version: "3.9"

# COMPOSE_PROFILES controls which services start:
# - dev  : laptop-friendly; mounts source, exposes localhost ports, enables reloaders
# - prod : VPS-friendly; no host ports for app containers, joins proxy network for Caddy

x-service-defaults: &service-defaults
  env_file: .env
  restart: ${DOCKER_RESTART_POLICY:-unless-stopped}
  networks:
    - app
  logging:
    driver: "json-file"
    options:
      max-size: "10m"
      max-file: "3"

x-backend-common: &backend-common
  <<: *service-defaults
  depends_on:
    postgres:
      condition: service_healthy

services:
  # --------------------------------------------------------------------------
  #   Next.js Frontend
  # --------------------------------------------------------------------------
  frontend:
    <<: *service-defaults
    profiles: [prod]
    container_name: frontend
    build:
      context: ./frontend
      dockerfile: Dockerfile
      target: runner
    environment:
      NODE_ENV: production
      NEXT_TELEMETRY_DISABLED: 1
      PORT: 3000
    expose:
      - "3000"
    depends_on:
      backend:
        condition: service_healthy
    healthcheck:
      test:
        [
          "CMD-SHELL",
          "node -e \"require('http').get('http://127.0.0.1:3000', (res) => { process.exit(res.statusCode < 500 ? 0 : 1); }).on('error', () => process.exit(1));\"",
        ]
      interval: 30s
      timeout: 5s
      retries: 5
      start_period: 10s
    networks:
      - app
      - proxy
    # Caddy from the infra stack reverse-proxies to this container on the proxy network.

  frontend-dev:
    <<: *service-defaults
    profiles: [dev]
    container_name: frontend-dev
    build:
      context: ./frontend
      dockerfile: Dockerfile
      target: dev
    command: ["npm", "run", "dev", "--", "--hostname", "0.0.0.0", "--port", "3000"]
    environment:
      NODE_ENV: development
      NEXT_TELEMETRY_DISABLED: 1
    ports:
      - "3000:3000" # Localhost access during development
    volumes:
      - ./frontend:/app
      - frontend-node_modules:/app/node_modules
    depends_on:
      backend-dev:
        condition: service_healthy
    networks:
      app:
        aliases:
          - frontend

  # --------------------------------------------------------------------------
  #   FastAPI Backend
  # --------------------------------------------------------------------------
  backend:
    <<: *backend-common
    profiles: [prod]
    container_name: backend
    build:
      context: ./backend
      dockerfile: Dockerfile
      target: production
    environment:
      ENVIRONMENT: production
    command:
      [
        "gunicorn",
        "app.main:app",
        "-k",
        "uvicorn.workers.UvicornWorker",
        "-w",
        "${GUNICORN_WORKERS:-4}",
        "--bind",
        "0.0.0.0:8000",
        "--access-logfile",
        "-",
        "--error-logfile",
        "-",
        "--timeout",
        "${GUNICORN_TIMEOUT:-120}",
      ]
    expose:
      - "8000"
    healthcheck:
      test:
        [
          "CMD-SHELL",
          "python -c \"import urllib.request; urllib.request.urlopen('http://127.0.0.1:8000/health').close()\"",
        ]
      interval: 30s
      timeout: 5s
      retries: 5
      start_period: 10s
    networks:
      - app
      - proxy

  backend-dev:
    <<: *backend-common
    profiles: [dev]
    container_name: backend-dev
    build:
      context: ./backend
      dockerfile: Dockerfile
      target: development
    environment:
      ENVIRONMENT: development
      PYTHONPATH: /app
    command: ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000", "--reload"]
    ports:
      - "8000:8000" # Localhost access during development
    volumes:
      - ./backend:/app
      - backend-venv:/app/.venv
    healthcheck:
      test:
        [
          "CMD-SHELL",
          "python -c \"import urllib.request; urllib.request.urlopen('http://127.0.0.1:8000/health').close()\"",
        ]
      interval: 15s
      timeout: 5s
      retries: 5
      start_period: 10s
    networks:
      app:
        aliases:
          - backend

  # --------------------------------------------------------------------------
  #   PostgreSQL + pgvector
  # --------------------------------------------------------------------------
  postgres:
    <<: *service-defaults
    container_name: postgres
    image: pgvector/pgvector:pg16
    profiles:
      - dev
      - prod
    volumes:
      - postgres-data:/var/lib/postgresql/data
    ports:
      - "127.0.0.1:${POSTGRES_PORT:-5432}:5432" # Local-only binding keeps DB off the public interface
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U ${POSTGRES_USER:-postgres} -d ${POSTGRES_DB:-postgres}"]
      interval: 10s
      timeout: 5s
      retries: 5

  # --------------------------------------------------------------------------
  #   LiveKit Real-Time Server
  # --------------------------------------------------------------------------
  livekit:
    <<: *service-defaults
    container_name: livekit
    image: livekit/livekit-server:latest
    profiles:
      - dev
      - prod
    # UDP/TCP ports remain published in prod so external clients can complete WebRTC/TURN;
    # Caddy still proxies signaling over the shared proxy network.
    environment:
      LIVEKIT_KEYS: "${LIVEKIT_API_KEY}:${LIVEKIT_API_SECRET}"
      LIVEKIT_PORT: 7880
      LIVEKIT_LOG_LEVEL: ${LIVEKIT_LOG_LEVEL:-info}
    ports:
      - "7880:7880"                   # HTTP/WS signaling (Caddy terminates TLS)
      - "7881:7881"                   # TCP fallback for WebRTC
      - "3478:3478/udp"               # TURN
      - "5349:5349/tcp"               # TURN over TLS
      - "50000-60000:50000-60000/udp" # WebRTC media plane
    networks:
      - app
      - proxy

volumes:
  postgres-data:
  backend-venv:
  frontend-node_modules:

networks:
  app:
    name: app_network
  proxy:
    name: proxy
    external: true