name: Release - Northern Thailand Ping River Monitor

on:
  push:
    tags:
      - 'v*.*.*'
  workflow_dispatch:
    inputs:
      version:
        description: 'Release version (e.g., v3.1.0)'
        required: true
        type: string

env:
  PYTHON_VERSION: '3.11'
  REGISTRY: git.b4l.co.th
  IMAGE_NAME: b4l/northern-thailand-ping-river-monitor

jobs:
  # Create release
  create-release:
    name: Create Release
    runs-on: ubuntu-latest
    outputs:
      version: ${{ steps.version.outputs.version }}
      
    steps:
    - name: Checkout code
      uses: actions/checkout@v4
      with:
        fetch-depth: 0
        
    - name: Get version
      id: version
      run: |
        if [ "${{ github.event_name }}" = "workflow_dispatch" ]; then
          echo "version=${{ github.event.inputs.version }}" >> $GITHUB_OUTPUT
        else
          echo "version=${GITHUB_REF#refs/tags/}" >> $GITHUB_OUTPUT
        fi
        
    - name: Generate changelog
      id: changelog
      run: |
        # Generate changelog from git commits
        echo "## Changes" > CHANGELOG.md
        git log --pretty=format:"- %s" $(git describe --tags --abbrev=0 HEAD^)..HEAD >> CHANGELOG.md || echo "- Initial release" >> CHANGELOG.md
        echo "" >> CHANGELOG.md
        echo "## Docker Images" >> CHANGELOG.md
        echo "- \`${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ steps.version.outputs.version }}\`" >> CHANGELOG.md
        echo "- \`${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest\`" >> CHANGELOG.md
        
    - name: Create Release
      uses: actions/create-release@v1
      env:
        GITHUB_TOKEN: ${{ secrets.GITEA_TOKEN }}
      with:
        tag_name: ${{ steps.version.outputs.version }}
        release_name: Northern Thailand Ping River Monitor ${{ steps.version.outputs.version }}
        body_path: CHANGELOG.md
        draft: false
        prerelease: false

  # Build and test for release
  test-release:
    name: Test Release Build
    runs-on: ubuntu-latest
    needs: create-release
    strategy:
      matrix:
        python-version: ['3.9', '3.10', '3.11', '3.12']
        
    steps:
    - name: Checkout code
      uses: actions/checkout@v4
      
    - name: Set up Python ${{ matrix.python-version }}
      uses: actions/setup-python@v4
      with:
        python-version: ${{ matrix.python-version }}
        
    - name: Install dependencies
      run: |
        python -m pip install --upgrade pip
        pip install -r requirements.txt
        pip install -r requirements-dev.txt
        
    - name: Run full test suite
      run: |
        python tests/test_integration.py
        python tests/test_station_management.py
        python run.py --test
        
    - name: Build Python package
      run: |
        pip install build
        python -m build
        
    - name: Upload Python package
      uses: actions/upload-artifact@v3
      with:
        name: python-package-${{ matrix.python-version }}
        path: dist/

  # Build release Docker images
  build-release:
    name: Build Release Images
    runs-on: ubuntu-latest
    needs: [create-release, test-release]
    
    steps:
    - name: Checkout code
      uses: actions/checkout@v4
      
    - name: Set up Docker Buildx
      uses: docker/setup-buildx-action@v3
      
    - name: Log in to Container Registry
      uses: docker/login-action@v3
      with:
        registry: ${{ env.REGISTRY }}
        username: ${{ github.actor }}
        password: ${{ secrets.GITEA_TOKEN }}
        
    - name: Build and push release images
      uses: docker/build-push-action@v5
      with:
        context: .
        platforms: linux/amd64,linux/arm64
        push: true
        tags: |
          ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ needs.create-release.outputs.version }}
          ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest
        labels: |
          org.opencontainers.image.title=Northern Thailand Ping River Monitor
          org.opencontainers.image.description=Real-time water level monitoring for Ping River Basin
          org.opencontainers.image.version=${{ needs.create-release.outputs.version }}
          org.opencontainers.image.source=${{ github.server_url }}/${{ github.repository }}
          org.opencontainers.image.revision=${{ github.sha }}
        cache-from: type=gha
        cache-to: type=gha,mode=max

  # Security scan for release
  security-scan:
    name: Security Scan
    runs-on: ubuntu-latest
    needs: build-release
    
    steps:
    - name: Checkout code
      uses: actions/checkout@v4
      
    - name: Run Trivy vulnerability scanner
      uses: aquasecurity/trivy-action@master
      with:
        image-ref: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ needs.create-release.outputs.version }}
        format: 'sarif'
        output: 'trivy-results.sarif'
        
    - name: Upload Trivy scan results
      uses: actions/upload-artifact@v3
      with:
        name: security-scan-results
        path: trivy-results.sarif

  # Deploy release to production
  deploy-release:
    name: Deploy Release
    runs-on: ubuntu-latest
    needs: [create-release, build-release, security-scan]
    environment:
      name: production
      url: https://ping-river-monitor.b4l.co.th
      
    steps:
    - name: Checkout code
      uses: actions/checkout@v4
      
    - name: Deploy to production
      run: |
        echo "🚀 Deploying ${{ needs.create-release.outputs.version }} to production..."
        
        # Example deployment commands (customize for your infrastructure)
        # kubectl set image deployment/ping-river-monitor app=${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ needs.create-release.outputs.version }}
        # docker-compose pull && docker-compose up -d
        # Or webhook call to your deployment system
        
        echo "✅ Deployment initiated"
        
    - name: Health check after deployment
      run: |
        echo "⏳ Waiting for deployment to stabilize..."
        sleep 60
        
        echo "🔍 Running health checks..."
        curl -f https://ping-river-monitor.b4l.co.th/health
        curl -f https://ping-river-monitor.b4l.co.th/stations
        
        echo "✅ Health checks passed!"
        
    - name: Update deployment status
      run: |
        echo "📊 Deployment Summary:"
        echo "Version: ${{ needs.create-release.outputs.version }}"
        echo "Image: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ needs.create-release.outputs.version }}"
        echo "URL: https://ping-river-monitor.b4l.co.th"
        echo "Grafana: https://grafana.ping-river-monitor.b4l.co.th"
        echo "API Docs: https://ping-river-monitor.b4l.co.th/docs"

  # Post-release validation
  validate-release:
    name: Validate Release
    runs-on: ubuntu-latest
    needs: deploy-release
    
    steps:
    - name: Comprehensive API test
      run: |
        echo "🧪 Running comprehensive API tests..."
        
        # Test all major endpoints
        curl -f https://ping-river-monitor.b4l.co.th/health
        curl -f https://ping-river-monitor.b4l.co.th/metrics
        curl -f https://ping-river-monitor.b4l.co.th/stations
        curl -f https://ping-river-monitor.b4l.co.th/measurements/latest?limit=5
        curl -f https://ping-river-monitor.b4l.co.th/scraping/status
        
        echo "✅ All API endpoints responding correctly"
        
    - name: Performance validation
      run: |
        echo "⚡ Running performance validation..."
        
        # Install Apache Bench
        sudo apt-get update && sudo apt-get install -y apache2-utils
        
        # Test response times
        ab -n 10 -c 2 https://ping-river-monitor.b4l.co.th/health
        ab -n 10 -c 2 https://ping-river-monitor.b4l.co.th/stations
        
        echo "✅ Performance validation completed"
        
    - name: Data validation
      run: |
        echo "📊 Validating data collection..."
        
        # Check if recent data is available
        response=$(curl -s https://ping-river-monitor.b4l.co.th/measurements/latest?limit=1)
        echo "Latest measurement: $response"
        
        # Validate data structure (basic check)
        if echo "$response" | grep -q "water_level"; then
          echo "✅ Data structure validation passed"
        else
          echo "❌ Data structure validation failed"
          exit 1
        fi

  # Notify stakeholders
  notify:
    name: Notify Release
    runs-on: ubuntu-latest
    needs: [create-release, validate-release]
    if: always()
    
    steps:
    - name: Notify success
      if: needs.validate-release.result == 'success'
      run: |
        echo "🎉 Release ${{ needs.create-release.outputs.version }} deployed successfully!"
        echo "🌐 Production URL: https://ping-river-monitor.b4l.co.th"
        echo "📊 Grafana: https://grafana.ping-river-monitor.b4l.co.th"
        echo "📚 API Docs: https://ping-river-monitor.b4l.co.th/docs"
        
        # Add notification to Slack, Discord, email, etc.
        # curl -X POST -H 'Content-type: application/json' \
        #   --data '{"text":"🎉 Northern Thailand Ping River Monitor ${{ needs.create-release.outputs.version }} deployed successfully!"}' \
        #   ${{ secrets.SLACK_WEBHOOK_URL }}
        
    - name: Notify failure
      if: needs.validate-release.result == 'failure'
      run: |
        echo "❌ Release ${{ needs.create-release.outputs.version }} deployment failed!"
        echo "Please check the logs and take corrective action."
        
        # Add failure notification
        # curl -X POST -H 'Content-type: application/json' \
        #   --data '{"text":"❌ Northern Thailand Ping River Monitor ${{ needs.create-release.outputs.version }} deployment failed!"}' \
        #   ${{ secrets.SLACK_WEBHOOK_URL }}