name: MCP Server CI/CD

on:
  push:
    branches:
      - main
      - develop
    paths:
      - 'services/mcp-server/**'
      - '.github/workflows/mcp-server-deploy.yml'
  pull_request:
    branches:
      - main
      - develop
    paths:
      - 'services/mcp-server/**'
  workflow_dispatch:
    inputs:
      environment:
        description: 'Deployment environment'
        required: true
        default: 'staging'
        type: choice
        options:
          - staging
          - production

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: ${{ github.repository }}/mcp-server
  AZURE_REGISTRY: taiji.azurecr.io
  AZURE_IMAGE_NAME: taiji-mcp-server

jobs:
  build-and-push:
    name: Build and Push Docker Image
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write
      id-token: write

    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3

      - name: Log in to GitHub Container Registry
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Log in to Azure Container Registry
        if: github.event_name == 'push' && github.ref == 'refs/heads/main'
        uses: docker/login-action@v3
        with:
          registry: ${{ env.AZURE_REGISTRY }}
          username: ${{ secrets.AZURE_CLIENT_ID }}
          password: ${{ secrets.AZURE_CLIENT_SECRET }}

      - name: Extract metadata
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: |
            ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
            ${{ env.AZURE_REGISTRY }}/${{ env.AZURE_IMAGE_NAME }}
          tags: |
            type=ref,event=branch
            type=ref,event=pr
            type=semver,pattern={{version}}
            type=semver,pattern={{major}}.{{minor}}
            type=sha,prefix={{branch}}-
            type=raw,value=latest,enable={{is_default_branch}}

      - name: Build and push Docker image
        uses: docker/build-push-action@v5
        with:
          context: ./services/mcp-server
          file: ./services/mcp-server/Dockerfile
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: type=gha
          cache-to: type=gha,mode=max
          platforms: linux/amd64,linux/arm64

      - name: Generate build summary
        run: |
          echo "### 🚀 Build Summary" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY
          echo "**Image:** \`${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}\`" >> $GITHUB_STEP_SUMMARY
          echo "**Tags:**" >> $GITHUB_STEP_SUMMARY
          echo "\`\`\`" >> $GITHUB_STEP_SUMMARY
          echo "${{ steps.meta.outputs.tags }}" >> $GITHUB_STEP_SUMMARY
          echo "\`\`\`" >> $GITHUB_STEP_SUMMARY

  deploy-staging:
    name: Deploy to Staging
    needs: build-and-push
    if: github.event_name == 'push' && github.ref == 'refs/heads/develop'
    runs-on: ubuntu-latest
    environment:
      name: staging
      url: https://staging-mcp.taiji-ai.com

    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Set up kubectl
        uses: azure/setup-kubectl@v3
        with:
          version: 'v1.28.0'

      - name: Configure kubectl
        run: |
          mkdir -p $HOME/.kube
          echo "${{ secrets.KUBE_CONFIG_STAGING }}" | base64 -d > $HOME/.kube/config

      - name: Update deployment image
        run: |
          kubectl set image deployment/mcp-server \
            mcp-server=${{ env.AZURE_REGISTRY }}/${{ env.AZURE_IMAGE_NAME }}:develop \
            -n taiji-ai

      - name: Wait for rollout
        run: |
          kubectl rollout status deployment/mcp-server -n taiji-ai --timeout=5m

      - name: Verify deployment
        run: |
          kubectl get pods -n taiji-ai -l app=mcp-server
          kubectl get svc -n taiji-ai -l app=mcp-server

  deploy-production:
    name: Deploy to Production
    needs: build-and-push
    if: github.event_name == 'push' && github.ref == 'refs/heads/main'
    runs-on: ubuntu-latest
    environment:
      name: production
      url: https://mcp.taiji-ai.com

    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Set up kubectl
        uses: azure/setup-kubectl@v3
        with:
          version: 'v1.28.0'

      - name: Configure kubectl
        run: |
          mkdir -p $HOME/.kube
          echo "${{ secrets.KUBE_CONFIG_PRODUCTION }}" | base64 -d > $HOME/.kube/config

      - name: Update deployment image
        run: |
          kubectl set image deployment/mcp-server \
            mcp-server=${{ env.AZURE_REGISTRY }}/${{ env.AZURE_IMAGE_NAME }}:latest \
            -n taiji-ai

      - name: Wait for rollout
        run: |
          kubectl rollout status deployment/mcp-server -n taiji-ai --timeout=5m

      - name: Verify deployment
        run: |
          kubectl get pods -n taiji-ai -l app=mcp-server
          kubectl get svc -n taiji-ai -l app=mcp-server

      - name: Send deployment notification
        if: always()
        uses: 8398a7/action-slack@v3
        with:
          status: ${{ job.status }}
          text: 'MCP Server deployment to production: ${{ job.status }}'
          webhook_url: ${{ secrets.SLACK_WEBHOOK }}
        env:
          SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK }}

  health-check:
    name: Post-Deployment Health Check
    needs: [deploy-staging, deploy-production]
    if: always() && (needs.deploy-staging.result == 'success' || needs.deploy-production.result == 'success')
    runs-on: ubuntu-latest

    steps:
      - name: Determine environment
        id: env
        run: |
          if [[ "${{ github.ref }}" == "refs/heads/main" ]]; then
            echo "url=https://mcp.taiji-ai.com" >> $GITHUB_OUTPUT
            echo "env=production" >> $GITHUB_OUTPUT
          else
            echo "url=https://staging-mcp.taiji-ai.com" >> $GITHUB_OUTPUT
            echo "env=staging" >> $GITHUB_OUTPUT
          fi

      - name: Health check
        run: |
          echo "Checking health endpoint: ${{ steps.env.outputs.url }}/health"
          for i in {1..10}; do
            if curl -f -s "${{ steps.env.outputs.url }}/health" > /dev/null; then
              echo "✅ Health check passed!"
              exit 0
            fi
            echo "Attempt $i failed, waiting 10s..."
            sleep 10
          done
          echo "❌ Health check failed after 10 attempts"
          exit 1

      - name: API smoke test
        run: |
          echo "Running API smoke tests..."
          # Test agents endpoint
          curl -f -s "${{ steps.env.outputs.url }}/api/v1/agents" || exit 1
          # Test health endpoint
          curl -f -s "${{ steps.env.outputs.url }}/health" || exit 1
          echo "✅ Smoke tests passed!"