import datetime
from flask_login import UserMixin
from werkzeug.security import generate_password_hash, check_password_hash
from applications.extensions import db, ma
from marshmallow import fields
from applications.models import Dept


class User(db.Model, UserMixin):
    __tablename__ = 'admin_user'
    id = db.Column(db.Integer, primary_key=True, autoincrement=True, comment='用户ID')
    username = db.Column(db.String(20), comment='用户名')
    realname = db.Column(db.String(20), comment='真实名字')
    avatar = db.Column(db.String(255), comment='头像', default="/static/admin/admin/images/avatar.jpg")
    remark = db.Column(db.String(255), comment='备注')
    password_hash = db.Column(db.String(128), 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_at = db.Column(db.DateTime, default=datetime.datetime.now, comment='创建时间')
    update_at = db.Column(db.DateTime, default=datetime.datetime.now, onupdate=datetime.datetime.now, comment='创建时间')
    role = db.relationship('Role', secondary="admin_user_role", backref=db.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)


# 用户models的序列化类
class UserSchema(ma.Schema):
    id = fields.Integer()
    username = fields.Str()
    realname = fields.Str()
    enable = fields.Integer()
    create_at = fields.DateTime()
    update_at = fields.DateTime()
    dept = fields.Method("get_dept")

    def get_dept(self, obj):
        if obj.dept_id != None:
            return Dept.query.filter_by(id=obj.dept_id).first().dept_name
        else:
            return None