# Build stage
FROM node:18-alpine AS builder

WORKDIR /app

# Accept build args for Next.js public env vars (baked in at build time)
ARG NEXT_PUBLIC_PUSHER_APP_KEY
ARG NEXT_PUBLIC_PUSHER_CLUSTER
ARG NEXT_PUBLIC_SUPABASE_URL
ARG NEXT_PUBLIC_SUPABASE_ANON_KEY

ENV NEXT_PUBLIC_PUSHER_APP_KEY=$NEXT_PUBLIC_PUSHER_APP_KEY
ENV NEXT_PUBLIC_PUSHER_CLUSTER=$NEXT_PUBLIC_PUSHER_CLUSTER
ENV NEXT_PUBLIC_SUPABASE_URL=$NEXT_PUBLIC_SUPABASE_URL
ENV NEXT_PUBLIC_SUPABASE_ANON_KEY=$NEXT_PUBLIC_SUPABASE_ANON_KEY

COPY package*.json ./
RUN npm ci

COPY . .

RUN npm run build

# Production stage
FROM node:18-alpine AS runner

WORKDIR /app

ENV NODE_ENV=production

# Copy built assets
COPY --from=builder /app/.next/standalone ./
COPY --from=builder /app/.next/static ./.next/static
COPY --from=builder /app/public ./public

EXPOSE 3000

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