name: Auto Version Bump

on:
  workflow_dispatch:
    inputs:
      bump_type:
        description: 'Version bump type'
        required: true
        type: choice
        options:
          - patch
          - minor
          - major
      update_readme:
        description: 'Update README with changes'
        required: false
        type: boolean
        default: true

jobs:
  bump-version:
    name: Bump Version
    runs-on: ubuntu-latest
    
    steps:
    - name: Checkout code
      uses: actions/checkout@v4
      with:
        token: ${{ secrets.GITHUB_TOKEN }}
    
    - name: Set up Python
      uses: actions/setup-python@v5
      with:
        python-version: "3.13"
    
    - name: Install dependencies
      run: pip install toml
    
    - name: Bump version
      id: bump
      run: |
        python3 << 'EOF'
        import toml
        import sys
        
        # Read current version
        with open('nexus-mcp/pyproject.toml', 'r') as f:
            config = toml.load(f)
        
        current = config['project']['version']
        major, minor, patch = map(int, current.split('.'))
        
        bump_type = '${{ github.event.inputs.bump_type }}'
        
        if bump_type == 'major':
            major += 1
            minor = 0
            patch = 0
        elif bump_type == 'minor':
            minor += 1
            patch = 0
        else:  # patch
            patch += 1
        
        new_version = f"{major}.{minor}.{patch}"
        
        # Update version
        config['project']['version'] = new_version
        
        with open('nexus-mcp/pyproject.toml', 'w') as f:
            toml.dump(config, f)
        
        print(f"{current}→{new_version}")
        
        # Export for GitHub Actions
        with open(process.env['GITHUB_OUTPUT'], 'a') as f:
            f.write(f"old_version={current}\n")
            f.write(f"new_version={new_version}\n")
        EOF
    
    - name: Update README
      if: github.event.inputs.update_readme == 'true'
      run: |
        DATE=$(date +"%Y-%m-%d")
        OLD="${{ steps.bump.outputs.old_version }}"
        NEW="${{ steps.bump.outputs.new_version }}"
        
        # Add version entry to README
        sed -i "s/version = \"$OLD\"/version = \"$NEW\"/" nexus-mcp/pyproject.toml
        
        echo "Updated version: $OLD → $NEW"
    
    - name: Commit changes
      run: |
        git config --local user.email "github-actions[bot]@users.noreply.github.com"
        git config --local user.name "github-actions[bot]"
        git add nexus-mcp/pyproject.toml
        git commit -m "chore: bump version to ${{ steps.bump.outputs.new_version }}"
        git tag "v${{ steps.bump.outputs.new_version }}"
    
    - name: Push changes
      uses: ad-m/github-push-action@master
      with:
        github_token: ${{ secrets.GITHUB_TOKEN }}
        branch: ${{ github.ref }}
        tags: true
    
    - name: Create Release Notes
      run: |
        echo "## Release v${{ steps.bump.outputs.new_version }}" > release_notes.md
        echo "" >> release_notes.md
        echo "**Previous version:** ${{ steps.bump.outputs.old_version }}" >> release_notes.md
        echo "**Bump type:** ${{ github.event.inputs.bump_type }}" >> release_notes.md
        echo "" >> release_notes.md
        echo "### Changes" >> release_notes.md
        git log v${{ steps.bump.outputs.old_version }}..HEAD --pretty=format:"- %s" >> release_notes.md
        
        cat release_notes.md