# ---- Builder stage ----
FROM node:22-slim AS builder

WORKDIR /build

RUN npm install -g pnpm@10

# Build tools for native addons (discordjs/voice may need node-gyp)
RUN apt-get update -qq && apt-get install -y -qq --no-install-recommends \
    python3 make g++ \
    && rm -rf /var/lib/apt/lists/*

# Copy source + manifests
COPY services/backend/ ./

# Install ALL deps (devDeps needed for TypeScript build)
RUN --mount=type=cache,id=pnpm-store,target=/root/.local/share/pnpm/store \
    pnpm install --no-frozen-lockfile

# Build TypeScript
RUN ./node_modules/.bin/tsc

# Switch to production-only deps (strips devDeps + cleans .pnpm store)
RUN rm -rf node_modules && pnpm install --prod --no-frozen-lockfile

# ---- Runtime stage ----
FROM node:22-alpine

WORKDIR /app

COPY --from=builder --chown=node:node /build/dist ./dist
COPY --from=builder --chown=node:node /build/node_modules ./node_modules
COPY --from=builder --chown=node:node /build/package.json ./

USER node
EXPOSE 4001

HEALTHCHECK --interval=30s --timeout=10s --start-period=15s --retries=3 \
  CMD node -e "require('http').get('http://localhost:4001/api/health',r=>process.exit(r.statusCode===200?0:1))"

CMD ["node", "dist/index.js"]