# ── HF Space 2: Visualizer Dashboard ──────────────────────────────────────
#
# Lightweight image — no CityFlow C++ build, no torch.
# All simulation runs are delegated to Space 1 (OpenEnv API) via HTTP.
#
# HF Spaces expects the app to listen on port 7860.
#
# Required env vars (set in the Space settings or README front matter):
#   OPENENV_API_URL   URL of the OpenEnv API Space
#                     e.g. https://your-org-openenv-api.hf.space
#
# Optional:
#   DATA_DIR          city config root for roadnet matching (default: /app/data/bundled)
#   REPLAY_ROOT       where replays are cached on disk (default: /app/results/replays)
# ---------------------------------------------------------------------------

FROM python:3.12-slim

WORKDIR /app

# Install dependencies (no cmake / build-essential needed)
COPY server/requirements.txt ./requirements.txt
RUN pip install --no-cache-dir -r requirements.txt

# Application source
COPY server/           ./server/
COPY third_party/CityFlow/frontend/ ./third_party/CityFlow/frontend/

# Bundled city data (for roadnet matching / city/scenario dropdowns)
COPY data/bundled/  ./data/bundled/
COPY data/splits/   ./data/splits/

# Writable directory for cached replays
RUN mkdir -p /app/results/replays

ENV DATA_DIR=/app/data/bundled
ENV REPLAY_ROOT=/app/results/replays

EXPOSE 7860

CMD ["uvicorn", "server.visualizer_app:app", "--host", "0.0.0.0", "--port", "7860"]