open_ai.rs

  1use anyhow::{Context as _, Result, anyhow};
  2use collections::{BTreeMap, HashMap};
  3use credentials_provider::CredentialsProvider;
  4use editor::{Editor, EditorElement, EditorStyle};
  5use futures::Stream;
  6use futures::{FutureExt, StreamExt, future::BoxFuture};
  7use gpui::{
  8    AnyView, App, AsyncApp, Context, Entity, FontStyle, Subscription, Task, TextStyle, WhiteSpace,
  9};
 10use http_client::HttpClient;
 11use language_model::{
 12    AuthenticateError, LanguageModel, LanguageModelCompletionError, LanguageModelCompletionEvent,
 13    LanguageModelId, LanguageModelName, LanguageModelProvider, LanguageModelProviderId,
 14    LanguageModelProviderName, LanguageModelProviderState, LanguageModelRequest,
 15    LanguageModelToolChoice, LanguageModelToolResultContent, LanguageModelToolUse, MessageContent,
 16    RateLimiter, Role, StopReason, WrappedTextContent,
 17};
 18use open_ai::{ImageUrl, Model, ResponseStreamEvent, stream_completion};
 19use schemars::JsonSchema;
 20use serde::{Deserialize, Serialize};
 21use settings::{Settings, SettingsStore};
 22use std::pin::Pin;
 23use std::str::FromStr as _;
 24use std::sync::Arc;
 25use strum::IntoEnumIterator;
 26use theme::ThemeSettings;
 27use ui::{Icon, IconName, List, Tooltip, prelude::*};
 28use util::ResultExt;
 29
 30use crate::{AllLanguageModelSettings, ui::InstructionListItem};
 31
 32const PROVIDER_ID: &str = "openai";
 33const PROVIDER_NAME: &str = "OpenAI";
 34
 35#[derive(Default, Clone, Debug, PartialEq)]
 36pub struct OpenAiSettings {
 37    pub api_url: String,
 38    pub available_models: Vec<AvailableModel>,
 39    pub needs_setting_migration: bool,
 40}
 41
 42#[derive(Clone, Debug, PartialEq, Serialize, Deserialize, JsonSchema)]
 43pub struct AvailableModel {
 44    pub name: String,
 45    pub display_name: Option<String>,
 46    pub max_tokens: usize,
 47    pub max_output_tokens: Option<u32>,
 48    pub max_completion_tokens: Option<u32>,
 49}
 50
 51pub struct OpenAiLanguageModelProvider {
 52    http_client: Arc<dyn HttpClient>,
 53    state: gpui::Entity<State>,
 54}
 55
 56pub struct State {
 57    api_key: Option<String>,
 58    api_key_from_env: bool,
 59    _subscription: Subscription,
 60}
 61
 62const OPENAI_API_KEY_VAR: &str = "OPENAI_API_KEY";
 63
 64impl State {
 65    fn is_authenticated(&self) -> bool {
 66        self.api_key.is_some()
 67    }
 68
 69    fn reset_api_key(&self, cx: &mut Context<Self>) -> Task<Result<()>> {
 70        let credentials_provider = <dyn CredentialsProvider>::global(cx);
 71        let api_url = AllLanguageModelSettings::get_global(cx)
 72            .openai
 73            .api_url
 74            .clone();
 75        cx.spawn(async move |this, cx| {
 76            credentials_provider
 77                .delete_credentials(&api_url, &cx)
 78                .await
 79                .log_err();
 80            this.update(cx, |this, cx| {
 81                this.api_key = None;
 82                this.api_key_from_env = false;
 83                cx.notify();
 84            })
 85        })
 86    }
 87
 88    fn set_api_key(&mut self, api_key: String, cx: &mut Context<Self>) -> Task<Result<()>> {
 89        let credentials_provider = <dyn CredentialsProvider>::global(cx);
 90        let api_url = AllLanguageModelSettings::get_global(cx)
 91            .openai
 92            .api_url
 93            .clone();
 94        cx.spawn(async move |this, cx| {
 95            credentials_provider
 96                .write_credentials(&api_url, "Bearer", api_key.as_bytes(), &cx)
 97                .await
 98                .log_err();
 99            this.update(cx, |this, cx| {
100                this.api_key = Some(api_key);
101                cx.notify();
102            })
103        })
104    }
105
106    fn authenticate(&self, cx: &mut Context<Self>) -> Task<Result<(), AuthenticateError>> {
107        if self.is_authenticated() {
108            return Task::ready(Ok(()));
109        }
110
111        let credentials_provider = <dyn CredentialsProvider>::global(cx);
112        let api_url = AllLanguageModelSettings::get_global(cx)
113            .openai
114            .api_url
115            .clone();
116        cx.spawn(async move |this, cx| {
117            let (api_key, from_env) = if let Ok(api_key) = std::env::var(OPENAI_API_KEY_VAR) {
118                (api_key, true)
119            } else {
120                let (_, api_key) = credentials_provider
121                    .read_credentials(&api_url, &cx)
122                    .await?
123                    .ok_or(AuthenticateError::CredentialsNotFound)?;
124                (
125                    String::from_utf8(api_key).context("invalid {PROVIDER_NAME} API key")?,
126                    false,
127                )
128            };
129            this.update(cx, |this, cx| {
130                this.api_key = Some(api_key);
131                this.api_key_from_env = from_env;
132                cx.notify();
133            })?;
134
135            Ok(())
136        })
137    }
138}
139
140impl OpenAiLanguageModelProvider {
141    pub fn new(http_client: Arc<dyn HttpClient>, cx: &mut App) -> Self {
142        let state = cx.new(|cx| State {
143            api_key: None,
144            api_key_from_env: false,
145            _subscription: cx.observe_global::<SettingsStore>(|_this: &mut State, cx| {
146                cx.notify();
147            }),
148        });
149
150        Self { http_client, state }
151    }
152
153    fn create_language_model(&self, model: open_ai::Model) -> Arc<dyn LanguageModel> {
154        Arc::new(OpenAiLanguageModel {
155            id: LanguageModelId::from(model.id().to_string()),
156            model,
157            state: self.state.clone(),
158            http_client: self.http_client.clone(),
159            request_limiter: RateLimiter::new(4),
160        })
161    }
162}
163
164impl LanguageModelProviderState for OpenAiLanguageModelProvider {
165    type ObservableEntity = State;
166
167    fn observable_entity(&self) -> Option<gpui::Entity<Self::ObservableEntity>> {
168        Some(self.state.clone())
169    }
170}
171
172impl LanguageModelProvider for OpenAiLanguageModelProvider {
173    fn id(&self) -> LanguageModelProviderId {
174        LanguageModelProviderId(PROVIDER_ID.into())
175    }
176
177    fn name(&self) -> LanguageModelProviderName {
178        LanguageModelProviderName(PROVIDER_NAME.into())
179    }
180
181    fn icon(&self) -> IconName {
182        IconName::AiOpenAi
183    }
184
185    fn default_model(&self, _cx: &App) -> Option<Arc<dyn LanguageModel>> {
186        Some(self.create_language_model(open_ai::Model::default()))
187    }
188
189    fn default_fast_model(&self, _cx: &App) -> Option<Arc<dyn LanguageModel>> {
190        Some(self.create_language_model(open_ai::Model::default_fast()))
191    }
192
193    fn provided_models(&self, cx: &App) -> Vec<Arc<dyn LanguageModel>> {
194        let mut models = BTreeMap::default();
195
196        // Add base models from open_ai::Model::iter()
197        for model in open_ai::Model::iter() {
198            if !matches!(model, open_ai::Model::Custom { .. }) {
199                models.insert(model.id().to_string(), model);
200            }
201        }
202
203        // Override with available models from settings
204        for model in &AllLanguageModelSettings::get_global(cx)
205            .openai
206            .available_models
207        {
208            models.insert(
209                model.name.clone(),
210                open_ai::Model::Custom {
211                    name: model.name.clone(),
212                    display_name: model.display_name.clone(),
213                    max_tokens: model.max_tokens,
214                    max_output_tokens: model.max_output_tokens,
215                    max_completion_tokens: model.max_completion_tokens,
216                },
217            );
218        }
219
220        models
221            .into_values()
222            .map(|model| self.create_language_model(model))
223            .collect()
224    }
225
226    fn is_authenticated(&self, cx: &App) -> bool {
227        self.state.read(cx).is_authenticated()
228    }
229
230    fn authenticate(&self, cx: &mut App) -> Task<Result<(), AuthenticateError>> {
231        self.state.update(cx, |state, cx| state.authenticate(cx))
232    }
233
234    fn configuration_view(&self, window: &mut Window, cx: &mut App) -> AnyView {
235        cx.new(|cx| ConfigurationView::new(self.state.clone(), window, cx))
236            .into()
237    }
238
239    fn reset_credentials(&self, cx: &mut App) -> Task<Result<()>> {
240        self.state.update(cx, |state, cx| state.reset_api_key(cx))
241    }
242}
243
244pub struct OpenAiLanguageModel {
245    id: LanguageModelId,
246    model: open_ai::Model,
247    state: gpui::Entity<State>,
248    http_client: Arc<dyn HttpClient>,
249    request_limiter: RateLimiter,
250}
251
252impl OpenAiLanguageModel {
253    fn stream_completion(
254        &self,
255        request: open_ai::Request,
256        cx: &AsyncApp,
257    ) -> BoxFuture<'static, Result<futures::stream::BoxStream<'static, Result<ResponseStreamEvent>>>>
258    {
259        let http_client = self.http_client.clone();
260        let Ok((api_key, api_url)) = cx.read_entity(&self.state, |state, cx| {
261            let settings = &AllLanguageModelSettings::get_global(cx).openai;
262            (state.api_key.clone(), settings.api_url.clone())
263        }) else {
264            return futures::future::ready(Err(anyhow!("App state dropped"))).boxed();
265        };
266
267        let future = self.request_limiter.stream(async move {
268            let api_key = api_key.context("Missing OpenAI API Key")?;
269            let request = stream_completion(http_client.as_ref(), &api_url, &api_key, request);
270            let response = request.await?;
271            Ok(response)
272        });
273
274        async move { Ok(future.await?.boxed()) }.boxed()
275    }
276}
277
278impl LanguageModel for OpenAiLanguageModel {
279    fn id(&self) -> LanguageModelId {
280        self.id.clone()
281    }
282
283    fn name(&self) -> LanguageModelName {
284        LanguageModelName::from(self.model.display_name().to_string())
285    }
286
287    fn provider_id(&self) -> LanguageModelProviderId {
288        LanguageModelProviderId(PROVIDER_ID.into())
289    }
290
291    fn provider_name(&self) -> LanguageModelProviderName {
292        LanguageModelProviderName(PROVIDER_NAME.into())
293    }
294
295    fn supports_tools(&self) -> bool {
296        true
297    }
298
299    fn supports_images(&self) -> bool {
300        false
301    }
302
303    fn supports_tool_choice(&self, choice: LanguageModelToolChoice) -> bool {
304        match choice {
305            LanguageModelToolChoice::Auto => true,
306            LanguageModelToolChoice::Any => true,
307            LanguageModelToolChoice::None => true,
308        }
309    }
310
311    fn telemetry_id(&self) -> String {
312        format!("openai/{}", self.model.id())
313    }
314
315    fn max_token_count(&self) -> usize {
316        self.model.max_token_count()
317    }
318
319    fn max_output_tokens(&self) -> Option<u32> {
320        self.model.max_output_tokens()
321    }
322
323    fn count_tokens(
324        &self,
325        request: LanguageModelRequest,
326        cx: &App,
327    ) -> BoxFuture<'static, Result<usize>> {
328        count_open_ai_tokens(request, self.model.clone(), cx)
329    }
330
331    fn stream_completion(
332        &self,
333        request: LanguageModelRequest,
334        cx: &AsyncApp,
335    ) -> BoxFuture<
336        'static,
337        Result<
338            futures::stream::BoxStream<
339                'static,
340                Result<LanguageModelCompletionEvent, LanguageModelCompletionError>,
341            >,
342        >,
343    > {
344        let request = into_open_ai(request, &self.model, self.max_output_tokens());
345        let completions = self.stream_completion(request, cx);
346        async move {
347            let mapper = OpenAiEventMapper::new();
348            Ok(mapper.map_stream(completions.await?).boxed())
349        }
350        .boxed()
351    }
352}
353
354pub fn into_open_ai(
355    request: LanguageModelRequest,
356    model: &Model,
357    max_output_tokens: Option<u32>,
358) -> open_ai::Request {
359    let stream = !model.id().starts_with("o1-");
360
361    let mut messages = Vec::new();
362    for message in request.messages {
363        for content in message.content {
364            match content {
365                MessageContent::Text(text) | MessageContent::Thinking { text, .. } => {
366                    add_message_content_part(
367                        open_ai::MessagePart::Text { text: text },
368                        message.role,
369                        &mut messages,
370                    )
371                }
372                MessageContent::RedactedThinking(_) => {}
373                MessageContent::Image(image) => {
374                    add_message_content_part(
375                        open_ai::MessagePart::Image {
376                            image_url: ImageUrl {
377                                url: image.to_base64_url(),
378                                detail: None,
379                            },
380                        },
381                        message.role,
382                        &mut messages,
383                    );
384                }
385                MessageContent::ToolUse(tool_use) => {
386                    let tool_call = open_ai::ToolCall {
387                        id: tool_use.id.to_string(),
388                        content: open_ai::ToolCallContent::Function {
389                            function: open_ai::FunctionContent {
390                                name: tool_use.name.to_string(),
391                                arguments: serde_json::to_string(&tool_use.input)
392                                    .unwrap_or_default(),
393                            },
394                        },
395                    };
396
397                    if let Some(open_ai::RequestMessage::Assistant { tool_calls, .. }) =
398                        messages.last_mut()
399                    {
400                        tool_calls.push(tool_call);
401                    } else {
402                        messages.push(open_ai::RequestMessage::Assistant {
403                            content: None,
404                            tool_calls: vec![tool_call],
405                        });
406                    }
407                }
408                MessageContent::ToolResult(tool_result) => {
409                    let content = match &tool_result.content {
410                        LanguageModelToolResultContent::Text(text)
411                        | LanguageModelToolResultContent::WrappedText(WrappedTextContent {
412                            text,
413                            ..
414                        }) => {
415                            vec![open_ai::MessagePart::Text {
416                                text: text.to_string(),
417                            }]
418                        }
419                        LanguageModelToolResultContent::Image(image) => {
420                            vec![open_ai::MessagePart::Image {
421                                image_url: ImageUrl {
422                                    url: image.to_base64_url(),
423                                    detail: None,
424                                },
425                            }]
426                        }
427                    };
428
429                    messages.push(open_ai::RequestMessage::Tool {
430                        content: content.into(),
431                        tool_call_id: tool_result.tool_use_id.to_string(),
432                    });
433                }
434            }
435        }
436    }
437
438    open_ai::Request {
439        model: model.id().into(),
440        messages,
441        stream,
442        stop: request.stop,
443        temperature: request.temperature.unwrap_or(1.0),
444        max_tokens: max_output_tokens,
445        parallel_tool_calls: if model.supports_parallel_tool_calls() && !request.tools.is_empty() {
446            // Disable parallel tool calls, as the Agent currently expects a maximum of one per turn.
447            Some(false)
448        } else {
449            None
450        },
451        tools: request
452            .tools
453            .into_iter()
454            .map(|tool| open_ai::ToolDefinition::Function {
455                function: open_ai::FunctionDefinition {
456                    name: tool.name,
457                    description: Some(tool.description),
458                    parameters: Some(tool.input_schema),
459                },
460            })
461            .collect(),
462        tool_choice: request.tool_choice.map(|choice| match choice {
463            LanguageModelToolChoice::Auto => open_ai::ToolChoice::Auto,
464            LanguageModelToolChoice::Any => open_ai::ToolChoice::Required,
465            LanguageModelToolChoice::None => open_ai::ToolChoice::None,
466        }),
467    }
468}
469
470fn add_message_content_part(
471    new_part: open_ai::MessagePart,
472    role: Role,
473    messages: &mut Vec<open_ai::RequestMessage>,
474) {
475    match (role, messages.last_mut()) {
476        (Role::User, Some(open_ai::RequestMessage::User { content }))
477        | (
478            Role::Assistant,
479            Some(open_ai::RequestMessage::Assistant {
480                content: Some(content),
481                ..
482            }),
483        )
484        | (Role::System, Some(open_ai::RequestMessage::System { content, .. })) => {
485            content.push_part(new_part);
486        }
487        _ => {
488            messages.push(match role {
489                Role::User => open_ai::RequestMessage::User {
490                    content: open_ai::MessageContent::from(vec![new_part]),
491                },
492                Role::Assistant => open_ai::RequestMessage::Assistant {
493                    content: Some(open_ai::MessageContent::from(vec![new_part])),
494                    tool_calls: Vec::new(),
495                },
496                Role::System => open_ai::RequestMessage::System {
497                    content: open_ai::MessageContent::from(vec![new_part]),
498                },
499            });
500        }
501    }
502}
503
504pub struct OpenAiEventMapper {
505    tool_calls_by_index: HashMap<usize, RawToolCall>,
506}
507
508impl OpenAiEventMapper {
509    pub fn new() -> Self {
510        Self {
511            tool_calls_by_index: HashMap::default(),
512        }
513    }
514
515    pub fn map_stream(
516        mut self,
517        events: Pin<Box<dyn Send + Stream<Item = Result<ResponseStreamEvent>>>>,
518    ) -> impl Stream<Item = Result<LanguageModelCompletionEvent, LanguageModelCompletionError>>
519    {
520        events.flat_map(move |event| {
521            futures::stream::iter(match event {
522                Ok(event) => self.map_event(event),
523                Err(error) => vec![Err(LanguageModelCompletionError::Other(anyhow!(error)))],
524            })
525        })
526    }
527
528    pub fn map_event(
529        &mut self,
530        event: ResponseStreamEvent,
531    ) -> Vec<Result<LanguageModelCompletionEvent, LanguageModelCompletionError>> {
532        let Some(choice) = event.choices.first() else {
533            return vec![Err(LanguageModelCompletionError::Other(anyhow!(
534                "Response contained no choices"
535            )))];
536        };
537
538        let mut events = Vec::new();
539        if let Some(content) = choice.delta.content.clone() {
540            events.push(Ok(LanguageModelCompletionEvent::Text(content)));
541        }
542
543        if let Some(tool_calls) = choice.delta.tool_calls.as_ref() {
544            for tool_call in tool_calls {
545                let entry = self.tool_calls_by_index.entry(tool_call.index).or_default();
546
547                if let Some(tool_id) = tool_call.id.clone() {
548                    entry.id = tool_id;
549                }
550
551                if let Some(function) = tool_call.function.as_ref() {
552                    if let Some(name) = function.name.clone() {
553                        entry.name = name;
554                    }
555
556                    if let Some(arguments) = function.arguments.clone() {
557                        entry.arguments.push_str(&arguments);
558                    }
559                }
560            }
561        }
562
563        match choice.finish_reason.as_deref() {
564            Some("stop") => {
565                events.push(Ok(LanguageModelCompletionEvent::Stop(StopReason::EndTurn)));
566            }
567            Some("tool_calls") => {
568                events.extend(self.tool_calls_by_index.drain().map(|(_, tool_call)| {
569                    match serde_json::Value::from_str(&tool_call.arguments) {
570                        Ok(input) => Ok(LanguageModelCompletionEvent::ToolUse(
571                            LanguageModelToolUse {
572                                id: tool_call.id.clone().into(),
573                                name: tool_call.name.as_str().into(),
574                                is_input_complete: true,
575                                input,
576                                raw_input: tool_call.arguments.clone(),
577                            },
578                        )),
579                        Err(error) => Err(LanguageModelCompletionError::BadInputJson {
580                            id: tool_call.id.into(),
581                            tool_name: tool_call.name.as_str().into(),
582                            raw_input: tool_call.arguments.into(),
583                            json_parse_error: error.to_string(),
584                        }),
585                    }
586                }));
587
588                events.push(Ok(LanguageModelCompletionEvent::Stop(StopReason::ToolUse)));
589            }
590            Some(stop_reason) => {
591                log::error!("Unexpected OpenAI stop_reason: {stop_reason:?}",);
592                events.push(Ok(LanguageModelCompletionEvent::Stop(StopReason::EndTurn)));
593            }
594            None => {}
595        }
596
597        events
598    }
599}
600
601#[derive(Default)]
602struct RawToolCall {
603    id: String,
604    name: String,
605    arguments: String,
606}
607
608pub fn count_open_ai_tokens(
609    request: LanguageModelRequest,
610    model: Model,
611    cx: &App,
612) -> BoxFuture<'static, Result<usize>> {
613    cx.background_spawn(async move {
614        let messages = request
615            .messages
616            .into_iter()
617            .map(|message| tiktoken_rs::ChatCompletionRequestMessage {
618                role: match message.role {
619                    Role::User => "user".into(),
620                    Role::Assistant => "assistant".into(),
621                    Role::System => "system".into(),
622                },
623                content: Some(message.string_contents()),
624                name: None,
625                function_call: None,
626            })
627            .collect::<Vec<_>>();
628
629        match model {
630            Model::Custom { max_tokens, .. } => {
631                let model = if max_tokens >= 100_000 {
632                    // If the max tokens is 100k or more, it is likely the o200k_base tokenizer from gpt4o
633                    "gpt-4o"
634                } else {
635                    // Otherwise fallback to gpt-4, since only cl100k_base and o200k_base are
636                    // supported with this tiktoken method
637                    "gpt-4"
638                };
639                tiktoken_rs::num_tokens_from_messages(model, &messages)
640            }
641            // Currently supported by tiktoken_rs
642            // Sometimes tiktoken-rs is behind on model support. If that is the case, make a new branch
643            // arm with an override. We enumerate all supported models here so that we can check if new
644            // models are supported yet or not.
645            Model::ThreePointFiveTurbo
646            | Model::Four
647            | Model::FourTurbo
648            | Model::FourOmni
649            | Model::FourOmniMini
650            | Model::FourPointOne
651            | Model::FourPointOneMini
652            | Model::FourPointOneNano
653            | Model::O1
654            | Model::O1Preview
655            | Model::O1Mini
656            | Model::O3
657            | Model::O3Mini
658            | Model::O4Mini => tiktoken_rs::num_tokens_from_messages(model.id(), &messages),
659        }
660    })
661    .boxed()
662}
663
664struct ConfigurationView {
665    api_key_editor: Entity<Editor>,
666    state: gpui::Entity<State>,
667    load_credentials_task: Option<Task<()>>,
668}
669
670impl ConfigurationView {
671    fn new(state: gpui::Entity<State>, window: &mut Window, cx: &mut Context<Self>) -> Self {
672        let api_key_editor = cx.new(|cx| {
673            let mut editor = Editor::single_line(window, cx);
674            editor.set_placeholder_text("sk-000000000000000000000000000000000000000000000000", cx);
675            editor
676        });
677
678        cx.observe(&state, |_, _, cx| {
679            cx.notify();
680        })
681        .detach();
682
683        let load_credentials_task = Some(cx.spawn_in(window, {
684            let state = state.clone();
685            async move |this, cx| {
686                if let Some(task) = state
687                    .update(cx, |state, cx| state.authenticate(cx))
688                    .log_err()
689                {
690                    // We don't log an error, because "not signed in" is also an error.
691                    let _ = task.await;
692                }
693
694                this.update(cx, |this, cx| {
695                    this.load_credentials_task = None;
696                    cx.notify();
697                })
698                .log_err();
699            }
700        }));
701
702        Self {
703            api_key_editor,
704            state,
705            load_credentials_task,
706        }
707    }
708
709    fn save_api_key(&mut self, _: &menu::Confirm, window: &mut Window, cx: &mut Context<Self>) {
710        let api_key = self.api_key_editor.read(cx).text(cx);
711        if api_key.is_empty() {
712            return;
713        }
714
715        let state = self.state.clone();
716        cx.spawn_in(window, async move |_, cx| {
717            state
718                .update(cx, |state, cx| state.set_api_key(api_key, cx))?
719                .await
720        })
721        .detach_and_log_err(cx);
722
723        cx.notify();
724    }
725
726    fn reset_api_key(&mut self, window: &mut Window, cx: &mut Context<Self>) {
727        self.api_key_editor
728            .update(cx, |editor, cx| editor.set_text("", window, cx));
729
730        let state = self.state.clone();
731        cx.spawn_in(window, async move |_, cx| {
732            state.update(cx, |state, cx| state.reset_api_key(cx))?.await
733        })
734        .detach_and_log_err(cx);
735
736        cx.notify();
737    }
738
739    fn render_api_key_editor(&self, cx: &mut Context<Self>) -> impl IntoElement {
740        let settings = ThemeSettings::get_global(cx);
741        let text_style = TextStyle {
742            color: cx.theme().colors().text,
743            font_family: settings.ui_font.family.clone(),
744            font_features: settings.ui_font.features.clone(),
745            font_fallbacks: settings.ui_font.fallbacks.clone(),
746            font_size: rems(0.875).into(),
747            font_weight: settings.ui_font.weight,
748            font_style: FontStyle::Normal,
749            line_height: relative(1.3),
750            white_space: WhiteSpace::Normal,
751            ..Default::default()
752        };
753        EditorElement::new(
754            &self.api_key_editor,
755            EditorStyle {
756                background: cx.theme().colors().editor_background,
757                local_player: cx.theme().players().local(),
758                text: text_style,
759                ..Default::default()
760            },
761        )
762    }
763
764    fn should_render_editor(&self, cx: &mut Context<Self>) -> bool {
765        !self.state.read(cx).is_authenticated()
766    }
767}
768
769impl Render for ConfigurationView {
770    fn render(&mut self, _: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
771        let env_var_set = self.state.read(cx).api_key_from_env;
772
773        if self.load_credentials_task.is_some() {
774            div().child(Label::new("Loading credentials...")).into_any()
775        } else if self.should_render_editor(cx) {
776            v_flex()
777                .size_full()
778                .on_action(cx.listener(Self::save_api_key))
779                .child(Label::new("To use Zed's assistant with OpenAI, you need to add an API key. Follow these steps:"))
780                .child(
781                    List::new()
782                        .child(InstructionListItem::new(
783                            "Create one by visiting",
784                            Some("OpenAI's console"),
785                            Some("https://platform.openai.com/api-keys"),
786                        ))
787                        .child(InstructionListItem::text_only(
788                            "Ensure your OpenAI account has credits",
789                        ))
790                        .child(InstructionListItem::text_only(
791                            "Paste your API key below and hit enter to start using the assistant",
792                        )),
793                )
794                .child(
795                    h_flex()
796                        .w_full()
797                        .my_2()
798                        .px_2()
799                        .py_1()
800                        .bg(cx.theme().colors().editor_background)
801                        .border_1()
802                        .border_color(cx.theme().colors().border)
803                        .rounded_sm()
804                        .child(self.render_api_key_editor(cx)),
805                )
806                .child(
807                    Label::new(
808                        format!("You can also assign the {OPENAI_API_KEY_VAR} environment variable and restart Zed."),
809                    )
810                    .size(LabelSize::Small).color(Color::Muted),
811                )
812                .child(
813                    Label::new(
814                        "Note that having a subscription for another service like GitHub Copilot won't work.".to_string(),
815                    )
816                    .size(LabelSize::Small).color(Color::Muted),
817                )
818                .into_any()
819        } else {
820            h_flex()
821                .mt_1()
822                .p_1()
823                .justify_between()
824                .rounded_md()
825                .border_1()
826                .border_color(cx.theme().colors().border)
827                .bg(cx.theme().colors().background)
828                .child(
829                    h_flex()
830                        .gap_1()
831                        .child(Icon::new(IconName::Check).color(Color::Success))
832                        .child(Label::new(if env_var_set {
833                            format!("API key set in {OPENAI_API_KEY_VAR} environment variable.")
834                        } else {
835                            "API key configured.".to_string()
836                        })),
837                )
838                .child(
839                    Button::new("reset-key", "Reset Key")
840                        .label_size(LabelSize::Small)
841                        .icon(Some(IconName::Trash))
842                        .icon_size(IconSize::Small)
843                        .icon_position(IconPosition::Start)
844                        .disabled(env_var_set)
845                        .when(env_var_set, |this| {
846                            this.tooltip(Tooltip::text(format!("To reset your API key, unset the {OPENAI_API_KEY_VAR} environment variable.")))
847                        })
848                        .on_click(cx.listener(|this, _, window, cx| this.reset_api_key(window, cx))),
849                )
850                .into_any()
851        }
852    }
853}
854
855#[cfg(test)]
856mod tests {
857    use gpui::TestAppContext;
858    use language_model::LanguageModelRequestMessage;
859
860    use super::*;
861
862    #[gpui::test]
863    fn tiktoken_rs_support(cx: &TestAppContext) {
864        let request = LanguageModelRequest {
865            thread_id: None,
866            prompt_id: None,
867            mode: None,
868            messages: vec![LanguageModelRequestMessage {
869                role: Role::User,
870                content: vec![MessageContent::Text("message".into())],
871                cache: false,
872            }],
873            tools: vec![],
874            tool_choice: None,
875            stop: vec![],
876            temperature: None,
877        };
878
879        // Validate that all models are supported by tiktoken-rs
880        for model in Model::iter() {
881            let count = cx
882                .executor()
883                .block(count_open_ai_tokens(
884                    request.clone(),
885                    model,
886                    &cx.app.borrow(),
887                ))
888                .unwrap();
889            assert!(count > 0);
890        }
891    }
892}