"""团队知识库模型"""
from sqlalchemy import Column, Integer, String, Text, Boolean, DateTime, ForeignKey
from sqlalchemy.sql import func
from database import Base


class KbCategory(Base):
    """知识库分类"""
    __tablename__ = "kb_categories"

    id = Column(Integer, primary_key=True, index=True)
    name = Column(String(100), nullable=False, unique=True)
    icon = Column(String(500), default="")
    sort_order = Column(Integer, default=0)
    is_active = Column(Boolean, default=True, nullable=False)
    created_at = Column(DateTime(timezone=True), server_default=func.now())


class KbItem(Base):
    """知识库条目（关联帖子）"""
    __tablename__ = "kb_items"

    id = Column(Integer, primary_key=True, index=True)
    category_id = Column(Integer, ForeignKey("kb_categories.id"), nullable=True, index=True)
    post_id = Column(Integer, ForeignKey("posts.id"), nullable=False, index=True)
    title = Column(String(200), nullable=False)
    summary = Column(Text, default="")
    sort_order = Column(Integer, default=0)
    is_active = Column(Boolean, default=True, nullable=False)
    added_by = Column(Integer, ForeignKey("users.id"), nullable=True)
    created_at = Column(DateTime(timezone=True), server_default=func.now())


class KbAccessLog(Base):
    """知识库访问日志"""
    __tablename__ = "kb_access_logs"

    id = Column(Integer, primary_key=True, index=True)
    user_id = Column(Integer, ForeignKey("users.id"), nullable=True)
    action = Column(String(20), default="view")  # view / search / ai_chat
    query = Column(Text, default="")
    created_at = Column(DateTime(timezone=True), server_default=func.now())