"""
智能体模型
"""
from sqlalchemy import Column, String, Text, Integer, DateTime, JSON, ForeignKey, func
from sqlalchemy.dialects.mysql import CHAR
from sqlalchemy.orm import relationship
from app.core.database import Base
import uuid


class Agent(Base):
    """智能体表"""
    __tablename__ = "agents"

    id = Column(CHAR(36), primary_key=True, default=lambda: str(uuid.uuid4()), comment="智能体ID")
    name = Column(String(100), nullable=False, comment="智能体名称")
    description = Column(Text, comment="描述")
    workflow_config = Column(JSON, nullable=False, comment="工作流配置")
    budget_config = Column(
        JSON,
        nullable=True,
        comment="执行预算：max_steps/max_llm_invocations/max_tool_calls（可选，覆盖全局默认）",
    )
    version = Column(Integer, default=1, comment="版本号")
    status = Column(String(20), default="draft", comment="状态: draft/published/running/stopped")
    user_id = Column(CHAR(36), ForeignKey("users.id"), comment="创建者ID")
    created_at = Column(DateTime, default=func.now(), comment="创建时间")
    updated_at = Column(DateTime, default=func.now(), onupdate=func.now(), comment="更新时间")

    # 关系
    user = relationship("User", backref="agents")

    def __repr__(self):
        return f"<Agent(id={self.id}, name={self.name})>"


class AgentExtension(Base):
    """Agent 自主扩展记录表 — 用于 extension_log 工具"""
    __tablename__ = "agent_extensions"

    id = Column(CHAR(36), primary_key=True, default=lambda: str(uuid.uuid4()), comment="扩展记录ID")
    extension_type = Column(String(50), nullable=False, comment="扩展类型: agent_created/tool_registered/code_tool_created")
    name = Column(String(100), nullable=False, comment="创建的Agent或工具名称")
    reason = Column(Text, comment="创建原因（为什么需要扩展）")
    detail = Column(JSON, comment="扩展详情（参数、结果等）")
    success_rating = Column(String(20), comment="效果评价: success/partial/failed")
    note = Column(Text, comment="反馈备注")
    user_id = Column(CHAR(36), ForeignKey("users.id"), nullable=True, comment="创建者ID")
    created_at = Column(DateTime, default=func.now(), comment="创建时间")

    def __repr__(self):
        return f"<AgentExtension(id={self.id}, type={self.extension_type}, name={self.name})>"


class GlobalKnowledge(Base):
    """Agent 间知识共享表 — 跨 Agent 的全局知识池"""
    __tablename__ = "global_knowledge"

    id = Column(CHAR(36), primary_key=True, default=lambda: str(uuid.uuid4()), comment="知识ID")
    content = Column(Text, nullable=False, comment="知识内容摘要")
    embedding = Column(Text, nullable=True, comment="内容 embedding（JSON 序列化）")
    source_agent_id = Column(CHAR(36), nullable=True, comment="来源 Agent ID")
    source_user_id = Column(CHAR(36), nullable=True, comment="来源用户 ID")
    tags = Column(JSON, nullable=True, comment="分类标签")
    scope_kind = Column(String(50), default="agent", comment="作用域类型")
    scope_id = Column(String(100), default="", comment="作用域 ID")
    created_at = Column(DateTime, default=func.now(), comment="创建时间")

    def __repr__(self):
        return f"<GlobalKnowledge(id={self.id}, source_agent={self.source_agent_id})>"