@@ -1,1051 +0,0 @@
1−//! The Crux `App`: model, events, effects, update logic and view.
3−//! Streaming works like this: after a successful connect the shell opens the
4−//! `/event` SSE stream and forwards every decoded event as
5−//! [`Event::ServerEvent`]. The core parses those and mutates the chat
6−//! incrementally — creating the assistant message on `message.updated`, growing
7−//! its text on `message.part.updated`, and clearing the "generating" flag on
8−//! `session.idle`. User messages are shown optimistically the moment they're
9−//! sent, so the stream only ever *adds* assistant content.
14− render::{render, RenderOperation},
17−use crux_http::command::{Http, RequestBuilder};
18−use crux_http::protocol::HttpRequest;
19−use serde::{Deserialize, Serialize};
21−use crate::protocol::{self, ServerEvent, WireMessageEnvelope, WirePart};
23−/// Result of an HTTP effect handed back to the core.
24−pub type HttpResult = Result<crux_http::Response<String>, crux_http::HttpError>;
26−// ─── Events ──────────────────────────────────────────────────────────────────
29− // Lifecycle / connect
31− ServerUrlChanged(String),
32− UsernameChanged(String),
33− PasswordChanged(String),
38− SelectSession(String),
40− DeleteSession(String),
43− LoadMessages(String),
44− DraftChanged(String),
48− // A raw event line from the shell's `/event` SSE subscription.
56− // ── Internal: results of HTTP effects (never sent by the shell) ──────────
57− HealthProbed(HttpResult),
58− SessionsLoaded(HttpResult),
59− SessionCreated(HttpResult),
60− MessagesLoaded(String, HttpResult),
61− PromptSent(HttpResult),
62− SessionDeleted(HttpResult),
66−// ─── Effects ─────────────────────────────────────────────────────────────────
71− Render(RenderOperation),
75−// ─── Model ───────────────────────────────────────────────────────────────────
82− /// The server answered 401 to an unauthenticated probe — show credentials.
84− /// Credentials were accepted; attach the auth header to every request.
88− error: Option<String>,
91− sessions: Vec<SessionView>,
92− current_session_id: Option<String>,
93− current_session_title: String,
95− messages: Vec<MsgState>,
99− /// Monotonic counter for optimistic (client-side) user-message ids.
104− fn message_mut(&mut self, id: &str) -> Option<&mut MsgState> {
105− self.messages.iter_mut().find(|m| m.id == id)
108− fn has_credentials(&self) -> bool {
109− !self.username.is_empty() || !self.password.is_empty()
112− fn is_current(&self, session_id: &str) -> bool {
113− self.current_session_id.as_deref() == Some(session_id)
117−/// Internal per-message state. Parts are tracked by id so streaming updates can
118−/// upsert them; the [`MessageView`] handed to the shell is derived from these.
123− status: MessageStatus,
125− text_parts: Vec<(String, String)>,
126− reasoning_parts: Vec<(String, String)>,
127− tool_parts: Vec<(String, ToolView)>,
131− fn new(id: String, role: String, time: u64) -> Self {
136− status: MessageStatus::Sent,
138− text_parts: Vec::new(),
139− reasoning_parts: Vec::new(),
140− tool_parts: Vec::new(),
144− fn upsert_part(parts: &mut Vec<(String, String)>, id: &str, text: String) {
145− if let Some(slot) = parts.iter_mut().find(|(pid, _)| pid == id) {
148− parts.push((id.to_string(), text));
152− fn upsert_tool(&mut self, id: &str, view: ToolView) {
153− if let Some(slot) = self.tool_parts.iter_mut().find(|(pid, _)| pid == id) {
156− self.tool_parts.push((id.to_string(), view));
160− fn remove_part(&mut self, part_id: &str) {
161− self.text_parts.retain(|(pid, _)| pid != part_id);
162− self.reasoning_parts.retain(|(pid, _)| pid != part_id);
163− self.tool_parts.retain(|(pid, _)| pid != part_id);
166− fn to_view(&self) -> MessageView {
167− let join = |parts: &[(String, String)]| {
168− parts.iter().map(|(_, t)| t.as_str()).collect::<String>()
170− let reasoning = join(&self.reasoning_parts);
172− id: self.id.clone(),
173− role: self.role.clone(),
174− text: join(&self.text_parts),
175− reasoning: (!reasoning.is_empty()).then_some(reasoning),
176− tools: self.tool_parts.iter().map(|(_, t)| t.clone()).collect(),
178− status: self.status.clone(),
179− streaming: self.streaming,
184−// ─── View model ──────────────────────────────────────────────────────────────
186−#[derive(Serialize, Deserialize, Clone, Debug, Default, PartialEq, Eq)]
194−#[derive(Serialize, Deserialize, Clone, Debug, Default)]
195−pub struct SessionView {
200−#[derive(Serialize, Deserialize, Clone, Debug, Default, PartialEq, Eq)]
201−pub enum MessageStatus {
208−#[derive(Serialize, Deserialize, Clone, Debug, Default)]
209−pub struct ToolView {
212− pub title: Option<String>,
215−#[derive(Serialize, Deserialize, Clone, Debug, Default)]
216−pub struct MessageView {
220− pub reasoning: Option<String>,
221− pub tools: Vec<ToolView>,
223− pub status: MessageStatus,
224− pub streaming: bool,
227−#[derive(Serialize, Deserialize, Clone, Debug, Default)]
228−pub struct ViewModel {
230− pub server_url: String,
231− pub username: String,
232− pub password: String,
233− pub auth_required: bool,
234− pub connected: bool,
236− pub error: Option<String>,
237− pub sessions: Vec<SessionView>,
238− pub current_session_id: Option<String>,
239− pub current_session_title: String,
240− pub messages: Vec<MessageView>,
242− pub generating: bool,
245−// ─── App ─────────────────────────────────────────────────────────────────────
248−pub struct OpencodeApp;
251− fn get(&self, model: &Model, path: &str) -> RequestBuilder<Effect, Event, String> {
252− let url = format!("{}{path}", model.server_url);
253− self.with_auth(Http::get(&url).expect_string(), model)
256− fn post_json(&self, model: &Model, path: &str, body: &serde_json::Value) -> RequestBuilder<Effect, Event, String> {
257− let url = format!("{}{path}", model.server_url);
258− let bytes = serde_json::to_vec(body).unwrap_or_default();
259− let req = Http::post(&url)
261− .header("Content-Type", "application/json")
263− self.with_auth(req, model)
266− fn delete(&self, model: &Model, path: &str) -> RequestBuilder<Effect, Event, String> {
267− let url = format!("{}{path}", model.server_url);
268− self.with_auth(Http::delete(&url).expect_string(), model)
271− /// Attach an RFC 7617 Basic-Auth header when the model carries credentials.
272− fn with_auth<E>(&self, req: RequestBuilder<Effect, Event, E>, model: &Model) -> RequestBuilder<Effect, Event, E>
276− if model.has_credentials() {
277− let creds = format!("{}:{}", model.username, model.password);
278− let encoded = base64::engine::general_purpose::STANDARD.encode(creds.as_bytes());
279− req.header("Authorization", format!("Basic {encoded}"))
286−impl App for OpencodeApp {
289− type ViewModel = ViewModel;
290− type Effect = Effect;
292− fn update(&self, event: Event, model: &mut Model) -> Command<Effect, Event> {
294− // ── Lifecycle / connect ─────────────────────────────────────────
295− Event::Start => render(),
297− // Store the field verbatim while typing; normalizing here would fight
298− // the user's edits (e.g. eat the "://" as they type it). The URL is
299− // normalized once, on Connect.
300− // Clear any prior error as soon as the user edits a field, so a stale
301− // message (e.g. "Invalid credentials") doesn't linger while they correct it.
302− Event::ServerUrlChanged(url) => {
303− model.server_url = url;
304− if model.error.is_some() {
309− Event::UsernameChanged(u) => {
311− if model.error.is_some() {
316− Event::PasswordChanged(p) => {
318− if model.error.is_some() {
325− model.server_url = normalize_url(&model.server_url);
326− if model.server_url.is_empty() {
327− model.error = Some("Enter a server URL".to_string());
330− model.loading = true;
332− model.auth_required = false;
333− render().and(self.get(model, "/global/health").build().then_send(Event::HealthProbed))
336− Event::HealthProbed(result) => self.on_health_probed(model, result),
338− // ── Sessions ────────────────────────────────────────────────────
339− Event::LoadSessions => {
340− model.loading = true;
341− render().and(self.get(model, "/session").build().then_send(Event::SessionsLoaded))
344− Event::SessionsLoaded(result) => {
345− model.loading = false;
346− match ok_body(result) {
348− model.sessions = protocol::parse_sessions(&body)
350− .map(|s| SessionView {
352− title: display_title(&s.title),
355− // Impose a stable alphabetical order so the list doesn't shuffle
356− // with whatever order the server happens to return sessions in.
357− model.sessions.sort_by_key(|s| s.title.to_lowercase());
359− Err(e) => model.error = Some(e),
364− Event::SelectSession(id) => {
365− model.current_session_title = model
368− .find(|s| s.id == id)
369− .map(|s| s.title.clone())
370− .unwrap_or_default();
371− model.current_session_id = Some(id.clone());
372− model.messages.clear();
373− model.screen = Screen::Chat;
374− model.loading = true;
376− render().and(Command::event(Event::LoadMessages(id)))
379− Event::CreateSession => {
380− model.loading = true;
382− self.post_json(model, "/session", &serde_json::json!({}))
384− .then_send(Event::SessionCreated),
388− Event::SessionCreated(result) => {
389− model.loading = false;
390− match ok_body(result) {
392− if let Some(s) = protocol::parse_session(&body) {
393− let view = SessionView {
395− title: display_title(&s.title),
397− if !model.sessions.iter().any(|e| e.id == view.id) {
398− model.sessions.insert(0, view);
400− return render().and(Command::event(Event::SelectSession(s.id)));
402− model.error = Some("Malformed session response".to_string());
404− Err(e) => model.error = Some(e),
409− Event::DeleteSession(id) => {
410− model.sessions.retain(|s| s.id != id);
411− let mut cmd = self.delete(model, &format!("/session/{id}")).build().then_send(Event::SessionDeleted);
412− if model.is_current(&id) {
413− model.current_session_id = None;
414− model.messages.clear();
415− model.screen = Screen::Sessions;
417− cmd = render().and(cmd);
421− Event::SessionDeleted(result) => {
422− if let Err(e) = ok_body(result) {
423− model.error = Some(e);
428− // ── Chat ────────────────────────────────────────────────────────
429− Event::LoadMessages(id) => {
431− self.get(model, &format!("/session/{id}/message"))
433− .then_send(move |result| Event::MessagesLoaded(id.clone(), result)),
437− Event::MessagesLoaded(session_id, result) => {
438− if !model.is_current(&session_id) {
441− model.loading = false;
442− match ok_body(result) {
444− model.messages = protocol::parse_messages(&body).iter().map(message_from_wire).collect();
445− model.generating = model.messages.iter().any(|m| m.streaming);
447− Err(e) => model.error = Some(e),
452− Event::DraftChanged(text) => {
457− Event::SendMessage(text) => {
458− let text = text.trim().to_string();
459− let Some(session_id) = model.current_session_id.clone() else {
462− if text.is_empty() {
465− model.local_seq += 1;
466− let mut user = MsgState::new(format!("local-{}", model.local_seq), "user".to_string(), 0);
467− user.status = MessageStatus::Pending;
468− MsgState::upsert_part(&mut user.text_parts, "local", text.clone());
469− model.messages.push(user);
470− model.draft.clear();
471− model.generating = true;
474− let body = serde_json::json!({ "parts": [{ "type": "text", "text": text }] });
476− self.post_json(model, &format!("/session/{session_id}/prompt_async"), &body)
478− .then_send(Event::PromptSent),
482− Event::PromptSent(result) => {
483− match ok_body(result) {
484− Ok(_) => set_last_pending(model, MessageStatus::Sent),
486− set_last_pending(model, MessageStatus::Failed);
487− model.generating = false;
488− model.error = Some(e);
494− Event::CancelGeneration => {
495− model.generating = false;
496− match model.current_session_id.clone() {
497− Some(id) => render().and(
498− self.post_json(model, &format!("/session/{id}/abort"), &serde_json::json!({}))
500− .then_send(Event::Aborted),
506− Event::Aborted(_) => render(),
508− // ── SSE ─────────────────────────────────────────────────────────
509− Event::ServerEvent(json) => {
510− if let Some(event) = protocol::parse_event(&json) {
511− apply_server_event(model, event);
516− // ── Navigation / misc ───────────────────────────────────────────
517− Event::NavigateToSessions => {
518− model.screen = Screen::Sessions;
519− model.current_session_id = None;
520− model.messages.clear();
521− model.generating = false;
522− render().and(self.get(model, "/session").build().then_send(Event::SessionsLoaded))
525− Event::NavigateToConnect => {
526− model.screen = Screen::Connect;
527− model.connected = false;
528− model.sessions.clear();
529− model.messages.clear();
530− model.current_session_id = None;
534− Event::DismissError => {
541− fn view(&self, model: &Model) -> ViewModel {
543− screen: model.screen.clone(),
544− server_url: model.server_url.clone(),
545− username: model.username.clone(),
546− password: model.password.clone(),
547− auth_required: model.auth_required,
548− connected: model.connected,
549− loading: model.loading,
550− error: model.error.clone(),
551− sessions: model.sessions.clone(),
552− current_session_id: model.current_session_id.clone(),
553− current_session_title: model.current_session_title.clone(),
554− messages: model.messages.iter().map(MsgState::to_view).collect(),
555− draft: model.draft.clone(),
556− generating: model.generating,
562− fn on_health_probed(&self, model: &mut Model, result: HttpResult) -> Command<Effect, Event> {
563− let has_creds = model.has_credentials();
566− let status = response.status().as_u16();
568− model.loading = false;
570− model.error = Some("Invalid credentials".to_string());
572− model.auth_required = true;
576− if (200..300).contains(&status) {
578− model.authed = true;
580− model.connected = true;
581− model.auth_required = false;
583− model.screen = Screen::Sessions;
584− model.loading = true;
585− return render().and(self.get(model, "/session").build().then_send(Event::SessionsLoaded));
587− model.loading = false;
588− model.error = Some(format!("Server returned status {status}"));
592− model.loading = false;
593− model.error = Some(format!("Connection failed: {e}"));
600−// ─── SSE application ─────────────────────────────────────────────────────────
602−fn apply_server_event(model: &mut Model, event: ServerEvent) {
604− // Only assistant messages are created from the stream — the user's own
605− // message is already shown optimistically, so ignoring the server's copy
606− // avoids a duplicate bubble.
607− ServerEvent::MessageUpdated { properties } => {
608− let info = properties.info;
609− if info.role != "assistant" || !model.is_current(&info.session_id) {
612− let streaming = info.time.completed.is_none() && info.error.is_none();
613− if let Some(msg) = model.message_mut(&info.id) {
614− msg.streaming = streaming;
616− msg.time = info.time.created;
619− let mut msg = MsgState::new(info.id.clone(), "assistant".to_string(), info.time.created);
620− msg.streaming = streaming;
621− model.messages.push(msg);
623− if let Some(err) = info.error {
624− model.error = Some(err.message());
625− model.generating = false;
629− // Apply only to a message we already track (an assistant message from the
630− // event above). Parts for unknown ids are ignored — see module docs.
631− ServerEvent::MessagePartUpdated { properties } => {
632− let part = properties.part;
633− let delta = properties.delta;
634− let msg_id = part.message_id().to_string();
635− let Some(msg) = model.message_mut(&msg_id) else {
639− WirePart::Text { id, text, synthetic, .. } => {
643− let value = pick_text(text, &delta, &msg.text_parts, &id);
644− MsgState::upsert_part(&mut msg.text_parts, &id, value);
646− WirePart::Reasoning { id, text, .. } => {
647− let value = pick_text(text, &delta, &msg.reasoning_parts, &id);
648− MsgState::upsert_part(&mut msg.reasoning_parts, &id, value);
650− WirePart::Tool { id, tool, state, .. } => {
651− let sv = protocol::tool_state_view(&state);
652− msg.upsert_tool(&id, ToolView { name: tool, status: sv.status, title: sv.title });
654− WirePart::Other => {}
658− ServerEvent::MessagePartRemoved { properties } => {
659− if let Some(msg) = model.message_mut(&properties.message_id) {
660− msg.remove_part(&properties.part_id);
664− ServerEvent::MessageRemoved { properties } => {
665− model.messages.retain(|m| m.id != properties.message_id);
668− ServerEvent::SessionIdle { properties } => {
669− if model.is_current(&properties.session_id) {
670− model.generating = false;
671− for m in &mut model.messages {
672− m.streaming = false;
677− ServerEvent::SessionError { properties } => {
678− let scoped = properties.session_id.as_deref().map_or(true, |s| model.is_current(s));
680− if let Some(err) = properties.error {
681− model.error = Some(err.message());
683− model.generating = false;
687− ServerEvent::SessionCreated { properties } | ServerEvent::SessionUpdated { properties } => {
688− let s = properties.info;
689− let view = SessionView { id: s.id.clone(), title: display_title(&s.title) };
690− if let Some(existing) = model.sessions.iter_mut().find(|e| e.id == view.id) {
691− existing.title = view.title.clone();
693− model.sessions.insert(0, view);
695− if model.is_current(&s.id) {
696− model.current_session_title = display_title(&s.title);
700− ServerEvent::SessionDeleted { properties } => {
701− let id = properties.session_id.or(properties.info.map(|i| i.id));
702− if let Some(id) = id {
703− model.sessions.retain(|s| s.id != id);
704− if model.is_current(&id) {
705− model.current_session_id = None;
706− model.messages.clear();
707− model.screen = Screen::Sessions;
712− ServerEvent::Other => {}
716−// ─── Helpers ─────────────────────────────────────────────────────────────────
718−/// `part.text` is the full current text when present; otherwise fall back to
719−/// accumulating the incremental `delta` onto whatever we already have.
720−fn pick_text(text: String, delta: &Option<String>, existing: &[(String, String)], part_id: &str) -> String {
721− if !text.is_empty() {
724− let prior = existing.iter().find(|(pid, _)| pid == part_id).map(|(_, t)| t.clone()).unwrap_or_default();
726− Some(d) => format!("{prior}{d}"),
731−fn message_from_wire(env: &WireMessageEnvelope) -> MsgState {
732− let info = &env.info;
733− let mut msg = MsgState::new(info.id.clone(), info.role.clone(), info.time.created);
734− msg.streaming = info.role == "assistant" && info.time.completed.is_none() && info.error.is_none();
735− for part in &env.parts {
737− WirePart::Text { id, text, synthetic, .. } => {
739− MsgState::upsert_part(&mut msg.text_parts, id, text.clone());
742− WirePart::Reasoning { id, text, .. } => {
743− MsgState::upsert_part(&mut msg.reasoning_parts, id, text.clone());
745− WirePart::Tool { id, tool, state, .. } => {
746− let sv = protocol::tool_state_view(state);
747− msg.upsert_tool(id, ToolView { name: tool.clone(), status: sv.status, title: sv.title });
749− WirePart::Other => {}
755−fn set_last_pending(model: &mut Model, status: MessageStatus) {
756− if let Some(msg) = model.messages.iter_mut().rev().find(|m| m.status == MessageStatus::Pending) {
757− msg.status = status;
761−/// Trim whitespace and any trailing `/` so paths concatenate cleanly, and
762−/// default to an `http://` scheme when the user didn't type one (e.g.
763−/// "192.168.1.10:4096") — otherwise the shell's URL parser rejects it.
764−fn normalize_url(url: &str) -> String {
765− let trimmed = url.trim().trim_end_matches('/');
766− if trimmed.is_empty() {
768− } else if trimmed.contains("://") {
771− format!("http://{trimmed}")
775−fn display_title(title: &str) -> String {
776− let t = title.trim();
778− "Untitled".to_string()
784−/// Reduce an [`HttpResult`] to `Ok(body)` for 2xx, or `Err(message)` otherwise.
785−fn ok_body(result: HttpResult) -> Result<String, String> {
787− Ok(mut response) => {
788− let status = response.status().as_u16();
789− if (200..300).contains(&status) {
790− Ok(response.take_body().unwrap_or_default())
792− Err(format!("Server returned status {status}"))
795− Err(e) => Err(format!("Request failed: {e}")),
799−// ─── Tests ───────────────────────────────────────────────────────────────────
805− fn app() -> OpencodeApp {
806− OpencodeApp::default()
809− /// Put the model into a connected Chat view for the given session.
810− fn in_chat(session_id: &str) -> Model {
811− let mut model = Model::default();
812− model.server_url = "http://localhost:4096".to_string();
813− model.connected = true;
814− model.screen = Screen::Chat;
815− model.current_session_id = Some(session_id.to_string());
819− fn feed(app: &OpencodeApp, model: &mut Model, json: serde_json::Value) {
820− let _ = app.update(Event::ServerEvent(json.to_string()), model);
824− fn server_url_is_kept_raw_while_typing() {
826− let mut model = Model::default();
827− // Mid-scheme input must survive verbatim — normalizing per keystroke
828− // would eat the "://" the user is typing and make the field unusable.
829− let _ = app.update(Event::ServerUrlChanged("http:/".into()), &mut model);
830− assert_eq!(app.view(&model).server_url, "http:/");
834− fn connect_normalizes_scheme_less_url() {
836− let mut model = Model::default();
837− // A scheme-less host (what a user often types) must gain http:// on
838− // connect, or the shell's URL parser throws and the attempt crashes.
839− let _ = app.update(Event::ServerUrlChanged("192.168.1.10:4096".into()), &mut model);
840− assert_eq!(app.view(&model).server_url, "192.168.1.10:4096");
841− let _ = app.update(Event::Connect, &mut model);
842− assert_eq!(app.view(&model).server_url, "http://192.168.1.10:4096");
846− fn connect_trims_and_keeps_explicit_scheme() {
848− let mut model = Model::default();
849− let _ = app.update(Event::ServerUrlChanged(" https://host:4096/ ".into()), &mut model);
850− let _ = app.update(Event::Connect, &mut model);
851− assert_eq!(app.view(&model).server_url, "https://host:4096");
855− fn connect_requires_a_url() {
857− let mut model = Model::default();
858− let _ = app.update(Event::Connect, &mut model);
859− assert_eq!(app.view(&model).error.as_deref(), Some("Enter a server URL"));
863− fn sending_adds_optimistic_user_message_and_sets_generating() {
865− let mut model = in_chat("ses_1");
866− let _ = app.update(Event::DraftChanged("hello there".into()), &mut model);
867− let _ = app.update(Event::SendMessage("hello there".into()), &mut model);
869− let view = app.view(&model);
870− assert!(view.generating);
871− assert!(view.draft.is_empty());
872− assert_eq!(view.messages.len(), 1);
873− assert_eq!(view.messages[0].role, "user");
874− assert_eq!(view.messages[0].text, "hello there");
875− assert_eq!(view.messages[0].status, MessageStatus::Pending);
879− fn empty_send_is_ignored() {
881− let mut model = in_chat("ses_1");
882− let _ = app.update(Event::SendMessage(" ".into()), &mut model);
883− assert!(app.view(&model).messages.is_empty());
884− assert!(!app.view(&model).generating);
888− fn assistant_reply_streams_in_from_sse() {
890− let mut model = in_chat("ses_1");
892− // Assistant message shell arrives first.
893− feed(&app, &mut model, serde_json::json!({
894− "type": "message.updated",
895− "properties": { "info": {
896− "id": "msg_a", "role": "assistant", "sessionID": "ses_1",
897− "time": { "created": 100 }
900− assert_eq!(app.view(&model).messages.len(), 1);
901− assert!(app.view(&model).messages[0].streaming);
903− // Two text deltas for the same part accumulate into full text.
904− feed(&app, &mut model, serde_json::json!({
905− "type": "message.part.updated",
906− "properties": { "part": {
907− "id": "prt_1", "messageID": "msg_a", "sessionID": "ses_1",
908− "type": "text", "text": "Hello"
911− feed(&app, &mut model, serde_json::json!({
912− "type": "message.part.updated",
913− "properties": { "part": {
914− "id": "prt_1", "messageID": "msg_a", "sessionID": "ses_1",
915− "type": "text", "text": "Hello, world"
919− let view = app.view(&model);
920− assert_eq!(view.messages[0].role, "assistant");
921− assert_eq!(view.messages[0].text, "Hello, world");
925− fn text_delta_accumulates_when_full_text_absent() {
927− let mut model = in_chat("ses_1");
928− feed(&app, &mut model, serde_json::json!({
929− "type": "message.updated",
930− "properties": { "info": { "id": "msg_a", "role": "assistant", "sessionID": "ses_1", "time": {"created": 1}}}
932− for delta in ["Wor", "ld"] {
933− feed(&app, &mut model, serde_json::json!({
934− "type": "message.part.updated",
936− "part": { "id": "p", "messageID": "msg_a", "sessionID": "ses_1", "type": "text", "text": "" },
941− assert_eq!(app.view(&model).messages[0].text, "World");
945− fn user_message_from_sse_is_not_duplicated() {
947− let mut model = in_chat("ses_1");
948− let _ = app.update(Event::SendMessage("hi".into()), &mut model);
949− // Server echoes the user message on the stream — must be ignored.
950− feed(&app, &mut model, serde_json::json!({
951− "type": "message.updated",
952− "properties": { "info": { "id": "msg_user", "role": "user", "sessionID": "ses_1", "time": {"created": 5}}}
954− let users = app.view(&model).messages.iter().filter(|m| m.role == "user").count();
955− assert_eq!(users, 1);
959− fn session_idle_clears_generating() {
961− let mut model = in_chat("ses_1");
962− let _ = app.update(Event::SendMessage("hi".into()), &mut model);
963− assert!(app.view(&model).generating);
964− feed(&app, &mut model, serde_json::json!({
965− "type": "session.idle", "properties": { "sessionID": "ses_1" }
967− assert!(!app.view(&model).generating);
971− fn idle_for_other_session_is_ignored() {
973− let mut model = in_chat("ses_1");
974− let _ = app.update(Event::SendMessage("hi".into()), &mut model);
975− feed(&app, &mut model, serde_json::json!({
976− "type": "session.idle", "properties": { "sessionID": "ses_other" }
978− assert!(app.view(&model).generating);
982− fn reasoning_and_tool_parts_are_surfaced() {
984− let mut model = in_chat("ses_1");
985− feed(&app, &mut model, serde_json::json!({
986− "type": "message.updated",
987− "properties": { "info": { "id": "m", "role": "assistant", "sessionID": "ses_1", "time": {"created": 1}}}
989− feed(&app, &mut model, serde_json::json!({
990− "type": "message.part.updated",
991− "properties": { "part": { "id": "r", "messageID": "m", "type": "reasoning", "text": "thinking..." }}
993− feed(&app, &mut model, serde_json::json!({
994− "type": "message.part.updated",
995− "properties": { "part": {
996− "id": "t", "messageID": "m", "type": "tool", "tool": "bash",
997− "state": { "status": "completed", "title": "ls -la" }
1000− let msg = &app.view(&model).messages[0];
1001− assert_eq!(msg.reasoning.as_deref(), Some("thinking..."));
1002− assert_eq!(msg.tools.len(), 1);
1003− assert_eq!(msg.tools[0].name, "bash");
1004− assert_eq!(msg.tools[0].status, "completed");
1005− assert_eq!(msg.tools[0].title.as_deref(), Some("ls -la"));
1009− fn session_created_event_updates_list() {
1011− let mut model = in_chat("ses_1");
1012− feed(&app, &mut model, serde_json::json!({
1013− "type": "session.created",
1014− "properties": { "info": { "id": "ses_new", "title": "Fresh" }}
1016− assert!(app.view(&model).sessions.iter().any(|s| s.id == "ses_new" && s.title == "Fresh"));
1020− fn unknown_event_types_are_ignored() {
1022− let mut model = in_chat("ses_1");
1023− feed(&app, &mut model, serde_json::json!({
1024− "type": "pty.created", "properties": { "whatever": true }
1026− feed(&app, &mut model, serde_json::json!({ "type": "totally.new.event" }));
1027− // No panic, no state change.
1028− assert!(app.view(&model).messages.is_empty());
1032− fn messages_loaded_parses_info_and_parts() {
1034− let mut model = in_chat("ses_1");
1035− let body = serde_json::json!([
1036− { "info": { "id": "m1", "role": "user", "sessionID": "ses_1", "time": {"created": 1} },
1037− "parts": [{ "id": "p1", "type": "text", "text": "Question?" }] },
1038− { "info": { "id": "m2", "role": "assistant", "sessionID": "ses_1", "time": {"created": 2, "completed": 3} },
1039− "parts": [{ "id": "p2", "type": "text", "text": "Answer." }] }
1041− let result: HttpResult = Ok(crux_http::testing::ResponseBuilder::ok().body(body).build());
1042− let _ = app.update(Event::MessagesLoaded("ses_1".into(), result), &mut model);
1044− let view = app.view(&model);
1045− assert_eq!(view.messages.len(), 2);
1046− assert_eq!(view.messages[0].text, "Question?");
1047− assert_eq!(view.messages[1].text, "Answer.");
1048− assert!(!view.messages[1].streaming);
1049− assert!(!view.generating);