# Stage 1: Install production dependencies
FROM --platform=linux/amd64 node:20-slim AS deps
WORKDIR /app
COPY package.json package-lock.json ./
RUN npm ci --omit=dev

# Stage 2: Build the application
FROM --platform=linux/amd64 node:20-slim AS builder
WORKDIR /app
COPY --from=deps /app/node_modules ./node_modules
COPY . .
ENV NODE_ENV=production
RUN npm run build

# Stage 3: Production runner
FROM --platform=linux/amd64 node:20-slim AS runner
WORKDIR /app
ENV NODE_ENV=production
ENV PORT=3000
ENV HOSTNAME=0.0.0.0

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

# Copy standalone server and static assets
COPY --from=builder --chown=nextjs:nodejs /app/public ./public
COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static

# Copy seeds/forms for form library import feature (runtime dependency)
COPY --from=builder --chown=nextjs:nodejs /app/seeds ./seeds

# Create uploads directory (will be mounted as volume)
RUN mkdir -p uploads && chown nextjs:nodejs uploads

USER nextjs
EXPOSE 3000

HEALTHCHECK --interval=30s --timeout=10s --start-period=15s --retries=3 \
  CMD wget --no-verbose --tries=1 --spider http://localhost:3000/api/health || exit 1

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