FROM python:3.12-slim as builder

WORKDIR /app

RUN apt-get update && apt-get install -y --no-install-recommends \
    build-essential gcc \
    && rm -rf /var/lib/apt/lists/*

COPY requirements.txt .
RUN pip install --user --no-cache-dir \
    --extra-index-url https://download.pytorch.org/whl/cpu \
    -r requirements.txt

# Production stage — backend only
FROM python:3.12-slim

WORKDIR /app

RUN apt-get update && apt-get install -y --no-install-recommends curl \
    && rm -rf /var/lib/apt/lists/*

COPY --from=builder /root/.local /root/.local
ENV PATH=/root/.local/bin:$PATH
ENV SPACE_URL=https://fredyhoundayi-quick.hf.space

# Copy only backend files (no frontend)
COPY main.py .
COPY requirements.txt .
COPY services/ ./services/
COPY utils/ ./utils/

RUN mkdir -p /app/storage/chroma /app/storage/memory

EXPOSE 8000

HEALTHCHECK --interval=30s --timeout=10s --start-period=60s --retries=3 \
    CMD curl -f http://localhost:8000/ || exit 1

CMD ["python", "main.py"]