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use std::borrow::Cow;
use rocket::{
http::Header,
request::{self, FromRequest},
response::{self, Responder},
Request,
};
pub(crate) struct Etagged<'r, T>(pub T, pub Cow<'r, str>);
impl<'r, 'o: 'r, T: Responder<'r, 'o>> Responder<'r, 'o> for Etagged<'o, T> {
fn respond_to(self, r: &'r Request<'_>) -> response::Result<'o> {
let mut resp = self.0.respond_to(r)?;
resp.set_header(Header::new("etag", self.1));
Ok(resp)
}
}
pub(crate) struct Immutable<T>(pub T);
impl<'r, 'o: 'r, T: Responder<'r, 'o>> Responder<'r, 'o> for Immutable<T> {
fn respond_to(self, r: &'r Request<'_>) -> response::Result<'o> {
let mut resp = self.0.respond_to(r)?;
resp.set_header(Header::new("cache-control", "public, max-age=604800, immutable"));
Ok(resp)
}
}
pub(crate) struct IfNoneMatch<'r>(pub &'r str);
#[async_trait]
impl<'r> FromRequest<'r> for IfNoneMatch<'r> {
type Error = ();
async fn from_request(req: &'r Request<'_>) -> request::Outcome<Self, Self::Error> {
match req.headers().get_one("if-none-match") {
Some(h) => request::Outcome::Success(Self(h)),
None => request::Outcome::Forward(()),
}
}
}
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