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 let prompt_for_events = move || (events, 0);
193 cx.update(|cx| {
194 gather_context(
195 full_path_str,
196 &snapshot,
197 clipped_cursor,
198 prompt_for_events,
199 cx,
200 )
201 })?
202 .await
203}
204
205pub async fn open_buffer_with_language_server(
206 project: &Entity<Project>,
207 worktree: &Entity<Worktree>,
208 path: &Path,
209 cx: &mut AsyncApp,
210) -> Result<(Entity<Entity<Buffer>>, Entity<Buffer>)> {
211 let project_path = worktree.read_with(cx, |worktree, _cx| ProjectPath {
212 worktree_id: worktree.id(),
213 path: path.to_path_buf().into(),
214 })?;
215
216 let buffer = project
217 .update(cx, |project, cx| project.open_buffer(project_path, cx))?
218 .await?;
219
220 let lsp_open_handle = project.update(cx, |project, cx| {
221 project.register_buffer_with_language_servers(&buffer, cx)
222 })?;
223
224 let log_prefix = path.to_string_lossy().to_string();
225 wait_for_lang_server(&project, &buffer, log_prefix, cx).await?;
226
227 Ok((lsp_open_handle, buffer))
228}
229
230// TODO: Dedupe with similar function in crates/eval/src/instance.rs
231pub fn wait_for_lang_server(
232 project: &Entity<Project>,
233 buffer: &Entity<Buffer>,
234 log_prefix: String,
235 cx: &mut AsyncApp,
236) -> Task<Result<()>> {
237 println!("{}⏵ Waiting for language server", log_prefix);
238
239 let (mut tx, mut rx) = mpsc::channel(1);
240
241 let lsp_store = project
242 .read_with(cx, |project, _| project.lsp_store())
243 .unwrap();
244
245 let has_lang_server = buffer
246 .update(cx, |buffer, cx| {
247 lsp_store.update(cx, |lsp_store, cx| {
248 lsp_store
249 .language_servers_for_local_buffer(buffer, cx)
250 .next()
251 .is_some()
252 })
253 })
254 .unwrap_or(false);
255
256 if has_lang_server {
257 project
258 .update(cx, |project, cx| project.save_buffer(buffer.clone(), cx))
259 .unwrap()
260 .detach();
261 }
262
263 let subscriptions = [
264 cx.subscribe(&lsp_store, {
265 let log_prefix = log_prefix.clone();
266 move |_, event, _| {
267 if let project::LspStoreEvent::LanguageServerUpdate {
268 message:
269 client::proto::update_language_server::Variant::WorkProgress(
270 client::proto::LspWorkProgress {
271 message: Some(message),
272 ..
273 },
274 ),
275 ..
276 } = event
277 {
278 println!("{}⟲ {message}", log_prefix)
279 }
280 }
281 }),
282 cx.subscribe(project, {
283 let buffer = buffer.clone();
284 move |project, event, cx| match event {
285 project::Event::LanguageServerAdded(_, _, _) => {
286 let buffer = buffer.clone();
287 project
288 .update(cx, |project, cx| project.save_buffer(buffer, cx))
289 .detach();
290 }
291 project::Event::DiskBasedDiagnosticsFinished { .. } => {
292 tx.try_send(()).ok();
293 }
294 _ => {}
295 }
296 }),
297 ];
298
299 cx.spawn(async move |cx| {
300 let timeout = cx.background_executor().timer(Duration::new(60 * 5, 0));
301 let result = futures::select! {
302 _ = rx.next() => {
303 println!("{}⚑ Language server idle", log_prefix);
304 anyhow::Ok(())
305 },
306 _ = timeout.fuse() => {
307 anyhow::bail!("LSP wait timed out after 5 minutes");
308 }
309 };
310 drop(subscriptions);
311 result
312 })
313}
314
315fn main() {
316 let args = ZetaCliArgs::parse();
317 let http_client = Arc::new(ReqwestClient::new());
318 let app = Application::headless().with_http_client(http_client);
319
320 app.run(move |cx| {
321 let app_state = Arc::new(headless::init(cx));
322 cx.spawn(async move |cx| {
323 let result = match args.command {
324 Commands::Context(context_args) => get_context(context_args, &app_state, cx)
325 .await
326 .map(|output| serde_json::to_string_pretty(&output.body).unwrap()),
327 Commands::Predict {
328 predict_edits_body,
329 context_args,
330 } => {
331 cx.spawn(async move |cx| {
332 let app_version = cx.update(|cx| AppVersion::global(cx))?;
333 app_state.client.sign_in(true, cx).await?;
334 let llm_token = LlmApiToken::default();
335 llm_token.refresh(&app_state.client).await?;
336
337 let predict_edits_body =
338 if let Some(predict_edits_body) = predict_edits_body {
339 serde_json::from_str(&predict_edits_body.read_to_string().await?)?
340 } else if let Some(context_args) = context_args {
341 get_context(context_args, &app_state, cx).await?.body
342 } else {
343 return Err(anyhow!(
344 "Expected either --predict-edits-body-file \
345 or the required args of the `context` command."
346 ));
347 };
348
349 let (response, _usage) =
350 Zeta::perform_predict_edits(PerformPredictEditsParams {
351 client: app_state.client.clone(),
352 llm_token,
353 app_version,
354 body: predict_edits_body,
355 })
356 .await?;
357
358 Ok(response.output_excerpt)
359 })
360 .await
361 }
362 };
363 match result {
364 Ok(output) => {
365 println!("{}", output);
366 let _ = cx.update(|cx| cx.quit());
367 }
368 Err(e) => {
369 eprintln!("Failed: {:?}", e);
370 exit(1);
371 }
372 }
373 })
374 .detach();
375 });
376}