use human_units::FormatSize;
use std::fmt::{Display, Formatter, Result};

pub trait Human {
    fn human(&self) -> String;
}

pub struct Quantity(u64);

impl Display for Quantity {
    fn fmt(&self, f: &mut Formatter<'_>) -> Result {
        self.0.format_size().fmt(f)
    }
}

impl Human for Quantity {
    fn human(&self) -> String {
        self.to_string()
    }
}

impl Human for u64 {
    fn human(&self) -> String {
        self.format_size().to_string()
    }
}

impl<T: Human> Human for Option<T> {
    fn human(&self) -> String {
        match self {
            Some(h) => h.human(),
            None => "◌".to_string(),
        }
    }
}