cd.yml

name: CD Backend

on:
  push:
    branches: [ "main", "dev" ]

permissions:
  contents: read

jobs:
  build-and-push-image:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout code
        uses: actions/checkout@v3

      # 자바 버전 설정
      - name: Set up JDK 17
        uses: actions/setup-java@v3
        with:
          java-version: '17'
          distribution: 'temurin'

      # main 경로 application.yml 파일 생성
      - name: Generate application.yml
        run: |
          mkdir -p ./src/main/resources
          echo "${{ secrets.MAIN_APPLICATION_YML }}" | base64 -d > ./src/main/resources/application.yml

      # gradle 권한 부여
      - name: Grant execute permission for gradlew
        run: chmod +x ./gradlew
        shell: bash

      # 빌드 시 캐시 적용
      - name: Gradle Caching
        uses: actions/cache@v3
        with:
          path: |
            ~/.gradle/caches
            ~/.gradle/wrapper
          key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties') }}
          restore-keys: |
            ${{ runner.os }}-gradle-

      # 빌드
      - name: Build with Gradle
        run: ./gradlew build -x test

      # 도커 허브 로그인
      - name: Docker Hub Login
        uses: docker/login-action@v2
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}

      # 도커 이미지 빌드 및 푸시
      - name: docker image build and push
        run: |
          docker build -f Dockerfile -t ${{ secrets.DOCKERHUB_USERNAME }}/${{ secrets.DOCKERHUB_APP_NAME }} .
          docker push ${{ secrets.DOCKERHUB_USERNAME }}/${{ secrets.DOCKERHUB_APP_NAME }}

  deploy:
    needs: build-and-push-image
    runs-on: ubuntu-latest
    steps:
      # 서버 백그라운드 실행
      - name: pull image and run container
        uses: appleboy/ssh-action@master
        with:
          host: ${{ secrets.EC2_HOST }}
          username: ${{ secrets.EC2_USERNAME }}
          key: ${{ secrets.EC2_KEY }}
          port: ${{ secrets.EC2_PORT }}
          script: |
            cd compose
            docker rm -f $(docker ps -qa)
            docker pull ${{ secrets.DOCKERHUB_USERNAME }}/${{ secrets.DOCKERHUB_APP_NAME }} 
            docker-compose up -d
            docker system prune -f