# Stage 1: Build React frontend
FROM node:20-alpine AS frontend-build
WORKDIR /app/frontend
COPY frontend/package.json frontend/package-lock.json* ./
RUN npm ci
COPY frontend/ ./
RUN npm run build

# Stage 2: Backend runtime with frontend static files
FROM python:3.11-slim AS runtime
WORKDIR /app

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

# Copy backend source
COPY backend/ ./

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

# Create data directory for SQLite
RUN mkdir -p /app/data

# Run as non-root user
RUN useradd -m -u 1000 appuser && chown -R appuser:appuser /app
USER appuser

EXPOSE 8000

HEALTHCHECK --interval=30s --timeout=10s --start-period=15s --retries=3 \
    CMD python -c "import urllib.request; urllib.request.urlopen('http://localhost:8000/api/todos')" || exit 1

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