app/__init__.py

__init__.py

from os import getenv
from flask import Flask
from flask_sqlalchemy import SQLAlchemy

from .config import config

db = SQLAlchemy()


def create_app(config_name=None):
    """ Create app.
    """
    app = init_and_config_app(config_name)
    app = add_plugins(app)

    from .core import core as core_blueprint
    app.register_blueprint(core_blueprint)

    return app


def init_and_config_app(config_name):
    """ Config app.
    """
    app = Flask(__name__)

    config_name = config_name or getenv("FLASK_CONFIG", "default")
    app.config.from_object(config[config_name])
    return app


def add_plugins(app):
    """ Add plugins.
    """
    db.init_app(app)
    
    return app