limit_cli/tui/bridge/
bridge_impl.rs

1//! TUI Bridge module
2//!
3//! Bridge connecting limit-cli REPL to limit-tui components
4
5use crate::agent_bridge::{AgentBridge, AgentEvent};
6use crate::error::CliError;
7use crate::session::SessionManager;
8use crate::tui::{activity::format_activity_message, TuiState};
9use limit_tui::components::{ActivityFeed, ChatView, Message, Spinner};
10use std::sync::{Arc, Mutex};
11use tokio::sync::mpsc;
12use tracing::debug;
13
14/// Bridge connecting limit-cli REPL to limit-tui components
15pub struct TuiBridge {
16    /// Agent bridge for processing messages (wrapped for thread-safe access)
17    agent_bridge: Arc<Mutex<AgentBridge>>,
18    /// Event receiver from the agent
19    event_rx: mpsc::UnboundedReceiver<AgentEvent>,
20    /// Current TUI state
21    state: Arc<Mutex<TuiState>>,
22    /// Chat view for displaying conversation
23    chat_view: Arc<Mutex<ChatView>>,
24    /// Activity feed for showing tool activities
25    activity_feed: Arc<Mutex<ActivityFeed>>,
26    /// Spinner for thinking state
27    /// Spinner for thinking state
28    spinner: Arc<Mutex<Spinner>>,
29    /// Conversation history
30    messages: Arc<Mutex<Vec<limit_llm::Message>>>,
31    /// Total input tokens for the session
32    total_input_tokens: Arc<Mutex<u64>>,
33    /// Total output tokens for the session
34    total_output_tokens: Arc<Mutex<u64>>,
35    /// Session manager for persistence
36    session_manager: Arc<Mutex<SessionManager>>,
37    /// Current session ID
38    session_id: Arc<Mutex<String>>,
39    /// Current operation ID (to ignore events from old operations)
40    operation_id: Arc<Mutex<u64>>,
41}
42
43impl TuiBridge {
44    /// Create a new TuiBridge with the given agent bridge and event channel
45    pub fn new(
46        agent_bridge: AgentBridge,
47        event_rx: mpsc::UnboundedReceiver<AgentEvent>,
48    ) -> Result<Self, CliError> {
49        let session_manager = SessionManager::new().map_err(|e| {
50            CliError::ConfigError(format!("Failed to create session manager: {}", e))
51        })?;
52
53        Self::with_session_manager(agent_bridge, event_rx, session_manager)
54    }
55
56    /// Create a new TuiBridge for testing with a temporary session manager
57    #[cfg(test)]
58    pub fn new_for_test(
59        agent_bridge: AgentBridge,
60        event_rx: mpsc::UnboundedReceiver<AgentEvent>,
61    ) -> Result<Self, CliError> {
62        use tempfile::TempDir;
63
64        // Create a temporary directory for the test
65        let temp_dir = TempDir::new().map_err(|e| {
66            CliError::ConfigError(format!("Failed to create temp directory: {}", e))
67        })?;
68
69        let db_path = temp_dir.path().join("session.db");
70        let sessions_dir = temp_dir.path().join("sessions");
71
72        let session_manager = SessionManager::with_paths(db_path, sessions_dir).map_err(|e| {
73            CliError::ConfigError(format!("Failed to create session manager: {}", e))
74        })?;
75
76        Self::with_session_manager(agent_bridge, event_rx, session_manager)
77    }
78
79    /// Create a new TuiBridge with a custom session manager
80    pub fn with_session_manager(
81        agent_bridge: AgentBridge,
82        event_rx: mpsc::UnboundedReceiver<AgentEvent>,
83        session_manager: SessionManager,
84    ) -> Result<Self, CliError> {
85        // Always create a new session on TUI startup
86        let session_id = session_manager
87            .create_new_session()
88            .map_err(|e| CliError::ConfigError(format!("Failed to create session: {}", e)))?;
89        tracing::info!("Created new TUI session: {}", session_id);
90
91        // Start with empty messages - never load previous session
92        let messages: Vec<limit_llm::Message> = Vec::new();
93
94        // Get token counts from session info
95        let sessions = session_manager.list_sessions().unwrap_or_default();
96        let session_info = sessions.iter().find(|s| s.id == session_id);
97        let initial_input = session_info.map(|s| s.total_input_tokens).unwrap_or(0);
98        let initial_output = session_info.map(|s| s.total_output_tokens).unwrap_or(0);
99
100        let chat_view = Arc::new(Mutex::new(ChatView::new()));
101
102        // Add loaded messages to chat view for display
103        for msg in &messages {
104            match msg.role {
105                limit_llm::Role::User => {
106                    let chat_msg = Message::user(msg.content.clone().unwrap_or_default());
107                    chat_view.lock().unwrap().add_message(chat_msg);
108                }
109                limit_llm::Role::Assistant => {
110                    let content = msg.content.clone().unwrap_or_default();
111                    let chat_msg = Message::assistant(content);
112                    chat_view.lock().unwrap().add_message(chat_msg);
113                }
114                limit_llm::Role::System => {
115                    // Skip system messages in display
116                }
117                limit_llm::Role::Tool => {
118                    // Skip tool messages in display
119                }
120            }
121        }
122
123        tracing::info!("Loaded {} messages into chat view", messages.len());
124
125        // Add system message to indicate this is a new session
126        let session_short_id = format!("...{}", &session_id[session_id.len().saturating_sub(8)..]);
127        let welcome_msg =
128            Message::system(format!("🆕 New TUI session started: {}", session_short_id));
129        chat_view.lock().unwrap().add_message(welcome_msg);
130
131        // Add model info as system message
132        let model_name = agent_bridge.model().to_string();
133        if !model_name.is_empty() {
134            let model_msg = Message::system(format!("Using model: {}", model_name));
135            chat_view.lock().unwrap().add_message(model_msg);
136        }
137
138        Ok(Self {
139            agent_bridge: Arc::new(Mutex::new(agent_bridge)),
140            event_rx,
141            state: Arc::new(Mutex::new(TuiState::Idle)),
142            chat_view,
143            activity_feed: Arc::new(Mutex::new(ActivityFeed::new())),
144            spinner: Arc::new(Mutex::new(Spinner::new("Thinking..."))),
145            messages: Arc::new(Mutex::new(messages)),
146            total_input_tokens: Arc::new(Mutex::new(initial_input)),
147            total_output_tokens: Arc::new(Mutex::new(initial_output)),
148            session_manager: Arc::new(Mutex::new(session_manager)),
149            session_id: Arc::new(Mutex::new(session_id)),
150            operation_id: Arc::new(Mutex::new(0)),
151        })
152    }
153
154    /// Get a clone of the agent bridge Arc for spawning tasks
155    pub fn agent_bridge_arc(&self) -> Arc<Mutex<AgentBridge>> {
156        self.agent_bridge.clone()
157    }
158
159    /// Get locked access to the agent bridge (for compatibility)
160    #[allow(dead_code)]
161    pub fn agent_bridge(&self) -> std::sync::MutexGuard<'_, AgentBridge> {
162        self.agent_bridge.lock().unwrap()
163    }
164
165    /// Get the current TUI state
166    pub fn state(&self) -> TuiState {
167        self.state.lock().unwrap().clone()
168    }
169
170    /// Get a reference to the chat view
171    pub fn chat_view(&self) -> &Arc<Mutex<ChatView>> {
172        &self.chat_view
173    }
174
175    /// Get a reference to the spinner
176    pub fn spinner(&self) -> &Arc<Mutex<Spinner>> {
177        &self.spinner
178    }
179
180    /// Get a reference to the activity feed
181    pub fn activity_feed(&self) -> &Arc<Mutex<ActivityFeed>> {
182        &self.activity_feed
183    }
184
185    /// Process events from the agent and update TUI state
186    pub fn process_events(&mut self) -> Result<(), CliError> {
187        let mut event_count = 0;
188        let current_op_id = self.operation_id();
189
190        while let Ok(event) = self.event_rx.try_recv() {
191            event_count += 1;
192
193            // Get operation_id from event
194            let event_op_id = match &event {
195                AgentEvent::Thinking { operation_id } => *operation_id,
196                AgentEvent::ToolStart { operation_id, .. } => *operation_id,
197                AgentEvent::ToolComplete { operation_id, .. } => *operation_id,
198                AgentEvent::ContentChunk { operation_id, .. } => *operation_id,
199                AgentEvent::Done { operation_id } => *operation_id,
200                AgentEvent::Cancelled { operation_id } => *operation_id,
201                AgentEvent::Error { operation_id, .. } => *operation_id,
202                AgentEvent::TokenUsage { operation_id, .. } => *operation_id,
203            };
204
205            debug!(
206                "process_events: event_op_id={}, current_op_id={}, event={:?}",
207                event_op_id,
208                current_op_id,
209                std::mem::discriminant(&event)
210            );
211
212            // Ignore events from old operations
213            if event_op_id != current_op_id {
214                debug!(
215                    "process_events: Ignoring event from old operation {} (current: {})",
216                    event_op_id, current_op_id
217                );
218                continue;
219            }
220
221            match event {
222                AgentEvent::Thinking { operation_id: _ } => {
223                    debug!("process_events: Thinking event received - setting state to Thinking",);
224                    *self.state.lock().unwrap() = TuiState::Thinking;
225                    debug!("process_events: state is now {:?}", self.state());
226                }
227                AgentEvent::ToolStart {
228                    operation_id: _,
229                    name,
230                    args,
231                } => {
232                    debug!("process_events: ToolStart event - {}", name);
233                    let activity_msg = format_activity_message(&name, &args);
234                    // Add to activity feed instead of changing state
235                    self.activity_feed.lock().unwrap().add(activity_msg, true);
236                }
237                AgentEvent::ToolComplete {
238                    operation_id: _,
239                    name: _,
240                    result: _,
241                } => {
242                    debug!("process_events: ToolComplete event");
243                    // Mark current activity as complete
244                    self.activity_feed.lock().unwrap().complete_current();
245                }
246                AgentEvent::ContentChunk {
247                    operation_id: _,
248                    chunk,
249                } => {
250                    debug!("process_events: ContentChunk event ({} chars)", chunk.len());
251                    self.chat_view
252                        .lock()
253                        .unwrap()
254                        .append_to_last_assistant(&chunk);
255                }
256                AgentEvent::Done { operation_id: _ } => {
257                    debug!("process_events: Done event received");
258                    *self.state.lock().unwrap() = TuiState::Idle;
259                    // Mark all activities as complete when LLM finishes
260                    self.activity_feed.lock().unwrap().complete_all();
261                }
262                AgentEvent::Cancelled { operation_id: _ } => {
263                    debug!("process_events: Cancelled event received");
264                    *self.state.lock().unwrap() = TuiState::Idle;
265                    // Mark all activities as complete
266                    self.activity_feed.lock().unwrap().complete_all();
267                }
268                AgentEvent::Error {
269                    operation_id: _,
270                    message,
271                } => {
272                    debug!("process_events: Error event - {}", message);
273                    // Reset state to Idle so user can continue
274                    *self.state.lock().unwrap() = TuiState::Idle;
275                    let chat_msg = Message::system(format!("Error: {}", message));
276                    self.chat_view.lock().unwrap().add_message(chat_msg);
277                }
278                AgentEvent::TokenUsage {
279                    operation_id: _,
280                    input_tokens,
281                    output_tokens,
282                } => {
283                    debug!(
284                        "process_events: TokenUsage event - in={}, out={}",
285                        input_tokens, output_tokens
286                    );
287                    // Accumulate token counts for display
288                    *self.total_input_tokens.lock().unwrap() += input_tokens;
289                    *self.total_output_tokens.lock().unwrap() += output_tokens;
290                }
291            }
292        }
293        if event_count > 0 {
294            debug!("process_events: processed {} events", event_count);
295        }
296        Ok(())
297    }
298
299    /// Add a user message to the chat
300    pub fn add_user_message(&self, content: String) {
301        let msg = Message::user(content);
302        self.chat_view.lock().unwrap().add_message(msg);
303    }
304
305    /// Tick the spinner animation
306    pub fn tick_spinner(&self) {
307        self.spinner.lock().unwrap().tick();
308    }
309
310    /// Check if agent is busy
311    pub fn is_busy(&self) -> bool {
312        !matches!(self.state(), TuiState::Idle)
313    }
314
315    /// Get current operation ID
316    #[inline]
317    pub fn operation_id(&self) -> u64 {
318        *self.operation_id.lock().unwrap_or_else(|e| e.into_inner())
319    }
320
321    /// Increment and get new operation ID
322    pub fn next_operation_id(&self) -> u64 {
323        let mut id = self.operation_id.lock().unwrap_or_else(|e| e.into_inner());
324        *id += 1;
325        *id
326    }
327
328    /// Get total input tokens for the session
329    #[inline]
330    pub fn total_input_tokens(&self) -> u64 {
331        *self
332            .total_input_tokens
333            .lock()
334            .unwrap_or_else(|e| e.into_inner())
335    }
336
337    /// Get total output tokens for the session
338    #[inline]
339    pub fn total_output_tokens(&self) -> u64 {
340        *self
341            .total_output_tokens
342            .lock()
343            .unwrap_or_else(|e| e.into_inner())
344    }
345
346    /// Get the current session ID
347    pub fn session_id(&self) -> String {
348        self.session_id
349            .lock()
350            .map(|guard| guard.clone())
351            .unwrap_or_else(|_| String::from("unknown"))
352    }
353
354    /// Save the current session
355    pub fn save_session(&self) -> Result<(), CliError> {
356        let session_id = self
357            .session_id
358            .lock()
359            .map(|guard| guard.clone())
360            .unwrap_or_else(|_| String::from("unknown"));
361
362        let messages = self
363            .messages
364            .lock()
365            .map(|guard| guard.clone())
366            .unwrap_or_default();
367
368        let input_tokens = self
369            .total_input_tokens
370            .lock()
371            .map(|guard| *guard)
372            .unwrap_or(0);
373
374        let output_tokens = self
375            .total_output_tokens
376            .lock()
377            .map(|guard| *guard)
378            .unwrap_or(0);
379
380        tracing::debug!(
381            "Saving session {} with {} messages, {} in tokens, {} out tokens",
382            session_id,
383            messages.len(),
384            input_tokens,
385            output_tokens
386        );
387
388        let session_manager = self.session_manager.lock().map_err(|e| {
389            CliError::ConfigError(format!("Failed to acquire session manager lock: {}", e))
390        })?;
391
392        session_manager.save_session(&session_id, &messages, input_tokens, output_tokens)?;
393        tracing::info!(
394            "✓ Session {} saved successfully ({} messages, {} in tokens, {} out tokens)",
395            session_id,
396            messages.len(),
397            input_tokens,
398            output_tokens
399        );
400        Ok(())
401    }
402
403    /// Get session manager (for command handling)
404    pub fn session_manager(&self) -> Arc<Mutex<SessionManager>> {
405        self.session_manager.clone()
406    }
407
408    /// Get messages arc (for command handling)
409    pub fn messages(&self) -> Arc<Mutex<Vec<limit_llm::Message>>> {
410        self.messages.clone()
411    }
412
413    /// Get state arc (for command handling)
414    pub fn state_arc(&self) -> Arc<Mutex<TuiState>> {
415        self.state.clone()
416    }
417
418    /// Get total input tokens arc (for command handling)
419    pub fn total_input_tokens_arc(&self) -> Arc<Mutex<u64>> {
420        self.total_input_tokens.clone()
421    }
422
423    /// Get total output tokens arc (for command handling)
424    pub fn total_output_tokens_arc(&self) -> Arc<Mutex<u64>> {
425        self.total_output_tokens.clone()
426    }
427
428    /// Get session id arc (for command handling)
429    pub fn session_id_arc(&self) -> Arc<Mutex<String>> {
430        self.session_id.clone()
431    }
432
433    /// Set state (for cancellation)
434    pub fn set_state(&self, new_state: TuiState) {
435        *self.state.lock().unwrap() = new_state;
436    }
437}
438
439#[cfg(test)]
440mod tests {
441    use super::*;
442
443    /// Create a test config for AgentBridge
444    fn create_test_config() -> limit_llm::Config {
445        use limit_llm::{BrowserConfigSection, ProviderConfig};
446        let mut providers = std::collections::HashMap::new();
447        providers.insert(
448            "anthropic".to_string(),
449            ProviderConfig {
450                api_key: Some("test-key".to_string()),
451                model: "claude-3-5-sonnet-20241022".to_string(),
452                base_url: None,
453                max_tokens: 4096,
454                timeout: 60,
455                max_iterations: 100,
456                thinking_enabled: false,
457                clear_thinking: true,
458            },
459        );
460        limit_llm::Config {
461            provider: "anthropic".to_string(),
462            providers,
463            browser: BrowserConfigSection::default(),
464        }
465    }
466
467    #[test]
468    fn test_tui_bridge_new() {
469        let config = create_test_config();
470        let agent_bridge = AgentBridge::new(config).unwrap();
471        let (_tx, rx) = mpsc::unbounded_channel();
472
473        let tui_bridge = TuiBridge::new(agent_bridge, rx).unwrap();
474        assert_eq!(tui_bridge.state(), TuiState::Idle);
475    }
476
477    #[test]
478    fn test_tui_bridge_state() {
479        let config = create_test_config();
480        let agent_bridge = AgentBridge::new(config).unwrap();
481        let (tx, rx) = mpsc::unbounded_channel();
482
483        let mut tui_bridge = TuiBridge::new(agent_bridge, rx).unwrap();
484
485        let op_id = tui_bridge.operation_id();
486        tx.send(AgentEvent::Thinking {
487            operation_id: op_id,
488        })
489        .unwrap();
490        tui_bridge.process_events().unwrap();
491        assert!(matches!(tui_bridge.state(), TuiState::Thinking));
492
493        tx.send(AgentEvent::Done {
494            operation_id: op_id,
495        })
496        .unwrap();
497        tui_bridge.process_events().unwrap();
498        assert_eq!(tui_bridge.state(), TuiState::Idle);
499    }
500
501    #[test]
502    fn test_tui_bridge_chat_view() {
503        let config = create_test_config();
504        let agent_bridge = AgentBridge::new(config).unwrap();
505        let (_tx, rx) = mpsc::unbounded_channel();
506
507        let tui_bridge = TuiBridge::new(agent_bridge, rx).unwrap();
508
509        tui_bridge.add_user_message("Hello".to_string());
510        assert_eq!(tui_bridge.chat_view().lock().unwrap().message_count(), 3); // 1 user + 2 system (welcome + model)
511    }
512}
limit_cli/tui/bridge/bridge_impl.rs

limit_cli/tui/bridge/
bridge_impl.rs
