from flask import Flask
from flask_login import LoginManager
from flask_migrate import Migrate
from flask_sqlalchemy import SQLAlchemy

from config import Config



db = SQLAlchemy()
migrate = Migrate()
login = LoginManager()
login.login_view = "auth.login"
login.login_message = "Please log in to access this page."


def create_app(config_class=Config):
    """
    The application instance to be used when initializing the app

    :param config_class:  (Default value = Config)
    :returns: The flask application
    """
    app = Flask(__name__)
    app.config.from_object(config_class)

    db.init_app(app)
    migrate.init_app(app, db, render_as_batch=True)
    login.init_app(app)

    from app.api import bp as bp_api
    app.register_blueprint(bp_api, url_prefix='/api')

    from app.auth import bp as bp_auth
    app.register_blueprint(bp_auth, url_prefix='/auth')

    from app.errors import bp as bp_errors
    app.register_blueprint(bp_errors)

    from app.main import bp as bp_main
    app.register_blueprint(bp_main)

    return app


from app import models