# Multi-stage build for Strat-Chatbot
FROM python:3.12-slim AS builder

WORKDIR /app

# Install system dependencies for sentence-transformers (PyTorch, etc.)
RUN apt-get update && apt-get install -y --no-install-recommends \
    gcc \
    g++ \
    && rm -rf /var/lib/apt/lists/*

# Install Poetry
RUN pip install --no-cache-dir poetry

# Copy dependencies
COPY pyproject.toml ./
COPY README.md ./

# Install dependencies
RUN poetry config virtualenvs.in-project true && \
    poetry install --no-interaction --no-ansi --only main

# Final stage
FROM python:3.12-slim

WORKDIR /app

# Copy virtual environment from builder
COPY --from=builder /app/.venv .venv
ENV PATH="/app/.venv/bin:$PATH"

# Create non-root user
RUN useradd --create-home --shell /bin/bash app && chown -R app:app /app
USER app

# Copy application code
COPY --chown=app:app app/ ./app/
COPY --chown=app:app data/ ./data/
COPY --chown=app:app scripts/ ./scripts/

# Create data directories
RUN mkdir -p data/chroma data/rules

# Expose ports
EXPOSE 8000

# Run FastAPI server
CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000"]