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};
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, _lsp_open_handle, buffer) = if use_language_server {
133 let (project, lsp_open_handle, buffer) =
134 open_buffer_with_language_server(&worktree_path, &cursor.path, &app_state, cx).await?;
135 (Some(project), Some(lsp_open_handle), buffer)
136 } else {
137 let abs_path = worktree_path.join(&cursor.path);
138 let content = smol::fs::read_to_string(&abs_path).await?;
139 let buffer = cx.new(|cx| Buffer::local(content, cx))?;
140 (None, None, buffer)
141 };
142
143 let worktree_name = worktree_path
144 .file_name()
145 .ok_or_else(|| anyhow!("--worktree path must end with a folder name"))?;
146 let full_path_str = PathBuf::from(worktree_name)
147 .join(&cursor.path)
148 .to_string_lossy()
149 .to_string();
150
151 let snapshot = cx.update(|cx| buffer.read(cx).snapshot())?;
152 let clipped_cursor = snapshot.clip_point(cursor.point, Bias::Left);
153 if clipped_cursor != cursor.point {
154 let max_row = snapshot.max_point().row;
155 if cursor.point.row < max_row {
156 return Err(anyhow!(
157 "Cursor position {:?} is out of bounds (line length is {})",
158 cursor.point,
159 snapshot.line_len(cursor.point.row)
160 ));
161 } else {
162 return Err(anyhow!(
163 "Cursor position {:?} is out of bounds (max row is {})",
164 cursor.point,
165 max_row
166 ));
167 }
168 }
169
170 let events = match events {
171 Some(events) => events.read_to_string().await?,
172 None => String::new(),
173 };
174 // Enable gathering extra data not currently needed for edit predictions
175 let can_collect_data = true;
176 let git_info = None;
177 let mut gather_context_output = cx
178 .update(|cx| {
179 gather_context(
180 project.as_ref(),
181 full_path_str,
182 &snapshot,
183 clipped_cursor,
184 move || events,
185 can_collect_data,
186 git_info,
187 cx,
188 )
189 })?
190 .await;
191
192 // Disable data collection for these requests, as this is currently just used for evals
193 match gather_context_output.as_mut() {
194 Ok(gather_context_output) => gather_context_output.body.can_collect_data = false,
195 Err(_) => {}
196 }
197
198 gather_context_output
199}
200
201pub async fn open_buffer_with_language_server(
202 worktree_path: &Path,
203 path: &Path,
204 app_state: &Arc<ZetaCliAppState>,
205 cx: &mut AsyncApp,
206) -> Result<(Entity<Project>, Entity<Entity<Buffer>>, Entity<Buffer>)> {
207 let project = cx.update(|cx| {
208 Project::local(
209 app_state.client.clone(),
210 app_state.node_runtime.clone(),
211 app_state.user_store.clone(),
212 app_state.languages.clone(),
213 app_state.fs.clone(),
214 None,
215 cx,
216 )
217 })?;
218
219 let worktree = project
220 .update(cx, |project, cx| {
221 project.create_worktree(worktree_path, true, cx)
222 })?
223 .await?;
224
225 let project_path = worktree.read_with(cx, |worktree, _cx| ProjectPath {
226 worktree_id: worktree.id(),
227 path: path.to_path_buf().into(),
228 })?;
229
230 let buffer = project
231 .update(cx, |project, cx| project.open_buffer(project_path, cx))?
232 .await?;
233
234 let lsp_open_handle = project.update(cx, |project, cx| {
235 project.register_buffer_with_language_servers(&buffer, cx)
236 })?;
237
238 let log_prefix = path.to_string_lossy().to_string();
239 wait_for_lang_server(&project, &buffer, log_prefix, cx).await?;
240
241 Ok((project, lsp_open_handle, buffer))
242}
243
244// TODO: Dedupe with similar function in crates/eval/src/instance.rs
245pub fn wait_for_lang_server(
246 project: &Entity<Project>,
247 buffer: &Entity<Buffer>,
248 log_prefix: String,
249 cx: &mut AsyncApp,
250) -> Task<Result<()>> {
251 println!("{}⏵ Waiting for language server", log_prefix);
252
253 let (mut tx, mut rx) = mpsc::channel(1);
254
255 let lsp_store = project
256 .read_with(cx, |project, _| project.lsp_store())
257 .unwrap();
258
259 let has_lang_server = buffer
260 .update(cx, |buffer, cx| {
261 lsp_store.update(cx, |lsp_store, cx| {
262 lsp_store
263 .language_servers_for_local_buffer(&buffer, cx)
264 .next()
265 .is_some()
266 })
267 })
268 .unwrap_or(false);
269
270 if has_lang_server {
271 project
272 .update(cx, |project, cx| project.save_buffer(buffer.clone(), cx))
273 .unwrap()
274 .detach();
275 }
276
277 let subscriptions = [
278 cx.subscribe(&lsp_store, {
279 let log_prefix = log_prefix.clone();
280 move |_, event, _| match event {
281 project::LspStoreEvent::LanguageServerUpdate {
282 message:
283 client::proto::update_language_server::Variant::WorkProgress(
284 client::proto::LspWorkProgress {
285 message: Some(message),
286 ..
287 },
288 ),
289 ..
290 } => println!("{}⟲ {message}", log_prefix),
291 _ => {}
292 }
293 }),
294 cx.subscribe(&project, {
295 let buffer = buffer.clone();
296 move |project, event, cx| match event {
297 project::Event::LanguageServerAdded(_, _, _) => {
298 let buffer = buffer.clone();
299 project
300 .update(cx, |project, cx| project.save_buffer(buffer, cx))
301 .detach();
302 }
303 project::Event::DiskBasedDiagnosticsFinished { .. } => {
304 tx.try_send(()).ok();
305 }
306 _ => {}
307 }
308 }),
309 ];
310
311 cx.spawn(async move |cx| {
312 let timeout = cx.background_executor().timer(Duration::new(60 * 5, 0));
313 let result = futures::select! {
314 _ = rx.next() => {
315 println!("{}⚑ Language server idle", log_prefix);
316 anyhow::Ok(())
317 },
318 _ = timeout.fuse() => {
319 anyhow::bail!("LSP wait timed out after 5 minutes");
320 }
321 };
322 drop(subscriptions);
323 result
324 })
325}
326
327fn main() {
328 let args = ZetaCliArgs::parse();
329 let http_client = Arc::new(ReqwestClient::new());
330 let app = Application::headless().with_http_client(http_client);
331
332 app.run(move |cx| {
333 let app_state = Arc::new(headless::init(cx));
334 cx.spawn(async move |cx| {
335 let result = match args.command {
336 Commands::Context(context_args) => get_context(context_args, &app_state, cx)
337 .await
338 .map(|output| serde_json::to_string_pretty(&output.body).unwrap()),
339 Commands::Predict {
340 predict_edits_body,
341 context_args,
342 } => {
343 cx.spawn(async move |cx| {
344 let app_version = cx.update(|cx| AppVersion::global(cx))?;
345 app_state.client.sign_in(true, cx).await?;
346 let llm_token = LlmApiToken::default();
347 llm_token.refresh(&app_state.client).await?;
348
349 let predict_edits_body =
350 if let Some(predict_edits_body) = predict_edits_body {
351 serde_json::from_str(&predict_edits_body.read_to_string().await?)?
352 } else if let Some(context_args) = context_args {
353 get_context(context_args, &app_state, cx).await?.body
354 } else {
355 return Err(anyhow!(
356 "Expected either --predict-edits-body-file \
357 or the required args of the `context` command."
358 ));
359 };
360
361 let (response, _usage) =
362 Zeta::perform_predict_edits(PerformPredictEditsParams {
363 client: app_state.client.clone(),
364 llm_token,
365 app_version,
366 body: predict_edits_body,
367 })
368 .await?;
369
370 Ok(response.output_excerpt)
371 })
372 .await
373 }
374 };
375 match result {
376 Ok(output) => {
377 println!("{}", output);
378 let _ = cx.update(|cx| cx.quit());
379 }
380 Err(e) => {
381 eprintln!("Failed: {:?}", e);
382 exit(1);
383 }
384 }
385 })
386 .detach();
387 });
388}