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use crate::listener::SlackClientEventsHyperListener;
use crate::connector::SlackClientHyperConnector;
use slack_morphism::errors::*;
use slack_morphism::listener::*;
use slack_morphism::signature_verifier::SlackEventSignatureVerifier;
use futures::future::{BoxFuture, FutureExt, TryFutureExt};
use hyper::body::*;
use hyper::client::connect::Connect;
use hyper::{Method, Request, Response, StatusCode};
use slack_morphism::UserCallbackResult;
pub use slack_morphism_models::events::*;
pub use slack_morphism_models::SlackResponseUrl;
use std::collections::HashMap;
use std::future::Future;
use std::sync::Arc;
impl<H: 'static + Send + Sync + Connect + Clone> SlackClientEventsHyperListener<H> {
pub fn command_events_service_fn<'a, D, F>(
&self,
config: Arc<SlackCommandEventsListenerConfig>,
command_service_fn: UserCallbackFunction<
SlackCommandEvent,
impl Future<Output = UserCallbackResult<SlackCommandEventResponse>> + 'static + Send,
SlackClientHyperConnector<H>,
>,
) -> impl Fn(
Request<Body>,
D,
) -> BoxFuture<
'a,
Result<Response<Body>, Box<dyn std::error::Error + Send + Sync + 'a>>,
>
+ 'a
+ Send
+ Clone
where
D: Fn(Request<Body>) -> F + 'a + Send + Sync + Clone,
F: Future<Output = Result<Response<Body>, Box<dyn std::error::Error + Send + Sync + 'a>>>
+ 'a
+ Send,
{
let signature_verifier: Arc<SlackEventSignatureVerifier> = Arc::new(
SlackEventSignatureVerifier::new(&config.events_signing_secret),
);
let client = self.environment.client.clone();
let error_handler = self.environment.error_handler.clone();
let user_state_storage = self.environment.user_state.clone();
move |req: Request<Body>, chain: D| {
let cfg = config.clone();
let sign_verifier = signature_verifier.clone();
let sc = client.clone();
let thread_error_handler = error_handler.clone();
let thread_user_state_storage = user_state_storage.clone();
async move {
match (req.method(), req.uri().path()) {
(&Method::POST, url) if url == cfg.events_path => {
SlackClientHyperConnector::<H>::decode_signed_response(req, &sign_verifier)
.map_ok(|body| {
let body_params: HashMap<String, String> =
url::form_urlencoded::parse(body.as_bytes())
.into_owned()
.collect();
match (
body_params.get("team_id"),
body_params.get("channel_id"),
body_params.get("user_id"),
body_params.get("command"),
body_params.get("text"),
body_params.get("response_url"),
body_params.get("trigger_id"),
) {
(
Some(team_id),
Some(channel_id),
Some(user_id),
Some(command),
text,
Some(response_url),
Some(trigger_id),
) => Ok(SlackCommandEvent::new(
team_id.into(),
channel_id.into(),
user_id.into(),
command.into(),
response_url.into(),
trigger_id.into(),
)
.opt_text(text.cloned())),
_ => Err(SlackClientError::SystemError(
SlackClientSystemError::new().with_message(
"Absent payload in the request from Slack".into(),
),
))
.map_err(|e| e.into()),
}
})
.and_then(|event| async move {
match event {
Ok(command_event) => {
match command_service_fn(
command_event,
sc.clone(),
thread_user_state_storage.clone(),
)
.await
{
Ok(cresp) => Response::builder()
.status(StatusCode::OK)
.header(
"content-type",
"application/json; charset=utf-8",
)
.body(serde_json::to_string(&cresp).unwrap().into())
.map_err(|e| e.into()),
Err(err) => {
let status_code = thread_error_handler(
err,
sc.clone(),
thread_user_state_storage.clone(),
);
Response::builder()
.status(status_code)
.body(Body::empty())
.map_err(|e| e.into())
}
}
}
Err(command_event_err) => {
let status_code = thread_error_handler(
command_event_err,
sc,
thread_user_state_storage,
);
Response::builder()
.status(status_code)
.body(Body::empty())
.map_err(|e| e.into())
}
}
})
.await
}
_ => chain(req).await,
}
}
.boxed()
}
}
}
