# ==============================================================================
# DOCKER COMPOSE TEMPLATE - BACKEND SERVICE
# ==============================================================================
# Template para servicios backend (Node.js, Python, etc.)
#
# USO:
#   1. Copiar a tu proyecto: cp template proyecto/docker/docker-compose.yml
#   2. Reemplazar placeholders:
#      - {{SERVICE_NAME}}  -> nombre del servicio (ej: gamilit-api)
#      - {{PORT}}          -> puerto interno (ej: 3000)
#      - {{DOMAIN}}        -> dominio Traefik (ej: api.gamilit.localhost)
#      - {{PROJECT}}       -> nombre del proyecto (ej: gamilit)
#   3. Ajustar segun necesidades
#
# REGLAS:
#   - Usar expose, NO ports
#   - Redes deben ser external: true
#   - Incluir labels de Traefik
#   - Incluir healthcheck
# ==============================================================================

version: "3.8"

# Anchors reutilizables
x-logging: &default-logging
  driver: "json-file"
  options:
    max-size: "10m"
    max-file: "3"

x-healthcheck: &default-healthcheck
  interval: 30s
  timeout: 5s
  retries: 3
  start_period: 10s

services:
  # ==========================================================================
  # BACKEND SERVICE
  # ==========================================================================
  {{SERVICE_NAME}}:
    build:
      context: ../apps/backend
      dockerfile: Dockerfile
      args:
        - NODE_ENV=${NODE_ENV:-development}
    container_name: {{SERVICE_NAME}}
    restart: unless-stopped

    # IMPORTANTE: usar expose, NO ports
    expose:
      - "{{PORT}}"

    # Variables de entorno
    environment:
      - NODE_ENV=${NODE_ENV:-development}
      - PORT={{PORT}}
      - DATABASE_URL=${DATABASE_URL}
      - REDIS_URL=${REDIS_URL:-redis://redis:6379}
      - JWT_SECRET=${JWT_SECRET}
      - JWT_EXPIRES_IN=${JWT_EXPIRES_IN:-1d}
      - LOG_LEVEL=${LOG_LEVEL:-info}

    # Health check
    healthcheck:
      test: ["CMD", "curl", "-f", "http://localhost:{{PORT}}/health"]
      <<: *default-healthcheck

    # Labels para Traefik
    labels:
      - "traefik.enable=true"
      # Router
      - "traefik.http.routers.{{SERVICE_NAME}}.rule=Host(`{{DOMAIN}}`)"
      - "traefik.http.routers.{{SERVICE_NAME}}.entrypoints=web"
      # Service
      - "traefik.http.services.{{SERVICE_NAME}}.loadbalancer.server.port={{PORT}}"
      # Middlewares (opcional)
      # - "traefik.http.routers.{{SERVICE_NAME}}.middlewares=api-chain@file"

    # Redes
    networks:
      - {{PROJECT}}_${ENV:-local}
      - infra_shared

    # Logging
    logging:
      <<: *default-logging

    # Volumenes para desarrollo (opcional)
    # volumes:
    #   - ../apps/backend/src:/app/src:ro

# ==============================================================================
# NETWORKS
# ==============================================================================
networks:
  {{PROJECT}}_${ENV:-local}:
    external: true
  infra_shared:
    external: true