services:
  # MySQL Database
  mysql:
    image: mysql:8.0
    container_name: coupon-mysql
    environment:
      MYSQL_ROOT_PASSWORD: root
      MYSQL_DATABASE: coupon_db
      MYSQL_USER: coupon_user
      MYSQL_PASSWORD: coupon_pass
    ports:
      - "3306:3306"
    volumes:
      - mysql_data:/var/lib/mysql
      - ./mysql-init:/docker-entrypoint-initdb.d
    networks:
      - coupon-network
    healthcheck:
      test: ["CMD", "mysqladmin", "ping", "-h", "localhost"]
      timeout: 20s
      retries: 10

  # Redis Cache & Distributed Lock
  redis:
    image: redis:7-alpine
    container_name: coupon-redis
    ports:
      - "6379:6379"
    volumes:
      - redis_data:/data
    networks:
      - coupon-network
    healthcheck:
      test: ["CMD", "redis-cli", "ping"]
      timeout: 10s
      retries: 5

  # Coupon Service Instance 1
  coupon-app-1:
    build:
      context: ./coupon-service
      dockerfile: Dockerfile
    container_name: coupon-app-1
    environment:
      SPRING_APPLICATION_NAME: coupon-app-1
      SPRING_DATASOURCE_URL: jdbc:mysql://mysql:3306/coupon_db
      SPRING_DATASOURCE_USERNAME: coupon_user
      SPRING_DATASOURCE_PASSWORD: coupon_pass
      SPRING_DATA_REDIS_HOST: redis
      SPRING_DATA_REDIS_PORT: 6379
      COUPON_LOCK_ENABLED: "false"
      SERVER_PORT: 8080
    ports:
      - "8081:8080"
    depends_on:
      mysql:
        condition: service_healthy
      redis:
        condition: service_healthy
    networks:
      - coupon-network
    healthcheck:
      test: ["CMD", "curl", "-f", "http://localhost:8080/actuator/health"]
      timeout: 10s
      retries: 5

  # Coupon Service Instance 2
  coupon-app-2:
    build:
      context: ./coupon-service
      dockerfile: Dockerfile
    container_name: coupon-app-2
    environment:
      SPRING_APPLICATION_NAME: coupon-app-2
      SPRING_DATASOURCE_URL: jdbc:mysql://mysql:3306/coupon_db
      SPRING_DATASOURCE_USERNAME: coupon_user
      SPRING_DATASOURCE_PASSWORD: coupon_pass
      SPRING_DATA_REDIS_HOST: redis
      SPRING_DATA_REDIS_PORT: 6379
      COUPON_LOCK_ENABLED: "false"
      SERVER_PORT: 8080
    ports:
      - "8082:8080"
    depends_on:
      mysql:
        condition: service_healthy
      redis:
        condition: service_healthy
    networks:
      - coupon-network
    healthcheck:
      test: ["CMD", "curl", "-f", "http://localhost:8080/actuator/health"]
      timeout: 10s
      retries: 5

  # Coupon Service Instance 3
  coupon-app-3:
    build:
      context: ./coupon-service
      dockerfile: Dockerfile
    container_name: coupon-app-3
    environment:
      SPRING_APPLICATION_NAME: coupon-app-3
      SPRING_DATASOURCE_URL: jdbc:mysql://mysql:3306/coupon_db
      SPRING_DATASOURCE_USERNAME: coupon_user
      SPRING_DATASOURCE_PASSWORD: coupon_pass
      SPRING_DATA_REDIS_HOST: redis
      SPRING_DATA_REDIS_PORT: 6379
      COUPON_LOCK_ENABLED: "false"
      SERVER_PORT: 8080
    ports:
      - "8083:8080"
    depends_on:
      mysql:
        condition: service_healthy
      redis:
        condition: service_healthy
    networks:
      - coupon-network
    healthcheck:
      test: ["CMD", "curl", "-f", "http://localhost:8080/actuator/health"]
      timeout: 10s
      retries: 5

  # Nginx Load Balancer
  nginx:
    build:
      context: ./nginx
      dockerfile: Dockerfile
    container_name: coupon-nginx
    ports:
      - "80:80"
    depends_on:
      - coupon-app-1
      - coupon-app-2
      - coupon-app-3
    networks:
      - coupon-network

volumes:
  mysql_data:
  redis_data:

networks:
  coupon-network:
    driver: bridge