# ============================================================================
# FASHIONISTAR — Production Docker Compose (Oracle Cloud Always Free VM)
# ============================================================================
# Deploys on: Oracle Cloud VM.Standard.A1.Flex (2 OCPUs / 12 GB RAM / ARM64)
#
# Services on Oracle (THIS FILE):
#   nginx      — Reverse proxy + SSL termination (Let's Encrypt)
#   api        — Django ASGI via Gunicorn + UvicornWorker  (separate API logs)
#   keepalive  — Oracle idle-prevention pinger (every 4 minutes)
#
# ❌ NO postgres container — uses Neon PostgreSQL (DATABASE_URL in .env.production)
# ❌ NO redis container   — uses Aiven Redis (REDIS_URL=rediss://... in .env.production)
#
# Services on Northflank (northflank.json):
#   celery_worker  — All background task queues  (separate Celery logs)
#   celery_beat    — Celery Beat scheduler (cron job)
#
# Both API (Oracle) and Celery (Northflank) share the SAME Aiven Redis
# for broker/cache — no cross-cloud Redis setup needed!
#
# Usage:
#   docker compose -f docker-compose.production.yml up -d
#   docker compose -f docker-compose.production.yml pull && \
#     docker compose -f docker-compose.production.yml up -d --no-deps api
# ============================================================================

version: '3.9'

services:

  # ── Nginx: Reverse proxy + SSL + Static files ───────────────────────────────
  nginx:
    image: nginx:1.27-alpine
    container_name: fashionistar_nginx
    ports:
      - "80:80"
      - "443:443"
    volumes:
      - ./deploy/nginx/conf.d:/etc/nginx/conf.d:ro
      - /etc/letsencrypt:/etc/letsencrypt:ro
      - static_files:/app/staticfiles:ro
      - media_files:/app/mediafiles:ro
      - nginx_logs:/var/log/nginx
    depends_on:
      api:
        condition: service_healthy
    restart: always
    networks:
      - fashionistar_net
    logging:
      driver: "json-file"
      options:
        max-size: "50m"
        max-file: "5"
    healthcheck:
      test: ["CMD", "nginx", "-t"]
      interval: 30s
      timeout: 10s
      retries: 3

  # ── Django ASGI API Gateway ─────────────────────────────────────────────────
  # PORT=10000 (matches fashionistar_backend_production.env)
  # Uses Aiven Redis (TLS rediss://) from .env.production — NO local Redis needed
  # Uses Neon PostgreSQL (DATABASE_URL) from .env.production — NO local DB needed
  # Separate from Celery — has its own log volume (api_logs)
  api:
    image: ghcr.io/${GITHUB_REPOSITORY:-fashionistar-clothings/fashionistar_backend}/api:${IMAGE_TAG:-latest}
    container_name: fashionistar_api
    pull_policy: always
    # Load ALL production secrets from .env.production (mirrors fashionistar_backend_production.env)
    env_file:
      - .env.production
    environment:
      # ── Core Settings ───────────────────────────────────────────────────────
      - DJANGO_SETTINGS_MODULE=backend.config.production
      # PORT must be 10000 to match your fashionistar_backend_production.env
      - PORT=10000
      # ── Oracle Cloud VM: 2 OCPUs → 4 Gunicorn workers (2×CPU, I/O-bound) ──
      - GUNICORN_WORKERS=4
      - GUNICORN_TIMEOUT=300
      - GUNICORN_KEEPALIVE=75
      - GUNICORN_LOG_LEVEL=info
      # ── Updated Hosts — include Oracle domain ───────────────────────────────
      - ALLOWED_HOSTS=api.fashionistar.net,fashionistar.net,fashionistar-frontend.vercel.app,localhost,127.0.0.1
      - BACKEND_URL=https://api.fashionistar.net
      - BACKEND_TUNNEL_URL=https://api.fashionistar.net
      - SITE_URL=https://api.fashionistar.net
      - HEALTH_URL_ENDPOINT=https://api.fashionistar.net/api/v1/health
      # ── CORS / CSRF — include Oracle domain ────────────────────────────────
      - CORS_ALLOWED_ORIGINS=https://fashionistar.net,https://fashionistar-frontend.vercel.app,https://api.fashionistar.net
      - CSRF_TRUSTED_ORIGINS=https://fashionistar.net,https://fashionistar-frontend.vercel.app,https://api.fashionistar.net
      # ── Log directory — separate from Celery ───────────────────────────────
      - LOG_DIR=/app/logs/api
    volumes:
      - static_files:/app/staticfiles
      - media_files:/app/mediafiles
      # Dedicated API log volume — Celery logs are separate (on Northflank)
      - api_logs:/app/logs/api
    # No depends_on redis or postgres — both are external managed services
    restart: always
    deploy:
      resources:
        limits:
          # Oracle 2 OCPU / 12 GB RAM — reserve headroom for OS + logging
          cpus: '1.8'
          memory: 9G
        reservations:
          cpus: '0.5'
          memory: 2G
    networks:
      - fashionistar_net
    logging:
      driver: "json-file"
      options:
        max-size: "100m"
        max-file: "10"
        tag: "fashionistar-api"
    healthcheck:
      # PORT=10000 (matches production env)
      test: ["CMD", "curl", "-fsS", "http://127.0.0.1:10000/api/v1/health/"]
      interval: 30s
      timeout: 10s
      start_period: 90s
      retries: 5

  # ── Oracle Keep-Alive (Idle Prevention) ─────────────────────────────────────
  # Oracle reclaims Always Free instances if CPU < 10% for 7 consecutive days.
  # This lightweight pinger on PORT=10000 prevents idle reclamation.
  keepalive:
    image: curlimages/curl:8-alpine
    container_name: fashionistar_keepalive
    command: >
      sh -c "while true; do
        curl -fsS http://api:10000/api/v1/health/ > /dev/null 2>&1 || true;
        sleep 240;
      done"
    depends_on:
      - api
    restart: always
    deploy:
      resources:
        limits:
          cpus: '0.05'
          memory: 32M
    networks:
      - fashionistar_net
    logging:
      driver: "json-file"
      options:
        max-size: "5m"
        max-file: "2"

# ── Volumes ──────────────────────────────────────────────────────────────────
volumes:
  static_files:
    name: fashionistar_static_files
  media_files:
    name: fashionistar_media_files
  # Dedicated API log volume (Django ASGI gateway logs only — Celery logs on Northflank)
  api_logs:
    name: fashionistar_api_logs
    driver: local
    driver_opts:
      type: none
      o: bind
      device: /var/log/fashionistar/api
  # Nginx access/error logs
  nginx_logs:
    name: fashionistar_nginx_logs
    driver: local
    driver_opts:
      type: none
      o: bind
      device: /var/log/fashionistar/nginx

# ── Networks ─────────────────────────────────────────────────────────────────
networks:
  fashionistar_net:
    name: fashionistar_production_net
    driver: bridge
    ipam:
      driver: default
      config:
        - subnet: 172.20.0.0/16