# --------------------
# Base image & metadata
# --------------------
FROM python:3.10-slim

LABEL maintainer="Your Name <you@example.com>" \
      description="Streamlit app with spaCy, CPU-only, for Hugging Face Space"

# --------------------
# Environment variables
# --------------------
ENV PYTHONUNBUFFERED=1 \
    PIP_NO_CACHE_DIR=1 \
    PORT=7860 \
    HOME=/code \
    STREAMLIT_HOME=/code/.streamlit \
    STREAMLIT_SERVER_HEADLESS=true \
    STREAMLIT_SERVER_ENABLECORS=false \
    STREAMLIT_SERVER_ENABLEWEBRTC=false \
    STREAMLIT_SERVER_PORT=7860

# --------------------
# Working directory
# --------------------
WORKDIR /code

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

# --------------------
# Python dependencies
# --------------------
COPY requirements.txt .
RUN pip install --upgrade pip setuptools wheel \
    && pip install -r requirements.txt

# --------------------
# spaCy English model
# --------------------
RUN python -m spacy download en_core_web_sm

# --------------------
# Copy application code
# --------------------
COPY . .

# --------------------
# Expose port
# --------------------
EXPOSE 7860

# --------------------
# Create non-root user (optional but recommended)
# --------------------
ARG USER_UID=1000
ARG USER_GID=1000

RUN groupadd --gid "$USER_GID" appgroup \
    && useradd --uid "$USER_UID" --gid appgroup --shell /bin/false --no-create-home appuser \
    && chown -R appuser:appgroup /code

USER appuser

# --------------------
# Entrypoint
# --------------------
ENTRYPOINT ["streamlit", "run", "app.py"]
CMD ["--server.address=0.0.0.0", "--server.port=7860"]