# ============================================================
# 🏗️  Stage 1 — Builder
# ============================================================
FROM node:20-alpine AS builder

# Install hanya yang diperlukan untuk build
RUN apk add --no-cache git bash build-base curl

WORKDIR /app

# Copy dependency list terlebih dahulu agar cache efektif
COPY package*.json ./

# Gunakan npm ci (lebih cepat, konsisten)
RUN npm ci --omit=dev

# Copy source code terakhir
COPY . .

# Buat config agar Next tahu mode static export
RUN echo "const config = { output: 'export', images: { unoptimized: true } }; export default config;" > next.config.mjs

# Build Next.js tanpa Turbopack, lalu hapus cache npm
ENV NEXT_DISABLE_TURBOPACK=1
RUN npx next build && npm cache clean --force

# Tambahkan cache folder _next agar bisa dilayani oleh server
RUN mkdir -p .next/server/app/_next && \
    cp -r .next/static .next/server/app/_next/static && \
    cp -r public/assets .next/server/app/ || true

# ============================================================
# 🧱  Stage 2 — Runtime (super ringan)
# ============================================================
FROM node:20-alpine AS runtime

# Install hanya 1 dependency ringan untuk serving static file
RUN npm install -g serve && apk add --no-cache tini

WORKDIR /app

# Copy hasil build dari stage sebelumnya
COPY --from=builder /app/.next/server/app ./server
COPY --from=builder /app/.next/server/app/_next ./server/_next
COPY --from=builder /app/public ./public

# Set environment minimal
ENV NODE_ENV=production
ENV PORT=3000

EXPOSE 3000

# Jalankan lewat tini untuk handle signal & memory leak
ENTRYPOINT ["/sbin/tini", "--"]

CMD ["serve", "-s", "server", "-l", "3000"]