# ©AngelaMos | 2025
# Production FastAPI Dockerfile
# Multi stage build, gunicorn with uvicorn workers

FROM python:3.13-slim AS builder

ENV PYTHONUNBUFFERED=1 \
    PYTHONDONTWRITEBYTECODE=1

WORKDIR /app

COPY --from=ghcr.io/astral-sh/uv:latest /uv /uvx /bin/

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

COPY backend/pyproject.toml ./
RUN uv pip install --target /app/deps . gunicorn

FROM python:3.13-slim

WORKDIR /app

RUN apt-get update && \
    apt-get install -y --no-install-recommends \
    libpq5 \
    curl && \
    rm -rf /var/lib/apt/lists/* && \
    useradd -m -u 1000 appuser

COPY --from=builder /app/deps /home/appuser/.local/lib/python3.13/site-packages
ENV PYTHONPATH=/home/appuser/.local/lib/python3.13/site-packages:$PYTHONPATH \
    PATH=/home/appuser/.local/lib/python3.13/site-packages/bin:$PATH

COPY backend/ .

RUN chown -R appuser:appuser /app
USER appuser

EXPOSE 8000

HEALTHCHECK --interval=30s --timeout=10s --start-period=40s --retries=3 \
    CMD curl -f http://localhost:8000/health || exit 1

CMD ["gunicorn", "app.main:app", \
     "--workers", "4", \
     "--worker-class", "uvicorn.workers.UvicornWorker", \
     "--bind", "0.0.0.0:8000", \
     "--access-logfile", "-", \
     "--error-logfile", "-"]