cicd.yml

name: CI/CD

on:
  workflow_dispatch:
    inputs:
      branch:
        description: 'Branch to deploy'
        required: true
        default: 'main'
      environment:
        description: 'Environment to deploy (dev or prod)'
        required: true
        default: 'dev'

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout source
        uses: actions/checkout@v3
        with:
          ref: ${{ github.event.inputs.branch }}

      - name: Setup Java
        uses: actions/setup-java@v3
        with:
          distribution: 'temurin'
          java-version: '21'

      - name: Grant execute permission for gradlew
        run: chmod +x ./gradlew

      - name: Generate application.yml
        run: |
          mkdir -p ./src/main/resources
          echo "${{ secrets.CD_APPLICATION }}" > ./src/main/resources/application.yml

      - name: Generate application-aws.yml
        run: echo "${{ secrets.CD_APPLICATION_AWS }}" > ./src/main/resources/application-aws.yml

      - name: Generate application-naver.yml
        run: echo "${{ secrets.CD_APPLICATION_NAVER }}" > ./src/main/resources/application-naver.yml

      - name: Generate application-oath.yml
        run: echo "${{ secrets.CD_APPLICATION_OATH }}" > ./src/main/resources/application-oath.yml

      - name: Build Project
        run: ./gradlew clean build -x test

      - name: Login to Docker Hub
        run: docker login -u ${{ secrets.DOCKER_USERNAME }} -p ${{ secrets.DOCKER_PASSWORD }}

      - name: Build Docker Image
        run: docker build -t yh0872/spoony-dev:latest .

      - name: Publish Image to Docker Hub
        run: docker push yh0872/spoony-dev:latest

  deploy:
    needs: build
    runs-on: ubuntu-latest
    steps:
      - name: Install SSH Client
        run: sudo apt-get update && sudo apt-get install -y openssh-client

      - name: Create SSH Key File
        run: |
          if [ "${{ github.event.inputs.environment }}" == "dev" ]; then
            echo "${{ secrets.DEV_EC2_SSH_KEY }}" > ssh_key.pem
            echo "${{ secrets.DEV_EC2_PUBLIC_IP }}" > ec2_public_ip.txt
          else
            echo "${{ secrets.PROD_EC2_SSH_KEY }}" > ssh_key.pem
            echo "${{ secrets.PROD_EC2_PUBLIC_IP }}" > ec2_public_ip.txt
          fi
          chmod 600 ssh_key.pem

      - name: SSH into EC2 and Deploy
        run: |
          EC2_PUBLIC_IP=$(cat ec2_public_ip.txt)

          ssh -o StrictHostKeyChecking=no -i ssh_key.pem ubuntu@$EC2_PUBLIC_IP << EOF
          #!/bin/bash

          echo "🔍 현재 실행 중인 포트 확인"
          ACTIVE_PORT=\$(sudo docker ps --format "{{.Ports}}" | grep -oE '0.0.0.0:808[12]' | cut -d':' -f2 | cut -d'-' -f1)

          if [[ -z "\$ACTIVE_PORT" ]]; then
            echo "⚠️ 현재 실행 중인 포트를 찾을 수 없습니다. 기본값(8081)으로 설정합니다."
            ACTIVE_PORT="8081"
          fi

          if [[ "\$ACTIVE_PORT" == "8081" ]]; then
            NEW_PORT="8082"
          else
            NEW_PORT="8081"
          fi
          echo "🔄 새로운 컨테이너를 \$NEW_PORT 포트에서 실행"

          echo "🚀 최신 이미지 가져오기"
          sudo docker pull yh0872/spoony-dev:latest

          echo "🔧 새로운 컨테이너 실행 (포트 \$NEW_PORT)"
          sudo docker run -d -p \$NEW_PORT:8080 --name spoony-dev-\$NEW_PORT yh0872/spoony-dev

          echo "⌛️ 새로운 컨테이너가 정상적으로 실행될 때까지 대기..."
          for i in {1..30}; do
            if curl -s http://localhost:\$NEW_PORT/api/v1/deploy/status | grep -q "blue\|green"; then
              echo "✅ 새로운 컨테이너가 정상적으로 실행되었습니다."
              break
            fi
            echo "⏳ 컨테이너 준비 중... ($i/30)"
            sleep 2
          done

          echo "🔁 Nginx가 새로운 컨테이너로 트래픽을 정상적으로 넘기는지 확인..."
          for i in {1..30}; do
            if curl -s http://localhost/api/v1/deploy/status | grep -q "blue\|green"; then
              echo "✅ Nginx가 새로운 컨테이너로 정상적으로 트래픽을 전달 중!"
              break
            fi
            echo "⏳ Nginx 업데이트 대기... ($i/30)"
            sleep 2
          done

          echo "🔁 Nginx 설정 적용 (무중단)"
          sudo nginx -t && sudo nginx -s reload

          echo "🗑️ 이전 컨테이너 제거"
          sudo docker stop spoony-dev-\$ACTIVE_PORT
          sudo docker rm spoony-dev-\$ACTIVE_PORT

          echo "✅ 배포 완료. 현재 활성 컨테이너: spoony-dev-\$NEW_PORT"
          EOF