# ============================================
# 3D家具安装展示系统 - 优化版Dockerfile
# 优先使用本地缓存，支持离线构建
# ============================================

# ============================================
# 阶段 1: 基础镜像
# ============================================
FROM node:18-alpine AS base

# 使用阿里云镜像源加速（中国网络优化）
RUN sed -i 's/dl-cdn.alpinelinux.org/mirrors.aliyun.com/g' /etc/apk/repositories

# 安装基础运行时依赖
RUN apk add --no-cache \
    libc6-compat \
    ca-certificates \
    openssl3

# ============================================
# 阶段 2: 依赖安装 (deps)
# ============================================
FROM base AS deps

# 安装构建时依赖
RUN apk add --no-cache --virtual .build-deps \
    python3 \
    make \
    g++ \
    pkgconfig \
    openssl-dev

WORKDIR /app

# 复制package文件
COPY package.json package-lock.json* ./

# 检查是否有本地缓存的node_modules
COPY cache/node_modules* ./cache_node_modules/ 2>/dev/null || true

# 配置npm使用国内镜像源
RUN npm config set registry https://registry.npmmirror.com/

# 智能安装依赖：优先使用缓存，然后网络安装
RUN set -ex && \
    # 如果有本地缓存，先复制关键包
    if [ -d "./cache_node_modules" ]; then \
        echo "🔄 发现本地依赖缓存，正在复制..." && \
        mkdir -p node_modules && \
        # 复制关键包
        for pkg in "@prisma" ".prisma" "prisma" "sharp" "next" "react" "react-dom" "@aws-sdk" "three" "gsap"; do \
            if [ -d "./cache_node_modules/$pkg" ]; then \
                echo "📦 复制缓存包: $pkg" && \
                cp -r "./cache_node_modules/$pkg" "./node_modules/" || true; \
            fi; \
        done; \
    fi && \
    # 执行npm install（会跳过已存在的包）
    echo "📥 安装剩余依赖..." && \
    npm ci --prefer-offline --no-audit || npm install --prefer-offline --no-audit

# 清理构建依赖
RUN apk del .build-deps && \
    npm config delete registry && \
    rm -rf ./cache_node_modules

# ============================================
# 阶段 3: 构建应用 (builder)
# ============================================
FROM base AS builder

# 构建参数
ARG DATABASE_URL=""
ARG NEXTAUTH_URL=""
ARG APP_PUBLIC_URL=""

# 环境变量
ENV DATABASE_URL=${DATABASE_URL}
ENV NEXTAUTH_URL=${NEXTAUTH_URL}
ENV APP_PUBLIC_URL=${APP_PUBLIC_URL}
ENV NEXT_TELEMETRY_DISABLED=1
ENV NODE_ENV=production

WORKDIR /app

# 安装OpenSSL（Prisma需要）
RUN apk add --no-cache openssl3

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

# 复制应用源代码
COPY . .

# 复制本地Prisma引擎缓存（如果存在）
COPY cache/prisma-engines* ./prisma/engine-cache/ 2>/dev/null || true

# 配置Prisma引擎缓存路径
ENV PRISMA_ENGINES_CHECKSUM_IGNORE_MISSING=1
ENV PRISMA_ENGINE_CACHE_PATH=/app/prisma/engine-cache/libquery_engine-linux-musl-openssl-3.0.x.so.node
ENV PRISMA_SCHEMA_ENGINE_CACHE_PATH=/app/prisma/engine-cache/schema-engine-linux-musl-openssl-3.0.x

# 智能生成Prisma Client：优先使用本地引擎
RUN set -ex && \
    # 检查本地引擎缓存
    if [ -f "${PRISMA_ENGINE_CACHE_PATH}" ]; then \
        echo "🔧 使用本地Prisma查询引擎缓存" && \
        export PRISMA_QUERY_ENGINE_LIBRARY="${PRISMA_ENGINE_CACHE_PATH}" && \
        export PRISMA_CLIENT_ENGINE_TYPE=library && \
        export PRISMA_CLI_QUERY_ENGINE_TYPE=library; \
    else \
        echo "⚠️ 本地Prisma引擎缓存不可用，将在线下载"; \
    fi && \
    if [ -f "${PRISMA_SCHEMA_ENGINE_CACHE_PATH}" ]; then \
        echo "🔧 使用本地Prisma schema引擎缓存" && \
        export PRISMA_SCHEMA_ENGINE_BINARY="${PRISMA_SCHEMA_ENGINE_CACHE_PATH}"; \
    fi && \
    # 生成Prisma Client
    if npx prisma generate; then \
        echo "✅ Prisma Client生成成功"; \
    else \
        echo "⚠️ 官方源失败，尝试镜像源..." && \
        PRISMA_ENGINES_MIRROR="https://registry.npmmirror.com/-/binary/prisma/" npx prisma generate; \
    fi

# 构建Next.js应用
RUN set -ex && \
    echo "🏗️ 构建Next.js应用..." && \
    npm run build && \
    echo "✅ 构建完成"

# 验证构建产物
RUN if [ ! -f ".next/standalone/server.js" ]; then \
        echo "❌ standalone输出未生成，请检查next.config.js配置" >&2 && \
        exit 1; \
    fi

# ============================================
# 阶段 4: 生产运行 (runner)
# ============================================
FROM base AS runner

WORKDIR /app

# 生产环境变量
ENV NODE_ENV=production
ENV NEXT_TELEMETRY_DISABLED=1
ENV PORT=3000
ENV HOSTNAME="0.0.0.0"

# 安装运行时依赖
RUN apk add --no-cache \
    # 字体支持（3D渲染可能需要）
    fontconfig \
    ttf-dejavu \
    # 图像处理（Sharp需要）
    vips-dev

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

# 复制构建产物
COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static

# 复制必要文件
COPY --from=builder --chown=nextjs:nodejs /app/public ./public
COPY --from=builder --chown=nextjs:nodejs /app/prisma ./prisma

# 复制关键运行时模块
COPY --from=builder --chown=nextjs:nodejs /app/node_modules/.prisma ./node_modules/.prisma
COPY --from=builder --chown=nextjs:nodejs /app/node_modules/@prisma ./node_modules/@prisma
COPY --from=builder --chown=nextjs:nodejs /app/node_modules/prisma ./node_modules/prisma
COPY --from=builder --chown=nextjs:nodejs /app/node_modules/.bin ./node_modules/.bin

# 创建上传目录
RUN mkdir -p /app/uploads && \
    chown -R nextjs:nodejs /app/uploads && \
    chmod -R 755 /app/uploads

# 切换到非root用户
USER nextjs

EXPOSE 3000

# 健康检查
HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
    CMD curl -f http://localhost:3000/api/health || exit 1

# 启动应用
CMD ["node", "server.js"]