use std::error;

use axum::{
    http::StatusCode,
    response::{IntoResponse, Response},
};

// I'm making an effort to avoid `anyhow` here, as that crate is _enormously_
// complex (though very usable). We don't need to be overly careful about
// allocations on errors in this app, so this is fine for most "general
// failure" cases.
type BoxedError = Box<dyn error::Error + Send + Sync>;

// Returns a 500 Internal Server Error to the client. Meant to be used via the
// `?` operator; _does not_ return the originating error to the client.
#[derive(Debug)]
pub struct InternalError;

impl<E> From<E> for InternalError
where
    E: Into<BoxedError>,
{
    fn from(_: E) -> Self {
        // At some point it may be useful for this to record the originating
        // error so that it can be logged… -oj
        Self
    }
}

impl IntoResponse for InternalError {
    fn into_response(self) -> Response {
        (StatusCode::INTERNAL_SERVER_ERROR, "internal server error").into_response()
    }
}