from flask import Flask
from flask_sqlalchemy import SQLAlchemy
from flask_migrate import Migrate
from config import app_config


db = SQLAlchemy()
def create_app(config_name):
    app = Flask(__name__, instance_relative_config=True)
    app.config.from_object(app_config[config_name])
    app.config.from_pyfile('config.py')
    db.init_app(app)
    migrate = Migrate(app, db)

    from app import models

    from .api import api as api_blueprint
    from .site import site as site_blueprint
    app.register_blueprint(api_blueprint)
    app.register_blueprint(site_blueprint)

    return app