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use crate::Key;
use std::fmt::{Display, Formatter};

#[derive(Debug, Eq, PartialEq)]
pub enum Error {
    MissingArg(Key),
    Other(String),
}

impl std::error::Error for Error {}

impl Display for Error {
    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
        write!(
            f,
            "{}",
            match self {
                Error::MissingArg(k) => format!("Missing argument: '{}'", k),
                Error::Other(e) => e.to_string(),
            }
        )
    }
}