# The single compose file for dev and prod.
#
# Dev: VS Code attaches to `api` (see .devcontainer/devcontainer.json) and
# starts `runServices` (everything but watchtower). Dev specifics
# (autoreload, editor, SSH keys, docker CLI) come from devcontainer.json.
# Prod: `docker compose up -d --build` (own .env with secrets +
# FRONTEND_MODE=preview). Code updates via `git pull` + restart; image
# rebuilds only for dependency changes.
services:
  api:
    build:
      context: ./backend
      dockerfile: Dockerfile
    env_file:
      # Optional: fresh clones and CI checkouts have no `.env` (gitignored);
      # containers must still create so `config`/`build` work everywhere.
      # Runtime secrets come from `.env` when present (see setup.sh).
      - path: .env
        required: false
    volumes:
      # No venv volume by design: the venv lives at /opt/venv (image-local,
      # see backend/Dockerfile). A named volume here used to shadow the image
      # content with an empty dir on first start (split-brain with the host
      # checkout, plus root-owned interpreters).
      - .:/srv/kirche-einfach
    ports:
      - "8000:8000" # FastAPI
    depends_on:
      lfx:
        condition: service_healthy
      langflow:
        condition: service_healthy
    restart: unless-stopped
    healthcheck:
      test:
        [
          "CMD-SHELL",
          "python -c \"import urllib.request; urllib.request.urlopen('http://localhost:8000/health', timeout=5)\"",
        ]
      interval: 30s
      timeout: 5s
      retries: 3
      start_period: 30s

  frontend:
    build:
      context: ./frontend
      dockerfile: Dockerfile
    env_file:
      # Optional: fresh clones and CI checkouts have no `.env` (gitignored);
      # containers must still create so `config`/`build` work everywhere.
      # Runtime secrets come from `.env` when present (see setup.sh).
      - path: .env
        required: false
    environment:
      # Dev default (HMR); prod .env sets `preview` (build + serve bundle).
      FRONTEND_MODE: ${FRONTEND_MODE:-dev}
    volumes:
      # No node_modules volume by design: deps live in the bind-mount and the
      # entrypoint runs `npm ci` on first start (a volume used to shadow the
      # image install with an empty dir and diverge from the host checkout).
      - .:/srv/kirche-einfach
    ports:
      - "3000:3000" # Vite
    depends_on:
      api:
        condition: service_healthy
    restart: unless-stopped

  langflow:
    # Pinned (never :latest): Langflow and LFX are versioned together, their
    # major.minor must match. Bump via LANGFLOW_VERSION in .env (see
    # .env.example) together with Dockerfile.lfx + backend `lfx~=` pin.
    image: langflowai/langflow:${LANGFLOW_VERSION:-1.12.0}
    env_file:
      # Optional: fresh clones and CI checkouts have no `.env` (gitignored);
      # containers must still create so `config`/`build` work everywhere.
      # Runtime secrets come from `.env` when present (see setup.sh).
      - path: .env
        required: false
    environment:
      # Static values only; secrets/URLs come from .env via env_file.
      LANGFLOW_CONFIG_DIR: /app/langflow
      LANGFLOW_HOST: 0.0.0.0
      PORT: "7860"
      LANGFLOW_AUTO_LOGIN: "false"
      LANGFLOW_API_KEY_SOURCE: env
      # SQLite file inside the langflow-data volume (absolute path required
      # by Langflow); overrides any postgres URL that may linger in .env.
      LANGFLOW_DATABASE_URL: sqlite:////app/langflow/langflow.db
      # Custom form-input components (backend/components, category folders).
      LANGFLOW_COMPONENTS_PATH: /app/components
      # Seed the authoring UI with the canonical flows (read-only: the files
      # stay the source of truth, the API watcher is the only sync path).
      LANGFLOW_LOAD_FLOWS_PATH: /app/flows
    volumes:
      - langflow-data:/app/langflow
      - ./backend/components:/app/components:ro
      - ./backend/flows:/app/flows:ro
    ports:
      - "7860:7860"
    restart: unless-stopped
    healthcheck:
      test:
        [
          "CMD-SHELL",
          "python -c \"import urllib.request; urllib.request.urlopen('http://localhost:7860/health', timeout=5)\"",
        ]
      interval: 30s
      timeout: 5s
      retries: 20
      start_period: 60s

  lfx:
    build:
      context: .
      dockerfile: Dockerfile.lfx
    env_file:
      # Optional: fresh clones and CI checkouts have no `.env` (gitignored);
      # containers must still create so `config`/`build` work everywhere.
      # Runtime secrets come from `.env` when present (see setup.sh).
      - path: .env
        required: false
    volumes:
      - lfx-data:/flows
    ports:
      - "6004:6004"
    restart: unless-stopped
    healthcheck:
      test:
        [
          "CMD-SHELL",
          "python -c \"import urllib.request; urllib.request.urlopen('http://localhost:6004/health', timeout=5)\"",
        ]
      interval: 30s
      timeout: 5s
      retries: 12
      start_period: 30s

  # Nightly auto-updates of :latest images (prod). Never started in dev
  # (not in devcontainer.json runServices; also needs a docker socket).
  # langflow/lfx carry no watchtower label on purpose: both are version-pinned
  # (major.minor must match) and update only via deliberate version bumps.
  watchtower:
    image: nickfedor/watchtower:latest
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock
    environment:
      WATCHTOWER_LABEL_ENABLE: "true"
      WATCHTOWER_SCHEDULE: "0 0 4 * * *"
      WATCHTOWER_CLEANUP: "true"
      WATCHTOWER_ROLLING_RESTART: "true"
    labels:
      com.centurylinklabs.watchtower.enable: "true"
    restart: unless-stopped

volumes:
  langflow-data:
  lfx-data: