backend.yml

name: backend CI/CD

on:
  pull_request:
    branches: [main]
    paths:
      - "front/src/**"
      - "backend/src/**"

jobs:
  path_changes:
    runs-on: ubuntu-latest
    outputs:
      front: ${{ steps.filter.outputs.front }}
      backend: ${{ steps.filter.outputs.backend }}
    steps:
      - uses: actions/checkout@v4
      - uses: dorny/paths-filter@v3
        id: filter
        with:
          filters: |
            front:
              - 'front/src/**'
            backend:
              - 'backend/src/**'

  build_and_push_backend:
    needs: path_changes
    if: needs.path_changes.outputs.backend == 'true'
    runs-on: ubuntu-latest
    steps:
      - name: Checkout Repository
        uses: actions/checkout@v4

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

      - name: Login to Docker Hub
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKER_HUB_USERNAME }}
          password: ${{ secrets.DOCKER_HUB_TOKEN_BACKEND }}

      - name: Set up Docker Meta for Backend
        id: docker_meta_backend
        uses: docker/metadata-action@v5
        with:
          images: ${{ secrets.BACKEND_DOCKER_IMAGE }}
          tags: |
            type=semver,pattern={{version}}
            type=semver,pattern={{major}}.{{minor}}
            type=ref,event=branch
            type=ref,event=pr
            type=sha
          flavor: |
            latest=true

      - name: Build and Push Frontend Docker Image
        uses: docker/build-push-action@v5
        with:
          context: ./backend
          file: ./backend/Dockerfile
          platforms: linux/amd64
          push: true
          tags: ${{ steps.docker_meta_backend.outputs.tags }}
          labels: ${{ steps.docker_meta_backend.outputs.labels }}
          no-cache: true
          build-args: |
            DEV_FRONT_URL=${{ secrets.DEV_FRONT_URL }}
            PROD_FRONT_URL=${{ secrets.PROD_FRONT_URL }}
            GMAIL_USER=${{ secrets.GMAIL_USER}}
            MAIL_APP_PASSWORD=${{ secrets.MAIL_APP_PASSWORD }}
            JWT_SIGNATURE=${{ secrets.JWT_SIGNATURE }}
            DEV_MYSQL_PASSWORD=${{ secrets.DEV_MYSQL_PASSWORD }}
            DEV_MYSQL_DATABASE=${{ secrets.DEV_MYSQL_DATABASE }}
            PROD_MYSQL_USERNAME=${{ secrets.PROD_MYSQL_USERNAME }}
            PROD_MYSQL_PASSWORD=${{ secrets.PROD_MYSQL_PASSWORD }}
            PROD_MYSQL_DATABASE=${{ secrets.PROD_MYSQL_DATABASE }}
            PROD_MYSQL_HOST=${{ secrets.PROD_MYSQL_HOST }}
            BACK_END_NODE_ENV=${{ secrets.BACK_END_NODE_ENV }}

      - name: EC2 Backend Docker Run
        uses: appleboy/ssh-action@master
        with:
          host: ${{ secrets.BACKEND_EC2_HOST }}
          username: ec2-user
          key: ${{ secrets.BACKEND_EC2_PEM_KEY }}
          script: |
            docker stop ${{ secrets.BACKEND_DOCKER_CONTAINER }} || true
            docker rm ${{ secrets.BACKEND_DOCKER_CONTAINER }} || true
            docker pull ${{ secrets.BACKEND_DOCKER_IMAGE }}:latest
            docker run --name ${{ secrets.BACKEND_DOCKER_CONTAINER }} --rm -d -p 8080:80 ${{ secrets.BACKEND_DOCKER_IMAGE }}:latest