cd-dev.yml

name: CD - Deploy to EC2

on:
  push:
    branches: [develop]
  workflow_dispatch:  # 수동 실행 가능

env:
  REGISTRY: ghcr.io
  IMAGE_PREFIX: ghcr.io/${{ github.repository_owner }}

jobs:
  # ==========================================
  # Build & Push Docker Images
  # ==========================================
  build-and-push:
    name: Build and Push Images
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write  # GHCR 푸시 권한
    
    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: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Convert repository name to lowercase
        id: repo
        run: echo "repo_lower=$(echo ${{ github.repository }} | tr '[:upper:]' '[:lower:]')" >> $GITHUB_OUTPUT

      - name: Build and push Backend image
        uses: docker/build-push-action@v5
        with:
          context: .
          file: ./Dockerfile
          target: production
          push: true
          tags: |
            ghcr.io/${{ steps.repo.outputs.repo_lower }}/backend:latest
            ghcr.io/${{ steps.repo.outputs.repo_lower }}/backend:${{ github.sha }}
          cache-from: type=registry,ref=ghcr.io/${{ steps.repo.outputs.repo_lower }}/backend:latest
          cache-to: type=inline

      - name: Build and push FastAPI image
        uses: docker/build-push-action@v5
        with:
          context: ./fastapi-server
          file: ./fastapi-server/Dockerfile
          push: true
          tags: |
            ghcr.io/${{ steps.repo.outputs.repo_lower }}/fastapi:latest
            ghcr.io/${{ steps.repo.outputs.repo_lower }}/fastapi:${{ github.sha }}
          cache-from: type=registry,ref=ghcr.io/${{ steps.repo.outputs.repo_lower }}/fastapi:latest
          cache-to: type=inline

  # ==========================================
  # Deploy to EC2 Server
  # ==========================================
  deploy:
    name: Deploy to EC2
    runs-on: ubuntu-latest
    needs: build-and-push
    
    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Convert repository name to lowercase
        id: repo
        run: echo "repo_lower=$(echo ${{ github.repository }} | tr '[:upper:]' '[:lower:]')" >> $GITHUB_OUTPUT

      - name: Deploy to EC2 via SSH
        uses: appleboy/ssh-action@v1.0.3
        with:
          host: ${{ secrets.EC2_HOST }}
          username: ubuntu
          key: ${{ secrets.EC2_SSH_KEY }}
          port: 22
          script: |
            # 프로젝트 디렉토리로 이동
            cd /home/ubuntu/moduwa-server || exit 1
            
            # 최신 코드 pull
            git fetch origin
            git checkout develop
            git pull origin develop
            
            # GHCR 로그인 (GitHub Token 사용)
            echo "${{ secrets.GITHUB_TOKEN }}" | docker login ghcr.io -u ${{ github.actor }} --password-stdin
            
            # 최신 이미지 pull
            docker pull ghcr.io/${{ steps.repo.outputs.repo_lower }}/backend:latest
            docker pull ghcr.io/${{ steps.repo.outputs.repo_lower }}/fastapi:latest
            
            # docker-compose.yml에서 이미지 이름 업데이트
            export BACKEND_IMAGE=ghcr.io/${{ steps.repo.outputs.repo_lower }}/backend:latest
            export FASTAPI_IMAGE=ghcr.io/${{ steps.repo.outputs.repo_lower }}/fastapi:latest
            
            # 기존 컨테이너 중지 및 제거
            docker-compose down
            
            # 컨테이너 시작
            docker-compose up -d
            
            # 컨테이너 시작 대기
            echo "컨테이너 시작 대기 중..."
            sleep 15
            
            # 컨테이너 상태 확인
            echo "컨테이너 상태:"
            docker-compose ps
            
            # docker-compose.yml에 정의된 서비스 개수 확인
            EXPECTED_COUNT=$(docker-compose config --services | wc -l)
            RUNNING_COUNT=$(docker-compose ps | grep "Up" | wc -l)
            
            echo "예상 컨테이너 개수: $EXPECTED_COUNT"
            echo "실행 중인 컨테이너 개수: $RUNNING_COUNT"
            
            if [ "$RUNNING_COUNT" -lt "$EXPECTED_COUNT" ]; then
              echo "에러: 일부 컨테이너가 실행되지 않았습니다."
              echo "컨테이너 로그:"
              docker-compose logs --tail=50
              exit 1
            fi
            
            # Prisma 마이그레이션 실행
            echo "Prisma 마이그레이션 실행 중..."
            docker-compose exec -T backend npx prisma migrate deploy || {
              echo "Prisma 마이그레이션 실패"
              echo "Backend 로그:"
              docker-compose logs --tail=50 backend
              exit 1
            }
            
            echo "Prisma 마이그레이션 완료"
            
            # 최종 헬스체크
            echo "헬스체크 진행 중..."
            sleep 5
            
            # Backend 헬스체크 (포트 3000)
            if ! curl -f http://localhost:3000/ > /dev/null 2>&1; then
              echo "Backend 헬스체크 실패 (포트 3000이 응답하지 않음)"
            else
              echo "Backend 정상 작동"
            fi
            
            # FastAPI 헬스체크 (포트 8000)
            if ! curl -f http://localhost:8000/health > /dev/null 2>&1; then
              echo "FastAPI 헬스체크 실패 (포트 8000이 응답하지 않음)"
            else
              echo "FastAPI 정상 작동"
            fi
            
            echo "배포 완료: develop-${{ github.sha }}"
            
            # 구버전 이미지 정리
            docker image prune -af --filter "until=24h"

      - name: Deployment Status
        if: always()
        run: |
          if [ "${{ job.status }}" == "success" ]; then
            echo "배포 성공 - 최신 이미지로 업데이트되었습니다"
          else
            echo "배포 실패 - 로그를 확인하세요"
            exit 1
          fi