use super::Cmd;
use clap::{Arg, Command};
use std::io;

#[derive(Debug)]
pub struct Yes {
    name: &'static str,
    path: Option<crate::Path>,
}

impl Default for Yes {
    fn default() -> Self {
        Self {
            name: "yes",
            path: Some(crate::Path::UsrBin),
        }
    }
}

impl Cmd for Yes {
    fn name(&self) -> &str {
        self.name
    }

    fn cli(&self) -> clap::Command {
        Command::new(self.name)
            .about("output a string repeatedly until killed")
            .author("Nathan Fisher")
            .arg(Arg::new("msg").num_args(1).default_value("y"))
    }

    fn run(&self, matches: Option<&clap::ArgMatches>) -> Result<(), Box<dyn std::error::Error>> {
        let Some(matches) = matches else {
            return Err(Box::new(io::Error::new(io::ErrorKind::Other, "no input")));
        };
        let msg = matches.get_one::<String>("msg").unwrap();
        loop {
            println!("{msg}");
        }
    }

    fn path(&self) -> Option<crate::Path> {
        self.path
    }
}