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use crate::{
client::Client,
error::{Error, ErrorType},
request::{PendingOption, Request},
routing::Route,
};
use hyper::StatusCode;
use serde::de::DeserializeSeed;
use std::{
future::Future,
pin::Pin,
task::{Context, Poll},
};
use twilight_model::{
guild::member::{Member, MemberDeserializer},
id::{GuildId, UserId},
};
#[cfg(not(feature = "simd-json"))]
use serde_json::Value;
#[cfg(feature = "simd-json")]
use simd_json::value::OwnedValue as Value;
pub struct GetMember<'a> {
fut: Option<PendingOption<'a>>,
guild_id: GuildId,
http: &'a Client,
user_id: UserId,
}
impl<'a> GetMember<'a> {
pub(crate) fn new(http: &'a Client, guild_id: GuildId, user_id: UserId) -> Self {
Self {
fut: None,
guild_id,
http,
user_id,
}
}
fn start(&mut self) -> Result<(), Error> {
let request = Request::from_route(Route::GetMember {
guild_id: self.guild_id.0,
user_id: self.user_id.0,
});
self.fut.replace(Box::pin(self.http.request_bytes(request)));
Ok(())
}
}
impl Future for GetMember<'_> {
type Output = Result<Option<Member>, Error>;
fn poll(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
loop {
if let Some(fut) = self.as_mut().fut.as_mut() {
let bytes = match fut.as_mut().poll(cx) {
Poll::Ready(Ok(bytes)) => bytes,
Poll::Ready(Err(Error {
kind: ErrorType::Response { status, .. },
..
})) if status == StatusCode::NOT_FOUND => {
return Poll::Ready(Ok(None));
}
Poll::Ready(Err(why)) => return Poll::Ready(Err(why)),
Poll::Pending => return Poll::Pending,
};
let mut bytes = bytes.as_ref().to_vec();
let value = crate::json::from_slice::<Value>(&mut bytes).map_err(Error::json)?;
let member_deserializer = MemberDeserializer::new(self.guild_id);
let member = member_deserializer
.deserialize(value)
.map_err(Error::json)?;
return Poll::Ready(Ok(Some(member)));
}
if let Err(why) = self.as_mut().start() {
return Poll::Ready(Err(why));
}
}
}
}