# model/users.py
# 本文件定义 User 表的结构，映射到 MySQL 数据库

from sqlalchemy import  Column, Integer, String, Float, ForeignKey,DateTime,Date
from sqlalchemy.orm import declarative_base,relationship
from sqlalchemy.sql import func
from sqlalchemy_fastapi_demo_1.database import Base


# model 类，对应 student表
class Student(Base):
    __tablename__ = "student"    #指定表名

    stu_id = Column(Integer, primary_key = True)   #主键，学生编号
    stu_name = Column(String(10),nullable = False)  #学生名字，非空约束
    native_place = Column(String(30),nullable = False)      #籍贯，非空
    graduate_school = Column(String(50),nullable = False)   #毕业院校
    major = Column(String(20),nullable = False)   #专业
    enroll_time = Column(Date, comment = "入学时间",nullable = False)
    graduate_time = Column(Date, comment = "毕业时间",nullable = False)
    education = Column(String(10),nullable = False)   #学历，非空
    age = Column(Integer,nullable = False)    #年龄
    gender = Column(String(10),nullable = False)  #性别
    # employment_open_time = Column(Date,nullable = False)  #简历开放时间
    # company_name = Column(String(100),nullable = False)   #公司名称
    # salary = Column(Float,nullable = False)    #薪资
    # # 逻辑删除标记
    is_deleted = Column(Integer, nullable=False,default=0, comment="0正常；1逻辑删除")
    # 外键：关联 C_lass 的 id
    class_id = Column(Integer, ForeignKey("c_lass.class_id"), nullable=False)
    # 关系属性：关联 Classinfo
    my_class = relationship("Classinfo", back_populates="students")
    # 外键：关联Advisor的id
    advisor_id = Column(Integer,ForeignKey("advisor.advisor_id"),nullable=False)
    # 关系属性：关联Advisor
    advisor = relationship("Advisor", back_populates="students")
    # 关系属性：关联成绩（Score.student 的对端）
    score = relationship("Score", back_populates="student")