from sqlalchemy import Column, String, Text, Boolean, JSON, ForeignKey, Float, Integer, DateTime
from sqlalchemy.orm import relationship
from app.models.base import BaseModel


class Skill(BaseModel):
    __tablename__ = "skills"

    name = Column(String(100), nullable=False, unique=True, index=True)
    description = Column(Text, nullable=True)  # 供 LLM 理解用途
    instructions = Column(Text, nullable=False)  # Agent 执行时的指令模板
    agent_type = Column(String(50), nullable=False, index=True)  # master/schedule_planner/executor/librarian/analyst
    tools = Column(JSON, default=list)  # 引用的工具名称列表
    required_context = Column(JSON, default=list)  # 需要的前置数据
    output_format = Column(Text, nullable=True)  # 输出格式要求
    visibility = Column(String(20), default="private")  # private/team/market
    is_builtin = Column(Boolean, default=False, nullable=False)
    team_id = Column(String(36), ForeignKey("users.id"), nullable=True)
    is_active = Column(Boolean, default=True)
    status = Column(String(20), default="active", nullable=False, index=True)  # candidate/shadow/active/deprecated/retired
    scope = Column(JSON, default=list, nullable=False)
    effectiveness = Column(Float, default=0.0, nullable=False)
    review_after = Column(DateTime, nullable=True)
    candidate_count = Column(Integer, default=0, nullable=False)
    candidate_source_hashes = Column(JSON, default=list, nullable=False)
    activation_count = Column(Integer, default=0, nullable=False)
    last_activated_at = Column(DateTime, nullable=True)
    owner_id = Column(String(36), ForeignKey("users.id"), nullable=False)

    owner = relationship("User", foreign_keys=[owner_id])
    team = relationship("User", foreign_keys=[team_id])