FROM python:3.11-slim-bookworm AS builder

COPY --from=ghcr.io/astral-sh/uv:0.12.17 /uv /usr/local/bin/uv

WORKDIR /app

ENV UV_PYTHON_DOWNLOADS=never

COPY pyproject.toml uv.lock ./
RUN uv sync --locked --no-dev --no-install-project

# 会话历史的预算按 o200k 计数；编码表在构建时下载好，运行时不用再联网
ENV TIKTOKEN_CACHE_DIR=/app/.tiktoken
RUN .venv/bin/python -c "import tiktoken; tiktoken.get_encoding('o200k_base')"

FROM python:3.11-slim-bookworm

# PyArrow、DuckDB 的 Linux wheels 需要 C++ 运行库
RUN apt-get update \
    && apt-get install -y --no-install-recommends libstdc++6 \
    && rm -rf /var/lib/apt/lists/*

ENV PYTHONDONTWRITEBYTECODE=1 \
    PYTHONUNBUFFERED=1 \
    PATH="/app/.venv/bin:$PATH" \
    TIKTOKEN_CACHE_DIR=/app/.tiktoken \
    UVICORN_HOST=0.0.0.0 \
    UVICORN_PORT=8000

WORKDIR /app

COPY --from=builder /app/.venv ./.venv
COPY --from=builder /app/.tiktoken ./.tiktoken
COPY app ./app
COPY mcp_servers ./mcp_servers
COPY mcp_servers.json ./
COPY skills ./skills
COPY scripts/seed_materials.py ./scripts/seed_materials.py

EXPOSE 8000

HEALTHCHECK --interval=10s --timeout=5s --start-period=30s --retries=3 \
    CMD python -c "import os, urllib.request; urllib.request.urlopen('http://127.0.0.1:' + os.environ['UVICORN_PORT'] + '/api/files/limits', timeout=3).close()" || exit 1

CMD ["python", "-m", "uvicorn", "app.main:app", "--workers", "1"]