# Build stage: compile the C++ engine.
FROM debian:trixie-slim AS build
RUN apt-get update \
    && apt-get install -y --no-install-recommends g++ make \
    && rm -rf /var/lib/apt/lists/*
WORKDIR /src
COPY engine ./engine
COPY Makefile ./
RUN make engine

# Runtime stage: FastAPI service + engine binary.
FROM python:3.13-slim
WORKDIR /app
COPY api/requirements.txt ./api/requirements.txt
RUN pip install --no-cache-dir -r api/requirements.txt
COPY api ./api
COPY --from=build /src/build/gomoku_engine ./build/gomoku_engine

ENV ENGINE_PATH=/app/build/gomoku_engine \
    ENGINE_TT_MB=128 \
    DEFAULT_TIME_MS=1000

EXPOSE 8099
CMD ["uvicorn", "main:app", "--app-dir", "/app/api", "--host", "0.0.0.0", "--port", "8099"]
