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use http::{HttpTryFrom, StatusCode};
use http_service::Body;
use crate::response::{IntoResponse, Response};
pub type Result<T = Response> = std::result::Result<T, Error>;
#[derive(Debug)]
pub struct Error {
resp: Response,
}
impl IntoResponse for Error {
fn into_response(self) -> Response {
self.resp
}
}
struct Cause(Box<dyn std::error::Error + Send + Sync>);
impl From<Response> for Error {
fn from(resp: Response) -> Error {
Error { resp }
}
}
impl From<StatusCode> for Error {
fn from(status: StatusCode) -> Error {
Error {
resp: Response::new(status.as_u16()),
}
}
}
pub trait ResultExt<T>: Sized {
fn client_err(self) -> Result<T> {
self.with_err_status(400)
}
fn server_err(self) -> Result<T> {
self.with_err_status(500)
}
fn with_err_status<S>(self, status: S) -> Result<T>
where
StatusCode: HttpTryFrom<S>;
}
impl<T, E: std::error::Error + Send + Sync + 'static> ResultExt<T> for std::result::Result<T, E> {
fn with_err_status<S>(self, status: S) -> Result<T>
where
StatusCode: HttpTryFrom<S>,
{
self.map_err(|e| Error {
resp: http::Response::builder()
.status(status)
.extension(Cause(Box::new(e)))
.body(Body::empty())
.unwrap()
.into(),
})
}
}