use std::fmt::Display;

use anyhow::{self, Result};
use ulid::Ulid;

pub struct ReferralCode(String);

impl Default for ReferralCode {
    fn default() -> Self {
        let out = Ulid::new();
        Self(format!("{}", out))
    }
}

impl Display for ReferralCode {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        f.write_str(&self.0)
    }
}

impl TryFrom<String> for ReferralCode {
    type Error = anyhow::Error;

    fn try_from(x: String) -> Result<Self> {
        // TODO: Check if string is a valid ULID
        Ok(Self(x))
        // match Ulid::try_from(x.clone()) {
        //     Ok(_) => ,
        //     Err(_) => Err(anyhow::anyhow!(
        //         "Referral Code does not have the right format"
        //     )),
        // }
    }
}