docker-compose.dev.yml

services:
  backend:
    build:
      context: .
      dockerfile: dev.Dockerfile
    ports:
      - "${PORT}:${PORT}"   # Expose the port defined in the .env file
      - "9229:9229"      # Node.js debugger
    volumes:
      - ./:/usr/src/app   # Mount the current directory into the container
      - /usr/src/app/node_modules   # Prevents overwriting node_modules
    networks:
      - backend-tier
    environment:
      - NODE_ENV=development
      - NEO4J_URI=bolt://neo4j:7687   # Neo4j URI
      - NEO4J_USER=neo4j             # Neo4j username
      - NEO4J_PASSWORD=password         # Neo4j password
      - PORT=${PORT}               # Port for the backend server
    depends_on:
      neo4j:
        condition: service_healthy

  neo4j:
    image: neo4j:5-community       # Neo4j version
    container_name: neo4j
    ports:
      - "7474:7474"   # Neo4j web interface (browser)
      - "7687:7687"   # Neo4j Bolt protocol (database communication)
    environment:
      - NEO4J_AUTH=neo4j/password       # Default credentials (username/password)
    healthcheck:
      test: ["CMD", "cypher-shell", "-u", "neo4j", "-p", "password", "--non-interactive", "RETURN 1;"]
      interval: 30s
      timeout: 10s
      retries: 5
      start_period: 20s
    volumes:
      - neo4j_data:/data   # Persist Neo4j data in a named volume
      - neo4j_logs:/logs   # Persist logs
    networks:
      - backend-tier

volumes:
  neo4j_data:   # Volume to persist Neo4j database data
  neo4j_logs:   # Volume to persist Neo4j logs

networks:
  backend-tier:
    driver: bridge