app.py

from flask import Flask
from flask_sqlalchemy import SQLAlchemy
from os import path
from flask_login import LoginManager
from flask_bcrypt import Bcrypt

db = SQLAlchemy()
bcrypt = Bcrypt()
DB_NAME = "database.db"


def create_app():
    app = Flask(__name__)
    app.config['SECRET_KEY'] = '0eeff27f9c89ab975e01c1eb5aeef5148b1810e9b690a77bedd94a261b3d9b98'
    app.config['SQLALCHEMY_DATABASE_URI'] = f'postgresql://flask:Passw0rd!@postgres:5432/flask'
    app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False
    db.init_app(app)
    bcrypt.init_app(app)

    from views import views
    from auth import auth

    app.register_blueprint(views, url_prefix='/')
    app.register_blueprint(auth, url_prefix='/')

    from models import Users

    create_database(app)

    login_manager = LoginManager()
    login_manager.init_app(app)
    login_manager.login_view = 'auth.login'

    @login_manager.user_loader
    def load_user(user_id):
        return Users.query.get(int(user_id))

    return app


def create_database(app):
    if not path.exists(DB_NAME):
        db.create_all(app=app)
        print('Created Database!')


if __name__ == '__main__':
    app = create_app()
    app.run(host='0.0.0.0')