"""Модели базы знаний."""
from datetime import datetime

from sqlalchemy import DateTime, ForeignKey, String, Text, func
from sqlalchemy.orm import Mapped, mapped_column

from app.db.session import Base


class KnowledgeCategory(Base):
    __tablename__ = "knowledge_categories"

    id: Mapped[int] = mapped_column(primary_key=True)
    name: Mapped[str] = mapped_column(String(200), unique=True)


class KnowledgeArticle(Base):
    __tablename__ = "knowledge_articles"

    id: Mapped[int] = mapped_column(primary_key=True)
    title: Mapped[str] = mapped_column(String(300))
    body: Mapped[str] = mapped_column(Text)
    category_id: Mapped[int | None] = mapped_column(ForeignKey("knowledge_categories.id"))
    created_by: Mapped[int | None] = mapped_column(ForeignKey("users.id"))
    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now())
    updated_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True), server_default=func.now(), onupdate=func.now()
    )