pub mod get {
    use axum::{
        extract::State,
        response::{self, IntoResponse, Redirect},
    };

    use crate::{
        app::App,
        error::Internal,
        ui::assets::{Asset, Assets},
    };

    pub async fn handler(State(app): State<App>) -> Result<Asset, Error> {
        if app
            .setup()
            .completed()
            .await
            .map_err(Internal::from)
            .map_err(Error::Internal)?
        {
            Err(Error::SetupCompleted)
        } else {
            Assets::index().map_err(Error::Internal)
        }
    }

    #[derive(Debug, thiserror::Error)]
    pub enum Error {
        #[error("setup already completed")]
        SetupCompleted,
        #[error("{0}")]
        Internal(Internal),
    }

    impl IntoResponse for Error {
        fn into_response(self) -> response::Response {
            match self {
                Self::SetupCompleted => Redirect::to("/login").into_response(),
                Self::Internal(error) => error.into_response(),
            }
        }
    }
}