FROM python:3.10-slim

# Prevents Python from writing .pyc files & enables unbuffered logs
ENV PYTHONDONTWRITEBYTECODE=1
ENV PYTHONUNBUFFERED=1

WORKDIR /code

# System deps (optional but handy)
RUN apt-get update && apt-get install -y --no-install-recommends \
    curl ca-certificates && \
    rm -rf /var/lib/apt/lists/*

# Python deps
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

# App code
COPY . .

# HF Spaces will set OPENAI_API_KEY as a Secret in the environment
EXPOSE 7860

# Start FastAPI with uvicorn
CMD ["uvicorn", "app:app", "--host", "0.0.0.0", "--port", "7860"]