# ── Build stage ───────────────────────────────────────────────────────────────
FROM python:3.11-slim AS builder

WORKDIR /build

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

COPY requirements.txt .
RUN pip install --no-cache-dir --prefix=/install -r requirements.txt


# ── Runtime stage ─────────────────────────────────────────────────────────────
FROM python:3.11-slim

# Non-root user (HuggingFace Spaces requirement)
RUN useradd -m -u 1000 appuser

WORKDIR /app

# Copy installed packages
COPY --from=builder /install /usr/local

# Copy application source
COPY app/       ./app/
COPY inference.py .

# Data directory — writable by appuser
RUN mkdir -p /data && chown appuser:appuser /data

USER appuser

# Environment
ENV DB_PATH=/data/dataclerk.db
ENV PORT=7860
ENV PYTHONUNBUFFERED=1
ENV PYTHONDONTWRITEBYTECODE=1

EXPOSE 7860

# Start server
CMD ["python", "-m", "uvicorn", "app.main:app", \
     "--host", "0.0.0.0", \
     "--port", "7860", \
     "--workers", "1", \
     "--timeout-keep-alive", "30"]