use crate::{cryptography::hashing::HashedBytes, prelude::*};
use tokio::task::spawn_blocking;

/// Returns true if the provided master password is valid
async fn check_master_pass(
    msg: &Message,
    db: &Pool,
    locale: LocaleRef,
    master_pass: &str,
) -> crate::Result<Option<String>> {
    let user_id = msg.get_user_id()?;
    let Some(model) = MasterPass::get(user_id, db).await? else {
        handle_error(anyhow::anyhow!(
            "User was put into the GetMasterPass state with no master password set"
        ));
        return Ok(Some(locale.master_password_is_not_set.to_owned()));
    };

    let is_valid = {
        let hash = HashedBytes::from(model);
        let master_pass: Box<[u8]> = master_pass.as_bytes().into();
        spawn_blocking(move || hash.verify(&master_pass)).await?
    };

    if !is_valid {
        return Ok(Some(locale.wrong_master_password.to_owned()));
    }
    Ok(None)
}

crate::simple_state_handler!(get_master_pass, check_master_pass);