import os

from flask import Flask


def create_app(test_config=None):
    app = Flask(__name__, instance_relative_config=True)

    app.config.from_mapping(
        SECRET_KEY=os.environ.get("WYR_SECRET_KEY", "dev-only-change-me"),
        DATABASE=os.path.join(app.instance_path, "questions.db"),
    )

    if test_config is not None:
        app.config.update(test_config)

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

    from . import database

    app.teardown_appcontext(database.close_db)

    from .admin import bp as admin_bp
    from .routes import bp as public_bp

    app.register_blueprint(public_bp)
    app.register_blueprint(admin_bp)

    return app