services:
  discoverygram:
    build:
      context: .
      dockerfile: Dockerfile
      args:
        # `make docker/run` exports this from the git tag. A plain
        # `docker compose up --build` leaves it unset, and the image reports
        # 0.0.0+unknown rather than claiming a version it does not have.
        VERSION: "${VERSION:-0.0.0+unknown}"
    image: lordraw/discoverygram:latest
    container_name: discoverygram
    restart: unless-stopped
    env_file:
      # Not hard-required: values may also come from the shell environment.
      # Missing configuration still fails fast with an explicit message (exit 2).
      - path: .env
        required: false
    environment:
      # Inside a container, a NoteDiscovery running on the host is reached via
      # host.docker.internal. Override NOTEDISCOVERY_URL in .env if it lives elsewhere.
      HEALTH_PORT: 8080
      TELEGRAM_WEBHOOK_PORT: 8081
    ports:
      - "${HEALTH_PORT:-8080}:8080"
      # Only reachable in TELEGRAM_MODE=webhook, and only meant to sit behind a
      # TLS-terminating reverse proxy — Telegram will not post to plain HTTP.
      # Polling deployments can leave this mapped; nothing listens on it.
      - "${TELEGRAM_WEBHOOK_PORT:-8081}:8081"
    extra_hosts:
      - "host.docker.internal:host-gateway"
    healthcheck:
      test: ["CMD", "python", "-c", "import urllib.request,sys; sys.exit(0 if urllib.request.urlopen('http://127.0.0.1:8080/healthz', timeout=4).status==200 else 1)"]
      interval: 30s
      timeout: 5s
      retries: 3
      start_period: 10s
    depends_on:
      redis:
        condition: service_healthy
        required: false

  # Only needed when SESSION_BACKEND=redis. Start it with:
  #   docker compose --profile redis up -d
  redis:
    image: redis:7-alpine
    container_name: discoverygram-redis
    restart: unless-stopped
    profiles: ["redis"]
    command: ["redis-server", "--save", "60", "1", "--appendonly", "no"]
    volumes:
      - redis-data:/data
    healthcheck:
      test: ["CMD", "redis-cli", "ping"]
      interval: 10s
      timeout: 3s
      retries: 5

volumes:
  redis-data: