FROM node:20-bullseye-slim
ENV npm_config_registry=https://registry.npmmirror.com
ENV npm_config_build_from_source=true

# Build prerequisites for native modules (better-sqlite3)
RUN apt-get update \
    && apt-get install -y --no-install-recommends python3 make g++ \
    && rm -rf /var/lib/apt/lists/*

WORKDIR /app

# Install server deps in container (native modules match linux/amd64)
COPY server/package.json ./server/package.json
RUN cd server && npm install --omit=dev --build-from-source

# Copy server runtime and prebuilt frontend from host
COPY server/dist ./server/dist
COPY dist ./frontend

ENV PORT=3004
ENV DB_PATH=/data/purchase.db

EXPOSE 3004
CMD ["node", "server/dist/index.js"]