# Use official Python base image
FROM python:3.11-slim

# Set working directory
WORKDIR /app

# Install system dependencies
RUN apt-get update && apt-get install -y \
    build-essential \
    libfaiss-dev \
    && rm -rf /var/lib/apt/lists/*

# Create a non-root user (Required by HF Spaces)
RUN useradd -m -u 1000 user
USER user
ENV PATH="/home/user/.local/bin:$PATH"

# Copy requirements and install
COPY --chown=user requirements.txt .
RUN pip install --no-cache-dir --upgrade pip && \
    pip install --no-cache-dir -r requirements.txt

# Copy the application code
COPY --chown=user . .

# Set environment variables
ENV PYTHONUNBUFFERED=1
ENV PYTHONPATH=/app
# HF Spaces expects port 7860
ENV PORT=7860
# Online Mode allowed for Spaces (to download model)
ENV FORCE_OFFLINE=0

# Expose the port
EXPOSE 7860

# Run the server
CMD ["gunicorn", "--workers=1", "--threads=4", "--timeout=300", "--bind=0.0.0.0:7860", "src.app.server:app"]