services:
  db:
    image: postgres:16-alpine
    container_name: 004erpdb
    environment:
      POSTGRES_DB: ${POSTGRES_DB}
      POSTGRES_USER: ${POSTGRES_USER}
      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD}
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U ${POSTGRES_USER} -d ${POSTGRES_DB}"]
      interval: 5s
      timeout: 5s
      retries: 5
    volumes: [postgres_data:/var/lib/postgresql/data]

  redis:
    image: redis:7-alpine
    container_name: 004erpredis
    volumes: [redis_data:/data]
    # Lean optimizacija: Ograničavamo maksimalnu potrošnju memorije samog Redisa na 100MB 
    # i aktiviramo LRU algoritam koji automatski briše najstarije ključeve ako se limit prijeđe.
    command: redis-server --appendonly yes --maxmemory 100mb --maxmemory-policy allkeys-lru

  media-permissions:
    image: alpine:3.22
    container_name: 004erpmediafix
    command: >
      sh -c "mkdir -p /app/media/fleet/generated_archives /app/media/fleet/generated_pdfs
      && chown -R 1001:1001 /app/media
      && chmod -R u+rwX,g+rwX /app/media"
    volumes:
      - media_volume:/app/media
    restart: "no"

  worker:
    container_name: 004erpworker
    build:
      context: ./backend
      dockerfile: Dockerfile
    command: celery -A core worker --loglevel=info
    user: "1001:1001"
    volumes:
      - ./backend:/app
      - media_volume:/app/media
    env_file:
      - .env
    depends_on:
      db: { condition: service_healthy }
      redis: { condition: service_started }
      media-permissions: { condition: service_completed_successfully }
    deploy:
      resources:
        limits:
          memory: 512M

volumes:
  postgres_data:
  redis_data:
  media_volume: # Ovo je ključno za tvoj ERP