# ── Stage 1: Build React frontend ──
FROM node:20-slim AS frontend-build

WORKDIR /app/frontend
COPY frontend/package.json frontend/package-lock.json* ./
RUN npm ci --production=false
COPY frontend/ ./
RUN npm run build

# ── Stage 2: Production image ──
FROM python:3.11-slim

WORKDIR /app

# Install Python dependencies
COPY backend/requirements.txt ./
RUN pip install --no-cache-dir -r requirements.txt

# Copy backend code
COPY backend/ ./

# Copy built frontend into backend's static directory
COPY --from=frontend-build /app/frontend/dist ./static

# HuggingFace Spaces requires port 7860
EXPOSE 7860

# Run with uvicorn (production)
CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "7860"]