FROM node:22-alpine AS base

# ── deps: install production + dev dependencies ───────────────────────────────
FROM base AS deps
WORKDIR /app
COPY package*.json ./
RUN npm ci

# ── builder: generate Prisma client + build Next.js ──────────────────────────
FROM base AS builder
WORKDIR /app
COPY --from=deps /app/node_modules ./node_modules
COPY . .
RUN npx prisma generate
RUN npm run build

# ── runner: minimal production image ─────────────────────────────────────────
FROM base AS runner
WORKDIR /app
ENV NODE_ENV=production

RUN addgroup --system --gid 1001 nodejs && \
    adduser --system --uid 1001 nextjs && \
    apk add --no-cache curl

COPY --from=builder /app/public ./public
COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static

USER nextjs
EXPOSE 3000
ENV PORT=3000
ENV HOSTNAME="0.0.0.0"

HEALTHCHECK --interval=30s --timeout=10s --start-period=60s --retries=3 \
  CMD curl -f http://localhost:3000/api/health || exit 1

CMD ["node", "server.js"]