docker-release.yml

name: Docker Build and Release

on:
  pull_request:
    branches: [main]
    paths:
      - 'src/**'
      - 'public/**'
      - 'server.js'
      - 'server-package.json'
      - 'Dockerfile'
      - 'package.json'
      - 'package-lock.json'
      - 'nginx*.conf'
      - 'start.sh'
      - 'index.html'
      - 'vite.config.ts'
  push:
    branches: [main]
    paths:
      - 'src/**'
      - 'public/**'
      - 'server.js'
      - 'server-package.json'
      - 'Dockerfile'
      - 'package.json'
      - 'package-lock.json'
      - 'nginx*.conf'
      - 'start.sh'
      - 'index.html'
      - 'vite.config.ts'
  release:
    types: [published]

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: ${{ github.repository }}

jobs:
  build-and-push:
    runs-on: ubuntu-latest
    outputs:
      image-url: ${{ steps.deployment.outputs.DEPLOY_URL }}
      image-tag: ${{ steps.deployment.outputs.DEPLOY_TAG }}
    permissions:
      contents: read
      packages: write
      pull-requests: write

    steps:
      - name: Checkout repository
        uses: actions/checkout@v6
        with:
          fetch-depth: 0

      - name: Fetch full git history for version injection
        run: git fetch --unshallow || true

      - 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.GITHUB_TOKEN }}

      - name: Extract metadata
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          tags: |
            # Set latest tag for main branch
            type=ref,event=branch
            type=ref,event=pr
            type=raw,value=latest,enable={{is_default_branch}}
            type=semver,pattern={{version}}
            type=semver,pattern={{major}}.{{minor}}
            type=sha,format=short
          labels: |
            org.opencontainers.image.title=Multiplayer Platformer Game
            org.opencontainers.image.description=A 2D platformer game with optional multiplayer support
            org.opencontainers.image.url=https://github.com/${{ github.repository }}
            org.opencontainers.image.source=https://github.com/${{ github.repository }}
            org.opencontainers.image.version=${{ github.ref_name }}
            org.opencontainers.image.created=${{ github.event.head_commit.timestamp }}
            org.opencontainers.image.revision=${{ github.sha }}

      - name: Build and push Docker image
        uses: docker/build-push-action@v6
        with:
          context: .
          file: ./Dockerfile
          platforms: linux/amd64,linux/arm64
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: type=gha
          cache-to: type=gha,mode=max

      - name: Generate deployment URL
        id: deployment
        run: |
          # Extract the first tag from the metadata output
          FIRST_TAG=$(echo "${{ steps.meta.outputs.tags }}" | head -n1)
          echo "DEPLOY_URL=${FIRST_TAG}" >> $GITHUB_OUTPUT

          # Extract just the tag part for display
          TAG_ONLY=$(echo "${FIRST_TAG}" | cut -d':' -f2)
          echo "DEPLOY_TAG=${TAG_ONLY}" >> $GITHUB_OUTPUT

          echo "Using image: ${FIRST_TAG}"

      - name: Test Docker image
        run: |
          echo "Testing Docker image..."
          # Pull the built image
          docker pull ${{ steps.deployment.outputs.DEPLOY_URL }}

          # Run container in background
          docker run -d --name test-container -p 8080:80 -p 3001:3001 ${{ steps.deployment.outputs.DEPLOY_URL }}

          # Wait for container to start
          sleep 20

          # Test game client (retry a few times)
          for i in {1..5}; do
            if curl -f http://localhost:8080; then
              echo "✅ Game client responding"
              break
            else
              echo "Attempt $i failed, retrying..."
              sleep 5
            fi
          done

          # Test multiplayer health check (optional, don't fail on this)
          curl -f http://localhost:3001/health && echo "✅ Multiplayer server responding" || echo "⚠️ Multiplayer server not ready"

          # Show container logs for debugging
          echo "=== Container Logs ==="
          docker logs test-container --tail 20

          # Cleanup
          docker stop test-container
          docker rm test-container

          echo "✅ Docker image test completed!"

      - name: Comment on PR
        if: github.event_name == 'pull_request'
        uses: actions/github-script@v8
        with:
          script: |
            const output = `## 🐳 Docker Image Built Successfully!

            **Image:** \`${{ steps.deployment.outputs.DEPLOY_URL }}\`

            ### 🚀 Quick Test
            \`\`\`bash
            # Pull and run the PR image
            docker pull ${{ steps.deployment.outputs.DEPLOY_URL }}
            docker run -p 8080:80 -p 3001:3001 ${{ steps.deployment.outputs.DEPLOY_URL }}

            # Access the game
            open http://localhost:8080
            \`\`\`

            ### 📋 Features Tested
            - ✅ Game client loads on port 80
            - ✅ Multiplayer server starts on port 3001
            - ✅ Health checks pass
            - ✅ Multi-platform build (amd64, arm64)

            ### 🔗 Container Details
            - **Registry:** GitHub Container Registry (ghcr.io)
            - **Platforms:** linux/amd64, linux/arm64
            - **Size:** Optimized multi-stage build
            - **Security:** Runs as non-root user

            ### 🌐 Deploy to Render
            You can deploy this specific image to Render by updating the image reference in your service settings.`;

            github.rest.issues.createComment({
              issue_number: context.issue.number,
              owner: context.repo.owner,
              repo: context.repo.repo,
              body: output
            });

      - name: Generate summary
        run: |
          echo "## 🐳 Docker Build Summary" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY
          echo "**Image:** \`${{ steps.deployment.outputs.DEPLOY_URL }}\`" >> $GITHUB_STEP_SUMMARY
          echo "**Tag:** \`${{ steps.deployment.outputs.DEPLOY_TAG }}\`" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY
          echo "### 📦 Available Images" >> $GITHUB_STEP_SUMMARY
          echo "\`\`\`" >> $GITHUB_STEP_SUMMARY
          echo "${{ steps.meta.outputs.tags }}" >> $GITHUB_STEP_SUMMARY
          echo "\`\`\`" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY
          echo "### 🚀 Usage" >> $GITHUB_STEP_SUMMARY
          echo "\`\`\`bash" >> $GITHUB_STEP_SUMMARY
          echo "docker pull ${{ steps.deployment.outputs.DEPLOY_URL }}" >> $GITHUB_STEP_SUMMARY
          echo "docker run -p 8080:80 -p 3001:3001 ${{ steps.deployment.outputs.DEPLOY_URL }}" >> $GITHUB_STEP_SUMMARY
          echo "\`\`\`" >> $GITHUB_STEP_SUMMARY

  security-scan:
    runs-on: ubuntu-latest
    needs: build-and-push
    if: github.event_name != 'pull_request' # Skip security scan for PRs to reduce build time
    permissions:
      contents: read
      security-events: write

    steps:
      - name: Run Trivy vulnerability scanner
        uses: aquasecurity/trivy-action@master
        with:
          image-ref: ${{ needs.build-and-push.outputs.image-url }}
          format: 'sarif'
          output: 'trivy-results.sarif'

      - name: Upload Trivy scan results to GitHub Security tab
        uses: github/codeql-action/upload-sarif@v4
        if: always()
        with:
          sarif_file: 'trivy-results.sarif'