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_future = ThreadsDatabase::connect(cx);
220 cx.spawn(async move |this, cx| {
221 let threads = database_future
222 .await
223 .map_err(|err| anyhow!(err))?
224 .list_threads()
225 .await?;
226
227 this.update(cx, |this, cx| {
228 if this.recently_opened_entries.len() < MAX_RECENTLY_OPENED_ENTRIES {
229 for thread in threads
230 .iter()
231 .take(MAX_RECENTLY_OPENED_ENTRIES - this.recently_opened_entries.len())
232 .rev()
233 {
234 this.push_recently_opened_entry(
235 HistoryEntryId::AcpThread(thread.id.clone()),
236 cx,
237 )
238 }
239 }
240 this.threads = threads;
241 this.update_entries(cx);
242 })
243 })
244 .detach_and_log_err(cx);
245 }
246
247 fn update_entries(&mut self, cx: &mut Context<Self>) {
248 #[cfg(debug_assertions)]
249 if std::env::var("ZED_SIMULATE_NO_THREAD_HISTORY").is_ok() {
250 return;
251 }
252 let mut history_entries = Vec::new();
253 history_entries.extend(self.threads.iter().cloned().map(HistoryEntry::AcpThread));
254 history_entries.extend(
255 self.text_thread_store
256 .read(cx)
257 .unordered_text_threads()
258 .cloned()
259 .map(HistoryEntry::TextThread),
260 );
261
262 history_entries.sort_unstable_by_key(|entry| std::cmp::Reverse(entry.updated_at()));
263 self.entries = history_entries;
264 cx.notify()
265 }
266
267 pub fn is_empty(&self, _cx: &App) -> bool {
268 self.entries.is_empty()
269 }
270
271 pub fn recently_opened_entries(&self, cx: &App) -> Vec<HistoryEntry> {
272 #[cfg(debug_assertions)]
273 if std::env::var("ZED_SIMULATE_NO_THREAD_HISTORY").is_ok() {
274 return Vec::new();
275 }
276
277 let thread_entries = self.threads.iter().flat_map(|thread| {
278 self.recently_opened_entries
279 .iter()
280 .enumerate()
281 .flat_map(|(index, entry)| match entry {
282 HistoryEntryId::AcpThread(id) if &thread.id == id => {
283 Some((index, HistoryEntry::AcpThread(thread.clone())))
284 }
285 _ => None,
286 })
287 });
288
289 let context_entries = self
290 .text_thread_store
291 .read(cx)
292 .unordered_text_threads()
293 .flat_map(|text_thread| {
294 self.recently_opened_entries
295 .iter()
296 .enumerate()
297 .flat_map(|(index, entry)| match entry {
298 HistoryEntryId::TextThread(path) if &text_thread.path == path => {
299 Some((index, HistoryEntry::TextThread(text_thread.clone())))
300 }
301 _ => None,
302 })
303 });
304
305 thread_entries
306 .chain(context_entries)
307 // optimization to halt iteration early
308 .take(self.recently_opened_entries.len())
309 .sorted_unstable_by_key(|(index, _)| *index)
310 .map(|(_, entry)| entry)
311 .collect()
312 }
313
314 fn save_recently_opened_entries(&mut self, cx: &mut Context<Self>) {
315 let serialized_entries = self
316 .recently_opened_entries
317 .iter()
318 .filter_map(|entry| match entry {
319 HistoryEntryId::TextThread(path) => path.file_name().map(|file| {
320 SerializedRecentOpen::TextThread(file.to_string_lossy().into_owned())
321 }),
322 HistoryEntryId::AcpThread(id) => {
323 Some(SerializedRecentOpen::AcpThread(id.to_string()))
324 }
325 })
326 .collect::<Vec<_>>();
327
328 self._save_recently_opened_entries_task = cx.spawn(async move |_, cx| {
329 let content = serde_json::to_string(&serialized_entries).unwrap();
330 cx.background_executor()
331 .timer(SAVE_RECENTLY_OPENED_ENTRIES_DEBOUNCE)
332 .await;
333
334 if cfg!(any(feature = "test-support", test)) {
335 return;
336 }
337 KEY_VALUE_STORE
338 .write_kvp(RECENTLY_OPENED_THREADS_KEY.to_owned(), content)
339 .await
340 .log_err();
341 });
342 }
343
344 fn load_recently_opened_entries(cx: &AsyncApp) -> Task<Result<VecDeque<HistoryEntryId>>> {
345 cx.background_spawn(async move {
346 if cfg!(any(feature = "test-support", test)) {
347 anyhow::bail!("history store does not persist in tests");
348 }
349 let json = KEY_VALUE_STORE
350 .read_kvp(RECENTLY_OPENED_THREADS_KEY)?
351 .unwrap_or("[]".to_string());
352 let entries = serde_json::from_str::<Vec<SerializedRecentOpen>>(&json)
353 .context("deserializing persisted agent panel navigation history")?
354 .into_iter()
355 .take(MAX_RECENTLY_OPENED_ENTRIES)
356 .flat_map(|entry| match entry {
357 SerializedRecentOpen::AcpThread(id) => Some(HistoryEntryId::AcpThread(
358 acp::SessionId(id.as_str().into()),
359 )),
360 SerializedRecentOpen::TextThread(file_name) => Some(
361 HistoryEntryId::TextThread(text_threads_dir().join(file_name).into()),
362 ),
363 })
364 .collect();
365 Ok(entries)
366 })
367 }
368
369 pub fn push_recently_opened_entry(&mut self, entry: HistoryEntryId, cx: &mut Context<Self>) {
370 self.recently_opened_entries
371 .retain(|old_entry| old_entry != &entry);
372 self.recently_opened_entries.push_front(entry);
373 self.recently_opened_entries
374 .truncate(MAX_RECENTLY_OPENED_ENTRIES);
375 self.save_recently_opened_entries(cx);
376 }
377
378 pub fn remove_recently_opened_thread(&mut self, id: acp::SessionId, cx: &mut Context<Self>) {
379 self.recently_opened_entries.retain(
380 |entry| !matches!(entry, HistoryEntryId::AcpThread(thread_id) if thread_id == &id),
381 );
382 self.save_recently_opened_entries(cx);
383 }
384
385 pub fn replace_recently_opened_text_thread(
386 &mut self,
387 old_path: &Path,
388 new_path: &Arc<Path>,
389 cx: &mut Context<Self>,
390 ) {
391 for entry in &mut self.recently_opened_entries {
392 match entry {
393 HistoryEntryId::TextThread(path) if path.as_ref() == old_path => {
394 *entry = HistoryEntryId::TextThread(new_path.clone());
395 break;
396 }
397 _ => {}
398 }
399 }
400 self.save_recently_opened_entries(cx);
401 }
402
403 pub fn remove_recently_opened_entry(&mut self, entry: &HistoryEntryId, cx: &mut Context<Self>) {
404 self.recently_opened_entries
405 .retain(|old_entry| old_entry != entry);
406 self.save_recently_opened_entries(cx);
407 }
408
409 pub fn entries(&self) -> impl Iterator<Item = HistoryEntry> {
410 self.entries.iter().cloned()
411 }
412}