name: Create Release

on:
  push:
    branches:
      - main
    paths:
      - '.claude-plugin/marketplace.json'
  workflow_dispatch:

permissions:
  contents: write

jobs:
  release:
    runs-on: ubuntu-latest
    
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          fetch-depth: 0  # Fetch all history for release notes
      
      - name: Extract version from marketplace.json
        id: get_version
        run: |
          VERSION=$(jq -r '.metadata.version' .claude-plugin/marketplace.json)
          echo "version=$VERSION" >> $GITHUB_OUTPUT
          echo "tag=v$VERSION" >> $GITHUB_OUTPUT
          echo "Extracted version: $VERSION"
      
      - name: Check if tag already exists
        id: check_tag
        run: |
          if git rev-parse "v${{ steps.get_version.outputs.version }}" >/dev/null 2>&1; then
            echo "exists=true" >> $GITHUB_OUTPUT
            echo "Tag v${{ steps.get_version.outputs.version }} already exists"
          else
            echo "exists=false" >> $GITHUB_OUTPUT
            echo "Tag v${{ steps.get_version.outputs.version }} does not exist"
          fi
      
      - name: Get previous tag
        id: previous_tag
        if: steps.check_tag.outputs.exists == 'false'
        run: |
          PREVIOUS_TAG=$(git describe --tags --abbrev=0 2>/dev/null || echo "")
          if [ -z "$PREVIOUS_TAG" ]; then
            echo "previous_tag=" >> $GITHUB_OUTPUT
            echo "No previous tag found"
          else
            echo "previous_tag=$PREVIOUS_TAG" >> $GITHUB_OUTPUT
            echo "Previous tag: $PREVIOUS_TAG"
          fi
      
      - name: Generate release notes
        id: release_notes
        if: steps.check_tag.outputs.exists == 'false'
        run: |
          VERSION="${{ steps.get_version.outputs.version }}"
          PREVIOUS_TAG="${{ steps.previous_tag.outputs.previous_tag }}"
          
          # Start release notes
          cat > release_notes.md << 'EOF'
          ## Claude Scientific Skills v$VERSION
          
          ### What's Changed
          
          EOF
          
          # Generate changelog from commits
          if [ -n "$PREVIOUS_TAG" ]; then
            echo "Changes since $PREVIOUS_TAG:" >> release_notes.md
            echo "" >> release_notes.md
            
            # Get commits with nice formatting
            git log ${PREVIOUS_TAG}..HEAD --pretty=format:"* %s (%h)" --no-merges >> release_notes.md
          else
            echo "Initial release of Claude Scientific Skills" >> release_notes.md
            echo "" >> release_notes.md
            echo "This release includes:" >> release_notes.md
            git log --pretty=format:"* %s (%h)" --no-merges --max-count=20 >> release_notes.md
          fi
          
          # Replace $VERSION in the file
          sed -i "s/\$VERSION/$VERSION/g" release_notes.md
          
          cat release_notes.md
      
      - name: Create Release
        if: steps.check_tag.outputs.exists == 'false'
        uses: softprops/action-gh-release@v1
        with:
          tag_name: ${{ steps.get_version.outputs.tag }}
          name: Claude Scientific Skills v${{ steps.get_version.outputs.version }}
          body_path: release_notes.md
          draft: false
          prerelease: false
          generate_release_notes: false
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
      
      - name: Skip release creation
        if: steps.check_tag.outputs.exists == 'true'
        run: |
          echo "Release v${{ steps.get_version.outputs.version }} already exists. Skipping release creation."