# 多阶段构建：整合前端和后端到单个容器

# ==================== 阶段1: 构建前端 ====================
FROM node:22-alpine AS frontend-builder

# 安装pnpm
RUN npm install -g pnpm

# 设置工作目录
WORKDIR /app/web

# 复制前端依赖文件
COPY web/package.json web/pnpm-lock.yaml* ./

# 安装依赖
RUN pnpm install --frozen-lockfile

# 复制前端源代码
COPY web/src ./src
COPY web/public ./public
COPY web/next.config.js ./
COPY web/tailwind.config.ts ./
COPY web/postcss.config.js ./
COPY web/tsconfig.json ./
COPY web/next-env.d.ts ./

# 构建前端应用
RUN pnpm build

# ==================== 阶段2: 准备后端 ====================
FROM python:3.12-slim AS backend-builder

# 设置工作目录
WORKDIR /app

# 设置环境变量
ENV PYTHONPATH=/app
ENV PYTHONUNBUFFERED=1
ENV PYTHONDONTWRITEBYTECODE=1
ENV TZ=Asia/Shanghai
ENV UV_HTTP_TIMEOUT=600

# 安装系统依赖
RUN apt-get update && apt-get install -y \
    curl \
    gcc \
    g++ \
    libpq-dev \
    postgresql-client \
    poppler-utils \
    libmagic1 \
    && rm -rf /var/lib/apt/lists/*

# 设置时区
RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone

# 配置 pip 使用国内镜像源
RUN pip config set global.index-url https://pypi.tuna.tsinghua.edu.cn/simple

# 安装uv
RUN pip install uv

# 复制后端依赖文件（包括README.md，因为pyproject.toml引用了它）
COPY backend/pyproject.toml backend/uv.lock ./
COPY backend/README.md* ./

# 安装Python依赖
RUN UV_HTTP_TIMEOUT=600 uv sync --frozen

# ==================== 阶段3: 最终镜像 ====================
FROM python:3.12-slim

# 设置工作目录
WORKDIR /app

# 设置环境变量
ENV PYTHONPATH=/app
ENV PYTHONUNBUFFERED=1
ENV PYTHONDONTWRITEBYTECODE=1
ENV TZ=Asia/Shanghai
ENV NODE_ENV=production
ENV PORT=8001
ENV HOSTNAME=0.0.0.0

# 安装系统依赖（包括 Node.js 用于运行前端）
RUN apt-get update && apt-get install -y \
    curl \
    gcc \
    g++ \
    libpq-dev \
    postgresql-client \
    poppler-utils \
    libmagic1 \
    nodejs \
    npm \
    supervisor \
    && rm -rf /var/lib/apt/lists/*

# 设置时区
RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone

# 安装uv
RUN pip config set global.index-url https://pypi.tuna.tsinghua.edu.cn/simple && \
    pip install uv

# 从后端构建阶段复制Python虚拟环境
# uv 会在 /app/.venv 创建虚拟环境
COPY --from=backend-builder /app/.venv /app/.venv

# 复制后端代码和依赖文件
COPY backend/pyproject.toml backend/uv.lock ./
COPY backend/src ./src
COPY backend/main.py ./
COPY backend/migrations ./migrations
COPY backend/scripts ./scripts

# 确保使用虚拟环境中的Python
ENV PATH="/app/.venv/bin:$PATH"

# 从前端构建阶段复制构建产物
COPY --from=frontend-builder /app/web/.next/standalone ./web
COPY --from=frontend-builder /app/web/.next/static ./web/.next/static
COPY --from=frontend-builder /app/web/public ./web/public

# 创建必要的目录
RUN mkdir -p /app/data /app/vector_store /app/uploads /app/logs /app/generated_images && \
    chmod 755 /app/data /app/vector_store /app/uploads /app/logs /app/generated_images

# 创建supervisor配置文件
RUN mkdir -p /etc/supervisor/conf.d
COPY docker/supervisord.conf /etc/supervisor/conf.d/supervisord.conf

# 创建启动脚本
COPY docker/start.sh /app/start.sh
RUN chmod +x /app/start.sh

# 暴露端口
EXPOSE 8000 8001

# 健康检查
HEALTHCHECK --interval=30s --timeout=10s --start-period=10s --retries=3 \
    CMD curl -f http://localhost:8000/health && curl -f http://localhost:8001 || exit 1

# 启动命令
CMD ["/app/start.sh"]