models.py

import time
from flask_sqlalchemy import SQLAlchemy
from authlib.integrations.sqla_oauth2 import (
    OAuth2ClientMixin,
    OAuth2AuthorizationCodeMixin,
    OAuth2TokenMixin,
)
from flask_login import UserMixin

db = SQLAlchemy()

logged_users = []


class User(db.Model, UserMixin):


    
    id = db.Column(db.Integer, primary_key=True)
    username = db.Column(db.String(40), unique=True)
    password = db.Column(db.String(128))

    def __str__(self):
        return self.username

    def get_user_id(self):
        return self.id

    def check_password(self, password):
        return password == self.password
    
    def get_user(id):
        for user in logged_users:
            if user.id == id:
                return user
            return None
        
    def __repr__(self):
        return '<User %r>' % self.username
    



class OAuth2Client(db.Model, OAuth2ClientMixin):
    __tablename__ = 'oauth2_client'

    id = db.Column(db.Integer, primary_key=True)
    user_id = db.Column(
        db.Integer, db.ForeignKey('user.id', ondelete='CASCADE'))
    user = db.relationship('User')

    # the mixin alredy establishes the client_id, secret, redirect_uri, ...
    # https://github.com/lepture/authlib/blob/master/authlib/integrations/sqla_oauth2/client_mixin.py


class OAuth2AuthorizationCode(db.Model, OAuth2AuthorizationCodeMixin):
    __tablename__ = 'oauth2_code'

    id = db.Column(db.Integer, primary_key=True)
    user_id = db.Column(
        db.Integer, db.ForeignKey('user.id', ondelete='CASCADE'))
    user = db.relationship('User')


class OAuth2Token(db.Model, OAuth2TokenMixin):
    __tablename__ = 'oauth2_token'

    id = db.Column(db.Integer, primary_key=True)
    user_id = db.Column(
        db.Integer, db.ForeignKey('user.id', ondelete='CASCADE'))
    user = db.relationship('User')

    def is_refresh_token_active(self):
        if self.revoked:
            return False
        expires_at = self.issued_at + self.expires_in * 2
        return expires_at >= time.time()
    
class Image(db.Model):
    __tablename__ = 'toy'
    id = db.Column(db.Integer, primary_key=True)
    name = db.Column(db.String(40), unique=True)
    img = db.Column(db.LargeBinary, nullable=False)
    user_id = db.Column(db.Integer, db.ForeignKey('user.id'))
    user = db.relationship('User')
    def __repr__(self):
        return '<Image %r>' % self.name
    def __str__(self):
        return self.name