import os

from flask import Flask


def create_app(test_config=None):
    # create and configure the app
    app = Flask(__name__, instance_relative_config=True)
    app.config.from_mapping(
        SECRET_KEY="dev",
        DATABASE=os.path.join(app.instance_path, "flaskr.sqlite"),
    )

    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
    os.makedirs(app.instance_path, exist_ok=True)

    # a simple page that says hello
    @app.route("/health")
    def health():
        return "Health check passed!"

    from . import home
    app.register_blueprint(home.bp, url_prefix="/")

    from . import questions
    app.register_blueprint(questions.bp, url_prefix="/api/questions")

    return app