name: Update TypeSpec Generator Version

on:
  schedule:
    # Run weekly on Mondays at 9 AM UTC
    - cron: '0 9 * * 1'
  workflow_dispatch:
    # Allow manual triggering
  repository_dispatch:
    # Allow triggering from TypeSpec repository on new releases
    types: [typespec-release]

jobs:
  update-generator:
    runs-on: ubuntu-latest
    permissions:
      contents: write
      pull-requests: write
    
    steps:
      - name: Checkout code
        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
        with:
          token: ${{ secrets.GITHUB_TOKEN }}
          
      - name: Setup Node.js
        uses: actions/setup-node@53b83947a5a98c8d113130e565377fae1a50d02f # v6.3.0
        with:
          node-version: '22.x'
          
      - name: Setup .NET
        uses: actions/setup-dotnet@c2fa09f4bde5ebb9d1777cf28262a3eb3db3ced7 # v5.2.0
        with:
          # Automatically read .NET SDK version from global.json to stay in sync
          global-json-file: global.json
          
      - name: Check for generator updates
        id: check-updates
        run: |
          # Get current version from the OpenAI package.json file
          CURRENT_VERSION=$(node -p "require('./codegen/package.json').dependencies['@typespec/http-client-csharp']" 2>/dev/null || echo "unknown")
          
          echo "Current OpenAI version: $CURRENT_VERSION"
          
          # Get latest version from npm registry
          LATEST_VERSION=$(npm view @typespec/http-client-csharp version 2>/dev/null || echo "unknown")
          echo "Latest version from npm: $LATEST_VERSION"
          
          # Validate we got valid versions
          if [ "$CURRENT_VERSION" = "unknown" ] || [ "$LATEST_VERSION" = "unknown" ]; then
            echo "Error: Failed to get version information"
            echo "Current: $CURRENT_VERSION, Latest: $LATEST_VERSION"
            exit 1
          fi
          
          # Compare versions (simple string comparison for alpha versions)
          if [ "$CURRENT_VERSION" != "$LATEST_VERSION" ]; then
            echo "Update needed: $CURRENT_VERSION -> $LATEST_VERSION"
            echo "needs-update=true" >> $GITHUB_OUTPUT
            echo "current-version=$CURRENT_VERSION" >> $GITHUB_OUTPUT
            echo "latest-version=$LATEST_VERSION" >> $GITHUB_OUTPUT
          else
            echo "No update needed - already at latest version: $CURRENT_VERSION"
            echo "needs-update=false" >> $GITHUB_OUTPUT
          fi
          
      - name: Update generator version and create PR
        if: steps.check-updates.outputs.needs-update == 'true'
        run: |
          LATEST_VERSION="${{ steps.check-updates.outputs.latest-version }}"
          
          # Use the PowerShell script to handle the entire update process (following TypeSpec pattern)
          pwsh ./scripts/Submit-GeneratorUpdatePr.ps1 \
            -PackageVersion "$LATEST_VERSION" \
            -AuthToken "${{ secrets.GITHUB_TOKEN }}" \
            -RepoPath "." \
            -ActionRunUrl "${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}"