open_router.rs

  1use anyhow::{Context as _, Result, anyhow};
  2use collections::HashMap;
  3use credentials_provider::CredentialsProvider;
  4use editor::{Editor, EditorElement, EditorStyle};
  5use futures::{FutureExt, Stream, StreamExt, future::BoxFuture};
  6use gpui::{
  7    AnyView, App, AsyncApp, Context, Entity, FontStyle, Subscription, Task, TextStyle, WhiteSpace,
  8};
  9use http_client::HttpClient;
 10use language_model::{
 11    AuthenticateError, LanguageModel, LanguageModelCompletionError, LanguageModelCompletionEvent,
 12    LanguageModelId, LanguageModelName, LanguageModelProvider, LanguageModelProviderId,
 13    LanguageModelProviderName, LanguageModelProviderState, LanguageModelRequest,
 14    LanguageModelToolChoice, LanguageModelToolResultContent, LanguageModelToolUse, MessageContent,
 15    RateLimiter, Role, StopReason, TokenUsage,
 16};
 17use open_router::{Model, ResponseStreamEvent, list_models, stream_completion};
 18use schemars::JsonSchema;
 19use serde::{Deserialize, Serialize};
 20use settings::{Settings, SettingsStore};
 21use std::pin::Pin;
 22use std::str::FromStr as _;
 23use std::sync::Arc;
 24use theme::ThemeSettings;
 25use ui::{Icon, IconName, List, Tooltip, prelude::*};
 26use util::ResultExt;
 27
 28use crate::{AllLanguageModelSettings, ui::InstructionListItem};
 29
 30const PROVIDER_ID: &str = "openrouter";
 31const PROVIDER_NAME: &str = "OpenRouter";
 32
 33#[derive(Default, Clone, Debug, PartialEq)]
 34pub struct OpenRouterSettings {
 35    pub api_url: String,
 36    pub available_models: Vec<AvailableModel>,
 37}
 38
 39#[derive(Clone, Debug, PartialEq, Serialize, Deserialize, JsonSchema)]
 40pub struct AvailableModel {
 41    pub name: String,
 42    pub display_name: Option<String>,
 43    pub max_tokens: u64,
 44    pub max_output_tokens: Option<u64>,
 45    pub max_completion_tokens: Option<u64>,
 46    pub supports_tools: Option<bool>,
 47    pub supports_images: Option<bool>,
 48}
 49
 50pub struct OpenRouterLanguageModelProvider {
 51    http_client: Arc<dyn HttpClient>,
 52    state: gpui::Entity<State>,
 53}
 54
 55pub struct State {
 56    api_key: Option<String>,
 57    api_key_from_env: bool,
 58    http_client: Arc<dyn HttpClient>,
 59    available_models: Vec<open_router::Model>,
 60    fetch_models_task: Option<Task<Result<()>>>,
 61    _subscription: Subscription,
 62}
 63
 64const OPENROUTER_API_KEY_VAR: &str = "OPENROUTER_API_KEY";
 65
 66impl State {
 67    fn is_authenticated(&self) -> bool {
 68        self.api_key.is_some()
 69    }
 70
 71    fn reset_api_key(&self, cx: &mut Context<Self>) -> Task<Result<()>> {
 72        let credentials_provider = <dyn CredentialsProvider>::global(cx);
 73        let api_url = AllLanguageModelSettings::get_global(cx)
 74            .open_router
 75            .api_url
 76            .clone();
 77        cx.spawn(async move |this, cx| {
 78            credentials_provider
 79                .delete_credentials(&api_url, &cx)
 80                .await
 81                .log_err();
 82            this.update(cx, |this, cx| {
 83                this.api_key = None;
 84                this.api_key_from_env = false;
 85                cx.notify();
 86            })
 87        })
 88    }
 89
 90    fn set_api_key(&mut self, api_key: String, cx: &mut Context<Self>) -> Task<Result<()>> {
 91        let credentials_provider = <dyn CredentialsProvider>::global(cx);
 92        let api_url = AllLanguageModelSettings::get_global(cx)
 93            .open_router
 94            .api_url
 95            .clone();
 96        cx.spawn(async move |this, cx| {
 97            credentials_provider
 98                .write_credentials(&api_url, "Bearer", api_key.as_bytes(), &cx)
 99                .await
100                .log_err();
101            this.update(cx, |this, cx| {
102                this.api_key = Some(api_key);
103                cx.notify();
104            })
105        })
106    }
107
108    fn authenticate(&self, cx: &mut Context<Self>) -> Task<Result<(), AuthenticateError>> {
109        if self.is_authenticated() {
110            return Task::ready(Ok(()));
111        }
112
113        let credentials_provider = <dyn CredentialsProvider>::global(cx);
114        let api_url = AllLanguageModelSettings::get_global(cx)
115            .open_router
116            .api_url
117            .clone();
118        cx.spawn(async move |this, cx| {
119            let (api_key, from_env) = if let Ok(api_key) = std::env::var(OPENROUTER_API_KEY_VAR) {
120                (api_key, true)
121            } else {
122                let (_, api_key) = credentials_provider
123                    .read_credentials(&api_url, &cx)
124                    .await?
125                    .ok_or(AuthenticateError::CredentialsNotFound)?;
126                (
127                    String::from_utf8(api_key)
128                        .context(format!("invalid {} API key", PROVIDER_NAME))?,
129                    false,
130                )
131            };
132            this.update(cx, |this, cx| {
133                this.api_key = Some(api_key);
134                this.api_key_from_env = from_env;
135                cx.notify();
136            })?;
137
138            Ok(())
139        })
140    }
141
142    fn fetch_models(&mut self, cx: &mut Context<Self>) -> Task<Result<()>> {
143        let settings = &AllLanguageModelSettings::get_global(cx).open_router;
144        let http_client = self.http_client.clone();
145        let api_url = settings.api_url.clone();
146
147        cx.spawn(async move |this, cx| {
148            let models = list_models(http_client.as_ref(), &api_url).await?;
149
150            this.update(cx, |this, cx| {
151                this.available_models = models;
152                cx.notify();
153            })
154        })
155    }
156
157    fn restart_fetch_models_task(&mut self, cx: &mut Context<Self>) {
158        let task = self.fetch_models(cx);
159        self.fetch_models_task.replace(task);
160    }
161}
162
163impl OpenRouterLanguageModelProvider {
164    pub fn new(http_client: Arc<dyn HttpClient>, cx: &mut App) -> Self {
165        let state = cx.new(|cx| State {
166            api_key: None,
167            api_key_from_env: false,
168            http_client: http_client.clone(),
169            available_models: Vec::new(),
170            fetch_models_task: None,
171            _subscription: cx.observe_global::<SettingsStore>(|this: &mut State, cx| {
172                this.restart_fetch_models_task(cx);
173                cx.notify();
174            }),
175        });
176
177        Self { http_client, state }
178    }
179
180    fn create_language_model(&self, model: open_router::Model) -> Arc<dyn LanguageModel> {
181        Arc::new(OpenRouterLanguageModel {
182            id: LanguageModelId::from(model.id().to_string()),
183            model,
184            state: self.state.clone(),
185            http_client: self.http_client.clone(),
186            request_limiter: RateLimiter::new(4),
187        })
188    }
189}
190
191impl LanguageModelProviderState for OpenRouterLanguageModelProvider {
192    type ObservableEntity = State;
193
194    fn observable_entity(&self) -> Option<gpui::Entity<Self::ObservableEntity>> {
195        Some(self.state.clone())
196    }
197}
198
199impl LanguageModelProvider for OpenRouterLanguageModelProvider {
200    fn id(&self) -> LanguageModelProviderId {
201        LanguageModelProviderId(PROVIDER_ID.into())
202    }
203
204    fn name(&self) -> LanguageModelProviderName {
205        LanguageModelProviderName(PROVIDER_NAME.into())
206    }
207
208    fn icon(&self) -> IconName {
209        IconName::AiOpenRouter
210    }
211
212    fn default_model(&self, _cx: &App) -> Option<Arc<dyn LanguageModel>> {
213        Some(self.create_language_model(open_router::Model::default()))
214    }
215
216    fn default_fast_model(&self, _cx: &App) -> Option<Arc<dyn LanguageModel>> {
217        Some(self.create_language_model(open_router::Model::default_fast()))
218    }
219
220    fn provided_models(&self, cx: &App) -> Vec<Arc<dyn LanguageModel>> {
221        let mut models_from_api = self.state.read(cx).available_models.clone();
222        let mut settings_models = Vec::new();
223
224        for model in &AllLanguageModelSettings::get_global(cx)
225            .open_router
226            .available_models
227        {
228            settings_models.push(open_router::Model {
229                name: model.name.clone(),
230                display_name: model.display_name.clone(),
231                max_tokens: model.max_tokens,
232                supports_tools: model.supports_tools,
233                supports_images: model.supports_images,
234            });
235        }
236
237        for settings_model in &settings_models {
238            if let Some(pos) = models_from_api
239                .iter()
240                .position(|m| m.name == settings_model.name)
241            {
242                models_from_api[pos] = settings_model.clone();
243            } else {
244                models_from_api.push(settings_model.clone());
245            }
246        }
247
248        models_from_api
249            .into_iter()
250            .map(|model| self.create_language_model(model))
251            .collect()
252    }
253
254    fn is_authenticated(&self, cx: &App) -> bool {
255        self.state.read(cx).is_authenticated()
256    }
257
258    fn authenticate(&self, cx: &mut App) -> Task<Result<(), AuthenticateError>> {
259        self.state.update(cx, |state, cx| state.authenticate(cx))
260    }
261
262    fn configuration_view(&self, window: &mut Window, cx: &mut App) -> AnyView {
263        cx.new(|cx| ConfigurationView::new(self.state.clone(), window, cx))
264            .into()
265    }
266
267    fn reset_credentials(&self, cx: &mut App) -> Task<Result<()>> {
268        self.state.update(cx, |state, cx| state.reset_api_key(cx))
269    }
270}
271
272pub struct OpenRouterLanguageModel {
273    id: LanguageModelId,
274    model: open_router::Model,
275    state: gpui::Entity<State>,
276    http_client: Arc<dyn HttpClient>,
277    request_limiter: RateLimiter,
278}
279
280impl OpenRouterLanguageModel {
281    fn stream_completion(
282        &self,
283        request: open_router::Request,
284        cx: &AsyncApp,
285    ) -> BoxFuture<'static, Result<futures::stream::BoxStream<'static, Result<ResponseStreamEvent>>>>
286    {
287        let http_client = self.http_client.clone();
288        let Ok((api_key, api_url)) = cx.read_entity(&self.state, |state, cx| {
289            let settings = &AllLanguageModelSettings::get_global(cx).open_router;
290            (state.api_key.clone(), settings.api_url.clone())
291        }) else {
292            return futures::future::ready(Err(anyhow!(
293                "App state dropped: Unable to read API key or API URL from the application state"
294            )))
295            .boxed();
296        };
297
298        let future = self.request_limiter.stream(async move {
299            let api_key = api_key.ok_or_else(|| anyhow!("Missing OpenRouter API Key"))?;
300            let request = stream_completion(http_client.as_ref(), &api_url, &api_key, request);
301            let response = request.await?;
302            Ok(response)
303        });
304
305        async move { Ok(future.await?.boxed()) }.boxed()
306    }
307}
308
309impl LanguageModel for OpenRouterLanguageModel {
310    fn id(&self) -> LanguageModelId {
311        self.id.clone()
312    }
313
314    fn name(&self) -> LanguageModelName {
315        LanguageModelName::from(self.model.display_name().to_string())
316    }
317
318    fn provider_id(&self) -> LanguageModelProviderId {
319        LanguageModelProviderId(PROVIDER_ID.into())
320    }
321
322    fn provider_name(&self) -> LanguageModelProviderName {
323        LanguageModelProviderName(PROVIDER_NAME.into())
324    }
325
326    fn supports_tools(&self) -> bool {
327        self.model.supports_tool_calls()
328    }
329
330    fn telemetry_id(&self) -> String {
331        format!("openrouter/{}", self.model.id())
332    }
333
334    fn max_token_count(&self) -> u64 {
335        self.model.max_token_count()
336    }
337
338    fn max_output_tokens(&self) -> Option<u64> {
339        self.model.max_output_tokens()
340    }
341
342    fn supports_tool_choice(&self, choice: LanguageModelToolChoice) -> bool {
343        match choice {
344            LanguageModelToolChoice::Auto => true,
345            LanguageModelToolChoice::Any => true,
346            LanguageModelToolChoice::None => true,
347        }
348    }
349
350    fn supports_images(&self) -> bool {
351        self.model.supports_images.unwrap_or(false)
352    }
353
354    fn count_tokens(
355        &self,
356        request: LanguageModelRequest,
357        cx: &App,
358    ) -> BoxFuture<'static, Result<u64>> {
359        count_open_router_tokens(request, self.model.clone(), cx)
360    }
361
362    fn stream_completion(
363        &self,
364        request: LanguageModelRequest,
365        cx: &AsyncApp,
366    ) -> BoxFuture<
367        'static,
368        Result<
369            futures::stream::BoxStream<
370                'static,
371                Result<LanguageModelCompletionEvent, LanguageModelCompletionError>,
372            >,
373            LanguageModelCompletionError,
374        >,
375    > {
376        let request = into_open_router(request, &self.model, self.max_output_tokens());
377        let completions = self.stream_completion(request, cx);
378        async move {
379            let mapper = OpenRouterEventMapper::new();
380            Ok(mapper.map_stream(completions.await?).boxed())
381        }
382        .boxed()
383    }
384}
385
386pub fn into_open_router(
387    request: LanguageModelRequest,
388    model: &Model,
389    max_output_tokens: Option<u64>,
390) -> open_router::Request {
391    let mut messages = Vec::new();
392    for message in request.messages {
393        for content in message.content {
394            match content {
395                MessageContent::Text(text) | MessageContent::Thinking { text, .. } => {
396                    add_message_content_part(
397                        open_router::MessagePart::Text { text: text },
398                        message.role,
399                        &mut messages,
400                    )
401                }
402                MessageContent::RedactedThinking(_) => {}
403                MessageContent::Image(image) => {
404                    add_message_content_part(
405                        open_router::MessagePart::Image {
406                            image_url: image.to_base64_url(),
407                        },
408                        message.role,
409                        &mut messages,
410                    );
411                }
412                MessageContent::ToolUse(tool_use) => {
413                    let tool_call = open_router::ToolCall {
414                        id: tool_use.id.to_string(),
415                        content: open_router::ToolCallContent::Function {
416                            function: open_router::FunctionContent {
417                                name: tool_use.name.to_string(),
418                                arguments: serde_json::to_string(&tool_use.input)
419                                    .unwrap_or_default(),
420                            },
421                        },
422                    };
423
424                    if let Some(open_router::RequestMessage::Assistant { tool_calls, .. }) =
425                        messages.last_mut()
426                    {
427                        tool_calls.push(tool_call);
428                    } else {
429                        messages.push(open_router::RequestMessage::Assistant {
430                            content: None,
431                            tool_calls: vec![tool_call],
432                        });
433                    }
434                }
435                MessageContent::ToolResult(tool_result) => {
436                    let content = match &tool_result.content {
437                        LanguageModelToolResultContent::Text(text) => {
438                            vec![open_router::MessagePart::Text {
439                                text: text.to_string(),
440                            }]
441                        }
442                        LanguageModelToolResultContent::Image(image) => {
443                            vec![open_router::MessagePart::Image {
444                                image_url: image.to_base64_url(),
445                            }]
446                        }
447                    };
448
449                    messages.push(open_router::RequestMessage::Tool {
450                        content: content.into(),
451                        tool_call_id: tool_result.tool_use_id.to_string(),
452                    });
453                }
454            }
455        }
456    }
457
458    open_router::Request {
459        model: model.id().into(),
460        messages,
461        stream: true,
462        stop: request.stop,
463        temperature: request.temperature.unwrap_or(0.4),
464        max_tokens: max_output_tokens,
465        parallel_tool_calls: if model.supports_parallel_tool_calls() && !request.tools.is_empty() {
466            Some(false)
467        } else {
468            None
469        },
470        usage: open_router::RequestUsage { include: true },
471        tools: request
472            .tools
473            .into_iter()
474            .map(|tool| open_router::ToolDefinition::Function {
475                function: open_router::FunctionDefinition {
476                    name: tool.name,
477                    description: Some(tool.description),
478                    parameters: Some(tool.input_schema),
479                },
480            })
481            .collect(),
482        tool_choice: request.tool_choice.map(|choice| match choice {
483            LanguageModelToolChoice::Auto => open_router::ToolChoice::Auto,
484            LanguageModelToolChoice::Any => open_router::ToolChoice::Required,
485            LanguageModelToolChoice::None => open_router::ToolChoice::None,
486        }),
487    }
488}
489
490fn add_message_content_part(
491    new_part: open_router::MessagePart,
492    role: Role,
493    messages: &mut Vec<open_router::RequestMessage>,
494) {
495    match (role, messages.last_mut()) {
496        (Role::User, Some(open_router::RequestMessage::User { content }))
497        | (Role::System, Some(open_router::RequestMessage::System { content })) => {
498            content.push_part(new_part);
499        }
500        (
501            Role::Assistant,
502            Some(open_router::RequestMessage::Assistant {
503                content: Some(content),
504                ..
505            }),
506        ) => {
507            content.push_part(new_part);
508        }
509        _ => {
510            messages.push(match role {
511                Role::User => open_router::RequestMessage::User {
512                    content: open_router::MessageContent::from(vec![new_part]),
513                },
514                Role::Assistant => open_router::RequestMessage::Assistant {
515                    content: Some(open_router::MessageContent::from(vec![new_part])),
516                    tool_calls: Vec::new(),
517                },
518                Role::System => open_router::RequestMessage::System {
519                    content: open_router::MessageContent::from(vec![new_part]),
520                },
521            });
522        }
523    }
524}
525
526pub struct OpenRouterEventMapper {
527    tool_calls_by_index: HashMap<usize, RawToolCall>,
528}
529
530impl OpenRouterEventMapper {
531    pub fn new() -> Self {
532        Self {
533            tool_calls_by_index: HashMap::default(),
534        }
535    }
536
537    pub fn map_stream(
538        mut self,
539        events: Pin<Box<dyn Send + Stream<Item = Result<ResponseStreamEvent>>>>,
540    ) -> impl Stream<Item = Result<LanguageModelCompletionEvent, LanguageModelCompletionError>>
541    {
542        events.flat_map(move |event| {
543            futures::stream::iter(match event {
544                Ok(event) => self.map_event(event),
545                Err(error) => vec![Err(LanguageModelCompletionError::Other(anyhow!(error)))],
546            })
547        })
548    }
549
550    pub fn map_event(
551        &mut self,
552        event: ResponseStreamEvent,
553    ) -> Vec<Result<LanguageModelCompletionEvent, LanguageModelCompletionError>> {
554        let Some(choice) = event.choices.first() else {
555            return vec![Err(LanguageModelCompletionError::Other(anyhow!(
556                "Response contained no choices"
557            )))];
558        };
559
560        let mut events = Vec::new();
561        if let Some(content) = choice.delta.content.clone() {
562            events.push(Ok(LanguageModelCompletionEvent::Text(content)));
563        }
564
565        if let Some(tool_calls) = choice.delta.tool_calls.as_ref() {
566            for tool_call in tool_calls {
567                let entry = self.tool_calls_by_index.entry(tool_call.index).or_default();
568
569                if let Some(tool_id) = tool_call.id.clone() {
570                    entry.id = tool_id;
571                }
572
573                if let Some(function) = tool_call.function.as_ref() {
574                    if let Some(name) = function.name.clone() {
575                        entry.name = name;
576                    }
577
578                    if let Some(arguments) = function.arguments.clone() {
579                        entry.arguments.push_str(&arguments);
580                    }
581                }
582            }
583        }
584
585        if let Some(usage) = event.usage {
586            events.push(Ok(LanguageModelCompletionEvent::UsageUpdate(TokenUsage {
587                input_tokens: usage.prompt_tokens,
588                output_tokens: usage.completion_tokens,
589                cache_creation_input_tokens: 0,
590                cache_read_input_tokens: 0,
591            })));
592        }
593
594        match choice.finish_reason.as_deref() {
595            Some("stop") => {
596                events.push(Ok(LanguageModelCompletionEvent::Stop(StopReason::EndTurn)));
597            }
598            Some("tool_calls") => {
599                events.extend(self.tool_calls_by_index.drain().map(|(_, tool_call)| {
600                    match serde_json::Value::from_str(&tool_call.arguments) {
601                        Ok(input) => Ok(LanguageModelCompletionEvent::ToolUse(
602                            LanguageModelToolUse {
603                                id: tool_call.id.clone().into(),
604                                name: tool_call.name.as_str().into(),
605                                is_input_complete: true,
606                                input,
607                                raw_input: tool_call.arguments.clone(),
608                            },
609                        )),
610                        Err(error) => Err(LanguageModelCompletionError::BadInputJson {
611                            id: tool_call.id.into(),
612                            tool_name: tool_call.name.as_str().into(),
613                            raw_input: tool_call.arguments.into(),
614                            json_parse_error: error.to_string(),
615                        }),
616                    }
617                }));
618
619                events.push(Ok(LanguageModelCompletionEvent::Stop(StopReason::ToolUse)));
620            }
621            Some(stop_reason) => {
622                log::error!("Unexpected OpenRouter stop_reason: {stop_reason:?}",);
623                events.push(Ok(LanguageModelCompletionEvent::Stop(StopReason::EndTurn)));
624            }
625            None => {}
626        }
627
628        events
629    }
630}
631
632#[derive(Default)]
633struct RawToolCall {
634    id: String,
635    name: String,
636    arguments: String,
637}
638
639pub fn count_open_router_tokens(
640    request: LanguageModelRequest,
641    _model: open_router::Model,
642    cx: &App,
643) -> BoxFuture<'static, Result<u64>> {
644    cx.background_spawn(async move {
645        let messages = request
646            .messages
647            .into_iter()
648            .map(|message| tiktoken_rs::ChatCompletionRequestMessage {
649                role: match message.role {
650                    Role::User => "user".into(),
651                    Role::Assistant => "assistant".into(),
652                    Role::System => "system".into(),
653                },
654                content: Some(message.string_contents()),
655                name: None,
656                function_call: None,
657            })
658            .collect::<Vec<_>>();
659
660        tiktoken_rs::num_tokens_from_messages("gpt-4o", &messages).map(|tokens| tokens as u64)
661    })
662    .boxed()
663}
664
665struct ConfigurationView {
666    api_key_editor: Entity<Editor>,
667    state: gpui::Entity<State>,
668    load_credentials_task: Option<Task<()>>,
669}
670
671impl ConfigurationView {
672    fn new(state: gpui::Entity<State>, window: &mut Window, cx: &mut Context<Self>) -> Self {
673        let api_key_editor = cx.new(|cx| {
674            let mut editor = Editor::single_line(window, cx);
675            editor
676                .set_placeholder_text("sk_or_000000000000000000000000000000000000000000000000", cx);
677            editor
678        });
679
680        cx.observe(&state, |_, _, cx| {
681            cx.notify();
682        })
683        .detach();
684
685        let load_credentials_task = Some(cx.spawn_in(window, {
686            let state = state.clone();
687            async move |this, cx| {
688                if let Some(task) = state
689                    .update(cx, |state, cx| state.authenticate(cx))
690                    .log_err()
691                {
692                    let _ = task.await;
693                }
694
695                this.update(cx, |this, cx| {
696                    this.load_credentials_task = None;
697                    cx.notify();
698                })
699                .log_err();
700            }
701        }));
702
703        Self {
704            api_key_editor,
705            state,
706            load_credentials_task,
707        }
708    }
709
710    fn save_api_key(&mut self, _: &menu::Confirm, window: &mut Window, cx: &mut Context<Self>) {
711        let api_key = self.api_key_editor.read(cx).text(cx);
712        if api_key.is_empty() {
713            return;
714        }
715
716        let state = self.state.clone();
717        cx.spawn_in(window, async move |_, cx| {
718            state
719                .update(cx, |state, cx| state.set_api_key(api_key, cx))?
720                .await
721        })
722        .detach_and_log_err(cx);
723
724        cx.notify();
725    }
726
727    fn reset_api_key(&mut self, window: &mut Window, cx: &mut Context<Self>) {
728        self.api_key_editor
729            .update(cx, |editor, cx| editor.set_text("", window, cx));
730
731        let state = self.state.clone();
732        cx.spawn_in(window, async move |_, cx| {
733            state.update(cx, |state, cx| state.reset_api_key(cx))?.await
734        })
735        .detach_and_log_err(cx);
736
737        cx.notify();
738    }
739
740    fn render_api_key_editor(&self, cx: &mut Context<Self>) -> impl IntoElement {
741        let settings = ThemeSettings::get_global(cx);
742        let text_style = TextStyle {
743            color: cx.theme().colors().text,
744            font_family: settings.ui_font.family.clone(),
745            font_features: settings.ui_font.features.clone(),
746            font_fallbacks: settings.ui_font.fallbacks.clone(),
747            font_size: rems(0.875).into(),
748            font_weight: settings.ui_font.weight,
749            font_style: FontStyle::Normal,
750            line_height: relative(1.3),
751            white_space: WhiteSpace::Normal,
752            ..Default::default()
753        };
754        EditorElement::new(
755            &self.api_key_editor,
756            EditorStyle {
757                background: cx.theme().colors().editor_background,
758                local_player: cx.theme().players().local(),
759                text: text_style,
760                ..Default::default()
761            },
762        )
763    }
764
765    fn should_render_editor(&self, cx: &mut Context<Self>) -> bool {
766        !self.state.read(cx).is_authenticated()
767    }
768}
769
770impl Render for ConfigurationView {
771    fn render(&mut self, _: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
772        let env_var_set = self.state.read(cx).api_key_from_env;
773
774        if self.load_credentials_task.is_some() {
775            div().child(Label::new("Loading credentials...")).into_any()
776        } else if self.should_render_editor(cx) {
777            v_flex()
778                .size_full()
779                .on_action(cx.listener(Self::save_api_key))
780                .child(Label::new("To use Zed's assistant with OpenRouter, you need to add an API key. Follow these steps:"))
781                .child(
782                    List::new()
783                        .child(InstructionListItem::new(
784                            "Create an API key by visiting",
785                            Some("OpenRouter's console"),
786                            Some("https://openrouter.ai/keys"),
787                        ))
788                        .child(InstructionListItem::text_only(
789                            "Ensure your OpenRouter account has credits",
790                        ))
791                        .child(InstructionListItem::text_only(
792                            "Paste your API key below and hit enter to start using the assistant",
793                        )),
794                )
795                .child(
796                    h_flex()
797                        .w_full()
798                        .my_2()
799                        .px_2()
800                        .py_1()
801                        .bg(cx.theme().colors().editor_background)
802                        .border_1()
803                        .border_color(cx.theme().colors().border)
804                        .rounded_sm()
805                        .child(self.render_api_key_editor(cx)),
806                )
807                .child(
808                    Label::new(
809                        format!("You can also assign the {OPENROUTER_API_KEY_VAR} environment variable and restart Zed."),
810                    )
811                    .size(LabelSize::Small).color(Color::Muted),
812                )
813                .into_any()
814        } else {
815            h_flex()
816                .mt_1()
817                .p_1()
818                .justify_between()
819                .rounded_md()
820                .border_1()
821                .border_color(cx.theme().colors().border)
822                .bg(cx.theme().colors().background)
823                .child(
824                    h_flex()
825                        .gap_1()
826                        .child(Icon::new(IconName::Check).color(Color::Success))
827                        .child(Label::new(if env_var_set {
828                            format!("API key set in {OPENROUTER_API_KEY_VAR} environment variable.")
829                        } else {
830                            "API key configured.".to_string()
831                        })),
832                )
833                .child(
834                    Button::new("reset-key", "Reset Key")
835                        .label_size(LabelSize::Small)
836                        .icon(Some(IconName::Trash))
837                        .icon_size(IconSize::Small)
838                        .icon_position(IconPosition::Start)
839                        .disabled(env_var_set)
840                        .when(env_var_set, |this| {
841                            this.tooltip(Tooltip::text(format!("To reset your API key, unset the {OPENROUTER_API_KEY_VAR} environment variable.")))
842                        })
843                        .on_click(cx.listener(|this, _, window, cx| this.reset_api_key(window, cx))),
844                )
845                .into_any()
846        }
847    }
848}