# ===========================
# 秒思智能审核平台 - Frontend Dockerfile
# 多阶段构建，基于 node:20-alpine
# ===========================

# ---------- Stage 1: 安装依赖 ----------
FROM node:20-alpine AS deps

WORKDIR /app

# 复制依赖描述文件
COPY package.json package-lock.json ./

# 安装生产依赖
RUN npm ci --ignore-scripts

# ---------- Stage 2: 构建应用 ----------
FROM node:20-alpine AS builder

WORKDIR /app

# 从 deps 阶段复制 node_modules
COPY --from=deps /app/node_modules ./node_modules
COPY . .

# 构建时环境变量（NEXT_PUBLIC_ 前缀的变量在构建时注入）
ARG NEXT_PUBLIC_API_BASE_URL=http://localhost:8000
ARG NEXT_PUBLIC_USE_MOCK=false

ENV NEXT_PUBLIC_API_BASE_URL=$NEXT_PUBLIC_API_BASE_URL
ENV NEXT_PUBLIC_USE_MOCK=$NEXT_PUBLIC_USE_MOCK

# 启用 standalone 输出模式并构建
ENV NEXT_TELEMETRY_DISABLED=1
RUN npm run build

# ---------- Stage 3: 运行时镜像 ----------
FROM node:20-alpine AS runner

WORKDIR /app

ENV NODE_ENV=production
ENV NEXT_TELEMETRY_DISABLED=1

# 创建非 root 用户
RUN addgroup --system --gid 1001 nodejs \
    && adduser --system --uid 1001 nextjs

# 从 builder 阶段复制 standalone 产物
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=5s --start-period=10s --retries=3 \
    CMD wget --no-verbose --tries=1 --spider http://localhost:3000/ || exit 1

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