implemented SSE

src/main.rs

@@ -60,7 +60,7 @@ async fn main(mut spawner: Spawner) {
 
     wait_for_stack_up(stack).await;
 
-    start_webserver(&mut spawner, stack, shared_store.clone());
+    start_webserver(&mut spawner, stack, shared_store.clone(), chan);
 
     /****************************** Spawning tasks ***********************************/
     debug!("spawing NFC reader task...");

src/webserver/api.rs

@@ -4,7 +4,6 @@ use picoserve::{
     response::{self, IntoResponse},
 };
 use serde::Deserialize;
-
 use crate::{
     store::{Name, hex_string_to_tally_id},
     webserver::{app::AppState, sse::IDEvents},
@@ -40,3 +39,7 @@ pub async fn add_mapping(
     let tally_id = hex_string_to_tally_id(&data.id).unwrap();
     store.mapping.add_mapping(tally_id, data.name);
 }
+
+pub async fn get_idevent(State(state): State<AppState>) -> impl IntoResponse{
+    response::EventStream(IDEvents(state.chan.subscriber().unwrap()))
+}

src/webserver/app.rs

@@ -3,15 +3,17 @@ use embassy_sync::{blocking_mutex::raw::CriticalSectionRawMutex, mutex::Mutex};
 use picoserve::{AppWithStateBuilder, routing::get};
 
 use crate::{
+    TallyChannel, UsedStore,
     webserver::{
-        api::{add_mapping, get_mapping},
+        api::{add_mapping, get_idevent, get_mapping},
         assets::Assets,
-    }, UsedStore,
+    },
 };
 
 #[derive(Clone)]
 pub struct AppState {
     pub store: Rc<Mutex<CriticalSectionRawMutex, UsedStore>>,
+    pub chan: &'static TallyChannel,
 }
 
 pub struct AppProps;
@@ -23,9 +25,6 @@ impl AppWithStateBuilder for AppProps {
     fn build_app(self) -> picoserve::Router<Self::PathRouter, AppState> {
         picoserve::Router::from_service(Assets)
             .route("/api/mapping", get(get_mapping).post(add_mapping))
-        // .route(
+            .route("/api/idevent", get(get_idevent))
-        //     "/api/idevent",
-        //     get(move || response::EventStream(Events(self.chan))),
-        // )
     }
 }

src/webserver/mod.rs

@@ -7,14 +7,14 @@ use picoserve::{AppRouter, AppWithStateBuilder};
 use static_cell::make_static;
 
 use crate::{
-    UsedStore,
+    TallyChannel, UsedStore,
     webserver::app::{AppProps, AppState},
 };
 
-mod assets;
-// mod sse;
 mod api;
 mod app;
+mod assets;
+mod sse;
 
 pub const WEB_TAKS_SIZE: usize = 3; // Up this number if request start fail with Timeouts.
 
@@ -22,10 +22,11 @@ pub fn start_webserver(
     spawner: &mut Spawner,
     stack: Stack<'static>,
     store: Rc<Mutex<CriticalSectionRawMutex, UsedStore>>,
+    chan: &'static TallyChannel,
 ) {
     let app = make_static!(AppProps.build_app());
 
-    let state = make_static!(AppState { store });
+    let state = make_static!(AppState { store, chan });
 
     let config = make_static!(picoserve::Config::new(picoserve::Timeouts {
         start_read_request: Some(Duration::from_secs(5)),

src/webserver/sse.rs

@@ -2,9 +2,11 @@ use embassy_time::{Duration, Timer};
 use log::warn;
 use picoserve::response;
 
-pub struct Events(pub TallySubscriber);
+use crate::{TallySubscriber, store::tally_id_to_hex_string};
 
-impl response::sse::EventSource for Events {
+pub struct IDEvents(pub TallySubscriber);
+
+impl response::sse::EventSource for IDEvents {
     async fn write_events<W: picoserve::io::Write>(
         mut self,
         mut writer: response::sse::EventWriter<W>,
@@ -16,7 +18,9 @@ impl response::sse::EventSource for Events {
             match sel.await {
                 embassy_futures::select::Either::First(msg) => match msg {
                     embassy_sync::pubsub::WaitResult::Message(id) => {
-                        writer.write_event("msg", id.to_string().as_str()).await?
+                        writer
+                            .write_event("msg", tally_id_to_hex_string(id).unwrap().as_str())
+                            .await?
                     }
                     embassy_sync::pubsub::WaitResult::Lagged(_) => {
                         warn!("SSE subscriber got lagged");