# ====================================
# 后端基础镜像 - Base Serv
# 包含：JRE + Python + 系统工具 + 爬虫依赖
# 用途：作为后端服务镜像的基础，避免每次都安装依赖
# ====================================
FROM eclipse-temurin:21-jre

# 设置环境变量
ENV LANG=C.UTF-8 \
    LC_ALL=C.UTF-8 \
    TZ=Asia/Shanghai \
    PYTHONUNBUFFERED=1 \
    PYTHONIOENCODING=UTF-8 \
    PIP_INDEX_URL=https://pypi.tuna.tsinghua.edu.cn/simple \
    PIP_TRUSTED_HOST=pypi.tuna.tsinghua.edu.cn

# 安装系统依赖和工具
RUN apt-get update && \
    DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends \
        # Python环境
        python3 \
        python3-pip \
        python3-venv \
        python3-dev \
        # 编译工具
        build-essential \
        # 网络和诊断工具
        netcat-traditional \
        curl \
        wget \
        dnsutils \
        iputils-ping \
        # 系统工具
        procps \
        htop \
        vim \
        less \
        # 数据库客户端
        default-mysql-client \
        # 字体和图形库
        fonts-liberation \
        fonts-noto-color-emoji \
        fonts-noto-cjk \
        # Chrome依赖
        libxss1 \
        libx11-xcb1 \
        libxcb1 \
        libxcomposite1 \
        libxcursor1 \
        libxdamage1 \
        libxi6 \
        libxtst6 \
        libnss3 \
        libcups2 \
        libxrandr2 \
        libasound2t64 \
        libatk1.0-0 \
        libatk-bridge2.0-0 \
        libpangocairo-1.0-0 \
        libgtk-3-0 \
        # 图片处理
        libjpeg-dev \
        zlib1g-dev \
        libpng-dev \
        # 其他依赖
        libffi-dev \
        libssl-dev \
    && apt-get clean \
    && rm -rf /var/lib/apt/lists/* \
    && ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime \
    && echo "Asia/Shanghai" > /etc/timezone

# 设置Python3为默认Python
RUN update-alternatives --install /usr/bin/python python /usr/bin/python3 1 \
    && update-alternatives --install /usr/bin/pip pip /usr/bin/pip3 1

WORKDIR /app

# 配置pip使用清华源
RUN mkdir -p /etc/pip && \
    echo "[global]" > /etc/pip/pip.conf && \
    echo "index-url = https://pypi.tuna.tsinghua.edu.cn/simple" >> /etc/pip/pip.conf && \
    echo "trusted-host = pypi.tuna.tsinghua.edu.cn" >> /etc/pip/pip.conf

# 安装常用Python工具和爬虫依赖
COPY schoolNewsCrawler/requirements.txt /tmp/requirements.txt

RUN echo "========================================" && \
    echo "安装Python爬虫依赖到基础镜像" && \
    echo "========================================" && \
    # 直接安装依赖（使用系统pip，不升级以避免破坏系统）
    python3 -m pip install --no-cache-dir --break-system-packages -r /tmp/requirements.txt && \
    # 清理缓存
    python3 -m pip cache purge && \
    # 验证安装
    echo "" && \
    echo "✅ 爬虫依赖安装完成" && \
    python3 -m pip list | grep -E "(beautifulsoup4|crawl4ai|selenium|pydantic|requests|loguru)" && \
    # 清理临时文件
    rm -f /tmp/requirements.txt

# 创建应用目录结构
RUN mkdir -p /app/config /app/logs /app/uploads /app/crawler

# 健康检查
HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
    CMD curl -f http://localhost:8080/actuator/health || exit 1

# 镜像元数据
LABEL maintainer="School News Team" \
      description="Base image for school-news backend service with Python dependencies" \
      version="1.0"

# 暴露端口（文档用途）
EXPOSE 8081

# 默认命令（会被子镜像覆盖）
CMD ["echo", "This is base image, please use school-news-serv image"]