# ── Hugging Face Spaces — Docker SDK ──────────────────────────
# HF Spaces requires port 7860 and the app to listen on 0.0.0.0
# SDK: docker (set in the Space README YAML frontmatter)

FROM python:3.10-slim

# System deps for faiss-cpu, pymupdf, sentence-transformers
RUN apt-get update && apt-get install -y --no-install-recommends \
        build-essential \
        libgl1 \
        libglib2.0-0 \
    && rm -rf /var/lib/apt/lists/*

WORKDIR /app

# Install Python deps first (layer cache)
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

# Pre-download the sentence-transformers model so it is baked into the image
RUN python -c "from sentence_transformers import SentenceTransformer; SentenceTransformer('all-MiniLM-L6-v2')"

# Copy backend source
COPY backend/ ./backend/

# HF Spaces exposes port 7860
EXPOSE 7860

# main.py uses relative imports (from core.x, from quiz.x)
# so we must run uvicorn from inside the backend/ directory
WORKDIR /app/backend
CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "7860"]