# =============================================================================
# Docker Compose - Electricity Trading Microservices
# =============================================================================
# Services:
#   - gateway:       WebSocket/REST API, Auth, Price generation (port 8080)
#   - order-service: Order processing and persistence (port 8081)
#   - mock-m7:       Trading engine simulation (port 8082)
#   - rabbitmq:      Message broker (ports 5672, 15672)
#   - postgres:      Database (port 5432)
#
# Quick start (run from project root):
#   docker-compose -f docker/docker-compose.yml up -d
#   docker-compose -f docker/docker-compose.yml logs -f gateway
#   docker-compose -f docker/docker-compose.yml down
# =============================================================================

services:
  # ---------------------------------------------------------------------------
  # PostgreSQL Database
  # ---------------------------------------------------------------------------
  # Stores users (Gateway) and orders (Order Service)
  postgres:
    image: postgres:16-alpine
    container_name: trading-postgres
    environment:
      POSTGRES_DB: trading
      POSTGRES_USER: trading
      POSTGRES_PASSWORD: trading
    ports:
      - "5432:5432"
    volumes:
      - postgres_data:/var/lib/postgresql/data
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U trading -d trading"]
      interval: 10s
      timeout: 5s
      retries: 5
    networks:
      - trading-network

  # ---------------------------------------------------------------------------
  # RabbitMQ Message Broker
  # ---------------------------------------------------------------------------
  # Routes messages between services
  # Management UI: http://localhost:15672 (guest/guest)
  rabbitmq:
    image: rabbitmq:3-management-alpine
    container_name: trading-rabbitmq
    environment:
      RABBITMQ_DEFAULT_USER: guest
      RABBITMQ_DEFAULT_PASS: guest
    ports:
      - "5672:5672"    # AMQP
      - "15672:15672"  # Management UI
    volumes:
      - rabbitmq_data:/var/lib/rabbitmq
    healthcheck:
      test: ["CMD", "rabbitmq-diagnostics", "check_running"]
      interval: 10s
      timeout: 5s
      retries: 5
    networks:
      - trading-network

  # ---------------------------------------------------------------------------
  # Gateway Service
  # ---------------------------------------------------------------------------
  # Entry point: WebSocket, REST API, Auth, Price generation
  # Publishes orders to Order Service, receives status updates
  gateway:
    build:
      context: ..
      dockerfile: gateway-service/Dockerfile
    container_name: trading-gateway
    environment:
      SPRING_PROFILES_ACTIVE: docker
      SPRING_DATASOURCE_URL: jdbc:postgresql://postgres:5432/trading
      SPRING_DATASOURCE_USERNAME: trading
      SPRING_DATASOURCE_PASSWORD: trading
      SPRING_RABBITMQ_HOST: rabbitmq
    ports:
      - "8080:8080"
    depends_on:
      postgres:
        condition: service_healthy
      rabbitmq:
        condition: service_healthy
    healthcheck:
      test: ["CMD", "curl", "-f", "http://localhost:8080/actuator/health"]
      interval: 30s
      timeout: 10s
      retries: 3
      start_period: 40s
    networks:
      - trading-network
    restart: on-failure

  # ---------------------------------------------------------------------------
  # Order Service
  # ---------------------------------------------------------------------------
  # Processes orders, persists to database, communicates with Mock M7
  order-service:
    build:
      context: ..
      dockerfile: order-service/Dockerfile
    container_name: trading-order-service
    environment:
      SPRING_PROFILES_ACTIVE: docker
      SPRING_DATASOURCE_URL: jdbc:postgresql://postgres:5432/trading
      SPRING_DATASOURCE_USERNAME: trading
      SPRING_DATASOURCE_PASSWORD: trading
      SPRING_RABBITMQ_HOST: rabbitmq
    ports:
      - "8081:8081"
    depends_on:
      postgres:
        condition: service_healthy
      rabbitmq:
        condition: service_healthy
    healthcheck:
      test: ["CMD", "curl", "-f", "http://localhost:8081/actuator/health"]
      interval: 30s
      timeout: 10s
      retries: 3
      start_period: 40s
    networks:
      - trading-network
    restart: on-failure

  # ---------------------------------------------------------------------------
  # Mock M7 Service
  # ---------------------------------------------------------------------------
  # Simulates EPEX SPOT trading engine
  # Receives orders, sends ACK immediately, FILL/REJECT after delay
  mock-m7:
    build:
      context: ..
      dockerfile: mock-m7-service/Dockerfile
    container_name: trading-mock-m7
    environment:
      SPRING_PROFILES_ACTIVE: docker
      SPRING_RABBITMQ_HOST: rabbitmq
    ports:
      - "8082:8082"
    depends_on:
      rabbitmq:
        condition: service_healthy
    healthcheck:
      test: ["CMD", "curl", "-f", "http://localhost:8082/actuator/health"]
      interval: 30s
      timeout: 10s
      retries: 3
      start_period: 40s
    networks:
      - trading-network
    restart: on-failure

networks:
  trading-network:
    driver: bridge

volumes:
  postgres_data:
  rabbitmq_data: