1use std::{
2 sync::{Arc, Mutex},
3 time::Duration,
4};
5
6use anyhow::{Context as _, Result};
7use context_server::{ContextServerCommand, ContextServerId};
8use editor::{Editor, EditorElement, EditorStyle};
9use gpui::{
10 Animation, AnimationExt as _, AsyncWindowContext, DismissEvent, Entity, EventEmitter,
11 FocusHandle, Focusable, Task, TextStyle, TextStyleRefinement, Transformation, UnderlineStyle,
12 WeakEntity, percentage, prelude::*,
13};
14use language::{Language, LanguageRegistry};
15use markdown::{Markdown, MarkdownElement, MarkdownStyle};
16use notifications::status_toast::{StatusToast, ToastIcon};
17use project::{
18 context_server_store::{
19 ContextServerStatus, ContextServerStore, registry::ContextServerDescriptorRegistry,
20 },
21 project_settings::{ContextServerSettings, ProjectSettings},
22 worktree_store::WorktreeStore,
23};
24use settings::{Settings as _, update_settings_file};
25use theme::ThemeSettings;
26use ui::{KeyBinding, Modal, ModalFooter, ModalHeader, Section, Tooltip, prelude::*};
27use util::ResultExt as _;
28use workspace::{ModalView, Workspace};
29
30use crate::AddContextServer;
31
32enum ConfigurationTarget {
33 New,
34 Existing {
35 id: ContextServerId,
36 command: ContextServerCommand,
37 },
38 Extension {
39 id: ContextServerId,
40 repository_url: Option<SharedString>,
41 installation: Option<extension::ContextServerConfiguration>,
42 },
43}
44
45enum ConfigurationSource {
46 New {
47 editor: Entity<Editor>,
48 },
49 Existing {
50 editor: Entity<Editor>,
51 },
52 Extension {
53 id: ContextServerId,
54 editor: Option<Entity<Editor>>,
55 repository_url: Option<SharedString>,
56 installation_instructions: Option<Entity<markdown::Markdown>>,
57 settings_validator: Option<jsonschema::Validator>,
58 },
59}
60
61impl ConfigurationSource {
62 fn has_configuration_options(&self) -> bool {
63 !matches!(self, ConfigurationSource::Extension { editor: None, .. })
64 }
65
66 fn is_new(&self) -> bool {
67 matches!(self, ConfigurationSource::New { .. })
68 }
69
70 fn from_target(
71 target: ConfigurationTarget,
72 language_registry: Arc<LanguageRegistry>,
73 jsonc_language: Option<Arc<Language>>,
74 window: &mut Window,
75 cx: &mut App,
76 ) -> Self {
77 fn create_editor(
78 json: String,
79 jsonc_language: Option<Arc<Language>>,
80 window: &mut Window,
81 cx: &mut App,
82 ) -> Entity<Editor> {
83 cx.new(|cx| {
84 let mut editor = Editor::auto_height(4, 16, window, cx);
85 editor.set_text(json, window, cx);
86 editor.set_show_gutter(false, cx);
87 editor.set_soft_wrap_mode(language::language_settings::SoftWrap::None, cx);
88 if let Some(buffer) = editor.buffer().read(cx).as_singleton() {
89 buffer.update(cx, |buffer, cx| buffer.set_language(jsonc_language, cx))
90 }
91 editor
92 })
93 }
94
95 match target {
96 ConfigurationTarget::New => ConfigurationSource::New {
97 editor: create_editor(context_server_input(None), jsonc_language, window, cx),
98 },
99 ConfigurationTarget::Existing { id, command } => ConfigurationSource::Existing {
100 editor: create_editor(
101 context_server_input(Some((id, command))),
102 jsonc_language,
103 window,
104 cx,
105 ),
106 },
107 ConfigurationTarget::Extension {
108 id,
109 repository_url,
110 installation,
111 } => {
112 let settings_validator = installation.as_ref().and_then(|installation| {
113 jsonschema::validator_for(&installation.settings_schema)
114 .context("Failed to load JSON schema for context server settings")
115 .log_err()
116 });
117 let installation_instructions = installation.as_ref().map(|installation| {
118 cx.new(|cx| {
119 Markdown::new(
120 installation.installation_instructions.clone().into(),
121 Some(language_registry.clone()),
122 None,
123 cx,
124 )
125 })
126 });
127 ConfigurationSource::Extension {
128 id,
129 repository_url,
130 installation_instructions,
131 settings_validator,
132 editor: installation.map(|installation| {
133 create_editor(installation.default_settings, jsonc_language, window, cx)
134 }),
135 }
136 }
137 }
138 }
139
140 fn output(&self, cx: &mut App) -> Result<(ContextServerId, ContextServerSettings)> {
141 match self {
142 ConfigurationSource::New { editor } | ConfigurationSource::Existing { editor } => {
143 parse_input(&editor.read(cx).text(cx)).map(|(id, command)| {
144 (
145 id,
146 ContextServerSettings::Custom {
147 enabled: true,
148 command,
149 },
150 )
151 })
152 }
153 ConfigurationSource::Extension {
154 id,
155 editor,
156 settings_validator,
157 ..
158 } => {
159 let text = editor
160 .as_ref()
161 .context("No output available")?
162 .read(cx)
163 .text(cx);
164 let settings = serde_json_lenient::from_str::<serde_json::Value>(&text)?;
165 if let Some(settings_validator) = settings_validator {
166 if let Err(error) = settings_validator.validate(&settings) {
167 return Err(anyhow::anyhow!(error.to_string()));
168 }
169 }
170 Ok((
171 id.clone(),
172 ContextServerSettings::Extension {
173 enabled: true,
174 settings,
175 },
176 ))
177 }
178 }
179 }
180}
181
182fn context_server_input(existing: Option<(ContextServerId, ContextServerCommand)>) -> String {
183 let (name, path, args, env) = match existing {
184 Some((id, cmd)) => {
185 let args = serde_json::to_string(&cmd.args).unwrap();
186 let env = serde_json::to_string(&cmd.env.unwrap_or_default()).unwrap();
187 (id.0.to_string(), cmd.path, args, env)
188 }
189 None => (
190 "some-mcp-server".to_string(),
191 "".to_string(),
192 "[]".to_string(),
193 "{}".to_string(),
194 ),
195 };
196
197 format!(
198 r#"{{
199 /// The name of your MCP server
200 "{name}": {{
201 "command": {{
202 /// The path to the executable
203 "path": "{path}",
204 /// The arguments to pass to the executable
205 "args": {args},
206 /// The environment variables to set for the executable
207 "env": {env}
208 }}
209 }}
210}}"#
211 )
212}
213
214fn resolve_context_server_extension(
215 id: ContextServerId,
216 worktree_store: Entity<WorktreeStore>,
217 cx: &mut App,
218) -> Task<Option<ConfigurationTarget>> {
219 let registry = ContextServerDescriptorRegistry::default_global(cx).read(cx);
220
221 let Some(descriptor) = registry.context_server_descriptor(&id.0) else {
222 return Task::ready(None);
223 };
224
225 let extension = crate::agent_configuration::resolve_extension_for_context_server(&id, cx);
226 cx.spawn(async move |cx| {
227 let installation = descriptor
228 .configuration(worktree_store, cx)
229 .await
230 .context("Failed to resolve context server configuration")
231 .log_err()
232 .flatten();
233
234 Some(ConfigurationTarget::Extension {
235 id,
236 repository_url: extension
237 .and_then(|(_, manifest)| manifest.repository.clone().map(SharedString::from)),
238 installation,
239 })
240 })
241}
242
243enum State {
244 Idle,
245 Waiting,
246 Error(SharedString),
247}
248
249pub struct ConfigureContextServerModal {
250 context_server_store: Entity<ContextServerStore>,
251 workspace: WeakEntity<Workspace>,
252 source: ConfigurationSource,
253 state: State,
254}
255
256impl ConfigureContextServerModal {
257 pub fn register(
258 workspace: &mut Workspace,
259 language_registry: Arc<LanguageRegistry>,
260 _window: Option<&mut Window>,
261 _cx: &mut Context<Workspace>,
262 ) {
263 workspace.register_action({
264 let language_registry = language_registry.clone();
265 move |_workspace, _: &AddContextServer, window, cx| {
266 let workspace_handle = cx.weak_entity();
267 let language_registry = language_registry.clone();
268 window
269 .spawn(cx, async move |cx| {
270 Self::show_modal(
271 ConfigurationTarget::New,
272 language_registry,
273 workspace_handle,
274 cx,
275 )
276 .await
277 })
278 .detach_and_log_err(cx);
279 }
280 });
281 }
282
283 pub fn show_modal_for_existing_server(
284 server_id: ContextServerId,
285 language_registry: Arc<LanguageRegistry>,
286 workspace: WeakEntity<Workspace>,
287 window: &mut Window,
288 cx: &mut App,
289 ) -> Task<Result<()>> {
290 let Some(settings) = ProjectSettings::get_global(cx)
291 .context_servers
292 .get(&server_id.0)
293 .cloned()
294 .or_else(|| {
295 ContextServerDescriptorRegistry::default_global(cx)
296 .read(cx)
297 .context_server_descriptor(&server_id.0)
298 .map(|_| ContextServerSettings::Extension {
299 enabled: true,
300 settings: serde_json::json!({}),
301 })
302 })
303 else {
304 return Task::ready(Err(anyhow::anyhow!("Context server not found")));
305 };
306
307 window.spawn(cx, async move |cx| {
308 let target = match settings {
309 ContextServerSettings::Custom {
310 enabled: _,
311 command,
312 } => Some(ConfigurationTarget::Existing {
313 id: server_id,
314 command,
315 }),
316 ContextServerSettings::Extension { .. } => {
317 match workspace
318 .update(cx, |workspace, cx| {
319 resolve_context_server_extension(
320 server_id,
321 workspace.project().read(cx).worktree_store(),
322 cx,
323 )
324 })
325 .ok()
326 {
327 Some(task) => task.await,
328 None => None,
329 }
330 }
331 };
332
333 match target {
334 Some(target) => Self::show_modal(target, language_registry, workspace, cx).await,
335 None => Err(anyhow::anyhow!("Failed to resolve context server")),
336 }
337 })
338 }
339
340 fn show_modal(
341 target: ConfigurationTarget,
342 language_registry: Arc<LanguageRegistry>,
343 workspace: WeakEntity<Workspace>,
344 cx: &mut AsyncWindowContext,
345 ) -> Task<Result<()>> {
346 cx.spawn(async move |cx| {
347 let jsonc_language = language_registry.language_for_name("jsonc").await.ok();
348 workspace.update_in(cx, |workspace, window, cx| {
349 let workspace_handle = cx.weak_entity();
350 let context_server_store = workspace.project().read(cx).context_server_store();
351 workspace.toggle_modal(window, cx, |window, cx| Self {
352 context_server_store,
353 workspace: workspace_handle,
354 state: State::Idle,
355 source: ConfigurationSource::from_target(
356 target,
357 language_registry,
358 jsonc_language,
359 window,
360 cx,
361 ),
362 })
363 })
364 })
365 }
366
367 fn set_error(&mut self, err: impl Into<SharedString>, cx: &mut Context<Self>) {
368 self.state = State::Error(err.into());
369 cx.notify();
370 }
371
372 fn confirm(&mut self, _: &menu::Confirm, cx: &mut Context<Self>) {
373 self.state = State::Idle;
374 let Some(workspace) = self.workspace.upgrade() else {
375 return;
376 };
377
378 let (id, settings) = match self.source.output(cx) {
379 Ok(val) => val,
380 Err(error) => {
381 self.set_error(error.to_string(), cx);
382 return;
383 }
384 };
385
386 self.state = State::Waiting;
387 let wait_for_context_server_task =
388 wait_for_context_server(&self.context_server_store, id.clone(), cx);
389 cx.spawn({
390 let id = id.clone();
391 async move |this, cx| {
392 let result = wait_for_context_server_task.await;
393 this.update(cx, |this, cx| match result {
394 Ok(_) => {
395 this.state = State::Idle;
396 this.show_configured_context_server_toast(id, cx);
397 cx.emit(DismissEvent);
398 }
399 Err(err) => {
400 this.set_error(err, cx);
401 }
402 })
403 }
404 })
405 .detach();
406
407 // When we write the settings to the file, the context server will be restarted.
408 workspace.update(cx, |workspace, cx| {
409 let fs = workspace.app_state().fs.clone();
410 update_settings_file::<ProjectSettings>(fs.clone(), cx, |project_settings, _| {
411 project_settings.context_servers.insert(id.0, settings);
412 });
413 });
414 }
415
416 fn cancel(&mut self, _: &menu::Cancel, cx: &mut Context<Self>) {
417 cx.emit(DismissEvent);
418 }
419
420 fn show_configured_context_server_toast(&self, id: ContextServerId, cx: &mut App) {
421 self.workspace
422 .update(cx, {
423 |workspace, cx| {
424 let status_toast = StatusToast::new(
425 format!("{} configured successfully.", id.0),
426 cx,
427 |this, _cx| {
428 this.icon(ToastIcon::new(IconName::Hammer).color(Color::Muted))
429 .action("Dismiss", |_, _| {})
430 },
431 );
432
433 workspace.toggle_status_toast(status_toast, cx);
434 }
435 })
436 .log_err();
437 }
438}
439
440fn parse_input(text: &str) -> Result<(ContextServerId, ContextServerCommand)> {
441 let value: serde_json::Value = serde_json_lenient::from_str(text)?;
442 let object = value.as_object().context("Expected object")?;
443 anyhow::ensure!(object.len() == 1, "Expected exactly one key-value pair");
444 let (context_server_name, value) = object.into_iter().next().unwrap();
445 let command = value.get("command").context("Expected command")?;
446 let command: ContextServerCommand = serde_json::from_value(command.clone())?;
447 Ok((ContextServerId(context_server_name.clone().into()), command))
448}
449
450impl ModalView for ConfigureContextServerModal {}
451
452impl Focusable for ConfigureContextServerModal {
453 fn focus_handle(&self, cx: &App) -> FocusHandle {
454 match &self.source {
455 ConfigurationSource::New { editor } => editor.focus_handle(cx),
456 ConfigurationSource::Existing { editor, .. } => editor.focus_handle(cx),
457 ConfigurationSource::Extension { editor, .. } => editor
458 .as_ref()
459 .map(|editor| editor.focus_handle(cx))
460 .unwrap_or_else(|| cx.focus_handle()),
461 }
462 }
463}
464
465impl EventEmitter<DismissEvent> for ConfigureContextServerModal {}
466
467impl ConfigureContextServerModal {
468 fn render_modal_header(&self) -> ModalHeader {
469 let text: SharedString = match &self.source {
470 ConfigurationSource::New { .. } => "Add MCP Server".into(),
471 ConfigurationSource::Existing { .. } => "Configure MCP Server".into(),
472 ConfigurationSource::Extension { id, .. } => format!("Configure {}", id.0).into(),
473 };
474 ModalHeader::new().headline(text)
475 }
476
477 fn render_modal_description(&self, window: &mut Window, cx: &mut Context<Self>) -> AnyElement {
478 const MODAL_DESCRIPTION: &'static str = "Visit the MCP server configuration docs to find all necessary arguments and environment variables.";
479
480 if let ConfigurationSource::Extension {
481 installation_instructions: Some(installation_instructions),
482 ..
483 } = &self.source
484 {
485 div()
486 .pb_2()
487 .text_sm()
488 .child(MarkdownElement::new(
489 installation_instructions.clone(),
490 default_markdown_style(window, cx),
491 ))
492 .into_any_element()
493 } else {
494 Label::new(MODAL_DESCRIPTION)
495 .color(Color::Muted)
496 .into_any_element()
497 }
498 }
499
500 fn render_modal_content(&self, cx: &App) -> AnyElement {
501 let editor = match &self.source {
502 ConfigurationSource::New { editor } => editor,
503 ConfigurationSource::Existing { editor } => editor,
504 ConfigurationSource::Extension { editor, .. } => {
505 let Some(editor) = editor else {
506 return div().into_any_element();
507 };
508 editor
509 }
510 };
511
512 div()
513 .p_2()
514 .rounded_md()
515 .border_1()
516 .border_color(cx.theme().colors().border_variant)
517 .bg(cx.theme().colors().editor_background)
518 .child({
519 let settings = ThemeSettings::get_global(cx);
520 let text_style = TextStyle {
521 color: cx.theme().colors().text,
522 font_family: settings.buffer_font.family.clone(),
523 font_fallbacks: settings.buffer_font.fallbacks.clone(),
524 font_size: settings.buffer_font_size(cx).into(),
525 font_weight: settings.buffer_font.weight,
526 line_height: relative(settings.buffer_line_height.value()),
527 ..Default::default()
528 };
529 EditorElement::new(
530 editor,
531 EditorStyle {
532 background: cx.theme().colors().editor_background,
533 local_player: cx.theme().players().local(),
534 text: text_style,
535 syntax: cx.theme().syntax().clone(),
536 ..Default::default()
537 },
538 )
539 })
540 .into_any_element()
541 }
542
543 fn render_modal_footer(&self, window: &mut Window, cx: &mut Context<Self>) -> ModalFooter {
544 let focus_handle = self.focus_handle(cx);
545 let is_connecting = matches!(self.state, State::Waiting);
546
547 ModalFooter::new()
548 .start_slot::<Button>(
549 if let ConfigurationSource::Extension {
550 repository_url: Some(repository_url),
551 ..
552 } = &self.source
553 {
554 Some(
555 Button::new("open-repository", "Open Repository")
556 .icon(IconName::ArrowUpRight)
557 .icon_color(Color::Muted)
558 .icon_size(IconSize::XSmall)
559 .tooltip({
560 let repository_url = repository_url.clone();
561 move |window, cx| {
562 Tooltip::with_meta(
563 "Open Repository",
564 None,
565 repository_url.clone(),
566 window,
567 cx,
568 )
569 }
570 })
571 .on_click({
572 let repository_url = repository_url.clone();
573 move |_, _, cx| cx.open_url(&repository_url)
574 }),
575 )
576 } else {
577 None
578 },
579 )
580 .end_slot(
581 h_flex()
582 .gap_2()
583 .child(
584 Button::new(
585 "cancel",
586 if self.source.has_configuration_options() {
587 "Cancel"
588 } else {
589 "Dismiss"
590 },
591 )
592 .key_binding(
593 KeyBinding::for_action_in(&menu::Cancel, &focus_handle, window, cx)
594 .map(|kb| kb.size(rems_from_px(12.))),
595 )
596 .on_click(
597 cx.listener(|this, _event, _window, cx| this.cancel(&menu::Cancel, cx)),
598 ),
599 )
600 .children(self.source.has_configuration_options().then(|| {
601 Button::new(
602 "add-server",
603 if self.source.is_new() {
604 "Add Server"
605 } else {
606 "Configure Server"
607 },
608 )
609 .disabled(is_connecting)
610 .key_binding(
611 KeyBinding::for_action_in(&menu::Confirm, &focus_handle, window, cx)
612 .map(|kb| kb.size(rems_from_px(12.))),
613 )
614 .on_click(
615 cx.listener(|this, _event, _window, cx| {
616 this.confirm(&menu::Confirm, cx)
617 }),
618 )
619 })),
620 )
621 }
622
623 fn render_waiting_for_context_server() -> Div {
624 h_flex()
625 .gap_2()
626 .child(
627 Icon::new(IconName::ArrowCircle)
628 .size(IconSize::XSmall)
629 .color(Color::Info)
630 .with_animation(
631 "arrow-circle",
632 Animation::new(Duration::from_secs(2)).repeat(),
633 |icon, delta| icon.transform(Transformation::rotate(percentage(delta))),
634 )
635 .into_any_element(),
636 )
637 .child(
638 Label::new("Waiting for Context Server")
639 .size(LabelSize::Small)
640 .color(Color::Muted),
641 )
642 }
643
644 fn render_modal_error(error: SharedString) -> Div {
645 h_flex()
646 .gap_2()
647 .child(
648 Icon::new(IconName::Warning)
649 .size(IconSize::XSmall)
650 .color(Color::Warning),
651 )
652 .child(
653 div()
654 .w_full()
655 .child(Label::new(error).size(LabelSize::Small).color(Color::Muted)),
656 )
657 }
658}
659
660impl Render for ConfigureContextServerModal {
661 fn render(&mut self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
662 div()
663 .elevation_3(cx)
664 .w(rems(34.))
665 .key_context("ConfigureContextServerModal")
666 .on_action(
667 cx.listener(|this, _: &menu::Cancel, _window, cx| this.cancel(&menu::Cancel, cx)),
668 )
669 .on_action(
670 cx.listener(|this, _: &menu::Confirm, _window, cx| {
671 this.confirm(&menu::Confirm, cx)
672 }),
673 )
674 .capture_any_mouse_down(cx.listener(|this, _, window, cx| {
675 this.focus_handle(cx).focus(window);
676 }))
677 .child(
678 Modal::new("configure-context-server", None)
679 .header(self.render_modal_header())
680 .section(
681 Section::new()
682 .child(self.render_modal_description(window, cx))
683 .child(self.render_modal_content(cx))
684 .child(match &self.state {
685 State::Idle => div(),
686 State::Waiting => Self::render_waiting_for_context_server(),
687 State::Error(error) => Self::render_modal_error(error.clone()),
688 }),
689 )
690 .footer(self.render_modal_footer(window, cx)),
691 )
692 }
693}
694
695fn wait_for_context_server(
696 context_server_store: &Entity<ContextServerStore>,
697 context_server_id: ContextServerId,
698 cx: &mut App,
699) -> Task<Result<(), Arc<str>>> {
700 let (tx, rx) = futures::channel::oneshot::channel();
701 let tx = Arc::new(Mutex::new(Some(tx)));
702
703 let subscription = cx.subscribe(context_server_store, move |_, event, _cx| match event {
704 project::context_server_store::Event::ServerStatusChanged { server_id, status } => {
705 match status {
706 ContextServerStatus::Running => {
707 if server_id == &context_server_id {
708 if let Some(tx) = tx.lock().unwrap().take() {
709 let _ = tx.send(Ok(()));
710 }
711 }
712 }
713 ContextServerStatus::Stopped => {
714 if server_id == &context_server_id {
715 if let Some(tx) = tx.lock().unwrap().take() {
716 let _ = tx.send(Err("Context server stopped running".into()));
717 }
718 }
719 }
720 ContextServerStatus::Error(error) => {
721 if server_id == &context_server_id {
722 if let Some(tx) = tx.lock().unwrap().take() {
723 let _ = tx.send(Err(error.clone()));
724 }
725 }
726 }
727 _ => {}
728 }
729 }
730 });
731
732 cx.spawn(async move |_cx| {
733 let result = rx.await.unwrap();
734 drop(subscription);
735 result
736 })
737}
738
739pub(crate) fn default_markdown_style(window: &Window, cx: &App) -> MarkdownStyle {
740 let theme_settings = ThemeSettings::get_global(cx);
741 let colors = cx.theme().colors();
742 let mut text_style = window.text_style();
743 text_style.refine(&TextStyleRefinement {
744 font_family: Some(theme_settings.ui_font.family.clone()),
745 font_fallbacks: theme_settings.ui_font.fallbacks.clone(),
746 font_features: Some(theme_settings.ui_font.features.clone()),
747 font_size: Some(TextSize::XSmall.rems(cx).into()),
748 color: Some(colors.text_muted),
749 ..Default::default()
750 });
751
752 MarkdownStyle {
753 base_text_style: text_style.clone(),
754 selection_background_color: cx.theme().players().local().selection,
755 link: TextStyleRefinement {
756 background_color: Some(colors.editor_foreground.opacity(0.025)),
757 underline: Some(UnderlineStyle {
758 color: Some(colors.text_accent.opacity(0.5)),
759 thickness: px(1.),
760 ..Default::default()
761 }),
762 ..Default::default()
763 },
764 ..Default::default()
765 }
766}