open_ai.rs

   1use anyhow::{Context as _, Result, anyhow};
   2use collections::{BTreeMap, HashMap};
   3use credentials_provider::CredentialsProvider;
   4
   5use fs::Fs;
   6use futures::Stream;
   7use futures::{FutureExt, StreamExt, future::BoxFuture};
   8use gpui::{AnyView, App, AsyncApp, Context, Entity, Subscription, Task, Window};
   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,
  16};
  17use menu;
  18use open_ai::{ImageUrl, Model, ResponseStreamEvent, stream_completion};
  19use schemars::JsonSchema;
  20use serde::{Deserialize, Serialize};
  21use settings::{Settings, SettingsStore, update_settings_file};
  22use std::pin::Pin;
  23use std::str::FromStr as _;
  24use std::sync::Arc;
  25use strum::IntoEnumIterator;
  26
  27use ui::{ElevationIndex, List, Tooltip, prelude::*};
  28use ui_input::SingleLineInput;
  29use util::ResultExt;
  30
  31use crate::{AllLanguageModelSettings, ui::InstructionListItem};
  32
  33const PROVIDER_ID: &str = "openai";
  34const PROVIDER_NAME: &str = "OpenAI";
  35
  36#[derive(Default, Clone, Debug, PartialEq)]
  37pub struct OpenAiSettings {
  38    pub api_url: String,
  39    pub available_models: Vec<AvailableModel>,
  40    pub needs_setting_migration: bool,
  41}
  42
  43#[derive(Clone, Debug, PartialEq, Serialize, Deserialize, JsonSchema)]
  44pub struct AvailableModel {
  45    pub name: String,
  46    pub display_name: Option<String>,
  47    pub max_tokens: u64,
  48    pub max_output_tokens: Option<u64>,
  49    pub max_completion_tokens: Option<u64>,
  50}
  51
  52pub struct OpenAiLanguageModelProvider {
  53    http_client: Arc<dyn HttpClient>,
  54    state: gpui::Entity<State>,
  55}
  56
  57pub struct State {
  58    api_key: Option<String>,
  59    api_key_from_env: bool,
  60    _subscription: Subscription,
  61}
  62
  63const OPENAI_API_KEY_VAR: &str = "OPENAI_API_KEY";
  64
  65impl State {
  66    //
  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            .openai
  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            .openai
  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            .openai
 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(OPENAI_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).context("invalid {PROVIDER_NAME} API key")?,
 128                    false,
 129                )
 130            };
 131            this.update(cx, |this, cx| {
 132                this.api_key = Some(api_key);
 133                this.api_key_from_env = from_env;
 134                cx.notify();
 135            })?;
 136
 137            Ok(())
 138        })
 139    }
 140}
 141
 142impl OpenAiLanguageModelProvider {
 143    pub fn new(http_client: Arc<dyn HttpClient>, cx: &mut App) -> Self {
 144        let state = cx.new(|cx| State {
 145            api_key: None,
 146            api_key_from_env: false,
 147            _subscription: cx.observe_global::<SettingsStore>(|_this: &mut State, cx| {
 148                cx.notify();
 149            }),
 150        });
 151
 152        Self { http_client, state }
 153    }
 154
 155    fn create_language_model(&self, model: open_ai::Model) -> Arc<dyn LanguageModel> {
 156        Arc::new(OpenAiLanguageModel {
 157            id: LanguageModelId::from(model.id().to_string()),
 158            model,
 159            state: self.state.clone(),
 160            http_client: self.http_client.clone(),
 161            request_limiter: RateLimiter::new(4),
 162        })
 163    }
 164}
 165
 166impl LanguageModelProviderState for OpenAiLanguageModelProvider {
 167    type ObservableEntity = State;
 168
 169    fn observable_entity(&self) -> Option<gpui::Entity<Self::ObservableEntity>> {
 170        Some(self.state.clone())
 171    }
 172}
 173
 174impl LanguageModelProvider for OpenAiLanguageModelProvider {
 175    fn id(&self) -> LanguageModelProviderId {
 176        LanguageModelProviderId(PROVIDER_ID.into())
 177    }
 178
 179    fn name(&self) -> LanguageModelProviderName {
 180        LanguageModelProviderName(PROVIDER_NAME.into())
 181    }
 182
 183    fn icon(&self) -> IconName {
 184        IconName::AiOpenAi
 185    }
 186
 187    fn default_model(&self, _cx: &App) -> Option<Arc<dyn LanguageModel>> {
 188        Some(self.create_language_model(open_ai::Model::default()))
 189    }
 190
 191    fn default_fast_model(&self, _cx: &App) -> Option<Arc<dyn LanguageModel>> {
 192        Some(self.create_language_model(open_ai::Model::default_fast()))
 193    }
 194
 195    fn provided_models(&self, cx: &App) -> Vec<Arc<dyn LanguageModel>> {
 196        let mut models = BTreeMap::default();
 197
 198        // Add base models from open_ai::Model::iter()
 199        for model in open_ai::Model::iter() {
 200            if !matches!(model, open_ai::Model::Custom { .. }) {
 201                models.insert(model.id().to_string(), model);
 202            }
 203        }
 204
 205        // Override with available models from settings
 206        for model in &AllLanguageModelSettings::get_global(cx)
 207            .openai
 208            .available_models
 209        {
 210            models.insert(
 211                model.name.clone(),
 212                open_ai::Model::Custom {
 213                    name: model.name.clone(),
 214                    display_name: model.display_name.clone(),
 215                    max_tokens: model.max_tokens,
 216                    max_output_tokens: model.max_output_tokens,
 217                    max_completion_tokens: model.max_completion_tokens,
 218                },
 219            );
 220        }
 221
 222        models
 223            .into_values()
 224            .map(|model| self.create_language_model(model))
 225            .collect()
 226    }
 227
 228    fn is_authenticated(&self, cx: &App) -> bool {
 229        self.state.read(cx).is_authenticated()
 230    }
 231
 232    fn authenticate(&self, cx: &mut App) -> Task<Result<(), AuthenticateError>> {
 233        self.state.update(cx, |state, cx| state.authenticate(cx))
 234    }
 235
 236    fn configuration_view(&self, window: &mut Window, cx: &mut App) -> AnyView {
 237        cx.new(|cx| ConfigurationView::new(self.state.clone(), window, cx))
 238            .into()
 239    }
 240
 241    fn reset_credentials(&self, cx: &mut App) -> Task<Result<()>> {
 242        self.state.update(cx, |state, cx| state.reset_api_key(cx))
 243    }
 244}
 245
 246pub struct OpenAiLanguageModel {
 247    id: LanguageModelId,
 248    model: open_ai::Model,
 249    state: gpui::Entity<State>,
 250    http_client: Arc<dyn HttpClient>,
 251    request_limiter: RateLimiter,
 252}
 253
 254impl OpenAiLanguageModel {
 255    fn stream_completion(
 256        &self,
 257        request: open_ai::Request,
 258        cx: &AsyncApp,
 259    ) -> BoxFuture<'static, Result<futures::stream::BoxStream<'static, Result<ResponseStreamEvent>>>>
 260    {
 261        let http_client = self.http_client.clone();
 262        let Ok((api_key, api_url)) = cx.read_entity(&self.state, |state, cx| {
 263            let settings = &AllLanguageModelSettings::get_global(cx).openai;
 264            (state.api_key.clone(), settings.api_url.clone())
 265        }) else {
 266            return futures::future::ready(Err(anyhow!("App state dropped"))).boxed();
 267        };
 268
 269        let future = self.request_limiter.stream(async move {
 270            let api_key = api_key.context("Missing OpenAI API Key")?;
 271            let request = stream_completion(http_client.as_ref(), &api_url, &api_key, request);
 272            let response = request.await?;
 273            Ok(response)
 274        });
 275
 276        async move { Ok(future.await?.boxed()) }.boxed()
 277    }
 278}
 279
 280impl LanguageModel for OpenAiLanguageModel {
 281    fn id(&self) -> LanguageModelId {
 282        self.id.clone()
 283    }
 284
 285    fn name(&self) -> LanguageModelName {
 286        LanguageModelName::from(self.model.display_name().to_string())
 287    }
 288
 289    fn provider_id(&self) -> LanguageModelProviderId {
 290        LanguageModelProviderId(PROVIDER_ID.into())
 291    }
 292
 293    fn provider_name(&self) -> LanguageModelProviderName {
 294        LanguageModelProviderName(PROVIDER_NAME.into())
 295    }
 296
 297    fn supports_tools(&self) -> bool {
 298        true
 299    }
 300
 301    fn supports_images(&self) -> bool {
 302        false
 303    }
 304
 305    fn supports_tool_choice(&self, choice: LanguageModelToolChoice) -> bool {
 306        match choice {
 307            LanguageModelToolChoice::Auto => true,
 308            LanguageModelToolChoice::Any => true,
 309            LanguageModelToolChoice::None => true,
 310        }
 311    }
 312
 313    fn telemetry_id(&self) -> String {
 314        format!("openai/{}", self.model.id())
 315    }
 316
 317    fn max_token_count(&self) -> u64 {
 318        self.model.max_token_count()
 319    }
 320
 321    fn max_output_tokens(&self) -> Option<u64> {
 322        self.model.max_output_tokens()
 323    }
 324
 325    fn count_tokens(
 326        &self,
 327        request: LanguageModelRequest,
 328        cx: &App,
 329    ) -> BoxFuture<'static, Result<u64>> {
 330        count_open_ai_tokens(request, self.model.clone(), cx)
 331    }
 332
 333    fn stream_completion(
 334        &self,
 335        request: LanguageModelRequest,
 336        cx: &AsyncApp,
 337    ) -> BoxFuture<
 338        'static,
 339        Result<
 340            futures::stream::BoxStream<
 341                'static,
 342                Result<LanguageModelCompletionEvent, LanguageModelCompletionError>,
 343            >,
 344            LanguageModelCompletionError,
 345        >,
 346    > {
 347        let request = into_open_ai(request, &self.model, self.max_output_tokens());
 348        let completions = self.stream_completion(request, cx);
 349        async move {
 350            let mapper = OpenAiEventMapper::new();
 351            Ok(mapper.map_stream(completions.await?).boxed())
 352        }
 353        .boxed()
 354    }
 355}
 356
 357pub fn into_open_ai(
 358    request: LanguageModelRequest,
 359    model: &Model,
 360    max_output_tokens: Option<u64>,
 361) -> open_ai::Request {
 362    let stream = !model.id().starts_with("o1-");
 363
 364    let mut messages = Vec::new();
 365    for message in request.messages {
 366        for content in message.content {
 367            match content {
 368                MessageContent::Text(text) | MessageContent::Thinking { text, .. } => {
 369                    add_message_content_part(
 370                        open_ai::MessagePart::Text { text: text },
 371                        message.role,
 372                        &mut messages,
 373                    )
 374                }
 375                MessageContent::RedactedThinking(_) => {}
 376                MessageContent::Image(image) => {
 377                    add_message_content_part(
 378                        open_ai::MessagePart::Image {
 379                            image_url: ImageUrl {
 380                                url: image.to_base64_url(),
 381                                detail: None,
 382                            },
 383                        },
 384                        message.role,
 385                        &mut messages,
 386                    );
 387                }
 388                MessageContent::ToolUse(tool_use) => {
 389                    let tool_call = open_ai::ToolCall {
 390                        id: tool_use.id.to_string(),
 391                        content: open_ai::ToolCallContent::Function {
 392                            function: open_ai::FunctionContent {
 393                                name: tool_use.name.to_string(),
 394                                arguments: serde_json::to_string(&tool_use.input)
 395                                    .unwrap_or_default(),
 396                            },
 397                        },
 398                    };
 399
 400                    if let Some(open_ai::RequestMessage::Assistant { tool_calls, .. }) =
 401                        messages.last_mut()
 402                    {
 403                        tool_calls.push(tool_call);
 404                    } else {
 405                        messages.push(open_ai::RequestMessage::Assistant {
 406                            content: None,
 407                            tool_calls: vec![tool_call],
 408                        });
 409                    }
 410                }
 411                MessageContent::ToolResult(tool_result) => {
 412                    let content = match &tool_result.content {
 413                        LanguageModelToolResultContent::Text(text) => {
 414                            vec![open_ai::MessagePart::Text {
 415                                text: text.to_string(),
 416                            }]
 417                        }
 418                        LanguageModelToolResultContent::Image(image) => {
 419                            vec![open_ai::MessagePart::Image {
 420                                image_url: ImageUrl {
 421                                    url: image.to_base64_url(),
 422                                    detail: None,
 423                                },
 424                            }]
 425                        }
 426                    };
 427
 428                    messages.push(open_ai::RequestMessage::Tool {
 429                        content: content.into(),
 430                        tool_call_id: tool_result.tool_use_id.to_string(),
 431                    });
 432                }
 433            }
 434        }
 435    }
 436
 437    open_ai::Request {
 438        model: model.id().into(),
 439        messages,
 440        stream,
 441        stop: request.stop,
 442        temperature: request.temperature.unwrap_or(1.0),
 443        max_completion_tokens: max_output_tokens,
 444        parallel_tool_calls: if model.supports_parallel_tool_calls() && !request.tools.is_empty() {
 445            // Disable parallel tool calls, as the Agent currently expects a maximum of one per turn.
 446            Some(false)
 447        } else {
 448            None
 449        },
 450        tools: request
 451            .tools
 452            .into_iter()
 453            .map(|tool| open_ai::ToolDefinition::Function {
 454                function: open_ai::FunctionDefinition {
 455                    name: tool.name,
 456                    description: Some(tool.description),
 457                    parameters: Some(tool.input_schema),
 458                },
 459            })
 460            .collect(),
 461        tool_choice: request.tool_choice.map(|choice| match choice {
 462            LanguageModelToolChoice::Auto => open_ai::ToolChoice::Auto,
 463            LanguageModelToolChoice::Any => open_ai::ToolChoice::Required,
 464            LanguageModelToolChoice::None => open_ai::ToolChoice::None,
 465        }),
 466    }
 467}
 468
 469fn add_message_content_part(
 470    new_part: open_ai::MessagePart,
 471    role: Role,
 472    messages: &mut Vec<open_ai::RequestMessage>,
 473) {
 474    match (role, messages.last_mut()) {
 475        (Role::User, Some(open_ai::RequestMessage::User { content }))
 476        | (
 477            Role::Assistant,
 478            Some(open_ai::RequestMessage::Assistant {
 479                content: Some(content),
 480                ..
 481            }),
 482        )
 483        | (Role::System, Some(open_ai::RequestMessage::System { content, .. })) => {
 484            content.push_part(new_part);
 485        }
 486        _ => {
 487            messages.push(match role {
 488                Role::User => open_ai::RequestMessage::User {
 489                    content: open_ai::MessageContent::from(vec![new_part]),
 490                },
 491                Role::Assistant => open_ai::RequestMessage::Assistant {
 492                    content: Some(open_ai::MessageContent::from(vec![new_part])),
 493                    tool_calls: Vec::new(),
 494                },
 495                Role::System => open_ai::RequestMessage::System {
 496                    content: open_ai::MessageContent::from(vec![new_part]),
 497                },
 498            });
 499        }
 500    }
 501}
 502
 503pub struct OpenAiEventMapper {
 504    tool_calls_by_index: HashMap<usize, RawToolCall>,
 505}
 506
 507impl OpenAiEventMapper {
 508    pub fn new() -> Self {
 509        Self {
 510            tool_calls_by_index: HashMap::default(),
 511        }
 512    }
 513
 514    pub fn map_stream(
 515        mut self,
 516        events: Pin<Box<dyn Send + Stream<Item = Result<ResponseStreamEvent>>>>,
 517    ) -> impl Stream<Item = Result<LanguageModelCompletionEvent, LanguageModelCompletionError>>
 518    {
 519        events.flat_map(move |event| {
 520            futures::stream::iter(match event {
 521                Ok(event) => self.map_event(event),
 522                Err(error) => vec![Err(LanguageModelCompletionError::Other(anyhow!(error)))],
 523            })
 524        })
 525    }
 526
 527    pub fn map_event(
 528        &mut self,
 529        event: ResponseStreamEvent,
 530    ) -> Vec<Result<LanguageModelCompletionEvent, LanguageModelCompletionError>> {
 531        let Some(choice) = event.choices.first() else {
 532            return vec![Err(LanguageModelCompletionError::Other(anyhow!(
 533                "Response contained no choices"
 534            )))];
 535        };
 536
 537        let mut events = Vec::new();
 538        if let Some(content) = choice.delta.content.clone() {
 539            events.push(Ok(LanguageModelCompletionEvent::Text(content)));
 540        }
 541
 542        if let Some(tool_calls) = choice.delta.tool_calls.as_ref() {
 543            for tool_call in tool_calls {
 544                let entry = self.tool_calls_by_index.entry(tool_call.index).or_default();
 545
 546                if let Some(tool_id) = tool_call.id.clone() {
 547                    entry.id = tool_id;
 548                }
 549
 550                if let Some(function) = tool_call.function.as_ref() {
 551                    if let Some(name) = function.name.clone() {
 552                        entry.name = name;
 553                    }
 554
 555                    if let Some(arguments) = function.arguments.clone() {
 556                        entry.arguments.push_str(&arguments);
 557                    }
 558                }
 559            }
 560        }
 561
 562        match choice.finish_reason.as_deref() {
 563            Some("stop") => {
 564                events.push(Ok(LanguageModelCompletionEvent::Stop(StopReason::EndTurn)));
 565            }
 566            Some("tool_calls") => {
 567                events.extend(self.tool_calls_by_index.drain().map(|(_, tool_call)| {
 568                    match serde_json::Value::from_str(&tool_call.arguments) {
 569                        Ok(input) => Ok(LanguageModelCompletionEvent::ToolUse(
 570                            LanguageModelToolUse {
 571                                id: tool_call.id.clone().into(),
 572                                name: tool_call.name.as_str().into(),
 573                                is_input_complete: true,
 574                                input,
 575                                raw_input: tool_call.arguments.clone(),
 576                            },
 577                        )),
 578                        Err(error) => Err(LanguageModelCompletionError::BadInputJson {
 579                            id: tool_call.id.into(),
 580                            tool_name: tool_call.name.as_str().into(),
 581                            raw_input: tool_call.arguments.into(),
 582                            json_parse_error: error.to_string(),
 583                        }),
 584                    }
 585                }));
 586
 587                events.push(Ok(LanguageModelCompletionEvent::Stop(StopReason::ToolUse)));
 588            }
 589            Some(stop_reason) => {
 590                log::error!("Unexpected OpenAI stop_reason: {stop_reason:?}",);
 591                events.push(Ok(LanguageModelCompletionEvent::Stop(StopReason::EndTurn)));
 592            }
 593            None => {}
 594        }
 595
 596        events
 597    }
 598}
 599
 600#[derive(Default)]
 601struct RawToolCall {
 602    id: String,
 603    name: String,
 604    arguments: String,
 605}
 606
 607pub fn count_open_ai_tokens(
 608    request: LanguageModelRequest,
 609    model: Model,
 610    cx: &App,
 611) -> BoxFuture<'static, Result<u64>> {
 612    cx.background_spawn(async move {
 613        let messages = request
 614            .messages
 615            .into_iter()
 616            .map(|message| tiktoken_rs::ChatCompletionRequestMessage {
 617                role: match message.role {
 618                    Role::User => "user".into(),
 619                    Role::Assistant => "assistant".into(),
 620                    Role::System => "system".into(),
 621                },
 622                content: Some(message.string_contents()),
 623                name: None,
 624                function_call: None,
 625            })
 626            .collect::<Vec<_>>();
 627
 628        match model {
 629            Model::Custom { max_tokens, .. } => {
 630                let model = if max_tokens >= 100_000 {
 631                    // If the max tokens is 100k or more, it is likely the o200k_base tokenizer from gpt4o
 632                    "gpt-4o"
 633                } else {
 634                    // Otherwise fallback to gpt-4, since only cl100k_base and o200k_base are
 635                    // supported with this tiktoken method
 636                    "gpt-4"
 637                };
 638                tiktoken_rs::num_tokens_from_messages(model, &messages)
 639            }
 640            // Currently supported by tiktoken_rs
 641            // Sometimes tiktoken-rs is behind on model support. If that is the case, make a new branch
 642            // arm with an override. We enumerate all supported models here so that we can check if new
 643            // models are supported yet or not.
 644            Model::ThreePointFiveTurbo
 645            | Model::Four
 646            | Model::FourTurbo
 647            | Model::FourOmni
 648            | Model::FourOmniMini
 649            | Model::FourPointOne
 650            | Model::FourPointOneMini
 651            | Model::FourPointOneNano
 652            | Model::O1
 653            | Model::O3
 654            | Model::O3Mini
 655            | Model::O4Mini => tiktoken_rs::num_tokens_from_messages(model.id(), &messages),
 656        }
 657        .map(|tokens| tokens as u64)
 658    })
 659    .boxed()
 660}
 661
 662struct ConfigurationView {
 663    api_key_editor: Entity<SingleLineInput>,
 664    api_url_editor: Entity<SingleLineInput>,
 665    state: gpui::Entity<State>,
 666    load_credentials_task: Option<Task<()>>,
 667}
 668
 669impl ConfigurationView {
 670    fn new(state: gpui::Entity<State>, window: &mut Window, cx: &mut Context<Self>) -> Self {
 671        let api_key_editor = cx.new(|cx| {
 672            SingleLineInput::new(
 673                window,
 674                cx,
 675                "sk-000000000000000000000000000000000000000000000000",
 676            )
 677            .label("API key")
 678        });
 679
 680        let api_url = AllLanguageModelSettings::get_global(cx)
 681            .openai
 682            .api_url
 683            .clone();
 684
 685        let api_url_editor = cx.new(|cx| {
 686            let input = SingleLineInput::new(window, cx, open_ai::OPEN_AI_API_URL).label("API URL");
 687
 688            if !api_url.is_empty() {
 689                input.editor.update(cx, |editor, cx| {
 690                    editor.set_text(&*api_url, window, cx);
 691                });
 692            }
 693            input
 694        });
 695
 696        cx.observe(&state, |_, _, cx| {
 697            cx.notify();
 698        })
 699        .detach();
 700
 701        let load_credentials_task = Some(cx.spawn_in(window, {
 702            let state = state.clone();
 703            async move |this, cx| {
 704                if let Some(task) = state
 705                    .update(cx, |state, cx| state.authenticate(cx))
 706                    .log_err()
 707                {
 708                    // We don't log an error, because "not signed in" is also an error.
 709                    let _ = task.await;
 710                }
 711                this.update(cx, |this, cx| {
 712                    this.load_credentials_task = None;
 713                    cx.notify();
 714                })
 715                .log_err();
 716            }
 717        }));
 718
 719        Self {
 720            api_key_editor,
 721            api_url_editor,
 722            state,
 723            load_credentials_task,
 724        }
 725    }
 726
 727    fn save_api_key(&mut self, _: &menu::Confirm, window: &mut Window, cx: &mut Context<Self>) {
 728        let api_key = self
 729            .api_key_editor
 730            .read(cx)
 731            .editor()
 732            .read(cx)
 733            .text(cx)
 734            .trim()
 735            .to_string();
 736
 737        // Don't proceed if no API key is provided and we're not authenticated
 738        if api_key.is_empty() && !self.state.read(cx).is_authenticated() {
 739            return;
 740        }
 741
 742        let state = self.state.clone();
 743        cx.spawn_in(window, async move |_, cx| {
 744            state
 745                .update(cx, |state, cx| state.set_api_key(api_key, cx))?
 746                .await
 747        })
 748        .detach_and_log_err(cx);
 749
 750        cx.notify();
 751    }
 752
 753    fn reset_api_key(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 754        self.api_key_editor.update(cx, |input, cx| {
 755            input.editor.update(cx, |editor, cx| {
 756                editor.set_text("", window, cx);
 757            });
 758        });
 759
 760        let state = self.state.clone();
 761        cx.spawn_in(window, async move |_, cx| {
 762            state.update(cx, |state, cx| state.reset_api_key(cx))?.await
 763        })
 764        .detach_and_log_err(cx);
 765
 766        cx.notify();
 767    }
 768
 769    fn save_api_url(&mut self, cx: &mut Context<Self>) {
 770        let api_url = self
 771            .api_url_editor
 772            .read(cx)
 773            .editor()
 774            .read(cx)
 775            .text(cx)
 776            .trim()
 777            .to_string();
 778
 779        let current_url = AllLanguageModelSettings::get_global(cx)
 780            .openai
 781            .api_url
 782            .clone();
 783
 784        let effective_current_url = if current_url.is_empty() {
 785            open_ai::OPEN_AI_API_URL
 786        } else {
 787            &current_url
 788        };
 789
 790        if !api_url.is_empty() && api_url != effective_current_url {
 791            let fs = <dyn Fs>::global(cx);
 792            update_settings_file::<AllLanguageModelSettings>(fs, cx, move |settings, _| {
 793                use crate::settings::{OpenAiSettingsContent, VersionedOpenAiSettingsContent};
 794
 795                if settings.openai.is_none() {
 796                    settings.openai = Some(OpenAiSettingsContent::Versioned(
 797                        VersionedOpenAiSettingsContent::V1(
 798                            crate::settings::OpenAiSettingsContentV1 {
 799                                api_url: Some(api_url.clone()),
 800                                available_models: None,
 801                            },
 802                        ),
 803                    ));
 804                } else {
 805                    if let Some(openai) = settings.openai.as_mut() {
 806                        match openai {
 807                            OpenAiSettingsContent::Versioned(versioned) => match versioned {
 808                                VersionedOpenAiSettingsContent::V1(v1) => {
 809                                    v1.api_url = Some(api_url.clone());
 810                                }
 811                            },
 812                            OpenAiSettingsContent::Legacy(legacy) => {
 813                                legacy.api_url = Some(api_url.clone());
 814                            }
 815                        }
 816                    }
 817                }
 818            });
 819        }
 820    }
 821
 822    fn reset_api_url(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 823        self.api_url_editor.update(cx, |input, cx| {
 824            input.editor.update(cx, |editor, cx| {
 825                editor.set_text("", window, cx);
 826            });
 827        });
 828        let fs = <dyn Fs>::global(cx);
 829        update_settings_file::<AllLanguageModelSettings>(fs, cx, |settings, _cx| {
 830            use crate::settings::{OpenAiSettingsContent, VersionedOpenAiSettingsContent};
 831
 832            if let Some(openai) = settings.openai.as_mut() {
 833                match openai {
 834                    OpenAiSettingsContent::Versioned(versioned) => match versioned {
 835                        VersionedOpenAiSettingsContent::V1(v1) => {
 836                            v1.api_url = None;
 837                        }
 838                    },
 839                    OpenAiSettingsContent::Legacy(legacy) => {
 840                        legacy.api_url = None;
 841                    }
 842                }
 843            }
 844        });
 845        cx.notify();
 846    }
 847
 848    fn should_render_editor(&self, cx: &mut Context<Self>) -> bool {
 849        !self.state.read(cx).is_authenticated()
 850    }
 851}
 852
 853impl Render for ConfigurationView {
 854    fn render(&mut self, _: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
 855        let env_var_set = self.state.read(cx).api_key_from_env;
 856
 857        let api_key_section = if self.should_render_editor(cx) {
 858            v_flex()
 859                .on_action(cx.listener(Self::save_api_key))
 860
 861                .child(Label::new("To use Zed's assistant with OpenAI, you need to add an API key. Follow these steps:"))
 862                .child(
 863                    List::new()
 864                        .child(InstructionListItem::new(
 865                            "Create one by visiting",
 866                            Some("OpenAI's console"),
 867                            Some("https://platform.openai.com/api-keys"),
 868                        ))
 869                        .child(InstructionListItem::text_only(
 870                            "Ensure your OpenAI account has credits",
 871                        ))
 872                        .child(InstructionListItem::text_only(
 873                            "Paste your API key below and hit enter to start using the assistant",
 874                        )),
 875                )
 876                .child(self.api_key_editor.clone())
 877                .child(
 878                    Label::new(
 879                        format!("You can also assign the {OPENAI_API_KEY_VAR} environment variable and restart Zed."),
 880                    )
 881                    .size(LabelSize::Small).color(Color::Muted),
 882                )
 883                .child(
 884                    Label::new(
 885                        "Note that having a subscription for another service like GitHub Copilot won't work.",
 886                    )
 887                    .size(LabelSize::Small).color(Color::Muted),
 888                )
 889                .into_any()
 890        } else {
 891            h_flex()
 892                .mt_1()
 893                .p_1()
 894                .justify_between()
 895                .rounded_md()
 896                .border_1()
 897                .border_color(cx.theme().colors().border)
 898                .bg(cx.theme().colors().background)
 899                .child(
 900                    h_flex()
 901                        .gap_1()
 902                        .child(Icon::new(IconName::Check).color(Color::Success))
 903                        .child(Label::new(if env_var_set {
 904                            format!("API key set in {OPENAI_API_KEY_VAR} environment variable.")
 905                        } else {
 906                            "API key configured.".to_string()
 907                        })),
 908                )
 909                .child(
 910                    Button::new("reset-key", "Reset API Key")
 911                        .label_size(LabelSize::Small)
 912                        .icon(IconName::Undo)
 913                        .icon_size(IconSize::Small)
 914                        .icon_position(IconPosition::Start)
 915                        .layer(ElevationIndex::ModalSurface)
 916                        .when(env_var_set, |this| {
 917                            this.tooltip(Tooltip::text(format!("To reset your API key, unset the {OPENAI_API_KEY_VAR} environment variable.")))
 918                        })
 919                        .on_click(cx.listener(|this, _, window, cx| this.reset_api_key(window, cx))),
 920                )
 921                .into_any()
 922        };
 923
 924        let custom_api_url_set =
 925            AllLanguageModelSettings::get_global(cx).openai.api_url != open_ai::OPEN_AI_API_URL;
 926
 927        let api_url_section = if custom_api_url_set {
 928            h_flex()
 929                .mt_1()
 930                .p_1()
 931                .justify_between()
 932                .rounded_md()
 933                .border_1()
 934                .border_color(cx.theme().colors().border)
 935                .bg(cx.theme().colors().background)
 936                .child(
 937                    h_flex()
 938                        .gap_1()
 939                        .child(Icon::new(IconName::Check).color(Color::Success))
 940                        .child(Label::new("Custom API URL configured.")),
 941                )
 942                .child(
 943                    Button::new("reset-key", "Reset API URL")
 944                        .label_size(LabelSize::Small)
 945                        .icon(IconName::Undo)
 946                        .icon_size(IconSize::Small)
 947                        .icon_position(IconPosition::Start)
 948                        .layer(ElevationIndex::ModalSurface)
 949                        .on_click(
 950                            cx.listener(|this, _, window, cx| this.reset_api_url(window, cx)),
 951                        ),
 952                )
 953                .into_any()
 954        } else {
 955            v_flex()
 956                .on_action(cx.listener(|this, _: &menu::Confirm, _window, cx| {
 957                    this.save_api_url(cx);
 958                    cx.notify();
 959                }))
 960                .mt_2()
 961                .pt_2()
 962                .border_t_1()
 963                .border_color(cx.theme().colors().border_variant)
 964                .gap_1()
 965                .child(
 966                    List::new()
 967                        .child(InstructionListItem::text_only(
 968                            "Optionally, you can change the base URL for the OpenAI API request.",
 969                        ))
 970                        .child(InstructionListItem::text_only(
 971                            "Paste the new API endpoint below and hit enter",
 972                        )),
 973                )
 974                .child(self.api_url_editor.clone())
 975                .into_any()
 976        };
 977
 978        if self.load_credentials_task.is_some() {
 979            div().child(Label::new("Loading credentials…")).into_any()
 980        } else {
 981            v_flex()
 982                .size_full()
 983                .child(api_key_section)
 984                .child(api_url_section)
 985                .into_any()
 986        }
 987    }
 988}
 989
 990#[cfg(test)]
 991mod tests {
 992    use gpui::TestAppContext;
 993    use language_model::LanguageModelRequestMessage;
 994
 995    use super::*;
 996
 997    #[gpui::test]
 998    fn tiktoken_rs_support(cx: &TestAppContext) {
 999        let request = LanguageModelRequest {
1000            thread_id: None,
1001            prompt_id: None,
1002            intent: None,
1003            mode: None,
1004            messages: vec![LanguageModelRequestMessage {
1005                role: Role::User,
1006                content: vec![MessageContent::Text("message".into())],
1007                cache: false,
1008            }],
1009            tools: vec![],
1010            tool_choice: None,
1011            stop: vec![],
1012            temperature: None,
1013        };
1014
1015        // Validate that all models are supported by tiktoken-rs
1016        for model in Model::iter() {
1017            let count = cx
1018                .executor()
1019                .block(count_open_ai_tokens(
1020                    request.clone(),
1021                    model,
1022                    &cx.app.borrow(),
1023                ))
1024                .unwrap();
1025            assert!(count > 0);
1026        }
1027    }
1028}