import os

from flask import Flask, render_template


def create_app(test_config=None):
    # create and configure the app
    app = Flask(__name__, instance_relative_config=True)

    #if test_config is None:
    #    # load the instance config, if it exists, when not testing
    #    app.config.from_pyfile('config.py', silent=True)
    #else:
    #    # load the test config if passed in
    #    app.config.from_mapping(test_config)

    ## ensure the instance folder exists
    #try:
    #    os.makedirs(app.instance_path)
    #except OSError:
    #    pass

    # a simple page that says hello
    @app.route('/')
    def index():
        return render_template('index.html')

    return app