# ERP Nutzfahrzeuge — Backend Dockerfile
# Python 3.13-slim + FastAPI + uvicorn
# System packages: WeasyPrint (libpango, libcairo), Pillow (libjpeg, libpng)

FROM python:3.13-slim AS base

# --- System packages for WeasyPrint and Pillow ---
RUN apt-get update && apt-get install -y --no-install-recommends \
    libpango-1.0-0 \
    libpangoft2-1.0-0 \
    libcairo2 \
    libgdk-pixbuf2.0-0 \
    libjpeg62-turbo \
    libpng16-16 \
    libffi-dev \
    curl \
    && rm -rf /var/lib/apt/lists/*

# --- Python venv ---
RUN python -m venv /opt/venv
ENV PATH="/opt/venv/bin:$PATH"
ENV PYTHONDONTWRITEBYTECODE=1
ENV PYTHONUNBUFFERED=1

WORKDIR /app

# --- Install dependencies first (better layer caching) ---
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

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

# --- Create upload and contract directories ---
RUN mkdir -p /data/uploads /tmp/contracts

# --- Expose port ---
EXPOSE 8000

# --- Health check ---
HEALTHCHECK --interval=30s --timeout=5s --retries=3 --start-period=10s \
    CMD curl -f http://localhost:8000/api/v1/health || exit 1

# --- Start command ---
CMD ["python", "-m", "uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000", "--workers", "4"]