#学生基本信息 周学灵
from database import Base
from sqlalchemy import Column, Integer, String, Date, ForeignKey
from sqlalchemy.orm import relationship


class Student(Base):
    __tablename__ = 'wl_student'
    # ---------- 内部主键（隐藏，不对外）----------
    stu_id = Column(Integer, primary_key=True, autoincrement=True, comment='内部主键')
    # ---------- 业务学号（对外，按规则生成）----------
    stu_no = Column(String(20), unique=True, nullable=False, index=True, comment='学号')
    class_id = Column(Integer, ForeignKey('class_info.class_id'), nullable=True, comment='班级ID')
    stu_name = Column(String(30), nullable=True, comment='学生姓名')
    native_place = Column(String(50), nullable=True, comment='籍贯')
    graduate_school=Column(String(128), nullable=True, comment='毕业学校')
    major= Column(String(64), nullable=True, comment='专业')
    in_time= Column(Date, nullable=True, comment='入学时间')
    out_time= Column(Date, nullable=True, comment='毕业时间')
    edu= Column(String(32), nullable=True, comment='学历')
    advisor_id = Column(Integer, ForeignKey('advisor.adv_id'), nullable=True, comment='顾问ID')
    stu_age = Column(Integer, nullable=True, comment='年龄')
    stu_gender = Column(String(8), nullable=True, comment='性别')

    class_ = relationship("Class_", back_populates="students")
    scores=relationship("Score",back_populates="student")
    emp = relationship("Emp", back_populates="student")
    # advisor = relationship("Advisor", back_populates="students")

    is_deleted = Column(Integer, default=0, comment='逻辑删除: 0正常 1删除')
    def __repr__(self):
        return f"<Student(id={self.stu_id}, name='{self.stu_name}')>"