mod front_of_house {
    pub mod hosting {
        pub fn add_to_waitlist() {}
        fn seat_at_table() {}
    }

    mod serving {
        fn take_order() {}
        fn serve_order() {}
        fn take_payment() {}
    }
}

fn deliver_order() {}

mod back_of_house {
    fn fix_incorrect_order() {
        cook_order();
        super::deliver_order();
    }

    fn cook_order() {}

    pub struct Breakfast {
        seasonal_fruits: String,
        pub toast: String,
    }

    impl Breakfast {
        pub fn summer(toast: &str) -> Self {
            Self {
                toast: String::from(toast),
                seasonal_fruits: String::from("Peach"),
            }
        }
    }
}

pub mod eat_at_restaurent {
    // absolute
//    crate::front_of_house::hosting::add_to_waitlist();

    // relative
//    front_of_house::hosting::add_to_waitlist();
    let mut meal = back_of_house::Breakfast::summer("Rye");

    meal.toast = String::from("Wheat");
    println!("I'd like {} toast please.", meal.toast);
}