/legacy/
          packages-dir: dist/

  # =============================================================================
  # Verify Release
  # =============================================================================
  verify-release:
    name: Verify PyPI Release
    runs-on: ubuntu-latest
    needs: publish-pypi
    steps:
      - name: Wait for PyPI
        run: sleep 60
      
      - name: Install from PyPI
        run: |
          pip install --upgrade pip
          pip install constraint-theory
      
      - name: Verify import
        run: |
          python -c "from constraint_theory import PythagoreanManifold, __version__; print(f'Version: {__version__}')"
          python -c "
          from constraint_theory import PythagoreanManifold
          m = PythagoreanManifold(200)
          x, y, noise = m.snap(0.577, 0.816)
          print(f'Snap result: ({x:.4f}, {y:.4f}), noise={noise:.6f}')
          assert abs(x - 0.6) < 0.01, f'Expected x≈0.6, got {x}'
          assert abs(y - 0.8) < 0.01, f'Expected y≈0.8, got {y}'
          print('Verification passed!')
          "
      
      - name: Run example
        run: |
          python -c "
          from constraint_theory import PythagoreanManifold, generate_triples
          
          # Create manifold
          m = PythagoreanManifold(200)
          print(f'Manifold: {m}')
          print(f'States: {m.state_count}')
          
          # Generate some triples
          triples = generate_triples(50)
          print(f'Generated {len(triples)} triples')
          
          # Test batch operation
          vectors = [[0.6, 0.8], [0.707, 0.707], [0.1, 0.995]]
          results = m.snap_batch(vectors)
          print(f'Batch results: {len(results)}')
          
          print('All checks passed!')
          "

  # =============================================================================
  # Create GitHub Release Notes
  # =============================================================================
  update-release-notes:
    name: Update Release Notes
    runs-on: ubuntu-latest
    needs: verify-release
    if: github.event_name == 'release'
    steps:
      - uses: actions/checkout@v4
      
      - name: Extract changelog
        id: changelog
        run: |
          # Extract the latest version's changelog
          VERSION=${{ github.event.release.tag_name }}
          echo "version=${VERSION}" >> $GITHUB_OUTPUT
          
          # Try to extract changelog entry
          if [ -f CHANGELOG.md ]; then
            # Get the section for this version
            sed -n "/## \[${VERSION#v}\]/,/## \[/p" CHANGELOG.md | head -n -1 > /tmp/release_notes.md
            echo "changelog<<EOF" >> $GITHUB_OUTPUT
            cat /tmp/release_notes.md >> $GITHUB_OUTPUT
            echo "EOF" >> $GITHUB_OUTPUT
          fi
      
      - name: Update release
        uses: softprops/action-gh-release@v1
        with:
          body: |
            ## Installation
            
            ```bash
            pip install constraint-theory==${{ steps.changelog.outputs.version }}
            ```
            
            ## What's Changed
            
            ${{ steps.changelog.outputs.changelog }}
            
            **Full Changelog**: https://github.com/${{ github.repository }}/compare/${{ github.event.release.tag_name }}...${{ github.sha }}
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}