mod execute;
mod parse;
mod prompt;

use execute::interpret;
use rustyline::error::ReadlineError;
use rustyline::{Editor, Result};

use crate::prompt::Prompt;

fn main() -> Result<()> {
    let mut rl = Editor::<()>::new()?;

    let mut prompt = Prompt::new();

    loop {
        let readline = rl.readline(&prompt.get_prompt());

        match readline {
            Ok(line) => {
                if let Err(err) = interpret(&line) {
                    println!("{}", err);
                }
            }
            Err(ReadlineError::Interrupted) => {
                println!("CTRL-C");
                break;
            }
            Err(ReadlineError::Eof) => {
                println!("CTRL-D");
                break;
            }
            Err(err) => {
                println!("Error: {:?}", err);
                break;
            }
        }
    }

    Ok(())
}