# ── Stage 1: build the React SPA ─────────────────────────────────────────────
FROM node:20-slim AS frontend
WORKDIR /frontend
COPY frontend/package.json frontend/package-lock.json* ./
RUN npm install
COPY frontend/ ./
RUN npm run build

# ── Stage 2: Python runtime ──────────────────────────────────────────────────
FROM python:3.11-slim

ENV PYTHONDONTWRITEBYTECODE=1 \
    PYTHONUNBUFFERED=1 \
    PIP_NO_CACHE_DIR=1

WORKDIR /app

RUN apt-get update && apt-get install -y --no-install-recommends \
    fonts-dejavu-core \
    fonts-liberation \
    && rm -rf /var/lib/apt/lists/*

COPY requirements.txt ./
RUN python -m pip install --upgrade pip \
    && python -m pip install -r requirements.txt

COPY . .

# Bring in the built SPA from the frontend stage.
COPY --from=frontend /frontend/dist ./frontend/dist

RUN mkdir -p /app/cache /app/output

EXPOSE 8500

CMD ["python", "-m", "uvicorn", "app:app", "--host", "0.0.0.0", "--port", "8500"]