from flask_login import UserMixin
from werkzeug.security import generate_password_hash, check_password_hash
from ..extensions import db
import datetime

class User(db.Model, UserMixin):
    __tablename__ = 'user'
    id = db.Column(db.Integer, primary_key=True, autoincrement=True, comment='用户ID')
    username = db.Column(db.String(32), comment='用户名')
    realname = db.Column(db.String(32), comment='真实名字')
    avatar = db.Column(db.String(255), comment='头像', default='/static/user/avatar.jpg')
    password_hash = db.Column(db.String(255), comment='哈希密码')
    enable = db.Column(db.Integer, default=0, comment='启用')
    dept_id = db.Column(db.Integer, comment='部门id')
    create_time = db.Column(db.DateTime, default=datetime.datetime.now, comment='创建时间')
    update_time = db.Column(db.DateTime, default=datetime.datetime.now, onupdate=datetime.datetime.now, comment='修改时间')
    role = db.relationship('Role', secondary='user_role', backref=db.backref('user'),lazy='dynamic')
    question_blank = db.relationship('QuestionBlank', backref='user', lazy='dynamic')

    def set_password(self, password):
        self.password_hash = generate_password_hash(password)

    def validate_password(self, password):
        return check_password_hash(self.password_hash, password)