# Single self-contained image: FastAPI backend + built React frontend +
# Tesseract OCR. No external services required — pair with the optional
# ollama compose profile for local-LLM extraction.

FROM node:20-alpine AS frontend
WORKDIR /fe
COPY frontend/package.json frontend/package-lock.json ./
RUN npm ci --no-audit --no-fund
COPY frontend/ ./
RUN npm run build

FROM python:3.12-slim
RUN apt-get update \
    && apt-get install -y --no-install-recommends tesseract-ocr curl \
    && rm -rf /var/lib/apt/lists/*

WORKDIR /app
COPY backend/requirements.txt backend/requirements-ml.txt backend/
RUN pip install --no-cache-dir -r backend/requirements.txt \
    && pip install --no-cache-dir torch --index-url https://download.pytorch.org/whl/cpu \
    && pip install --no-cache-dir -r backend/requirements-ml.txt

COPY backend/ backend/
COPY data/samples/ data/samples/
COPY --from=frontend /fe/dist frontend/dist

# Hugging Face Spaces (and other non-root container runtimes) may run the
# process as a non-root UID, so make the data dir world-writable for the
# SQLite DB + uploaded PDFs.
RUN mkdir -p /app/data/uploads && chmod -R 777 /app/data

# Bake the zero-shot classifier weights into the image so on-prem/air-gapped
# deploys never reach out to huggingface.co at runtime.
ENV HF_HOME=/app/.hf
RUN cd backend && python -m app.zeroshot --download

ENV FRONTEND_DIST=/app/frontend/dist
EXPOSE 8000
HEALTHCHECK --interval=30s --timeout=5s --start-period=10s \
    CMD curl -fsS http://localhost:8000/api/health || exit 1

WORKDIR /app/backend
CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000"]