"""LLM 设置(单行,owner 可编辑)。

字段对应:
  - 排版/分类/点评提示词(用户可改)
  - 插图尺寸 + prompt 模板(用户可改)
  - 总开关 enabled
  - 模型名(默认指向 Agnes,但可改成任意 OpenAI 兼容端点)
"""
from __future__ import annotations

from datetime import datetime

from sqlalchemy import Boolean, DateTime, Integer, String, Text, func
from sqlalchemy.dialects.postgresql import JSONB
from sqlalchemy.orm import Mapped, mapped_column

from app.database import Base


class LlmSetting(Base):
    __tablename__ = "llm_settings"

    # 永远只有一行:id=1
    id: Mapped[int] = mapped_column(Integer, primary_key=True, default=1)

    # === 提示词 ===
    format_prompt: Mapped[str | None] = mapped_column(Text)
    classify_prompt: Mapped[str | None] = mapped_column(Text)
    commentary_prompt: Mapped[str | None] = mapped_column(Text)
    image_prompt_template: Mapped[str | None] = mapped_column(Text)

    # === 全局屏蔽分类标签(如 ["体育", "娱乐"])===
    # 与 sources.blocklist_tags 合并去重后注入 classify prompt;
    # 命中则删文章(drop)
    blocklist_tags: Mapped[list[str]] = mapped_column(
        JSONB, nullable=False, default=list, server_default="[]"
    )

    # === 插图参数 ===
    image_size: Mapped[str] = mapped_column(String(16), default="768x512", nullable=False)

    # === 模型 ===
    chat_model: Mapped[str] = mapped_column(String(64), default="agnes-2.0-flash", nullable=False)
    image_model: Mapped[str] = mapped_column(String(64), default="agnes-image-2.1-flash", nullable=False)

    # === 限速 ===
    interval_sec: Mapped[float] = mapped_column(default=2.0, nullable=False)

    # === 总开关 ===
    enabled: Mapped[bool] = mapped_column(Boolean, default=True, nullable=False)

    # === 时间 ===
    updated_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True), server_default=func.now(), onupdate=func.now(), nullable=False
    )

    def __repr__(self) -> str:
        return f"<LlmSetting id={self.id} enabled={self.enabled}>"