# Stage 1: Install dependencies
FROM node:20-alpine AS deps
WORKDIR /app

RUN apk add --no-cache libc6-compat

COPY package*.json ./
RUN npm ci --omit=dev


# Stage 2: Build Next.js with standalone output
FROM node:20-alpine AS builder
WORKDIR /app

COPY package*.json ./
RUN npm ci

COPY . .

ENV NEXT_TELEMETRY_DISABLED=1
ENV NEXT_OUTPUT=standalone

ARG NEXT_PUBLIC_API_URL
ARG NEXT_PUBLIC_SOCKET_URL
ARG NEXT_PUBLIC_GOOGLE_MAPS_KEY

ENV NEXT_PUBLIC_API_URL=$NEXT_PUBLIC_API_URL
ENV NEXT_PUBLIC_SOCKET_URL=$NEXT_PUBLIC_SOCKET_URL
ENV NEXT_PUBLIC_GOOGLE_MAPS_KEY=$NEXT_PUBLIC_GOOGLE_MAPS_KEY

RUN npm run build


# Stage 3: Minimal production runner
FROM node:20-alpine AS runner
WORKDIR /app

ENV NODE_ENV=production
ENV NEXT_TELEMETRY_DISABLED=1

RUN addgroup --system --gid 1001 nodejs && \
    adduser --system --uid 1001 nextjs

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=20s --retries=3 \
  CMD wget --quiet --tries=1 --spider http://localhost:3000/ || exit 1

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