# ---- Build frontend ----
FROM node:20-slim AS frontend-build

# VITE_API_URL: leave empty for same-origin (backend serves frontend),
# or set to a full URL (e.g. https://api.example.com) for cross-origin.
ARG VITE_API_URL=""
ENV VITE_API_URL=$VITE_API_URL

WORKDIR /app/frontend
COPY frontend/package.json frontend/package-lock.json* ./
RUN npm install
COPY frontend/ ./
RUN npm run build

# ---- Runtime ----
FROM python:3.11-slim

WORKDIR /app

# Install uv
RUN pip install uv

# Copy backend
COPY backend/pyproject.toml backend/
COPY backend/visual_notebook/ backend/visual_notebook/

# Install backend dependencies
RUN cd backend && uv pip install --system -e .

# Copy demo data
COPY datasets/ /app/datasets/

# Copy built frontend
COPY --from=frontend-build /app/frontend/dist /app/static

# Environment defaults (override at runtime via -e or orchestrator)
ENV DATA_DIR=/app/datasets
ENV CHECKPOINT_DIR=/app/checkpoints
ENV CORS_ORIGINS=*
ENV HOST=0.0.0.0
ENV PORT=7860
ENV STATIC_DIR=/app/static

# Create checkpoints dir
RUN mkdir -p /app/checkpoints

# Expose port (HF Spaces uses 7860, Render auto-detects)
EXPOSE 7860

# Health check for container orchestrators
HEALTHCHECK --interval=30s --timeout=10s --start-period=15s --retries=3 \
  CMD python -c "import urllib.request; urllib.request.urlopen('http://localhost:7860/health')" || exit 1

# Start command
CMD ["uvicorn", "visual_notebook.main:app", "--host", "0.0.0.0", "--port", "7860", "--workers", "1"]