1mod copilot_edit_prediction_delegate;
   2pub mod request;
   3
   4use crate::request::{
   5    DidFocus, DidFocusParams, FormattingOptions, InlineCompletionContext,
   6    InlineCompletionTriggerKind, InlineCompletions, NextEditSuggestions,
   7};
   8use ::fs::Fs;
   9use anyhow::{Context as _, Result, anyhow};
  10use collections::{HashMap, HashSet};
  11use command_palette_hooks::CommandPaletteFilter;
  12use futures::future;
  13use futures::{Future, FutureExt, TryFutureExt, channel::oneshot, future::Shared, select_biased};
  14use gpui::{
  15    App, AppContext as _, AsyncApp, Context, Entity, EntityId, EventEmitter, Global, Subscription,
  16    Task, WeakEntity, actions,
  17};
  18use language::language_settings::{AllLanguageSettings, CopilotSettings};
  19use language::{
  20    Anchor, Bias, Buffer, BufferSnapshot, Language, PointUtf16, ToPointUtf16,
  21    language_settings::{EditPredictionProvider, all_language_settings},
  22    point_from_lsp, point_to_lsp,
  23};
  24use lsp::{LanguageServer, LanguageServerBinary, LanguageServerId, LanguageServerName};
  25use node_runtime::{NodeRuntime, VersionStrategy};
  26use parking_lot::Mutex;
  27use project::project_settings::ProjectSettings;
  28use project::{DisableAiSettings, Project};
  29use request::DidChangeStatus;
  30use semver::Version;
  31use serde_json::json;
  32use settings::{Settings, SettingsStore};
  33use std::{
  34    any::TypeId,
  35    collections::hash_map::Entry,
  36    env,
  37    ffi::OsString,
  38    mem,
  39    ops::Range,
  40    path::{Path, PathBuf},
  41    sync::Arc,
  42};
  43use sum_tree::Dimensions;
  44use util::{ResultExt, fs::remove_matching};
  45use workspace::AppState;
  46
  47pub use crate::copilot_edit_prediction_delegate::CopilotEditPredictionDelegate;
  48
  49actions!(
  50    copilot,
  51    [
  52        /// Requests a code completion suggestion from Copilot.
  53        Suggest,
  54        /// Cycles to the next Copilot suggestion.
  55        NextSuggestion,
  56        /// Cycles to the previous Copilot suggestion.
  57        PreviousSuggestion,
  58        /// Reinstalls the Copilot language server.
  59        Reinstall,
  60        /// Signs in to GitHub Copilot.
  61        SignIn,
  62        /// Signs out of GitHub Copilot.
  63        SignOut
  64    ]
  65);
  66
  67enum CopilotServer {
  68    Disabled,
  69    Starting { task: Shared<Task<()>> },
  70    Error(Arc<str>),
  71    Running(RunningCopilotServer),
  72}
  73
  74impl CopilotServer {
  75    fn as_authenticated(&mut self) -> Result<&mut RunningCopilotServer> {
  76        let server = self.as_running()?;
  77        anyhow::ensure!(
  78            matches!(server.sign_in_status, SignInStatus::Authorized),
  79            "must sign in before using copilot"
  80        );
  81        Ok(server)
  82    }
  83
  84    fn as_running(&mut self) -> Result<&mut RunningCopilotServer> {
  85        match self {
  86            CopilotServer::Starting { .. } => anyhow::bail!("copilot is still starting"),
  87            CopilotServer::Disabled => anyhow::bail!("copilot is disabled"),
  88            CopilotServer::Error(error) => {
  89                anyhow::bail!("copilot was not started because of an error: {error}")
  90            }
  91            CopilotServer::Running(server) => Ok(server),
  92        }
  93    }
  94}
  95
  96struct RunningCopilotServer {
  97    lsp: Arc<LanguageServer>,
  98    sign_in_status: SignInStatus,
  99    registered_buffers: HashMap<EntityId, RegisteredBuffer>,
 100}
 101
 102#[derive(Clone, Debug)]
 103enum SignInStatus {
 104    Authorized,
 105    Unauthorized,
 106    SigningIn {
 107        prompt: Option<request::PromptUserDeviceFlow>,
 108        task: Shared<Task<Result<(), Arc<anyhow::Error>>>>,
 109    },
 110    SignedOut {
 111        awaiting_signing_in: bool,
 112    },
 113}
 114
 115#[derive(Debug, Clone)]
 116pub enum Status {
 117    Starting {
 118        task: Shared<Task<()>>,
 119    },
 120    Error(Arc<str>),
 121    Disabled,
 122    SignedOut {
 123        awaiting_signing_in: bool,
 124    },
 125    SigningIn {
 126        prompt: Option<request::PromptUserDeviceFlow>,
 127    },
 128    Unauthorized,
 129    Authorized,
 130}
 131
 132impl Status {
 133    pub fn is_authorized(&self) -> bool {
 134        matches!(self, Status::Authorized)
 135    }
 136
 137    pub fn is_configured(&self) -> bool {
 138        matches!(
 139            self,
 140            Status::Starting { .. }
 141                | Status::Error(_)
 142                | Status::SigningIn { .. }
 143                | Status::Authorized
 144        )
 145    }
 146}
 147
 148struct RegisteredBuffer {
 149    uri: lsp::Uri,
 150    language_id: String,
 151    snapshot: BufferSnapshot,
 152    snapshot_version: i32,
 153    _subscriptions: [gpui::Subscription; 2],
 154    pending_buffer_change: Task<Option<()>>,
 155}
 156
 157impl RegisteredBuffer {
 158    fn report_changes(
 159        &mut self,
 160        buffer: &Entity<Buffer>,
 161        cx: &mut Context<Copilot>,
 162    ) -> oneshot::Receiver<(i32, BufferSnapshot)> {
 163        let (done_tx, done_rx) = oneshot::channel();
 164
 165        if buffer.read(cx).version() == self.snapshot.version {
 166            let _ = done_tx.send((self.snapshot_version, self.snapshot.clone()));
 167        } else {
 168            let buffer = buffer.downgrade();
 169            let id = buffer.entity_id();
 170            let prev_pending_change =
 171                mem::replace(&mut self.pending_buffer_change, Task::ready(None));
 172            self.pending_buffer_change = cx.spawn(async move |copilot, cx| {
 173                prev_pending_change.await;
 174
 175                let old_version = copilot
 176                    .update(cx, |copilot, _| {
 177                        let server = copilot.server.as_authenticated().log_err()?;
 178                        let buffer = server.registered_buffers.get_mut(&id)?;
 179                        Some(buffer.snapshot.version.clone())
 180                    })
 181                    .ok()??;
 182                let new_snapshot = buffer.read_with(cx, |buffer, _| buffer.snapshot()).ok()?;
 183
 184                let content_changes = cx
 185                    .background_spawn({
 186                        let new_snapshot = new_snapshot.clone();
 187                        async move {
 188                            new_snapshot
 189                                .edits_since::<Dimensions<PointUtf16, usize>>(&old_version)
 190                                .map(|edit| {
 191                                    let edit_start = edit.new.start.0;
 192                                    let edit_end = edit_start + (edit.old.end.0 - edit.old.start.0);
 193                                    let new_text = new_snapshot
 194                                        .text_for_range(edit.new.start.1..edit.new.end.1)
 195                                        .collect();
 196                                    lsp::TextDocumentContentChangeEvent {
 197                                        range: Some(lsp::Range::new(
 198                                            point_to_lsp(edit_start),
 199                                            point_to_lsp(edit_end),
 200                                        )),
 201                                        range_length: None,
 202                                        text: new_text,
 203                                    }
 204                                })
 205                                .collect::<Vec<_>>()
 206                        }
 207                    })
 208                    .await;
 209
 210                copilot
 211                    .update(cx, |copilot, _| {
 212                        let server = copilot.server.as_authenticated().log_err()?;
 213                        let buffer = server.registered_buffers.get_mut(&id)?;
 214                        if !content_changes.is_empty() {
 215                            buffer.snapshot_version += 1;
 216                            buffer.snapshot = new_snapshot;
 217                            server
 218                                .lsp
 219                                .notify::<lsp::notification::DidChangeTextDocument>(
 220                                    lsp::DidChangeTextDocumentParams {
 221                                        text_document: lsp::VersionedTextDocumentIdentifier::new(
 222                                            buffer.uri.clone(),
 223                                            buffer.snapshot_version,
 224                                        ),
 225                                        content_changes,
 226                                    },
 227                                )
 228                                .ok();
 229                        }
 230                        let _ = done_tx.send((buffer.snapshot_version, buffer.snapshot.clone()));
 231                        Some(())
 232                    })
 233                    .ok()?;
 234
 235                Some(())
 236            });
 237        }
 238
 239        done_rx
 240    }
 241}
 242
 243#[derive(Debug)]
 244pub struct Completion {
 245    pub uuid: String,
 246    pub range: Range<Anchor>,
 247    pub text: String,
 248}
 249
 250pub struct Copilot {
 251    fs: Arc<dyn Fs>,
 252    node_runtime: NodeRuntime,
 253    server: CopilotServer,
 254    buffers: HashSet<WeakEntity<Buffer>>,
 255    server_id: LanguageServerId,
 256    _subscriptions: Vec<Subscription>,
 257}
 258
 259pub enum Event {
 260    CopilotAuthSignedIn,
 261    CopilotAuthSignedOut,
 262}
 263
 264impl EventEmitter<Event> for Copilot {}
 265
 266#[derive(Clone)]
 267pub struct GlobalCopilotAuth(pub Entity<Copilot>);
 268
 269impl GlobalCopilotAuth {
 270    pub fn set_global(
 271        server_id: LanguageServerId,
 272        fs: Arc<dyn Fs>,
 273        node_runtime: NodeRuntime,
 274        cx: &mut App,
 275    ) -> GlobalCopilotAuth {
 276        let auth =
 277            GlobalCopilotAuth(cx.new(|cx| Copilot::new(None, server_id, fs, node_runtime, cx)));
 278        cx.set_global(auth.clone());
 279        auth
 280    }
 281    pub fn try_global(cx: &mut App) -> Option<&GlobalCopilotAuth> {
 282        cx.try_global()
 283    }
 284
 285    pub fn try_get_or_init(app_state: Arc<AppState>, cx: &mut App) -> Option<GlobalCopilotAuth> {
 286        let ai_enabled = !DisableAiSettings::get(None, cx).disable_ai;
 287
 288        if let Some(copilot) = cx.try_global::<Self>().cloned() {
 289            if ai_enabled {
 290                Some(copilot)
 291            } else {
 292                cx.remove_global::<Self>();
 293                None
 294            }
 295        } else if ai_enabled {
 296            Some(Self::set_global(
 297                app_state.languages.next_language_server_id(),
 298                app_state.fs.clone(),
 299                app_state.node_runtime.clone(),
 300                cx,
 301            ))
 302        } else {
 303            None
 304        }
 305    }
 306}
 307impl Global for GlobalCopilotAuth {}
 308
 309#[derive(Clone, Copy, Debug, PartialEq, Eq)]
 310pub(crate) enum CompletionSource {
 311    NextEditSuggestion,
 312    InlineCompletion,
 313}
 314
 315/// Copilot's NextEditSuggestion response, with coordinates converted to Anchors.
 316#[derive(Clone)]
 317pub(crate) struct CopilotEditPrediction {
 318    pub(crate) buffer: Entity<Buffer>,
 319    pub(crate) range: Range<Anchor>,
 320    pub(crate) text: String,
 321    pub(crate) command: Option<lsp::Command>,
 322    pub(crate) snapshot: BufferSnapshot,
 323    pub(crate) source: CompletionSource,
 324}
 325
 326impl Copilot {
 327    pub fn new(
 328        project: Option<Entity<Project>>,
 329        new_server_id: LanguageServerId,
 330        fs: Arc<dyn Fs>,
 331        node_runtime: NodeRuntime,
 332        cx: &mut Context<Self>,
 333    ) -> Self {
 334        let send_focus_notification = project.map(|project| {
 335            cx.subscribe(&project, |this, project, e: &project::Event, cx| {
 336                if let project::Event::ActiveEntryChanged(new_entry) = e
 337                    && let Ok(running) = this.server.as_authenticated()
 338                {
 339                    let uri = new_entry
 340                        .and_then(|id| project.read(cx).path_for_entry(id, cx))
 341                        .and_then(|entry| project.read(cx).absolute_path(&entry, cx))
 342                        .and_then(|abs_path| lsp::Uri::from_file_path(abs_path).ok());
 343
 344                    _ = running.lsp.notify::<DidFocus>(DidFocusParams { uri });
 345                }
 346            })
 347        });
 348        let global_authentication_events =
 349            cx.try_global::<GlobalCopilotAuth>().cloned().map(|auth| {
 350                cx.subscribe(&auth.0, |_, _, _: &Event, cx| {
 351                    let request_timeout = ProjectSettings::get_global(cx)
 352                        .global_lsp_settings
 353                        .get_request_timeout();
 354                    cx.spawn(async move |this, cx| {
 355                        let Some(server) = this
 356                            .update(cx, |this, _| this.language_server().cloned())
 357                            .ok()
 358                            .flatten()
 359                        else {
 360                            return;
 361                        };
 362                        let status = server
 363                            .request::<request::CheckStatus>(
 364                                request::CheckStatusParams {
 365                                    local_checks_only: false,
 366                                },
 367                                request_timeout,
 368                            )
 369                            .await
 370                            .into_response()
 371                            .ok();
 372                        if let Some(status) = status {
 373                            this.update(cx, |copilot, cx| {
 374                                copilot.update_sign_in_status(status, cx);
 375                            })
 376                            .ok();
 377                        }
 378                    })
 379                    .detach()
 380                })
 381            });
 382        let _subscriptions = std::iter::once(cx.on_app_quit(Self::shutdown_language_server))
 383            .chain(send_focus_notification)
 384            .chain(global_authentication_events)
 385            .collect();
 386        let mut this = Self {
 387            server_id: new_server_id,
 388            fs,
 389            node_runtime,
 390            server: CopilotServer::Disabled,
 391            buffers: Default::default(),
 392            _subscriptions,
 393        };
 394        this.start_copilot(true, false, cx);
 395        cx.observe_global::<SettingsStore>(move |this, cx| {
 396            let ai_disabled = DisableAiSettings::get_global(cx).disable_ai;
 397
 398            if ai_disabled {
 399                // Stop the server if AI is disabled
 400                if !matches!(this.server, CopilotServer::Disabled) {
 401                    let shutdown = match mem::replace(&mut this.server, CopilotServer::Disabled) {
 402                        CopilotServer::Running(server) => {
 403                            let shutdown_future = server.lsp.shutdown();
 404                            Some(cx.background_spawn(async move {
 405                                if let Some(fut) = shutdown_future {
 406                                    fut.await;
 407                                }
 408                            }))
 409                        }
 410                        _ => None,
 411                    };
 412                    if let Some(task) = shutdown {
 413                        task.detach();
 414                    }
 415                    cx.notify();
 416                }
 417            } else {
 418                // Only start if AI is enabled
 419                this.start_copilot(true, false, cx);
 420                if let Ok(server) = this.server.as_running() {
 421                    notify_did_change_config_to_server(&server.lsp, cx)
 422                        .context("copilot setting change: did change configuration")
 423                        .log_err();
 424                }
 425            }
 426            this.update_action_visibilities(cx);
 427        })
 428        .detach();
 429        cx.observe_self(|copilot, cx| {
 430            copilot.update_action_visibilities(cx);
 431        })
 432        .detach();
 433        this
 434    }
 435
 436    fn shutdown_language_server(
 437        &mut self,
 438        _cx: &mut Context<Self>,
 439    ) -> impl Future<Output = ()> + use<> {
 440        let shutdown = match mem::replace(&mut self.server, CopilotServer::Disabled) {
 441            CopilotServer::Running(server) => Some(Box::pin(async move { server.lsp.shutdown() })),
 442            _ => None,
 443        };
 444
 445        async move {
 446            if let Some(shutdown) = shutdown {
 447                shutdown.await;
 448            }
 449        }
 450    }
 451
 452    pub fn start_copilot(
 453        &mut self,
 454        check_edit_prediction_provider: bool,
 455        awaiting_sign_in_after_start: bool,
 456        cx: &mut Context<Self>,
 457    ) {
 458        if DisableAiSettings::get_global(cx).disable_ai {
 459            return;
 460        }
 461        if !matches!(self.server, CopilotServer::Disabled) {
 462            return;
 463        }
 464        let language_settings = all_language_settings(None, cx);
 465        if check_edit_prediction_provider
 466            && language_settings.edit_predictions.provider != EditPredictionProvider::Copilot
 467        {
 468            return;
 469        }
 470        let server_id = self.server_id;
 471        let fs = self.fs.clone();
 472        let node_runtime = self.node_runtime.clone();
 473        let env = self.build_env(&language_settings.edit_predictions.copilot);
 474        let start_task = cx
 475            .spawn(async move |this, cx| {
 476                Self::start_language_server(
 477                    server_id,
 478                    fs,
 479                    node_runtime,
 480                    env,
 481                    this,
 482                    awaiting_sign_in_after_start,
 483                    cx,
 484                )
 485                .await
 486            })
 487            .shared();
 488        self.server = CopilotServer::Starting { task: start_task };
 489        cx.notify();
 490    }
 491
 492    fn build_env(&self, copilot_settings: &CopilotSettings) -> Option<HashMap<String, String>> {
 493        let proxy_url = copilot_settings.proxy.clone()?;
 494        let no_verify = copilot_settings.proxy_no_verify;
 495        let http_or_https_proxy = if proxy_url.starts_with("http:") {
 496            Some("HTTP_PROXY")
 497        } else if proxy_url.starts_with("https:") {
 498            Some("HTTPS_PROXY")
 499        } else {
 500            log::error!(
 501                "Unsupported protocol scheme for language server proxy (must be http or https)"
 502            );
 503            None
 504        };
 505
 506        let mut env = HashMap::default();
 507
 508        if let Some(proxy_type) = http_or_https_proxy {
 509            env.insert(proxy_type.to_string(), proxy_url);
 510            if let Some(true) = no_verify {
 511                env.insert("NODE_TLS_REJECT_UNAUTHORIZED".to_string(), "0".to_string());
 512            };
 513        }
 514
 515        if let Ok(oauth_token) = env::var(copilot_chat::COPILOT_OAUTH_ENV_VAR) {
 516            env.insert(copilot_chat::COPILOT_OAUTH_ENV_VAR.to_string(), oauth_token);
 517        }
 518
 519        if env.is_empty() { None } else { Some(env) }
 520    }
 521
 522    #[cfg(any(test, feature = "test-support"))]
 523    pub fn fake(cx: &mut gpui::TestAppContext) -> (Entity<Self>, lsp::FakeLanguageServer) {
 524        use fs::FakeFs;
 525        use gpui::Subscription;
 526        use lsp::FakeLanguageServer;
 527        use node_runtime::NodeRuntime;
 528
 529        let (server, fake_server) = FakeLanguageServer::new(
 530            LanguageServerId(0),
 531            LanguageServerBinary {
 532                path: "path/to/copilot".into(),
 533                arguments: vec![],
 534                env: None,
 535            },
 536            "copilot".into(),
 537            Default::default(),
 538            &mut cx.to_async(),
 539        );
 540        let node_runtime = NodeRuntime::unavailable();
 541        let send_focus_notification = Subscription::new(|| {});
 542        let this = cx.new(|cx| Self {
 543            server_id: LanguageServerId(0),
 544            fs: FakeFs::new(cx.background_executor().clone()),
 545            node_runtime,
 546            server: CopilotServer::Running(RunningCopilotServer {
 547                lsp: Arc::new(server),
 548                sign_in_status: SignInStatus::Authorized,
 549                registered_buffers: Default::default(),
 550            }),
 551            _subscriptions: vec![
 552                send_focus_notification,
 553                cx.on_app_quit(Self::shutdown_language_server),
 554            ],
 555            buffers: Default::default(),
 556        });
 557        (this, fake_server)
 558    }
 559
 560    async fn start_language_server(
 561        new_server_id: LanguageServerId,
 562        fs: Arc<dyn Fs>,
 563        node_runtime: NodeRuntime,
 564        env: Option<HashMap<String, String>>,
 565        this: WeakEntity<Self>,
 566        awaiting_sign_in_after_start: bool,
 567        cx: &mut AsyncApp,
 568    ) {
 569        let start_language_server = async {
 570            let server_path = get_copilot_lsp(fs, node_runtime.clone()).await?;
 571            let node_path = node_runtime.binary_path().await?;
 572            ensure_node_version_for_copilot(&node_path).await?;
 573
 574            let arguments: Vec<OsString> = vec![
 575                "--experimental-sqlite".into(),
 576                server_path.into(),
 577                "--stdio".into(),
 578            ];
 579            let binary = LanguageServerBinary {
 580                path: node_path,
 581                arguments,
 582                env,
 583            };
 584
 585            let root_path = if cfg!(target_os = "windows") {
 586                Path::new("C:/")
 587            } else {
 588                Path::new("/")
 589            };
 590
 591            let server_name = LanguageServerName("copilot".into());
 592            let server = LanguageServer::new(
 593                Arc::new(Mutex::new(None)),
 594                new_server_id,
 595                server_name,
 596                binary,
 597                root_path,
 598                None,
 599                Default::default(),
 600                cx,
 601            )?;
 602
 603            server
 604                .on_notification::<DidChangeStatus, _>({
 605                    let this = this.clone();
 606                    move |params, cx| {
 607                        if params.kind == request::StatusKind::Normal {
 608                            let this = this.clone();
 609                            cx.spawn(async move |cx| {
 610                                let lsp = this
 611                                    .read_with(cx, |copilot, _| {
 612                                        if let CopilotServer::Running(server) = &copilot.server {
 613                                            Some(server.lsp.clone())
 614                                        } else {
 615                                            None
 616                                        }
 617                                    })
 618                                    .ok()
 619                                    .flatten();
 620                                let Some(lsp) = lsp else { return };
 621                                let request_timeout = cx.update(|cx| {
 622                                    ProjectSettings::get_global(cx)
 623                                        .global_lsp_settings
 624                                        .get_request_timeout()
 625                                });
 626                                let status = lsp
 627                                    .request::<request::CheckStatus>(
 628                                        request::CheckStatusParams {
 629                                            local_checks_only: false,
 630                                        },
 631                                        request_timeout,
 632                                    )
 633                                    .await
 634                                    .into_response()
 635                                    .ok();
 636                                if let Some(status) = status {
 637                                    this.update(cx, |copilot, cx| {
 638                                        copilot.update_sign_in_status(status, cx);
 639                                    })
 640                                    .ok();
 641                                }
 642                            })
 643                            .detach();
 644                        }
 645                    }
 646                })
 647                .detach();
 648
 649            server
 650                .on_request::<lsp::request::ShowDocument, _, _>(move |params, cx| {
 651                    if params.external.unwrap_or(false) {
 652                        let url = params.uri.to_string();
 653                        cx.update(|cx| cx.open_url(&url));
 654                    }
 655                    async move { Ok(lsp::ShowDocumentResult { success: true }) }
 656                })
 657                .detach();
 658
 659            let configuration = lsp::DidChangeConfigurationParams {
 660                settings: Default::default(),
 661            };
 662
 663            let editor_info = request::SetEditorInfoParams {
 664                editor_info: request::EditorInfo {
 665                    name: "zed".into(),
 666                    version: env!("CARGO_PKG_VERSION").into(),
 667                },
 668                editor_plugin_info: request::EditorPluginInfo {
 669                    name: "zed-copilot".into(),
 670                    version: "0.0.1".into(),
 671                },
 672            };
 673            let editor_info_json = serde_json::to_value(&editor_info)?;
 674
 675            let request_timeout = cx.update(|app| {
 676                ProjectSettings::get_global(app)
 677                    .global_lsp_settings
 678                    .get_request_timeout()
 679            });
 680
 681            let server = cx
 682                .update(|cx| {
 683                    let mut params = server.default_initialize_params(false, false, cx);
 684                    params.initialization_options = Some(editor_info_json);
 685                    params
 686                        .capabilities
 687                        .window
 688                        .get_or_insert_with(Default::default)
 689                        .show_document =
 690                        Some(lsp::ShowDocumentClientCapabilities { support: true });
 691                    server.initialize(params, configuration.into(), request_timeout, cx)
 692                })
 693                .await?;
 694
 695            this.update(cx, |_, cx| notify_did_change_config_to_server(&server, cx))?
 696                .context("copilot: did change configuration")?;
 697
 698            let status = server
 699                .request::<request::CheckStatus>(
 700                    request::CheckStatusParams {
 701                        local_checks_only: false,
 702                    },
 703                    request_timeout,
 704                )
 705                .await
 706                .into_response()
 707                .context("copilot: check status")?;
 708
 709            anyhow::Ok((server, status))
 710        };
 711
 712        let server = start_language_server.await;
 713        this.update(cx, |this, cx| {
 714            cx.notify();
 715
 716            if env::var("ZED_FORCE_COPILOT_ERROR").is_ok() {
 717                this.server = CopilotServer::Error(
 718                    "Forced error for testing (ZED_FORCE_COPILOT_ERROR)".into(),
 719                );
 720                return;
 721            }
 722
 723            match server {
 724                Ok((server, status)) => {
 725                    this.server = CopilotServer::Running(RunningCopilotServer {
 726                        lsp: server,
 727                        sign_in_status: SignInStatus::SignedOut {
 728                            awaiting_signing_in: awaiting_sign_in_after_start,
 729                        },
 730                        registered_buffers: Default::default(),
 731                    });
 732                    this.update_sign_in_status(status, cx);
 733                }
 734                Err(error) => {
 735                    this.server = CopilotServer::Error(error.to_string().into());
 736                    cx.notify()
 737                }
 738            }
 739        })
 740        .ok();
 741    }
 742
 743    pub fn is_authenticated(&self) -> bool {
 744        return matches!(
 745            self.server,
 746            CopilotServer::Running(RunningCopilotServer {
 747                sign_in_status: SignInStatus::Authorized,
 748                ..
 749            })
 750        );
 751    }
 752
 753    pub fn sign_in(&mut self, cx: &mut Context<Self>) -> Task<Result<()>> {
 754        if let CopilotServer::Running(server) = &mut self.server {
 755            let task = match &server.sign_in_status {
 756                SignInStatus::Authorized => Task::ready(Ok(())).shared(),
 757                SignInStatus::SigningIn { task, .. } => {
 758                    cx.notify();
 759                    task.clone()
 760                }
 761                SignInStatus::SignedOut { .. } | SignInStatus::Unauthorized => {
 762                    let lsp = server.lsp.clone();
 763
 764                    let request_timeout = ProjectSettings::get_global(cx)
 765                        .global_lsp_settings
 766                        .get_request_timeout();
 767
 768                    let task = cx
 769                        .spawn(async move |this, cx| {
 770                            let sign_in = async {
 771                                let flow = lsp
 772                                    .request::<request::SignIn>(
 773                                        request::SignInParams {},
 774                                        request_timeout,
 775                                    )
 776                                    .await
 777                                    .into_response()
 778                                    .context("copilot sign-in")?;
 779
 780                                this.update(cx, |this, cx| {
 781                                    if let CopilotServer::Running(RunningCopilotServer {
 782                                        sign_in_status: status,
 783                                        ..
 784                                    }) = &mut this.server
 785                                        && let SignInStatus::SigningIn {
 786                                            prompt: prompt_flow,
 787                                            ..
 788                                        } = status
 789                                    {
 790                                        *prompt_flow = Some(flow.clone());
 791                                        cx.notify();
 792                                    }
 793                                })?;
 794
 795                                anyhow::Ok(())
 796                            };
 797
 798                            let sign_in = sign_in.await;
 799                            this.update(cx, |this, cx| match sign_in {
 800                                Ok(()) => Ok(()),
 801                                Err(error) => {
 802                                    this.update_sign_in_status(
 803                                        request::SignInStatus::NotSignedIn,
 804                                        cx,
 805                                    );
 806                                    Err(Arc::new(error))
 807                                }
 808                            })?
 809                        })
 810                        .shared();
 811                    server.sign_in_status = SignInStatus::SigningIn {
 812                        prompt: None,
 813                        task: task.clone(),
 814                    };
 815                    cx.notify();
 816                    task
 817                }
 818            };
 819
 820            cx.background_spawn(task.map_err(|err| anyhow!("{err:?}")))
 821        } else {
 822            // If we're downloading, wait until download is finished
 823            // If we're in a stuck state, display to the user
 824            Task::ready(Err(anyhow!("copilot hasn't started yet")))
 825        }
 826    }
 827
 828    pub fn sign_out(&mut self, cx: &mut Context<Self>) -> Task<Result<()>> {
 829        self.update_sign_in_status(request::SignInStatus::NotSignedIn, cx);
 830        match &self.server {
 831            CopilotServer::Running(RunningCopilotServer { lsp: server, .. }) => {
 832                let request_timeout = ProjectSettings::get_global(cx)
 833                    .global_lsp_settings
 834                    .get_request_timeout();
 835
 836                let server = server.clone();
 837                cx.background_spawn(async move {
 838                    server
 839                        .request::<request::SignOut>(request::SignOutParams {}, request_timeout)
 840                        .await
 841                        .into_response()
 842                        .context("copilot: sign in confirm")?;
 843                    anyhow::Ok(())
 844                })
 845            }
 846            CopilotServer::Disabled => cx.background_spawn(async {
 847                clear_copilot_config_dir().await;
 848                anyhow::Ok(())
 849            }),
 850            _ => Task::ready(Err(anyhow!("copilot hasn't started yet"))),
 851        }
 852    }
 853
 854    pub fn reinstall(&mut self, cx: &mut Context<Self>) -> Shared<Task<()>> {
 855        let language_settings = all_language_settings(None, cx);
 856        let env = self.build_env(&language_settings.edit_predictions.copilot);
 857        let start_task = cx
 858            .spawn({
 859                let fs = self.fs.clone();
 860                let node_runtime = self.node_runtime.clone();
 861                let server_id = self.server_id;
 862                async move |this, cx| {
 863                    clear_copilot_dir().await;
 864                    Self::start_language_server(server_id, fs, node_runtime, env, this, false, cx)
 865                        .await
 866                }
 867            })
 868            .shared();
 869
 870        self.server = CopilotServer::Starting {
 871            task: start_task.clone(),
 872        };
 873
 874        cx.notify();
 875
 876        start_task
 877    }
 878
 879    pub fn language_server(&self) -> Option<&Arc<LanguageServer>> {
 880        if let CopilotServer::Running(server) = &self.server {
 881            Some(&server.lsp)
 882        } else {
 883            None
 884        }
 885    }
 886
 887    pub fn register_buffer(&mut self, buffer: &Entity<Buffer>, cx: &mut Context<Self>) {
 888        let weak_buffer = buffer.downgrade();
 889        self.buffers.insert(weak_buffer.clone());
 890
 891        if let CopilotServer::Running(RunningCopilotServer {
 892            lsp: server,
 893            sign_in_status: status,
 894            registered_buffers,
 895            ..
 896        }) = &mut self.server
 897        {
 898            if !matches!(status, SignInStatus::Authorized) {
 899                return;
 900            }
 901
 902            let entry = registered_buffers.entry(buffer.entity_id());
 903            if let Entry::Vacant(e) = entry {
 904                let Ok(uri) = uri_for_buffer(buffer, cx) else {
 905                    return;
 906                };
 907                let language_id = id_for_language(buffer.read(cx).language());
 908                let snapshot = buffer.read(cx).snapshot();
 909                server
 910                    .notify::<lsp::notification::DidOpenTextDocument>(
 911                        lsp::DidOpenTextDocumentParams {
 912                            text_document: lsp::TextDocumentItem {
 913                                uri: uri.clone(),
 914                                language_id: language_id.clone(),
 915                                version: 0,
 916                                text: snapshot.text(),
 917                            },
 918                        },
 919                    )
 920                    .ok();
 921
 922                e.insert(RegisteredBuffer {
 923                    uri,
 924                    language_id,
 925                    snapshot,
 926                    snapshot_version: 0,
 927                    pending_buffer_change: Task::ready(Some(())),
 928                    _subscriptions: [
 929                        cx.subscribe(buffer, |this, buffer, event, cx| {
 930                            this.handle_buffer_event(buffer, event, cx).log_err();
 931                        }),
 932                        cx.observe_release(buffer, move |this, _buffer, _cx| {
 933                            this.buffers.remove(&weak_buffer);
 934                            this.unregister_buffer(&weak_buffer);
 935                        }),
 936                    ],
 937                });
 938            }
 939        }
 940    }
 941
 942    fn handle_buffer_event(
 943        &mut self,
 944        buffer: Entity<Buffer>,
 945        event: &language::BufferEvent,
 946        cx: &mut Context<Self>,
 947    ) -> Result<()> {
 948        if let Ok(server) = self.server.as_running()
 949            && let Some(registered_buffer) = server.registered_buffers.get_mut(&buffer.entity_id())
 950        {
 951            match event {
 952                language::BufferEvent::Edited => {
 953                    drop(registered_buffer.report_changes(&buffer, cx));
 954                }
 955                language::BufferEvent::Saved => {
 956                    server
 957                        .lsp
 958                        .notify::<lsp::notification::DidSaveTextDocument>(
 959                            lsp::DidSaveTextDocumentParams {
 960                                text_document: lsp::TextDocumentIdentifier::new(
 961                                    registered_buffer.uri.clone(),
 962                                ),
 963                                text: None,
 964                            },
 965                        )
 966                        .ok();
 967                }
 968                language::BufferEvent::FileHandleChanged
 969                | language::BufferEvent::LanguageChanged(_) => {
 970                    let new_language_id = id_for_language(buffer.read(cx).language());
 971                    let Ok(new_uri) = uri_for_buffer(&buffer, cx) else {
 972                        return Ok(());
 973                    };
 974                    if new_uri != registered_buffer.uri
 975                        || new_language_id != registered_buffer.language_id
 976                    {
 977                        let old_uri = mem::replace(&mut registered_buffer.uri, new_uri);
 978                        registered_buffer.language_id = new_language_id;
 979                        server
 980                            .lsp
 981                            .notify::<lsp::notification::DidCloseTextDocument>(
 982                                lsp::DidCloseTextDocumentParams {
 983                                    text_document: lsp::TextDocumentIdentifier::new(old_uri),
 984                                },
 985                            )
 986                            .ok();
 987                        server
 988                            .lsp
 989                            .notify::<lsp::notification::DidOpenTextDocument>(
 990                                lsp::DidOpenTextDocumentParams {
 991                                    text_document: lsp::TextDocumentItem::new(
 992                                        registered_buffer.uri.clone(),
 993                                        registered_buffer.language_id.clone(),
 994                                        registered_buffer.snapshot_version,
 995                                        registered_buffer.snapshot.text(),
 996                                    ),
 997                                },
 998                            )
 999                            .ok();
1000                    }
1001                }
1002                _ => {}
1003            }
1004        }
1005
1006        Ok(())
1007    }
1008
1009    fn unregister_buffer(&mut self, buffer: &WeakEntity<Buffer>) {
1010        if let Ok(server) = self.server.as_running()
1011            && let Some(buffer) = server.registered_buffers.remove(&buffer.entity_id())
1012        {
1013            server
1014                .lsp
1015                .notify::<lsp::notification::DidCloseTextDocument>(
1016                    lsp::DidCloseTextDocumentParams {
1017                        text_document: lsp::TextDocumentIdentifier::new(buffer.uri),
1018                    },
1019                )
1020                .ok();
1021        }
1022    }
1023
1024    pub(crate) fn completions(
1025        &mut self,
1026        buffer: &Entity<Buffer>,
1027        position: Anchor,
1028        cx: &mut Context<Self>,
1029    ) -> Task<Result<Vec<CopilotEditPrediction>>> {
1030        self.register_buffer(buffer, cx);
1031
1032        let server = match self.server.as_authenticated() {
1033            Ok(server) => server,
1034            Err(error) => return Task::ready(Err(error)),
1035        };
1036        let buffer_entity = buffer.clone();
1037        let lsp = server.lsp.clone();
1038        let registered_buffer = server
1039            .registered_buffers
1040            .get_mut(&buffer.entity_id())
1041            .unwrap();
1042        let pending_snapshot = registered_buffer.report_changes(buffer, cx);
1043        let buffer = buffer.read(cx);
1044        let uri = registered_buffer.uri.clone();
1045        let position = position.to_point_utf16(buffer);
1046        let snapshot = buffer.snapshot();
1047        let settings = snapshot.settings_at(0, cx);
1048        let tab_size = settings.tab_size.get();
1049        let hard_tabs = settings.hard_tabs;
1050        drop(settings);
1051
1052        let request_timeout = ProjectSettings::get_global(cx)
1053            .global_lsp_settings
1054            .get_request_timeout();
1055
1056        let nes_enabled = AllLanguageSettings::get_global(cx)
1057            .edit_predictions
1058            .copilot
1059            .enable_next_edit_suggestions
1060            .unwrap_or(true);
1061
1062        cx.background_spawn(async move {
1063            let (version, snapshot) = pending_snapshot.await?;
1064            let lsp_position = point_to_lsp(position);
1065
1066            let nes_fut = if nes_enabled {
1067                lsp.request::<NextEditSuggestions>(
1068                    request::NextEditSuggestionsParams {
1069                        text_document: lsp::VersionedTextDocumentIdentifier {
1070                            uri: uri.clone(),
1071                            version,
1072                        },
1073                        position: lsp_position,
1074                    },
1075                    request_timeout,
1076                )
1077                .map(|resp| {
1078                    resp.into_response()
1079                        .ok()
1080                        .map(|result| {
1081                            result
1082                                .edits
1083                                .into_iter()
1084                                .map(|completion| {
1085                                    let start = snapshot.clip_point_utf16(
1086                                        point_from_lsp(completion.range.start),
1087                                        Bias::Left,
1088                                    );
1089                                    let end = snapshot.clip_point_utf16(
1090                                        point_from_lsp(completion.range.end),
1091                                        Bias::Left,
1092                                    );
1093                                    CopilotEditPrediction {
1094                                        buffer: buffer_entity.clone(),
1095                                        range: snapshot.anchor_before(start)
1096                                            ..snapshot.anchor_after(end),
1097                                        text: completion.text,
1098                                        command: completion.command,
1099                                        snapshot: snapshot.clone(),
1100                                        source: CompletionSource::NextEditSuggestion,
1101                                    }
1102                                })
1103                                .collect::<Vec<_>>()
1104                        })
1105                        .unwrap_or_default()
1106                })
1107                .left_future()
1108                .fuse()
1109            } else {
1110                future::ready(Vec::<CopilotEditPrediction>::new())
1111                    .right_future()
1112                    .fuse()
1113            };
1114
1115            let inline_fut = lsp
1116                .request::<InlineCompletions>(
1117                    request::InlineCompletionsParams {
1118                        text_document: lsp::VersionedTextDocumentIdentifier {
1119                            uri: uri.clone(),
1120                            version,
1121                        },
1122                        position: lsp_position,
1123                        context: InlineCompletionContext {
1124                            trigger_kind: InlineCompletionTriggerKind::Automatic,
1125                        },
1126                        formatting_options: Some(FormattingOptions {
1127                            tab_size,
1128                            insert_spaces: !hard_tabs,
1129                        }),
1130                    },
1131                    request_timeout,
1132                )
1133                .map(|resp| {
1134                    resp.into_response()
1135                        .ok()
1136                        .map(|result| {
1137                            result
1138                                .items
1139                                .into_iter()
1140                                .map(|item| {
1141                                    let start = snapshot.clip_point_utf16(
1142                                        point_from_lsp(item.range.start),
1143                                        Bias::Left,
1144                                    );
1145                                    let end = snapshot.clip_point_utf16(
1146                                        point_from_lsp(item.range.end),
1147                                        Bias::Left,
1148                                    );
1149                                    CopilotEditPrediction {
1150                                        buffer: buffer_entity.clone(),
1151                                        range: snapshot.anchor_before(start)
1152                                            ..snapshot.anchor_after(end),
1153                                        text: item.insert_text,
1154                                        command: item.command,
1155                                        snapshot: snapshot.clone(),
1156                                        source: CompletionSource::InlineCompletion,
1157                                    }
1158                                })
1159                                .collect::<Vec<_>>()
1160                        })
1161                        .unwrap_or_default()
1162                })
1163                .fuse();
1164
1165            futures::pin_mut!(nes_fut, inline_fut);
1166
1167            let mut nes_result: Option<Vec<CopilotEditPrediction>> = None;
1168            let mut inline_result: Option<Vec<CopilotEditPrediction>> = None;
1169
1170            loop {
1171                select_biased! {
1172                    nes = nes_fut => {
1173                        if !nes.is_empty() {
1174                            return Ok(nes);
1175                        }
1176                        nes_result = Some(nes);
1177                    }
1178                    inline = inline_fut => {
1179                        if !inline.is_empty() {
1180                            return Ok(inline);
1181                        }
1182                        inline_result = Some(inline);
1183                    }
1184                    complete => break,
1185                }
1186
1187                if let (Some(nes), Some(inline)) = (&nes_result, &inline_result) {
1188                    return if !nes.is_empty() {
1189                        Ok(nes.clone())
1190                    } else {
1191                        Ok(inline.clone())
1192                    };
1193                }
1194            }
1195
1196            Ok(nes_result.or(inline_result).unwrap_or_default())
1197        })
1198    }
1199
1200    pub(crate) fn accept_completion(
1201        &mut self,
1202        completion: &CopilotEditPrediction,
1203        cx: &mut Context<Self>,
1204    ) -> Task<Result<()>> {
1205        let server = match self.server.as_authenticated() {
1206            Ok(server) => server,
1207            Err(error) => return Task::ready(Err(error)),
1208        };
1209        if let Some(command) = &completion.command {
1210            let request_timeout = ProjectSettings::get_global(cx)
1211                .global_lsp_settings
1212                .get_request_timeout();
1213
1214            let request = server.lsp.request::<lsp::ExecuteCommand>(
1215                lsp::ExecuteCommandParams {
1216                    command: command.command.clone(),
1217                    arguments: command.arguments.clone().unwrap_or_default(),
1218                    ..Default::default()
1219                },
1220                request_timeout,
1221            );
1222            cx.background_spawn(async move {
1223                request
1224                    .await
1225                    .into_response()
1226                    .context("copilot: notify accepted")?;
1227                Ok(())
1228            })
1229        } else {
1230            Task::ready(Ok(()))
1231        }
1232    }
1233
1234    pub fn status(&self) -> Status {
1235        match &self.server {
1236            CopilotServer::Starting { task } => Status::Starting { task: task.clone() },
1237            CopilotServer::Disabled => Status::Disabled,
1238            CopilotServer::Error(error) => Status::Error(error.clone()),
1239            CopilotServer::Running(RunningCopilotServer { sign_in_status, .. }) => {
1240                match sign_in_status {
1241                    SignInStatus::Authorized => Status::Authorized,
1242                    SignInStatus::Unauthorized => Status::Unauthorized,
1243                    SignInStatus::SigningIn { prompt, .. } => Status::SigningIn {
1244                        prompt: prompt.clone(),
1245                    },
1246                    SignInStatus::SignedOut {
1247                        awaiting_signing_in,
1248                    } => Status::SignedOut {
1249                        awaiting_signing_in: *awaiting_signing_in,
1250                    },
1251                }
1252            }
1253        }
1254    }
1255
1256    pub fn update_sign_in_status(
1257        &mut self,
1258        lsp_status: request::SignInStatus,
1259        cx: &mut Context<Self>,
1260    ) {
1261        self.buffers.retain(|buffer| buffer.is_upgradable());
1262
1263        if let Ok(server) = self.server.as_running() {
1264            match lsp_status {
1265                request::SignInStatus::Ok { user: Some(_) }
1266                | request::SignInStatus::MaybeOk { .. }
1267                | request::SignInStatus::AlreadySignedIn { .. } => {
1268                    server.sign_in_status = SignInStatus::Authorized;
1269                    cx.emit(Event::CopilotAuthSignedIn);
1270                    for buffer in self.buffers.iter().cloned().collect::<Vec<_>>() {
1271                        if let Some(buffer) = buffer.upgrade() {
1272                            self.register_buffer(&buffer, cx);
1273                        }
1274                    }
1275                }
1276                request::SignInStatus::NotAuthorized { .. } => {
1277                    server.sign_in_status = SignInStatus::Unauthorized;
1278                    for buffer in self.buffers.iter().cloned().collect::<Vec<_>>() {
1279                        self.unregister_buffer(&buffer);
1280                    }
1281                }
1282                request::SignInStatus::Ok { user: None } | request::SignInStatus::NotSignedIn => {
1283                    if !matches!(server.sign_in_status, SignInStatus::SignedOut { .. }) {
1284                        server.sign_in_status = SignInStatus::SignedOut {
1285                            awaiting_signing_in: false,
1286                        };
1287                    }
1288                    cx.emit(Event::CopilotAuthSignedOut);
1289                    for buffer in self.buffers.iter().cloned().collect::<Vec<_>>() {
1290                        self.unregister_buffer(&buffer);
1291                    }
1292                }
1293            }
1294
1295            cx.notify();
1296        }
1297    }
1298
1299    fn update_action_visibilities(&self, cx: &mut App) {
1300        let signed_in_actions = [
1301            TypeId::of::<Suggest>(),
1302            TypeId::of::<NextSuggestion>(),
1303            TypeId::of::<PreviousSuggestion>(),
1304            TypeId::of::<Reinstall>(),
1305        ];
1306        let auth_actions = [TypeId::of::<SignOut>()];
1307        let no_auth_actions = [TypeId::of::<SignIn>()];
1308        let status = self.status();
1309
1310        let is_ai_disabled = DisableAiSettings::get_global(cx).disable_ai;
1311        let filter = CommandPaletteFilter::global_mut(cx);
1312
1313        if is_ai_disabled {
1314            filter.hide_action_types(&signed_in_actions);
1315            filter.hide_action_types(&auth_actions);
1316            filter.hide_action_types(&no_auth_actions);
1317        } else {
1318            match status {
1319                Status::Disabled => {
1320                    filter.hide_action_types(&signed_in_actions);
1321                    filter.hide_action_types(&auth_actions);
1322                    filter.hide_action_types(&no_auth_actions);
1323                }
1324                Status::Authorized => {
1325                    filter.hide_action_types(&no_auth_actions);
1326                    filter.show_action_types(signed_in_actions.iter().chain(&auth_actions));
1327                }
1328                _ => {
1329                    filter.hide_action_types(&signed_in_actions);
1330                    filter.hide_action_types(&auth_actions);
1331                    filter.show_action_types(&no_auth_actions);
1332                }
1333            }
1334        }
1335    }
1336}
1337
1338fn id_for_language(language: Option<&Arc<Language>>) -> String {
1339    language
1340        .map(|language| language.lsp_id())
1341        .unwrap_or_else(|| "plaintext".to_string())
1342}
1343
1344fn uri_for_buffer(buffer: &Entity<Buffer>, cx: &App) -> Result<lsp::Uri, ()> {
1345    if let Some(file) = buffer.read(cx).file().and_then(|file| file.as_local()) {
1346        lsp::Uri::from_file_path(file.abs_path(cx))
1347    } else {
1348        format!("buffer://{}", buffer.entity_id())
1349            .parse()
1350            .map_err(|_| ())
1351    }
1352}
1353
1354fn notify_did_change_config_to_server(
1355    server: &Arc<LanguageServer>,
1356    cx: &mut Context<Copilot>,
1357) -> std::result::Result<(), anyhow::Error> {
1358    let copilot_settings = all_language_settings(None, cx)
1359        .edit_predictions
1360        .copilot
1361        .clone();
1362
1363    if let Some(copilot_chat) = copilot_chat::CopilotChat::global(cx) {
1364        copilot_chat.update(cx, |chat, cx| {
1365            chat.set_configuration(
1366                copilot_chat::CopilotChatConfiguration {
1367                    enterprise_uri: copilot_settings.enterprise_uri.clone(),
1368                },
1369                cx,
1370            );
1371        });
1372    }
1373
1374    let settings = json!({
1375        "http": {
1376            "proxy": copilot_settings.proxy,
1377            "proxyStrictSSL": !copilot_settings.proxy_no_verify.unwrap_or(false)
1378        },
1379        "github-enterprise": {
1380            "uri": copilot_settings.enterprise_uri
1381        }
1382    });
1383
1384    server
1385        .notify::<lsp::notification::DidChangeConfiguration>(lsp::DidChangeConfigurationParams {
1386            settings,
1387        })
1388        .ok();
1389    Ok(())
1390}
1391
1392async fn clear_copilot_dir() {
1393    remove_matching(paths::copilot_dir(), |_| true).await
1394}
1395
1396async fn clear_copilot_config_dir() {
1397    remove_matching(copilot_chat::copilot_chat_config_dir(), |_| true).await
1398}
1399
1400async fn ensure_node_version_for_copilot(node_path: &Path) -> anyhow::Result<()> {
1401    const MIN_COPILOT_NODE_VERSION: Version = Version::new(20, 8, 0);
1402
1403    log::info!("Checking Node.js version for Copilot at: {:?}", node_path);
1404
1405    let output = util::command::new_command(node_path)
1406        .arg("--version")
1407        .output()
1408        .await
1409        .with_context(|| format!("checking Node.js version at {:?}", node_path))?;
1410
1411    if !output.status.success() {
1412        anyhow::bail!(
1413            "failed to run node --version for Copilot. stdout: {}, stderr: {}",
1414            String::from_utf8_lossy(&output.stdout),
1415            String::from_utf8_lossy(&output.stderr),
1416        );
1417    }
1418
1419    let version_str = String::from_utf8_lossy(&output.stdout);
1420    let version = Version::parse(version_str.trim().trim_start_matches('v'))
1421        .with_context(|| format!("parsing Node.js version from '{}'", version_str.trim()))?;
1422
1423    if version < MIN_COPILOT_NODE_VERSION {
1424        anyhow::bail!(
1425            "GitHub Copilot language server requires Node.js {MIN_COPILOT_NODE_VERSION} or later, but found {version}. \
1426            Please update your Node.js version or configure a different Node.js path in settings."
1427        );
1428    }
1429
1430    log::info!(
1431        "Node.js version {} meets Copilot requirements (>= {})",
1432        version,
1433        MIN_COPILOT_NODE_VERSION
1434    );
1435    Ok(())
1436}
1437
1438async fn get_copilot_lsp(fs: Arc<dyn Fs>, node_runtime: NodeRuntime) -> anyhow::Result<PathBuf> {
1439    const PACKAGE_NAME: &str = "@github/copilot-language-server";
1440    const SERVER_PATH: &str =
1441        "node_modules/@github/copilot-language-server/dist/language-server.js";
1442
1443    let latest_version = node_runtime
1444        .npm_package_latest_version(PACKAGE_NAME)
1445        .await?;
1446    let server_path = paths::copilot_dir().join(SERVER_PATH);
1447
1448    fs.create_dir(paths::copilot_dir()).await?;
1449
1450    let should_install = node_runtime
1451        .should_install_npm_package(
1452            PACKAGE_NAME,
1453            &server_path,
1454            paths::copilot_dir(),
1455            VersionStrategy::Latest(&latest_version),
1456        )
1457        .await;
1458    if should_install {
1459        node_runtime
1460            .npm_install_packages(
1461                paths::copilot_dir(),
1462                &[(PACKAGE_NAME, &latest_version.to_string())],
1463            )
1464            .await?;
1465    }
1466
1467    Ok(server_path)
1468}
1469
1470#[cfg(test)]
1471mod tests {
1472    use super::*;
1473    use fs::FakeFs;
1474    use gpui::TestAppContext;
1475    use language::language_settings::AllLanguageSettings;
1476    use node_runtime::NodeRuntime;
1477    use settings::{Settings, SettingsStore};
1478    use util::{
1479        path,
1480        paths::PathStyle,
1481        rel_path::{RelPath, rel_path},
1482    };
1483
1484    #[gpui::test]
1485    async fn test_copilot_does_not_start_when_ai_disabled(cx: &mut TestAppContext) {
1486        cx.update(|cx| {
1487            let store = SettingsStore::test(cx);
1488            cx.set_global(store);
1489            DisableAiSettings::register(cx);
1490            AllLanguageSettings::register(cx);
1491
1492            // Set disable_ai to true before creating Copilot
1493            DisableAiSettings::override_global(DisableAiSettings { disable_ai: true }, cx);
1494        });
1495
1496        let copilot = cx.new(|cx| Copilot {
1497            server_id: LanguageServerId(0),
1498            fs: FakeFs::new(cx.background_executor().clone()),
1499            node_runtime: NodeRuntime::unavailable(),
1500            server: CopilotServer::Disabled,
1501            buffers: Default::default(),
1502            _subscriptions: vec![],
1503        });
1504
1505        // Try to start copilot - it should remain disabled
1506        copilot.update(cx, |copilot, cx| {
1507            copilot.start_copilot(false, false, cx);
1508        });
1509
1510        // Verify the server is still disabled
1511        copilot.read_with(cx, |copilot, _| {
1512            assert!(
1513                matches!(copilot.server, CopilotServer::Disabled),
1514                "Copilot should not start when disable_ai is true"
1515            );
1516        });
1517    }
1518
1519    #[gpui::test]
1520    async fn test_copilot_stops_when_ai_becomes_disabled(cx: &mut TestAppContext) {
1521        cx.update(|cx| {
1522            let store = SettingsStore::test(cx);
1523            cx.set_global(store);
1524            DisableAiSettings::register(cx);
1525            AllLanguageSettings::register(cx);
1526
1527            // AI is initially enabled
1528            DisableAiSettings::override_global(DisableAiSettings { disable_ai: false }, cx);
1529        });
1530
1531        // Create a fake Copilot that's already running, with the settings observer
1532        let (copilot, _lsp) = Copilot::fake(cx);
1533
1534        // Add the settings observer that handles disable_ai changes
1535        copilot.update(cx, |_, cx| {
1536            cx.observe_global::<SettingsStore>(move |this, cx| {
1537                let ai_disabled = DisableAiSettings::get_global(cx).disable_ai;
1538
1539                if ai_disabled {
1540                    if !matches!(this.server, CopilotServer::Disabled) {
1541                        let shutdown = match mem::replace(&mut this.server, CopilotServer::Disabled)
1542                        {
1543                            CopilotServer::Running(server) => {
1544                                let shutdown_future = server.lsp.shutdown();
1545                                Some(cx.background_spawn(async move {
1546                                    if let Some(fut) = shutdown_future {
1547                                        fut.await;
1548                                    }
1549                                }))
1550                            }
1551                            _ => None,
1552                        };
1553                        if let Some(task) = shutdown {
1554                            task.detach();
1555                        }
1556                        cx.notify();
1557                    }
1558                }
1559            })
1560            .detach();
1561        });
1562
1563        // Verify copilot is running
1564        copilot.read_with(cx, |copilot, _| {
1565            assert!(
1566                matches!(copilot.server, CopilotServer::Running(_)),
1567                "Copilot should be running initially"
1568            );
1569        });
1570
1571        // Now disable AI
1572        cx.update(|cx| {
1573            DisableAiSettings::override_global(DisableAiSettings { disable_ai: true }, cx);
1574        });
1575
1576        // The settings observer should have stopped the server
1577        cx.run_until_parked();
1578
1579        copilot.read_with(cx, |copilot, _| {
1580            assert!(
1581                matches!(copilot.server, CopilotServer::Disabled),
1582                "Copilot should be disabled after disable_ai is set to true"
1583            );
1584        });
1585    }
1586
1587    #[gpui::test(iterations = 10)]
1588    async fn test_buffer_management(cx: &mut TestAppContext) {
1589        init_test(cx);
1590        let (copilot, mut lsp) = Copilot::fake(cx);
1591
1592        let buffer_1 = cx.new(|cx| Buffer::local("Hello", cx));
1593        let buffer_1_uri: lsp::Uri = format!("buffer://{}", buffer_1.entity_id().as_u64())
1594            .parse()
1595            .unwrap();
1596        copilot.update(cx, |copilot, cx| copilot.register_buffer(&buffer_1, cx));
1597        assert_eq!(
1598            lsp.receive_notification::<lsp::notification::DidOpenTextDocument>()
1599                .await,
1600            lsp::DidOpenTextDocumentParams {
1601                text_document: lsp::TextDocumentItem::new(
1602                    buffer_1_uri.clone(),
1603                    "plaintext".into(),
1604                    0,
1605                    "Hello".into()
1606                ),
1607            }
1608        );
1609
1610        let buffer_2 = cx.new(|cx| Buffer::local("Goodbye", cx));
1611        let buffer_2_uri: lsp::Uri = format!("buffer://{}", buffer_2.entity_id().as_u64())
1612            .parse()
1613            .unwrap();
1614        copilot.update(cx, |copilot, cx| copilot.register_buffer(&buffer_2, cx));
1615        assert_eq!(
1616            lsp.receive_notification::<lsp::notification::DidOpenTextDocument>()
1617                .await,
1618            lsp::DidOpenTextDocumentParams {
1619                text_document: lsp::TextDocumentItem::new(
1620                    buffer_2_uri.clone(),
1621                    "plaintext".into(),
1622                    0,
1623                    "Goodbye".into()
1624                ),
1625            }
1626        );
1627
1628        buffer_1.update(cx, |buffer, cx| buffer.edit([(5..5, " world")], None, cx));
1629        assert_eq!(
1630            lsp.receive_notification::<lsp::notification::DidChangeTextDocument>()
1631                .await,
1632            lsp::DidChangeTextDocumentParams {
1633                text_document: lsp::VersionedTextDocumentIdentifier::new(buffer_1_uri.clone(), 1),
1634                content_changes: vec![lsp::TextDocumentContentChangeEvent {
1635                    range: Some(lsp::Range::new(
1636                        lsp::Position::new(0, 5),
1637                        lsp::Position::new(0, 5)
1638                    )),
1639                    range_length: None,
1640                    text: " world".into(),
1641                }],
1642            }
1643        );
1644
1645        // Ensure updates to the file are reflected in the LSP.
1646        buffer_1.update(cx, |buffer, cx| {
1647            buffer.file_updated(
1648                Arc::new(File {
1649                    abs_path: path!("/root/child/buffer-1").into(),
1650                    path: rel_path("child/buffer-1").into(),
1651                }),
1652                cx,
1653            )
1654        });
1655        assert_eq!(
1656            lsp.receive_notification::<lsp::notification::DidCloseTextDocument>()
1657                .await,
1658            lsp::DidCloseTextDocumentParams {
1659                text_document: lsp::TextDocumentIdentifier::new(buffer_1_uri),
1660            }
1661        );
1662        let buffer_1_uri = lsp::Uri::from_file_path(path!("/root/child/buffer-1")).unwrap();
1663        assert_eq!(
1664            lsp.receive_notification::<lsp::notification::DidOpenTextDocument>()
1665                .await,
1666            lsp::DidOpenTextDocumentParams {
1667                text_document: lsp::TextDocumentItem::new(
1668                    buffer_1_uri.clone(),
1669                    "plaintext".into(),
1670                    1,
1671                    "Hello world".into()
1672                ),
1673            }
1674        );
1675
1676        // Ensure all previously-registered buffers are closed when signing out.
1677        lsp.set_request_handler::<request::SignOut, _, _>(|_, _| async {
1678            Ok(request::SignOutResult {})
1679        });
1680        copilot
1681            .update(cx, |copilot, cx| copilot.sign_out(cx))
1682            .await
1683            .unwrap();
1684        let mut received_close_notifications = vec![
1685            lsp.receive_notification::<lsp::notification::DidCloseTextDocument>()
1686                .await,
1687            lsp.receive_notification::<lsp::notification::DidCloseTextDocument>()
1688                .await,
1689        ];
1690        received_close_notifications
1691            .sort_by_key(|notification| notification.text_document.uri.clone());
1692        assert_eq!(
1693            received_close_notifications,
1694            vec![
1695                lsp::DidCloseTextDocumentParams {
1696                    text_document: lsp::TextDocumentIdentifier::new(buffer_2_uri.clone()),
1697                },
1698                lsp::DidCloseTextDocumentParams {
1699                    text_document: lsp::TextDocumentIdentifier::new(buffer_1_uri.clone()),
1700                },
1701            ],
1702        );
1703
1704        // Ensure all previously-registered buffers are re-opened when signing in.
1705        lsp.set_request_handler::<request::SignIn, _, _>(|_, _| async {
1706            Ok(request::PromptUserDeviceFlow {
1707                user_code: "test-code".into(),
1708                command: lsp::Command {
1709                    title: "Sign in".into(),
1710                    command: "github.copilot.finishDeviceFlow".into(),
1711                    arguments: None,
1712                },
1713            })
1714        });
1715        copilot
1716            .update(cx, |copilot, cx| copilot.sign_in(cx))
1717            .await
1718            .unwrap();
1719
1720        // Simulate auth completion by directly updating sign-in status
1721        copilot.update(cx, |copilot, cx| {
1722            copilot.update_sign_in_status(
1723                request::SignInStatus::Ok {
1724                    user: Some("user-1".into()),
1725                },
1726                cx,
1727            );
1728        });
1729
1730        let mut received_open_notifications = vec![
1731            lsp.receive_notification::<lsp::notification::DidOpenTextDocument>()
1732                .await,
1733            lsp.receive_notification::<lsp::notification::DidOpenTextDocument>()
1734                .await,
1735        ];
1736        received_open_notifications
1737            .sort_by_key(|notification| notification.text_document.uri.clone());
1738        assert_eq!(
1739            received_open_notifications,
1740            vec![
1741                lsp::DidOpenTextDocumentParams {
1742                    text_document: lsp::TextDocumentItem::new(
1743                        buffer_2_uri.clone(),
1744                        "plaintext".into(),
1745                        0,
1746                        "Goodbye".into()
1747                    ),
1748                },
1749                lsp::DidOpenTextDocumentParams {
1750                    text_document: lsp::TextDocumentItem::new(
1751                        buffer_1_uri.clone(),
1752                        "plaintext".into(),
1753                        0,
1754                        "Hello world".into()
1755                    ),
1756                }
1757            ]
1758        );
1759        // Dropping a buffer causes it to be closed on the LSP side as well.
1760        cx.update(|_| drop(buffer_2));
1761        assert_eq!(
1762            lsp.receive_notification::<lsp::notification::DidCloseTextDocument>()
1763                .await,
1764            lsp::DidCloseTextDocumentParams {
1765                text_document: lsp::TextDocumentIdentifier::new(buffer_2_uri),
1766            }
1767        );
1768    }
1769
1770    struct File {
1771        abs_path: PathBuf,
1772        path: Arc<RelPath>,
1773    }
1774
1775    impl language::File for File {
1776        fn as_local(&self) -> Option<&dyn language::LocalFile> {
1777            Some(self)
1778        }
1779
1780        fn disk_state(&self) -> language::DiskState {
1781            language::DiskState::Present {
1782                mtime: ::fs::MTime::from_seconds_and_nanos(100, 42),
1783            }
1784        }
1785
1786        fn path(&self) -> &Arc<RelPath> {
1787            &self.path
1788        }
1789
1790        fn path_style(&self, _: &App) -> PathStyle {
1791            PathStyle::local()
1792        }
1793
1794        fn full_path(&self, _: &App) -> PathBuf {
1795            unimplemented!()
1796        }
1797
1798        fn file_name<'a>(&'a self, _: &'a App) -> &'a str {
1799            unimplemented!()
1800        }
1801
1802        fn to_proto(&self, _: &App) -> rpc::proto::File {
1803            unimplemented!()
1804        }
1805
1806        fn worktree_id(&self, _: &App) -> settings::WorktreeId {
1807            settings::WorktreeId::from_usize(0)
1808        }
1809
1810        fn is_private(&self) -> bool {
1811            false
1812        }
1813    }
1814
1815    impl language::LocalFile for File {
1816        fn abs_path(&self, _: &App) -> PathBuf {
1817            self.abs_path.clone()
1818        }
1819
1820        fn load(&self, _: &App) -> Task<Result<String>> {
1821            unimplemented!()
1822        }
1823
1824        fn load_bytes(&self, _cx: &App) -> Task<Result<Vec<u8>>> {
1825            unimplemented!()
1826        }
1827    }
1828
1829    #[gpui::test]
1830    async fn test_copilot_starts_when_ai_becomes_enabled(cx: &mut TestAppContext) {
1831        cx.update(|cx| {
1832            let store = SettingsStore::test(cx);
1833            cx.set_global(store);
1834            DisableAiSettings::register(cx);
1835            AllLanguageSettings::register(cx);
1836
1837            // AI is initially disabled
1838            DisableAiSettings::override_global(DisableAiSettings { disable_ai: true }, cx);
1839        });
1840
1841        let copilot = cx.new(|cx| Copilot {
1842            server_id: LanguageServerId(0),
1843            fs: FakeFs::new(cx.background_executor().clone()),
1844            node_runtime: NodeRuntime::unavailable(),
1845            server: CopilotServer::Disabled,
1846            buffers: Default::default(),
1847            _subscriptions: vec![],
1848        });
1849
1850        // Verify copilot is disabled initially
1851        copilot.read_with(cx, |copilot, _| {
1852            assert!(
1853                matches!(copilot.server, CopilotServer::Disabled),
1854                "Copilot should be disabled initially"
1855            );
1856        });
1857
1858        // Try to start - should fail because AI is disabled
1859        // Use check_edit_prediction_provider=false to skip provider check
1860        copilot.update(cx, |copilot, cx| {
1861            copilot.start_copilot(false, false, cx);
1862        });
1863
1864        copilot.read_with(cx, |copilot, _| {
1865            assert!(
1866                matches!(copilot.server, CopilotServer::Disabled),
1867                "Copilot should remain disabled when disable_ai is true"
1868            );
1869        });
1870
1871        // Now enable AI
1872        cx.update(|cx| {
1873            DisableAiSettings::override_global(DisableAiSettings { disable_ai: false }, cx);
1874        });
1875
1876        // Try to start again - should work now
1877        copilot.update(cx, |copilot, cx| {
1878            copilot.start_copilot(false, false, cx);
1879        });
1880
1881        copilot.read_with(cx, |copilot, _| {
1882            assert!(
1883                matches!(copilot.server, CopilotServer::Starting { .. }),
1884                "Copilot should be starting after disable_ai is set to false"
1885            );
1886        });
1887    }
1888
1889    fn init_test(cx: &mut TestAppContext) {
1890        zlog::init_test();
1891
1892        cx.update(|cx| {
1893            let settings_store = SettingsStore::test(cx);
1894            cx.set_global(settings_store);
1895        });
1896    }
1897}