# 多阶段构建：Next.js 生产镜像（standalone 模式）
# 用法：docker build -t edu/teacher-portal:latest -f apps/teacher-portal/Dockerfile .
# 端口规范：teacher-portal :4000（matrix.md §1 微前端层）

# ============ Builder ============
FROM node:20-alpine AS builder
WORKDIR /app

# 启用 pnpm
RUN corepack enable && corepack prepare pnpm@9.12.0 --activate

# 先拷依赖清单，利用缓存（含 workspace 共享包）
COPY package.json pnpm-lock.yaml* pnpm-workspace.yaml* tsconfig.base.json* ./
COPY apps/teacher-portal/package.json ./apps/teacher-portal/
COPY packages/ui-tokens/package.json ./packages/ui-tokens/
COPY packages/ui-components/package.json ./packages/ui-components/
COPY packages/hooks/package.json ./packages/hooks/
# 安装依赖（含 devDependencies，构建需要）
RUN pnpm install --filter @edu/teacher-portal... --frozen-lockfile || pnpm install --filter @edu/teacher-portal...

# 拷源码
COPY apps/teacher-portal ./apps/teacher-portal
COPY packages/ui-tokens ./packages/ui-tokens
COPY packages/ui-components ./packages/ui-components
COPY packages/hooks ./packages/hooks

# 构建（禁用 telemetry，生产模式，standalone 输出）
ENV NEXT_TELEMETRY_DISABLED=1
RUN pnpm --filter @edu/teacher-portal run build

# ============ Runtime ============
FROM node:20-alpine AS runner
WORKDIR /app

ENV NODE_ENV=production
ENV NEXT_TELEMETRY_DISABLED=1
ENV PORT=4000

# 非 root 用户运行
RUN addgroup -g 1001 -S nodejs && adduser -S nextjs -u 1001

# 拷 standalone 产物（已含 node_modules 和 server.js，自包含）
COPY --from=builder --chown=nextjs:nodejs /app/apps/teacher-portal/.next/standalone ./
COPY --from=builder --chown=nextjs:nodejs /app/apps/teacher-portal/.next/static ./.next/static
COPY --from=builder --chown=nextjs:nodejs /app/apps/teacher-portal/public ./public

USER nextjs
EXPOSE 4000

# 健康检查（/api/health liveness 端点）
HEALTHCHECK --interval=30s --timeout=5s --start-period=20s --retries=3 \
  CMD wget --quiet --spider http://localhost:4000/api/health || exit 1

# standalone 模式下直接用 node server.js 启动（已自包含所有依赖）
WORKDIR /app/apps/teacher-portal
CMD ["node", "server.js"]
