pub struct Config {
    query: String,
    filename: String,
    case_insensitive: bool,
}

impl Config {
    pub fn new(args: &[String]) -> Result<Config, &str> {
        if args.len() < 3 {
            return Err("Not enough params");
        }
        let mut case_insensitive = false;
        let mut parsed = 0;
        let mut query : String = "".to_string();
        let mut filename : String = "".to_string();
        for i in 1..args.len() {
            if args[i] == "-i" {
                case_insensitive = true;
            } else {
                parsed += 1;
                if parsed == 1 {
                    query = args[i].clone();
                }
                if parsed == 2 {
                    filename = args[i].clone();
                    break;
                }
            }
        }
        Ok(Config {
            query,
            filename,
            case_insensitive,
        })
    }
}