# ============================================================
# Worker Dockerfile - 专门用于 Celery Worker
# 优化：依赖分层缓存，基础大包和业务依赖分开
# ============================================================

# 基础镜像：Python 3.12 + ffmpeg
FROM xiaoxia-registry.cn-hangzhou.cr.aliyuncs.com/xiaoxiakeji/base/python:3.12-slim-bookworm

# 使用阿里云镜像加速
RUN sed -i 's|deb.debian.org|mirrors.aliyun.com|g' /etc/apt/sources.list.d/debian.sources 2>/dev/null || \
    sed -i 's|deb.debian.org|mirrors.aliyun.com|g' /etc/apt/sources.list 2>/dev/null || true

# 安装系统依赖
RUN apt-get update && apt-get install -y --no-install-recommends \
    ffmpeg \
    libsm6 \
    libxext6 \
    libgl1-mesa-glx \
    && rm -rf /var/lib/apt/lists/*

# 设置工作目录
WORKDIR /app

# ---- 依赖分层：基础依赖（变化少，缓存命中率高）----
COPY requirements-base.txt /tmp/requirements-base.txt

RUN python -m venv /opt/venv \
    && /opt/venv/bin/pip install --no-cache-dir -i https://mirrors.aliyun.com/pypi/simple/ --trusted-host mirrors.aliyun.com -r /tmp/requirements-base.txt \
    && rm /tmp/requirements-base.txt

# ---- 依赖分层：Worker 专属大包（视频处理，变化极少）----
COPY requirements-worker.txt /tmp/requirements-worker.txt

RUN /opt/venv/bin/pip install --no-cache-dir -i https://mirrors.aliyun.com/pypi/simple/ --trusted-host mirrors.aliyun.com -r /tmp/requirements-worker.txt \
    && rm /tmp/requirements-worker.txt

# ---- 依赖分层：业务依赖（变化频繁）----
COPY requirements.txt /tmp/requirements.txt

RUN /opt/venv/bin/pip install --no-cache-dir -i https://mirrors.aliyun.com/pypi/simple/ --trusted-host mirrors.aliyun.com -r /tmp/requirements.txt \
    && rm /tmp/requirements.txt

# 复制应用代码
COPY apps/worker/ /app/apps/worker/
COPY apps/api/app/config.py /app/apps/api/app/config.py
COPY apps/api/app/core/ /app/apps/api/app/core/
COPY packages/ /app/packages/
COPY alembic.ini /app/alembic.ini
COPY migrations/ /app/migrations/

# 设置 Python 路径
ENV PATH="/opt/venv/bin:$PATH"
ENV PYTHONPATH=/app
ENV PYTHONUNBUFFERED=1

# 创建非 root 用户运行 Worker
RUN groupadd -r celery && useradd -r -g celery -d /app -s /sbin/nologin celery \
    && mkdir -p /app/generated && chown celery:celery /app/generated

USER celery

# Worker 入口点
WORKDIR /app/apps/worker
CMD ["celery", "-A", "worker_app.celery_app", "worker", "--loglevel=info", "--concurrency=2"]
