from sqlalchemy import Column, String, Enum, ForeignKey
from sqlalchemy.orm import relationship
from sqlalchemy.dialects.mysql import LONGTEXT

from BM02_指标仓库.Schemas.IndexStoreSchemas import NatureEnum
from BM02_指标仓库.DataBase import Base


class Indicator(Base):
    __tablename__ = "indicator"

    iid = Column(String(32), primary_key=True)
    ename = Column(String(255), index=True)
    cname = Column(String(255), index=True)
    description = Column(LONGTEXT)
    nature = Column(Enum(NatureEnum, values_callable=lambda obj: [e.value for e in obj]))
    category_id = Column(String(12), ForeignKey("indicator_category.id"))

    category = relationship("IndicatorCategory", backref="indicator")
    parameters = relationship("Parameters", backref="indicator", cascade="all, delete-orphan")

    def to_dict(self):
        _dict = {c.name: getattr(self, c.name, None) for c in self.__table__.columns}
        _dict.update({"category": self.category.__str__()})
        _dict.update({"parameters": [param.to_dict() for param in list(self.parameters)]})
        return _dict


class Parameters(Base):
    __tablename__ = "parameters"

    pid = Column(String(32), primary_key=True)
    ename = Column(String(255))
    cname = Column(String(255))
    description = Column(LONGTEXT)
    path = Column(String(255))
    _iid = Column(String(32), ForeignKey("indicator.iid", ondelete="CASCADE"))

    def to_dict(self):
        _dict = {c.name: getattr(self, c.name, None) for c in self.__table__.columns}
        return _dict


class IndicatorCategory(Base):
    __tablename__ = "indicator_category"

    id = Column(String(12), primary_key=True)
    title = Column(String(16), unique=True, index=True)

    def __repr__(self):
        return self.title

    def to_kv(self):
        _dict = dict()
        _dict.update({"key": self.title})
        _dict.update({"value": self.id})
        return _dict