from flask import Flask
from flask_mail import Mail
from flask_bootstrap import Bootstrap
from flask_sqlalchemy import SQLAlchemy
from flask_migrate import Migrate
from flask_login import LoginManager

from config import config_options


bootstrap = Bootstrap()
db = SQLAlchemy()
migrate = Migrate()
login_manager = LoginManager()
login_manager.session_protection = "strong"
login_manager.login_view = "auth.login"

mail = Mail()


def create_app(config_name):
    app = Flask(__name__)

    # Creating the app configurations
    app.config.from_object(config_options[config_name])

    # Initializing flask extensions
    bootstrap.init_app(app)
    db.init_app(app)
    migrate.init_app(app, db)
    login_manager.init_app(app)
    mail.init_app(app)

    # Registering the blueprint
    from .main import main as main_blueprint
    app.register_blueprint(main_blueprint)

    from .auth import auth as auth_blueprint
    app.register_blueprint(auth_blueprint, url_prefix="/authenticate")

    return app
