1use crate::{DbThread, DbThreadMetadata, ThreadsDatabase};
2use acp_thread::MentionUri;
3use agent_client_protocol as acp;
4use anyhow::{Context as _, Result, anyhow};
5use assistant_text_thread::{SavedTextThreadMetadata, TextThread};
6use chrono::{DateTime, Utc};
7use db::kvp::KEY_VALUE_STORE;
8use gpui::{App, AsyncApp, Entity, SharedString, Task, prelude::*};
9use itertools::Itertools;
10use paths::text_threads_dir;
11use project::Project;
12use serde::{Deserialize, Serialize};
13use std::{collections::VecDeque, path::Path, rc::Rc, sync::Arc, time::Duration};
14use ui::ElementId;
15use util::ResultExt as _;
16
17const MAX_RECENTLY_OPENED_ENTRIES: usize = 6;
18const RECENTLY_OPENED_THREADS_KEY: &str = "recent-agent-threads";
19const SAVE_RECENTLY_OPENED_ENTRIES_DEBOUNCE: Duration = Duration::from_millis(50);
20
21const DEFAULT_TITLE: &SharedString = &SharedString::new_static("New Thread");
22
23//todo: We should remove this function once we support loading all acp thread
24pub fn load_agent_thread(
25 session_id: acp::SessionId,
26 history_store: Entity<HistoryStore>,
27 project: Entity<Project>,
28 cx: &mut App,
29) -> Task<Result<Entity<crate::Thread>>> {
30 use agent_servers::{AgentServer, AgentServerDelegate};
31
32 let server = Rc::new(crate::NativeAgentServer::new(
33 project.read(cx).fs().clone(),
34 history_store,
35 ));
36 let delegate = AgentServerDelegate::new(
37 project.read(cx).agent_server_store().clone(),
38 project.clone(),
39 None,
40 None,
41 );
42 let connection = server.connect(None, delegate, cx);
43 cx.spawn(async move |cx| {
44 let (agent, _) = connection.await?;
45 let agent = agent.downcast::<crate::NativeAgentConnection>().unwrap();
46 cx.update(|cx| agent.load_thread(session_id, cx))?.await
47 })
48}
49
50#[derive(Clone, Debug)]
51pub enum HistoryEntry {
52 AcpThread(DbThreadMetadata),
53 TextThread(SavedTextThreadMetadata),
54}
55
56impl HistoryEntry {
57 pub fn updated_at(&self) -> DateTime<Utc> {
58 match self {
59 HistoryEntry::AcpThread(thread) => thread.updated_at,
60 HistoryEntry::TextThread(text_thread) => text_thread.mtime.to_utc(),
61 }
62 }
63
64 pub fn id(&self) -> HistoryEntryId {
65 match self {
66 HistoryEntry::AcpThread(thread) => HistoryEntryId::AcpThread(thread.id.clone()),
67 HistoryEntry::TextThread(text_thread) => {
68 HistoryEntryId::TextThread(text_thread.path.clone())
69 }
70 }
71 }
72
73 pub fn mention_uri(&self) -> MentionUri {
74 match self {
75 HistoryEntry::AcpThread(thread) => MentionUri::Thread {
76 id: thread.id.clone(),
77 name: thread.title.to_string(),
78 },
79 HistoryEntry::TextThread(text_thread) => MentionUri::TextThread {
80 path: text_thread.path.as_ref().to_owned(),
81 name: text_thread.title.to_string(),
82 },
83 }
84 }
85
86 pub fn title(&self) -> &SharedString {
87 match self {
88 HistoryEntry::AcpThread(thread) => {
89 if thread.title.is_empty() {
90 DEFAULT_TITLE
91 } else {
92 &thread.title
93 }
94 }
95 HistoryEntry::TextThread(text_thread) => &text_thread.title,
96 }
97 }
98}
99
100/// Generic identifier for a history entry.
101#[derive(Clone, PartialEq, Eq, Debug, Hash)]
102pub enum HistoryEntryId {
103 AcpThread(acp::SessionId),
104 TextThread(Arc<Path>),
105}
106
107impl Into<ElementId> for HistoryEntryId {
108 fn into(self) -> ElementId {
109 match self {
110 HistoryEntryId::AcpThread(session_id) => ElementId::Name(session_id.0.into()),
111 HistoryEntryId::TextThread(path) => ElementId::Path(path),
112 }
113 }
114}
115
116#[derive(Serialize, Deserialize, Debug)]
117enum SerializedRecentOpen {
118 AcpThread(String),
119 TextThread(String),
120}
121
122pub struct HistoryStore {
123 threads: Vec<DbThreadMetadata>,
124 entries: Vec<HistoryEntry>,
125 text_thread_store: Entity<assistant_text_thread::TextThreadStore>,
126 recently_opened_entries: VecDeque<HistoryEntryId>,
127 _subscriptions: Vec<gpui::Subscription>,
128 _save_recently_opened_entries_task: Task<()>,
129}
130
131impl HistoryStore {
132 pub fn new(
133 text_thread_store: Entity<assistant_text_thread::TextThreadStore>,
134 cx: &mut Context<Self>,
135 ) -> Self {
136 let subscriptions =
137 vec![cx.observe(&text_thread_store, |this, _, cx| this.update_entries(cx))];
138
139 cx.spawn(async move |this, cx| {
140 let entries = Self::load_recently_opened_entries(cx).await;
141 this.update(cx, |this, cx| {
142 if let Some(entries) = entries.log_err() {
143 this.recently_opened_entries = entries;
144 }
145
146 this.reload(cx);
147 })
148 .ok();
149 })
150 .detach();
151
152 Self {
153 text_thread_store,
154 recently_opened_entries: VecDeque::default(),
155 threads: Vec::default(),
156 entries: Vec::default(),
157 _subscriptions: subscriptions,
158 _save_recently_opened_entries_task: Task::ready(()),
159 }
160 }
161
162 pub fn thread_from_session_id(&self, session_id: &acp::SessionId) -> Option<&DbThreadMetadata> {
163 self.threads.iter().find(|thread| &thread.id == session_id)
164 }
165
166 pub fn load_thread(
167 &mut self,
168 id: acp::SessionId,
169 cx: &mut Context<Self>,
170 ) -> Task<Result<Option<DbThread>>> {
171 let database_future = ThreadsDatabase::connect(cx);
172 cx.background_spawn(async move {
173 let database = database_future.await.map_err(|err| anyhow!(err))?;
174 database.load_thread(id).await
175 })
176 }
177
178 pub fn delete_thread(
179 &mut self,
180 id: acp::SessionId,
181 cx: &mut Context<Self>,
182 ) -> Task<Result<()>> {
183 let database_future = ThreadsDatabase::connect(cx);
184 cx.spawn(async move |this, cx| {
185 let database = database_future.await.map_err(|err| anyhow!(err))?;
186 database.delete_thread(id.clone()).await?;
187 this.update(cx, |this, cx| this.reload(cx))
188 })
189 }
190
191 pub fn delete_threads(&mut self, cx: &mut Context<Self>) -> Task<Result<()>> {
192 let database_future = ThreadsDatabase::connect(cx);
193 cx.spawn(async move |this, cx| {
194 let database = database_future.await.map_err(|err| anyhow!(err))?;
195 database.delete_threads().await?;
196 this.update(cx, |this, cx| this.reload(cx))
197 })
198 }
199
200 pub fn delete_text_thread(
201 &mut self,
202 path: Arc<Path>,
203 cx: &mut Context<Self>,
204 ) -> Task<Result<()>> {
205 self.text_thread_store
206 .update(cx, |store, cx| store.delete_local(path, cx))
207 }
208
209 pub fn load_text_thread(
210 &self,
211 path: Arc<Path>,
212 cx: &mut Context<Self>,
213 ) -> Task<Result<Entity<TextThread>>> {
214 self.text_thread_store
215 .update(cx, |store, cx| store.open_local(path, cx))
216 }
217
218 pub fn reload(&self, cx: &mut Context<Self>) {
219 let database_connection = ThreadsDatabase::connect(cx);
220 cx.spawn(async move |this, cx| {
221 let database = database_connection.await;
222 let threads = database.map_err(|err| anyhow!(err))?.list_threads().await?;
223 this.update(cx, |this, cx| {
224 if this.recently_opened_entries.len() < MAX_RECENTLY_OPENED_ENTRIES {
225 for thread in threads
226 .iter()
227 .take(MAX_RECENTLY_OPENED_ENTRIES - this.recently_opened_entries.len())
228 .rev()
229 {
230 this.push_recently_opened_entry(
231 HistoryEntryId::AcpThread(thread.id.clone()),
232 cx,
233 )
234 }
235 }
236 this.threads = threads;
237 this.update_entries(cx);
238 })
239 })
240 .detach_and_log_err(cx);
241 }
242
243 fn update_entries(&mut self, cx: &mut Context<Self>) {
244 #[cfg(debug_assertions)]
245 if std::env::var("ZED_SIMULATE_NO_THREAD_HISTORY").is_ok() {
246 return;
247 }
248 let mut history_entries = Vec::new();
249 history_entries.extend(self.threads.iter().cloned().map(HistoryEntry::AcpThread));
250 history_entries.extend(
251 self.text_thread_store
252 .read(cx)
253 .unordered_text_threads()
254 .cloned()
255 .map(HistoryEntry::TextThread),
256 );
257
258 history_entries.sort_unstable_by_key(|entry| std::cmp::Reverse(entry.updated_at()));
259 self.entries = history_entries;
260 cx.notify()
261 }
262
263 pub fn is_empty(&self, _cx: &App) -> bool {
264 self.entries.is_empty()
265 }
266
267 pub fn recently_opened_entries(&self, cx: &App) -> Vec<HistoryEntry> {
268 #[cfg(debug_assertions)]
269 if std::env::var("ZED_SIMULATE_NO_THREAD_HISTORY").is_ok() {
270 return Vec::new();
271 }
272
273 let thread_entries = self.threads.iter().flat_map(|thread| {
274 self.recently_opened_entries
275 .iter()
276 .enumerate()
277 .flat_map(|(index, entry)| match entry {
278 HistoryEntryId::AcpThread(id) if &thread.id == id => {
279 Some((index, HistoryEntry::AcpThread(thread.clone())))
280 }
281 _ => None,
282 })
283 });
284
285 let context_entries = self
286 .text_thread_store
287 .read(cx)
288 .unordered_text_threads()
289 .flat_map(|text_thread| {
290 self.recently_opened_entries
291 .iter()
292 .enumerate()
293 .flat_map(|(index, entry)| match entry {
294 HistoryEntryId::TextThread(path) if &text_thread.path == path => {
295 Some((index, HistoryEntry::TextThread(text_thread.clone())))
296 }
297 _ => None,
298 })
299 });
300
301 thread_entries
302 .chain(context_entries)
303 // optimization to halt iteration early
304 .take(self.recently_opened_entries.len())
305 .sorted_unstable_by_key(|(index, _)| *index)
306 .map(|(_, entry)| entry)
307 .collect()
308 }
309
310 fn save_recently_opened_entries(&mut self, cx: &mut Context<Self>) {
311 let serialized_entries = self
312 .recently_opened_entries
313 .iter()
314 .filter_map(|entry| match entry {
315 HistoryEntryId::TextThread(path) => path.file_name().map(|file| {
316 SerializedRecentOpen::TextThread(file.to_string_lossy().into_owned())
317 }),
318 HistoryEntryId::AcpThread(id) => {
319 Some(SerializedRecentOpen::AcpThread(id.to_string()))
320 }
321 })
322 .collect::<Vec<_>>();
323
324 self._save_recently_opened_entries_task = cx.spawn(async move |_, cx| {
325 let content = serde_json::to_string(&serialized_entries).unwrap();
326 cx.background_executor()
327 .timer(SAVE_RECENTLY_OPENED_ENTRIES_DEBOUNCE)
328 .await;
329
330 if cfg!(any(feature = "test-support", test)) {
331 return;
332 }
333 KEY_VALUE_STORE
334 .write_kvp(RECENTLY_OPENED_THREADS_KEY.to_owned(), content)
335 .await
336 .log_err();
337 });
338 }
339
340 fn load_recently_opened_entries(cx: &AsyncApp) -> Task<Result<VecDeque<HistoryEntryId>>> {
341 cx.background_spawn(async move {
342 if cfg!(any(feature = "test-support", test)) {
343 log::warn!("history store does not persist in tests");
344 return Ok(VecDeque::new());
345 }
346 let json = KEY_VALUE_STORE
347 .read_kvp(RECENTLY_OPENED_THREADS_KEY)?
348 .unwrap_or("[]".to_string());
349 let entries = serde_json::from_str::<Vec<SerializedRecentOpen>>(&json)
350 .context("deserializing persisted agent panel navigation history")?
351 .into_iter()
352 .take(MAX_RECENTLY_OPENED_ENTRIES)
353 .flat_map(|entry| match entry {
354 SerializedRecentOpen::AcpThread(id) => {
355 Some(HistoryEntryId::AcpThread(acp::SessionId::new(id.as_str())))
356 }
357 SerializedRecentOpen::TextThread(file_name) => Some(
358 HistoryEntryId::TextThread(text_threads_dir().join(file_name).into()),
359 ),
360 })
361 .collect();
362 Ok(entries)
363 })
364 }
365
366 pub fn push_recently_opened_entry(&mut self, entry: HistoryEntryId, cx: &mut Context<Self>) {
367 self.recently_opened_entries
368 .retain(|old_entry| old_entry != &entry);
369 self.recently_opened_entries.push_front(entry);
370 self.recently_opened_entries
371 .truncate(MAX_RECENTLY_OPENED_ENTRIES);
372 self.save_recently_opened_entries(cx);
373 }
374
375 pub fn remove_recently_opened_thread(&mut self, id: acp::SessionId, cx: &mut Context<Self>) {
376 self.recently_opened_entries.retain(
377 |entry| !matches!(entry, HistoryEntryId::AcpThread(thread_id) if thread_id == &id),
378 );
379 self.save_recently_opened_entries(cx);
380 }
381
382 pub fn replace_recently_opened_text_thread(
383 &mut self,
384 old_path: &Path,
385 new_path: &Arc<Path>,
386 cx: &mut Context<Self>,
387 ) {
388 for entry in &mut self.recently_opened_entries {
389 match entry {
390 HistoryEntryId::TextThread(path) if path.as_ref() == old_path => {
391 *entry = HistoryEntryId::TextThread(new_path.clone());
392 break;
393 }
394 _ => {}
395 }
396 }
397 self.save_recently_opened_entries(cx);
398 }
399
400 pub fn remove_recently_opened_entry(&mut self, entry: &HistoryEntryId, cx: &mut Context<Self>) {
401 self.recently_opened_entries
402 .retain(|old_entry| old_entry != entry);
403 self.save_recently_opened_entries(cx);
404 }
405
406 pub fn entries(&self) -> impl Iterator<Item = HistoryEntry> {
407 self.entries.iter().cloned()
408 }
409}