FROM python:3.11-slim

ENV PYTHONUNBUFFERED=1 \
    PYTHONDONTWRITEBYTECODE=1 \
    PIP_NO_CACHE_DIR=1 \
    PIP_DISABLE_PIP_VERSION_CHECK=1 \
    HF_HOME=/app/.cache/huggingface

WORKDIR /app

# System deps: pdfplumber needs poppler; sentence-transformers needs build tools
RUN apt-get update && apt-get install -y --no-install-recommends \
    build-essential \
    libpoppler-cpp-dev \
    poppler-utils \
    && rm -rf /var/lib/apt/lists/*

COPY pyproject.toml ./
RUN pip install --upgrade pip && pip install .

COPY app ./app

# Pre-download BGE-small so first request isn't slow
RUN python -c "from sentence_transformers import SentenceTransformer; SentenceTransformer('BAAI/bge-small-en-v1.5')" || true

EXPOSE 7860

CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "7860", "--workers", "1"]