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use std::future::Future;
use crate::{Endpoint, IntoResponse, Request, Result};
pub struct AndThen<E, F> {
inner: E,
f: F,
}
impl<E, F> AndThen<E, F> {
#[inline]
pub(crate) fn new(inner: E, f: F) -> AndThen<E, F> {
Self { inner, f }
}
}
#[async_trait::async_trait]
impl<E, F, Fut, R, R2> Endpoint for AndThen<E, F>
where
E: Endpoint<Output = R>,
F: Fn(R) -> Fut + Send + Sync,
Fut: Future<Output = Result<R2>> + Send,
R: IntoResponse,
R2: IntoResponse,
{
type Output = R2;
async fn call(&self, req: Request) -> Result<Self::Output> {
let resp = self.inner.call(req).await?;
(self.f)(resp).await
}
}