# model/user.py
# 用户表：用于 JWT 登录认证与 RBAC 角色控制（建表语句中缺失，此处补充）
from datetime import datetime

from sqlalchemy import Column, Integer, String, DateTime, ForeignKey

from database import Base


class User(Base):
    __tablename__ = "user"

    user_id = Column(Integer, primary_key=True, autoincrement=True)
    username = Column(String(50), nullable=False, unique=True, comment="登录名")
    password_hash = Column(String(200), nullable=False, comment="密码哈希(PBKDF2)")
    role = Column(String(20), nullable=False, comment="角色: admin/teacher/student")
    # 关联业务身份：student 角色账号绑定学号，teacher 角色账号绑定教师工号（便于资源归属校验）
    stu_id = Column(Integer, ForeignKey("student.stu_id"), nullable=True, comment="学生角色的学号")
    teacher_id = Column(Integer, ForeignKey("teacher.teacher_id"), nullable=True, comment="教师角色的工号")
    is_deleted = Column(Integer, default=0, nullable=False, comment="逻辑删除: 0正常 1删除")
    create_time = Column(DateTime, default=datetime.now, comment="创建时间")

    def __repr__(self):
        return f"<User(user_id={self.user_id}, username='{self.username}', role='{self.role}')>"