cd.yml

name: Backend Continuous Deployment

on:
  push:
    branches: ["develop"]

jobs:
  deploy:
    runs-on: ubuntu-24.04

    steps:
      # 1. 브랜치 checkout
      - name: Checkout code
        uses: actions/checkout@v3

      # 2. JDK 설정
      - name: Set up JDK 17
        uses: actions/setup-java@v3
        with:
          java-version: "17"
          distribution: "temurin"

      # 3. Docker 이미지 build 및 push
      - name: docker build and push
        run: |
          docker login -u ${{ secrets.DOCKER_USERNAME }} -p ${{ secrets.DOCKER_PASSWORD }}
          docker build -t ${{ secrets.DOCKER_USERNAME }}/gotcha:latest .
          docker push ${{ secrets.DOCKER_USERNAME }}/gotcha:latest

      # 4. backend 서비스 재시작
      - name: Deploy to server
        uses: appleboy/ssh-action@master
        with:
          host: ${{ secrets.SERVER_HOST }}
          port: ${{ secrets.SERVER_SSH_PORT }}
          username: ${{ secrets.SERVER_USERNAME }}
          key: ${{ secrets.SERVER_KEY }}
          script: |
            docker login -u ${{ secrets.DOCKER_USERNAME }} -p ${{ secrets.DOCKER_PASSWORD }}

            echo "==== BACKEND 컨테이너 중지 ===="
            docker-compose stop app || true

            echo "==== 오래된 BACKEND 이미지 삭제 ===="
            docker rmi ${{ secrets.DOCKER_USERNAME }}/gotcha:latest || true

            echo "==== 최신 BACKEND 이미지 pull ===="
            docker pull ${{ secrets.DOCKER_USERNAME }}/gotcha:latest

            echo "==== BACKEND만 재시작 ===="
            docker-compose up -d app

            echo "==== 백엔드 배포 완료! ===="