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

#[derive(Debug)]
pub struct Err(anyhow::Error);
pub type Result<T, E = Err> = anyhow::Result<T, E>;

// Tell axum how to convert `Err` into a response.
impl IntoResponse for Err {
  fn into_response(self) -> Response {
    let err = self.0;
    error!("{}\n{}", err, err.backtrace());
    (StatusCode::INTERNAL_SERVER_ERROR, format!("ERR: {}", err)).into_response()
  }
}

// This enables using `?` on functions that return `Result<_, anyhow::Error>` to turn them into `Result<_, Err>`. That way you don't need to do that manually.
impl<E> From<E> for Err
where
  E: Into<anyhow::Error>,
{
  fn from(err: E) -> Self {
    Self(err.into())
  }
}