1mod headless;
2
3use anyhow::{Result, anyhow};
4use clap::{Args, Parser, Subcommand};
5use futures::channel::mpsc;
6use futures::{FutureExt as _, StreamExt as _};
7use gpui::{AppContext, Application, AsyncApp};
8use gpui::{Entity, Task};
9use language::Bias;
10use language::Buffer;
11use language::Point;
12use language_model::LlmApiToken;
13use project::{Project, ProjectPath, Worktree};
14use release_channel::AppVersion;
15use reqwest_client::ReqwestClient;
16use std::path::{Path, PathBuf};
17use std::process::exit;
18use std::str::FromStr;
19use std::sync::Arc;
20use std::time::Duration;
21use zeta::{GatherContextOutput, PerformPredictEditsParams, Zeta, gather_context};
22
23use crate::headless::ZetaCliAppState;
24
25#[derive(Parser, Debug)]
26#[command(name = "zeta")]
27struct ZetaCliArgs {
28 #[command(subcommand)]
29 command: Commands,
30}
31
32#[derive(Subcommand, Debug)]
33enum Commands {
34 Context(ContextArgs),
35 Predict {
36 #[arg(long)]
37 predict_edits_body: Option<FileOrStdin>,
38 #[clap(flatten)]
39 context_args: Option<ContextArgs>,
40 },
41}
42
43#[derive(Debug, Args)]
44#[group(requires = "worktree")]
45struct ContextArgs {
46 #[arg(long)]
47 worktree: PathBuf,
48 #[arg(long)]
49 cursor: CursorPosition,
50 #[arg(long)]
51 use_language_server: bool,
52 #[arg(long)]
53 events: Option<FileOrStdin>,
54}
55
56#[derive(Debug, Clone)]
57enum FileOrStdin {
58 File(PathBuf),
59 Stdin,
60}
61
62impl FileOrStdin {
63 async fn read_to_string(&self) -> Result<String, std::io::Error> {
64 match self {
65 FileOrStdin::File(path) => smol::fs::read_to_string(path).await,
66 FileOrStdin::Stdin => smol::unblock(|| std::io::read_to_string(std::io::stdin())).await,
67 }
68 }
69}
70
71impl FromStr for FileOrStdin {
72 type Err = <PathBuf as FromStr>::Err;
73
74 fn from_str(s: &str) -> Result<Self, Self::Err> {
75 match s {
76 "-" => Ok(Self::Stdin),
77 _ => Ok(Self::File(PathBuf::from_str(s)?)),
78 }
79 }
80}
81
82#[derive(Debug, Clone)]
83struct CursorPosition {
84 path: PathBuf,
85 point: Point,
86}
87
88impl FromStr for CursorPosition {
89 type Err = anyhow::Error;
90
91 fn from_str(s: &str) -> Result<Self> {
92 let parts: Vec<&str> = s.split(':').collect();
93 if parts.len() != 3 {
94 return Err(anyhow!(
95 "Invalid cursor format. Expected 'file.rs:line:column', got '{}'",
96 s
97 ));
98 }
99
100 let path = PathBuf::from(parts[0]);
101 let line: u32 = parts[1]
102 .parse()
103 .map_err(|_| anyhow!("Invalid line number: '{}'", parts[1]))?;
104 let column: u32 = parts[2]
105 .parse()
106 .map_err(|_| anyhow!("Invalid column number: '{}'", parts[2]))?;
107
108 // Convert from 1-based to 0-based indexing
109 let point = Point::new(line.saturating_sub(1), column.saturating_sub(1));
110
111 Ok(CursorPosition { path, point })
112 }
113}
114
115async fn get_context(
116 args: ContextArgs,
117 app_state: &Arc<ZetaCliAppState>,
118 cx: &mut AsyncApp,
119) -> Result<GatherContextOutput> {
120 let ContextArgs {
121 worktree: worktree_path,
122 cursor,
123 use_language_server,
124 events,
125 } = args;
126
127 let worktree_path = worktree_path.canonicalize()?;
128 if cursor.path.is_absolute() {
129 return Err(anyhow!("Absolute paths are not supported in --cursor"));
130 }
131
132 let project = cx.update(|cx| {
133 Project::local(
134 app_state.client.clone(),
135 app_state.node_runtime.clone(),
136 app_state.user_store.clone(),
137 app_state.languages.clone(),
138 app_state.fs.clone(),
139 None,
140 cx,
141 )
142 })?;
143
144 let worktree = project
145 .update(cx, |project, cx| {
146 project.create_worktree(&worktree_path, true, cx)
147 })?
148 .await?;
149
150 let (_lsp_open_handle, buffer) = if use_language_server {
151 let (lsp_open_handle, buffer) =
152 open_buffer_with_language_server(&project, &worktree, &cursor.path, cx).await?;
153 (Some(lsp_open_handle), buffer)
154 } else {
155 let abs_path = worktree_path.join(&cursor.path);
156 let content = smol::fs::read_to_string(&abs_path).await?;
157 let buffer = cx.new(|cx| Buffer::local(content, cx))?;
158 (None, buffer)
159 };
160
161 let worktree_name = worktree_path
162 .file_name()
163 .ok_or_else(|| anyhow!("--worktree path must end with a folder name"))?;
164 let full_path_str = PathBuf::from(worktree_name)
165 .join(&cursor.path)
166 .to_string_lossy()
167 .to_string();
168
169 let snapshot = cx.update(|cx| buffer.read(cx).snapshot())?;
170 let clipped_cursor = snapshot.clip_point(cursor.point, Bias::Left);
171 if clipped_cursor != cursor.point {
172 let max_row = snapshot.max_point().row;
173 if cursor.point.row < max_row {
174 return Err(anyhow!(
175 "Cursor position {:?} is out of bounds (line length is {})",
176 cursor.point,
177 snapshot.line_len(cursor.point.row)
178 ));
179 } else {
180 return Err(anyhow!(
181 "Cursor position {:?} is out of bounds (max row is {})",
182 cursor.point,
183 max_row
184 ));
185 }
186 }
187
188 let events = match events {
189 Some(events) => events.read_to_string().await?,
190 None => String::new(),
191 };
192 // Enable gathering extra data not currently needed for edit predictions
193 let can_collect_data = true;
194 let git_info = None;
195 let mut gather_context_output = cx
196 .update(|cx| {
197 gather_context(
198 &project,
199 full_path_str,
200 &snapshot,
201 clipped_cursor,
202 move || events,
203 can_collect_data,
204 git_info,
205 cx,
206 )
207 })?
208 .await;
209
210 // Disable data collection for these requests, as this is currently just used for evals
211 if let Ok(gather_context_output) = gather_context_output.as_mut() {
212 gather_context_output.body.can_collect_data = false
213 }
214
215 gather_context_output
216}
217
218pub async fn open_buffer_with_language_server(
219 project: &Entity<Project>,
220 worktree: &Entity<Worktree>,
221 path: &Path,
222 cx: &mut AsyncApp,
223) -> Result<(Entity<Entity<Buffer>>, Entity<Buffer>)> {
224 let project_path = worktree.read_with(cx, |worktree, _cx| ProjectPath {
225 worktree_id: worktree.id(),
226 path: path.to_path_buf().into(),
227 })?;
228
229 let buffer = project
230 .update(cx, |project, cx| project.open_buffer(project_path, cx))?
231 .await?;
232
233 let lsp_open_handle = project.update(cx, |project, cx| {
234 project.register_buffer_with_language_servers(&buffer, cx)
235 })?;
236
237 let log_prefix = path.to_string_lossy().to_string();
238 wait_for_lang_server(&project, &buffer, log_prefix, cx).await?;
239
240 Ok((lsp_open_handle, buffer))
241}
242
243// TODO: Dedupe with similar function in crates/eval/src/instance.rs
244pub fn wait_for_lang_server(
245 project: &Entity<Project>,
246 buffer: &Entity<Buffer>,
247 log_prefix: String,
248 cx: &mut AsyncApp,
249) -> Task<Result<()>> {
250 println!("{}⏵ Waiting for language server", log_prefix);
251
252 let (mut tx, mut rx) = mpsc::channel(1);
253
254 let lsp_store = project
255 .read_with(cx, |project, _| project.lsp_store())
256 .unwrap();
257
258 let has_lang_server = buffer
259 .update(cx, |buffer, cx| {
260 lsp_store.update(cx, |lsp_store, cx| {
261 lsp_store
262 .language_servers_for_local_buffer(buffer, cx)
263 .next()
264 .is_some()
265 })
266 })
267 .unwrap_or(false);
268
269 if has_lang_server {
270 project
271 .update(cx, |project, cx| project.save_buffer(buffer.clone(), cx))
272 .unwrap()
273 .detach();
274 }
275
276 let subscriptions = [
277 cx.subscribe(&lsp_store, {
278 let log_prefix = log_prefix.clone();
279 move |_, event, _| {
280 if let project::LspStoreEvent::LanguageServerUpdate {
281 message:
282 client::proto::update_language_server::Variant::WorkProgress(
283 client::proto::LspWorkProgress {
284 message: Some(message),
285 ..
286 },
287 ),
288 ..
289 } = event
290 {
291 println!("{}⟲ {message}", log_prefix)
292 }
293 }
294 }),
295 cx.subscribe(project, {
296 let buffer = buffer.clone();
297 move |project, event, cx| match event {
298 project::Event::LanguageServerAdded(_, _, _) => {
299 let buffer = buffer.clone();
300 project
301 .update(cx, |project, cx| project.save_buffer(buffer, cx))
302 .detach();
303 }
304 project::Event::DiskBasedDiagnosticsFinished { .. } => {
305 tx.try_send(()).ok();
306 }
307 _ => {}
308 }
309 }),
310 ];
311
312 cx.spawn(async move |cx| {
313 let timeout = cx.background_executor().timer(Duration::new(60 * 5, 0));
314 let result = futures::select! {
315 _ = rx.next() => {
316 println!("{}⚑ Language server idle", log_prefix);
317 anyhow::Ok(())
318 },
319 _ = timeout.fuse() => {
320 anyhow::bail!("LSP wait timed out after 5 minutes");
321 }
322 };
323 drop(subscriptions);
324 result
325 })
326}
327
328fn main() {
329 let args = ZetaCliArgs::parse();
330 let http_client = Arc::new(ReqwestClient::new());
331 let app = Application::headless().with_http_client(http_client);
332
333 app.run(move |cx| {
334 let app_state = Arc::new(headless::init(cx));
335 cx.spawn(async move |cx| {
336 let result = match args.command {
337 Commands::Context(context_args) => get_context(context_args, &app_state, cx)
338 .await
339 .map(|output| serde_json::to_string_pretty(&output.body).unwrap()),
340 Commands::Predict {
341 predict_edits_body,
342 context_args,
343 } => {
344 cx.spawn(async move |cx| {
345 let app_version = cx.update(|cx| AppVersion::global(cx))?;
346 app_state.client.sign_in(true, cx).await?;
347 let llm_token = LlmApiToken::default();
348 llm_token.refresh(&app_state.client).await?;
349
350 let predict_edits_body =
351 if let Some(predict_edits_body) = predict_edits_body {
352 serde_json::from_str(&predict_edits_body.read_to_string().await?)?
353 } else if let Some(context_args) = context_args {
354 get_context(context_args, &app_state, cx).await?.body
355 } else {
356 return Err(anyhow!(
357 "Expected either --predict-edits-body-file \
358 or the required args of the `context` command."
359 ));
360 };
361
362 let (response, _usage) =
363 Zeta::perform_predict_edits(PerformPredictEditsParams {
364 client: app_state.client.clone(),
365 llm_token,
366 app_version,
367 body: predict_edits_body,
368 })
369 .await?;
370
371 Ok(response.output_excerpt)
372 })
373 .await
374 }
375 };
376 match result {
377 Ok(output) => {
378 println!("{}", output);
379 let _ = cx.update(|cx| cx.quit());
380 }
381 Err(e) => {
382 eprintln!("Failed: {:?}", e);
383 exit(1);
384 }
385 }
386 })
387 .detach();
388 });
389}