use std::{convert::TryFrom, ffi::OsString};

pub(crate) enum Color {
    Black = 0,
    Red = 1,
    Green = 2,
    Yellow = 3,
    Blue = 4,
    Magenta = 5,
    Cyan = 6,
    White = 7,
}

impl Default for Color {
    fn default() -> Self {
        Color::Blue
    }
}

impl TryFrom<OsString> for Color {
    type Error = ();

    fn try_from(s: OsString) -> Result<Self, ()> {
        let s = match s.to_str() {
            Some(s) => s,
            None => return Err(()),
        };
        Ok(match s {
            "black" => Color::Black,
            "red" => Color::Red,
            "green" => Color::Green,
            "yellow" => Color::Yellow,
            "blue" => Color::Blue,
            "magenta" => Color::Magenta,
            "cyan" => Color::Cyan,
            "white" => Color::White,
            _ => return Err(()),
        })
    }
}