google.rs

  1use anyhow::{Context as _, Result, anyhow};
  2use collections::BTreeMap;
  3use credentials_provider::CredentialsProvider;
  4use editor::{Editor, EditorElement, EditorStyle};
  5use futures::{FutureExt, Stream, StreamExt, future::BoxFuture};
  6use google_ai::{
  7    FunctionDeclaration, GenerateContentResponse, GoogleModelMode, Part, SystemInstruction,
  8    ThinkingConfig, UsageMetadata,
  9};
 10use gpui::{
 11    AnyView, App, AsyncApp, Context, Entity, FontStyle, Subscription, Task, TextStyle, WhiteSpace,
 12};
 13use http_client::HttpClient;
 14use language_model::{
 15    AuthenticateError, LanguageModelCompletionError, LanguageModelCompletionEvent,
 16    LanguageModelToolChoice, LanguageModelToolSchemaFormat, LanguageModelToolUse,
 17    LanguageModelToolUseId, MessageContent, StopReason,
 18};
 19use language_model::{
 20    LanguageModel, LanguageModelId, LanguageModelName, LanguageModelProvider,
 21    LanguageModelProviderId, LanguageModelProviderName, LanguageModelProviderState,
 22    LanguageModelRequest, RateLimiter, Role,
 23};
 24use schemars::JsonSchema;
 25use serde::{Deserialize, Serialize};
 26use settings::{Settings, SettingsStore};
 27use std::pin::Pin;
 28use std::sync::{
 29    Arc,
 30    atomic::{self, AtomicU64},
 31};
 32use strum::IntoEnumIterator;
 33use theme::ThemeSettings;
 34use ui::{Icon, IconName, List, Tooltip, prelude::*};
 35use util::ResultExt;
 36
 37use crate::AllLanguageModelSettings;
 38use crate::ui::InstructionListItem;
 39
 40const PROVIDER_ID: LanguageModelProviderId = language_model::GOOGLE_PROVIDER_ID;
 41const PROVIDER_NAME: LanguageModelProviderName = language_model::GOOGLE_PROVIDER_NAME;
 42
 43#[derive(Default, Clone, Debug, PartialEq)]
 44pub struct GoogleSettings {
 45    pub api_url: String,
 46    pub available_models: Vec<AvailableModel>,
 47}
 48
 49#[derive(Clone, Copy, Debug, Default, PartialEq, Serialize, Deserialize, JsonSchema)]
 50#[serde(tag = "type", rename_all = "lowercase")]
 51pub enum ModelMode {
 52    #[default]
 53    Default,
 54    Thinking {
 55        /// The maximum number of tokens to use for reasoning. Must be lower than the model's `max_output_tokens`.
 56        budget_tokens: Option<u32>,
 57    },
 58}
 59
 60impl From<ModelMode> for GoogleModelMode {
 61    fn from(value: ModelMode) -> Self {
 62        match value {
 63            ModelMode::Default => GoogleModelMode::Default,
 64            ModelMode::Thinking { budget_tokens } => GoogleModelMode::Thinking { budget_tokens },
 65        }
 66    }
 67}
 68
 69impl From<GoogleModelMode> for ModelMode {
 70    fn from(value: GoogleModelMode) -> Self {
 71        match value {
 72            GoogleModelMode::Default => ModelMode::Default,
 73            GoogleModelMode::Thinking { budget_tokens } => ModelMode::Thinking { budget_tokens },
 74        }
 75    }
 76}
 77
 78#[derive(Clone, Debug, PartialEq, Serialize, Deserialize, JsonSchema)]
 79pub struct AvailableModel {
 80    name: String,
 81    display_name: Option<String>,
 82    max_tokens: u64,
 83    mode: Option<ModelMode>,
 84}
 85
 86pub struct GoogleLanguageModelProvider {
 87    http_client: Arc<dyn HttpClient>,
 88    state: gpui::Entity<State>,
 89}
 90
 91pub struct State {
 92    api_key: Option<String>,
 93    api_key_from_env: bool,
 94    _subscription: Subscription,
 95}
 96
 97const GEMINI_API_KEY_VAR: &str = "GEMINI_API_KEY";
 98const GOOGLE_AI_API_KEY_VAR: &str = "GOOGLE_AI_API_KEY";
 99
100impl State {
101    fn is_authenticated(&self) -> bool {
102        self.api_key.is_some()
103    }
104
105    fn reset_api_key(&self, cx: &mut Context<Self>) -> Task<Result<()>> {
106        let credentials_provider = <dyn CredentialsProvider>::global(cx);
107        let api_url = AllLanguageModelSettings::get_global(cx)
108            .google
109            .api_url
110            .clone();
111        cx.spawn(async move |this, cx| {
112            credentials_provider
113                .delete_credentials(&api_url, &cx)
114                .await
115                .log_err();
116            this.update(cx, |this, cx| {
117                this.api_key = None;
118                this.api_key_from_env = false;
119                cx.notify();
120            })
121        })
122    }
123
124    fn set_api_key(&mut self, api_key: String, cx: &mut Context<Self>) -> Task<Result<()>> {
125        let credentials_provider = <dyn CredentialsProvider>::global(cx);
126        let api_url = AllLanguageModelSettings::get_global(cx)
127            .google
128            .api_url
129            .clone();
130        cx.spawn(async move |this, cx| {
131            credentials_provider
132                .write_credentials(&api_url, "Bearer", api_key.as_bytes(), &cx)
133                .await?;
134            this.update(cx, |this, cx| {
135                this.api_key = Some(api_key);
136                cx.notify();
137            })
138        })
139    }
140
141    fn authenticate(&self, cx: &mut Context<Self>) -> Task<Result<(), AuthenticateError>> {
142        if self.is_authenticated() {
143            return Task::ready(Ok(()));
144        }
145
146        let credentials_provider = <dyn CredentialsProvider>::global(cx);
147        let api_url = AllLanguageModelSettings::get_global(cx)
148            .google
149            .api_url
150            .clone();
151
152        cx.spawn(async move |this, cx| {
153            let (api_key, from_env) = if let Ok(api_key) = std::env::var(GOOGLE_AI_API_KEY_VAR) {
154                (api_key, true)
155            } else if let Ok(api_key) = std::env::var(GEMINI_API_KEY_VAR) {
156                (api_key, true)
157            } else {
158                let (_, api_key) = credentials_provider
159                    .read_credentials(&api_url, &cx)
160                    .await?
161                    .ok_or(AuthenticateError::CredentialsNotFound)?;
162                (
163                    String::from_utf8(api_key).context("invalid {PROVIDER_NAME} API key")?,
164                    false,
165                )
166            };
167
168            this.update(cx, |this, cx| {
169                this.api_key = Some(api_key);
170                this.api_key_from_env = from_env;
171                cx.notify();
172            })?;
173
174            Ok(())
175        })
176    }
177}
178
179impl GoogleLanguageModelProvider {
180    pub fn new(http_client: Arc<dyn HttpClient>, cx: &mut App) -> Self {
181        let state = cx.new(|cx| State {
182            api_key: None,
183            api_key_from_env: false,
184            _subscription: cx.observe_global::<SettingsStore>(|_, cx| {
185                cx.notify();
186            }),
187        });
188
189        Self { http_client, state }
190    }
191
192    fn create_language_model(&self, model: google_ai::Model) -> Arc<dyn LanguageModel> {
193        Arc::new(GoogleLanguageModel {
194            id: LanguageModelId::from(model.id().to_string()),
195            model,
196            state: self.state.clone(),
197            http_client: self.http_client.clone(),
198            request_limiter: RateLimiter::new(4),
199        })
200    }
201}
202
203impl LanguageModelProviderState for GoogleLanguageModelProvider {
204    type ObservableEntity = State;
205
206    fn observable_entity(&self) -> Option<gpui::Entity<Self::ObservableEntity>> {
207        Some(self.state.clone())
208    }
209}
210
211impl LanguageModelProvider for GoogleLanguageModelProvider {
212    fn id(&self) -> LanguageModelProviderId {
213        PROVIDER_ID
214    }
215
216    fn name(&self) -> LanguageModelProviderName {
217        PROVIDER_NAME
218    }
219
220    fn icon(&self) -> IconName {
221        IconName::AiGoogle
222    }
223
224    fn default_model(&self, _cx: &App) -> Option<Arc<dyn LanguageModel>> {
225        Some(self.create_language_model(google_ai::Model::default()))
226    }
227
228    fn default_fast_model(&self, _cx: &App) -> Option<Arc<dyn LanguageModel>> {
229        Some(self.create_language_model(google_ai::Model::default_fast()))
230    }
231
232    fn provided_models(&self, cx: &App) -> Vec<Arc<dyn LanguageModel>> {
233        let mut models = BTreeMap::default();
234
235        // Add base models from google_ai::Model::iter()
236        for model in google_ai::Model::iter() {
237            if !matches!(model, google_ai::Model::Custom { .. }) {
238                models.insert(model.id().to_string(), model);
239            }
240        }
241
242        // Override with available models from settings
243        for model in &AllLanguageModelSettings::get_global(cx)
244            .google
245            .available_models
246        {
247            models.insert(
248                model.name.clone(),
249                google_ai::Model::Custom {
250                    name: model.name.clone(),
251                    display_name: model.display_name.clone(),
252                    max_tokens: model.max_tokens,
253                    mode: model.mode.unwrap_or_default().into(),
254                },
255            );
256        }
257
258        models
259            .into_values()
260            .map(|model| {
261                Arc::new(GoogleLanguageModel {
262                    id: LanguageModelId::from(model.id().to_string()),
263                    model,
264                    state: self.state.clone(),
265                    http_client: self.http_client.clone(),
266                    request_limiter: RateLimiter::new(4),
267                }) as Arc<dyn LanguageModel>
268            })
269            .collect()
270    }
271
272    fn is_authenticated(&self, cx: &App) -> bool {
273        self.state.read(cx).is_authenticated()
274    }
275
276    fn authenticate(&self, cx: &mut App) -> Task<Result<(), AuthenticateError>> {
277        self.state.update(cx, |state, cx| state.authenticate(cx))
278    }
279
280    fn configuration_view(&self, window: &mut Window, cx: &mut App) -> AnyView {
281        cx.new(|cx| ConfigurationView::new(self.state.clone(), window, cx))
282            .into()
283    }
284
285    fn reset_credentials(&self, cx: &mut App) -> Task<Result<()>> {
286        self.state.update(cx, |state, cx| state.reset_api_key(cx))
287    }
288}
289
290pub struct GoogleLanguageModel {
291    id: LanguageModelId,
292    model: google_ai::Model,
293    state: gpui::Entity<State>,
294    http_client: Arc<dyn HttpClient>,
295    request_limiter: RateLimiter,
296}
297
298impl GoogleLanguageModel {
299    fn stream_completion(
300        &self,
301        request: google_ai::GenerateContentRequest,
302        cx: &AsyncApp,
303    ) -> BoxFuture<
304        'static,
305        Result<futures::stream::BoxStream<'static, Result<GenerateContentResponse>>>,
306    > {
307        let http_client = self.http_client.clone();
308
309        let Ok((api_key, api_url)) = cx.read_entity(&self.state, |state, cx| {
310            let settings = &AllLanguageModelSettings::get_global(cx).google;
311            (state.api_key.clone(), settings.api_url.clone())
312        }) else {
313            return futures::future::ready(Err(anyhow!("App state dropped"))).boxed();
314        };
315
316        async move {
317            let api_key = api_key.context("Missing Google API key")?;
318            let request = google_ai::stream_generate_content(
319                http_client.as_ref(),
320                &api_url,
321                &api_key,
322                request,
323            );
324            request.await.context("failed to stream completion")
325        }
326        .boxed()
327    }
328}
329
330impl LanguageModel for GoogleLanguageModel {
331    fn id(&self) -> LanguageModelId {
332        self.id.clone()
333    }
334
335    fn name(&self) -> LanguageModelName {
336        LanguageModelName::from(self.model.display_name().to_string())
337    }
338
339    fn provider_id(&self) -> LanguageModelProviderId {
340        PROVIDER_ID
341    }
342
343    fn provider_name(&self) -> LanguageModelProviderName {
344        PROVIDER_NAME
345    }
346
347    fn supports_tools(&self) -> bool {
348        self.model.supports_tools()
349    }
350
351    fn supports_images(&self) -> bool {
352        self.model.supports_images()
353    }
354
355    fn supports_tool_choice(&self, choice: LanguageModelToolChoice) -> bool {
356        match choice {
357            LanguageModelToolChoice::Auto
358            | LanguageModelToolChoice::Any
359            | LanguageModelToolChoice::None => true,
360        }
361    }
362
363    fn tool_input_format(&self) -> LanguageModelToolSchemaFormat {
364        LanguageModelToolSchemaFormat::JsonSchemaSubset
365    }
366
367    fn telemetry_id(&self) -> String {
368        format!("google/{}", self.model.request_id())
369    }
370
371    fn max_token_count(&self) -> u64 {
372        self.model.max_token_count()
373    }
374
375    fn max_output_tokens(&self) -> Option<u64> {
376        self.model.max_output_tokens()
377    }
378
379    fn count_tokens(
380        &self,
381        request: LanguageModelRequest,
382        cx: &App,
383    ) -> BoxFuture<'static, Result<u64>> {
384        let model_id = self.model.request_id().to_string();
385        let request = into_google(request, model_id.clone(), self.model.mode());
386        let http_client = self.http_client.clone();
387        let api_key = self.state.read(cx).api_key.clone();
388
389        let settings = &AllLanguageModelSettings::get_global(cx).google;
390        let api_url = settings.api_url.clone();
391
392        async move {
393            let api_key = api_key.context("Missing Google API key")?;
394            let response = google_ai::count_tokens(
395                http_client.as_ref(),
396                &api_url,
397                &api_key,
398                google_ai::CountTokensRequest {
399                    generate_content_request: request,
400                },
401            )
402            .await?;
403            Ok(response.total_tokens)
404        }
405        .boxed()
406    }
407
408    fn stream_completion(
409        &self,
410        request: LanguageModelRequest,
411        cx: &AsyncApp,
412    ) -> BoxFuture<
413        'static,
414        Result<
415            futures::stream::BoxStream<
416                'static,
417                Result<LanguageModelCompletionEvent, LanguageModelCompletionError>,
418            >,
419            LanguageModelCompletionError,
420        >,
421    > {
422        let request = into_google(
423            request,
424            self.model.request_id().to_string(),
425            self.model.mode(),
426        );
427        let request = self.stream_completion(request, cx);
428        let future = self.request_limiter.stream(async move {
429            let response = request.await.map_err(LanguageModelCompletionError::from)?;
430            Ok(GoogleEventMapper::new().map_stream(response))
431        });
432        async move { Ok(future.await?.boxed()) }.boxed()
433    }
434}
435
436pub fn into_google(
437    mut request: LanguageModelRequest,
438    model_id: String,
439    mode: GoogleModelMode,
440) -> google_ai::GenerateContentRequest {
441    fn map_content(content: Vec<MessageContent>) -> Vec<Part> {
442        content
443            .into_iter()
444            .flat_map(|content| match content {
445                language_model::MessageContent::Text(text) => {
446                    if !text.is_empty() {
447                        vec![Part::TextPart(google_ai::TextPart { text })]
448                    } else {
449                        vec![]
450                    }
451                }
452                language_model::MessageContent::Thinking {
453                    text: _,
454                    signature: Some(signature),
455                } => {
456                    if !signature.is_empty() {
457                        vec![Part::ThoughtPart(google_ai::ThoughtPart {
458                            thought: true,
459                            thought_signature: signature,
460                        })]
461                    } else {
462                        vec![]
463                    }
464                }
465                language_model::MessageContent::Thinking { .. } => {
466                    vec![]
467                }
468                language_model::MessageContent::RedactedThinking(_) => vec![],
469                language_model::MessageContent::Image(image) => {
470                    vec![Part::InlineDataPart(google_ai::InlineDataPart {
471                        inline_data: google_ai::GenerativeContentBlob {
472                            mime_type: "image/png".to_string(),
473                            data: image.source.to_string(),
474                        },
475                    })]
476                }
477                language_model::MessageContent::ToolUse(tool_use) => {
478                    vec![Part::FunctionCallPart(google_ai::FunctionCallPart {
479                        function_call: google_ai::FunctionCall {
480                            name: tool_use.name.to_string(),
481                            args: tool_use.input,
482                        },
483                    })]
484                }
485                language_model::MessageContent::ToolResult(tool_result) => {
486                    match tool_result.content {
487                        language_model::LanguageModelToolResultContent::Text(text) => {
488                            vec![Part::FunctionResponsePart(
489                                google_ai::FunctionResponsePart {
490                                    function_response: google_ai::FunctionResponse {
491                                        name: tool_result.tool_name.to_string(),
492                                        // The API expects a valid JSON object
493                                        response: serde_json::json!({
494                                            "output": text
495                                        }),
496                                    },
497                                },
498                            )]
499                        }
500                        language_model::LanguageModelToolResultContent::Image(image) => {
501                            vec![
502                                Part::FunctionResponsePart(google_ai::FunctionResponsePart {
503                                    function_response: google_ai::FunctionResponse {
504                                        name: tool_result.tool_name.to_string(),
505                                        // The API expects a valid JSON object
506                                        response: serde_json::json!({
507                                            "output": "Tool responded with an image"
508                                        }),
509                                    },
510                                }),
511                                Part::InlineDataPart(google_ai::InlineDataPart {
512                                    inline_data: google_ai::GenerativeContentBlob {
513                                        mime_type: "image/png".to_string(),
514                                        data: image.source.to_string(),
515                                    },
516                                }),
517                            ]
518                        }
519                    }
520                }
521            })
522            .collect()
523    }
524
525    let system_instructions = if request
526        .messages
527        .first()
528        .map_or(false, |msg| matches!(msg.role, Role::System))
529    {
530        let message = request.messages.remove(0);
531        Some(SystemInstruction {
532            parts: map_content(message.content),
533        })
534    } else {
535        None
536    };
537
538    google_ai::GenerateContentRequest {
539        model: google_ai::ModelName { model_id },
540        system_instruction: system_instructions,
541        contents: request
542            .messages
543            .into_iter()
544            .filter_map(|message| {
545                let parts = map_content(message.content);
546                if parts.is_empty() {
547                    None
548                } else {
549                    Some(google_ai::Content {
550                        parts,
551                        role: match message.role {
552                            Role::User => google_ai::Role::User,
553                            Role::Assistant => google_ai::Role::Model,
554                            Role::System => google_ai::Role::User, // Google AI doesn't have a system role
555                        },
556                    })
557                }
558            })
559            .collect(),
560        generation_config: Some(google_ai::GenerationConfig {
561            candidate_count: Some(1),
562            stop_sequences: Some(request.stop),
563            max_output_tokens: None,
564            temperature: request.temperature.map(|t| t as f64).or(Some(1.0)),
565            thinking_config: match (request.thinking_allowed, mode) {
566                (true, GoogleModelMode::Thinking { budget_tokens }) => {
567                    budget_tokens.map(|thinking_budget| ThinkingConfig { thinking_budget })
568                }
569                _ => None,
570            },
571            top_p: None,
572            top_k: None,
573        }),
574        safety_settings: None,
575        tools: (request.tools.len() > 0).then(|| {
576            vec![google_ai::Tool {
577                function_declarations: request
578                    .tools
579                    .into_iter()
580                    .map(|tool| FunctionDeclaration {
581                        name: tool.name,
582                        description: tool.description,
583                        parameters: tool.input_schema,
584                    })
585                    .collect(),
586            }]
587        }),
588        tool_config: request.tool_choice.map(|choice| google_ai::ToolConfig {
589            function_calling_config: google_ai::FunctionCallingConfig {
590                mode: match choice {
591                    LanguageModelToolChoice::Auto => google_ai::FunctionCallingMode::Auto,
592                    LanguageModelToolChoice::Any => google_ai::FunctionCallingMode::Any,
593                    LanguageModelToolChoice::None => google_ai::FunctionCallingMode::None,
594                },
595                allowed_function_names: None,
596            },
597        }),
598    }
599}
600
601pub struct GoogleEventMapper {
602    usage: UsageMetadata,
603    stop_reason: StopReason,
604}
605
606impl GoogleEventMapper {
607    pub fn new() -> Self {
608        Self {
609            usage: UsageMetadata::default(),
610            stop_reason: StopReason::EndTurn,
611        }
612    }
613
614    pub fn map_stream(
615        mut self,
616        events: Pin<Box<dyn Send + Stream<Item = Result<GenerateContentResponse>>>>,
617    ) -> impl Stream<Item = Result<LanguageModelCompletionEvent, LanguageModelCompletionError>>
618    {
619        events
620            .map(Some)
621            .chain(futures::stream::once(async { None }))
622            .flat_map(move |event| {
623                futures::stream::iter(match event {
624                    Some(Ok(event)) => self.map_event(event),
625                    Some(Err(error)) => {
626                        vec![Err(LanguageModelCompletionError::from(error))]
627                    }
628                    None => vec![Ok(LanguageModelCompletionEvent::Stop(self.stop_reason))],
629                })
630            })
631    }
632
633    pub fn map_event(
634        &mut self,
635        event: GenerateContentResponse,
636    ) -> Vec<Result<LanguageModelCompletionEvent, LanguageModelCompletionError>> {
637        static TOOL_CALL_COUNTER: AtomicU64 = AtomicU64::new(0);
638
639        let mut events: Vec<_> = Vec::new();
640        let mut wants_to_use_tool = false;
641        if let Some(usage_metadata) = event.usage_metadata {
642            update_usage(&mut self.usage, &usage_metadata);
643            events.push(Ok(LanguageModelCompletionEvent::UsageUpdate(
644                convert_usage(&self.usage),
645            )))
646        }
647        if let Some(candidates) = event.candidates {
648            for candidate in candidates {
649                if let Some(finish_reason) = candidate.finish_reason.as_deref() {
650                    self.stop_reason = match finish_reason {
651                        "STOP" => StopReason::EndTurn,
652                        "MAX_TOKENS" => StopReason::MaxTokens,
653                        _ => {
654                            log::error!("Unexpected google finish_reason: {finish_reason}");
655                            StopReason::EndTurn
656                        }
657                    };
658                }
659                candidate
660                    .content
661                    .parts
662                    .into_iter()
663                    .for_each(|part| match part {
664                        Part::TextPart(text_part) => {
665                            events.push(Ok(LanguageModelCompletionEvent::Text(text_part.text)))
666                        }
667                        Part::InlineDataPart(_) => {}
668                        Part::FunctionCallPart(function_call_part) => {
669                            wants_to_use_tool = true;
670                            let name: Arc<str> = function_call_part.function_call.name.into();
671                            let next_tool_id =
672                                TOOL_CALL_COUNTER.fetch_add(1, atomic::Ordering::SeqCst);
673                            let id: LanguageModelToolUseId =
674                                format!("{}-{}", name, next_tool_id).into();
675
676                            events.push(Ok(LanguageModelCompletionEvent::ToolUse(
677                                LanguageModelToolUse {
678                                    id,
679                                    name,
680                                    is_input_complete: true,
681                                    raw_input: function_call_part.function_call.args.to_string(),
682                                    input: function_call_part.function_call.args,
683                                },
684                            )));
685                        }
686                        Part::FunctionResponsePart(_) => {}
687                        Part::ThoughtPart(part) => {
688                            events.push(Ok(LanguageModelCompletionEvent::Thinking {
689                                text: "(Encrypted thought)".to_string(), // TODO: Can we populate this from thought summaries?
690                                signature: Some(part.thought_signature),
691                            }));
692                        }
693                    });
694            }
695        }
696
697        // Even when Gemini wants to use a Tool, the API
698        // responds with `finish_reason: STOP`
699        if wants_to_use_tool {
700            self.stop_reason = StopReason::ToolUse;
701            events.push(Ok(LanguageModelCompletionEvent::Stop(StopReason::ToolUse)));
702        }
703        events
704    }
705}
706
707pub fn count_google_tokens(
708    request: LanguageModelRequest,
709    cx: &App,
710) -> BoxFuture<'static, Result<u64>> {
711    // We couldn't use the GoogleLanguageModelProvider to count tokens because the github copilot doesn't have the access to google_ai directly.
712    // So we have to use tokenizer from tiktoken_rs to count tokens.
713    cx.background_spawn(async move {
714        let messages = request
715            .messages
716            .into_iter()
717            .map(|message| tiktoken_rs::ChatCompletionRequestMessage {
718                role: match message.role {
719                    Role::User => "user".into(),
720                    Role::Assistant => "assistant".into(),
721                    Role::System => "system".into(),
722                },
723                content: Some(message.string_contents()),
724                name: None,
725                function_call: None,
726            })
727            .collect::<Vec<_>>();
728
729        // Tiktoken doesn't yet support these models, so we manually use the
730        // same tokenizer as GPT-4.
731        tiktoken_rs::num_tokens_from_messages("gpt-4", &messages).map(|tokens| tokens as u64)
732    })
733    .boxed()
734}
735
736fn update_usage(usage: &mut UsageMetadata, new: &UsageMetadata) {
737    if let Some(prompt_token_count) = new.prompt_token_count {
738        usage.prompt_token_count = Some(prompt_token_count);
739    }
740    if let Some(cached_content_token_count) = new.cached_content_token_count {
741        usage.cached_content_token_count = Some(cached_content_token_count);
742    }
743    if let Some(candidates_token_count) = new.candidates_token_count {
744        usage.candidates_token_count = Some(candidates_token_count);
745    }
746    if let Some(tool_use_prompt_token_count) = new.tool_use_prompt_token_count {
747        usage.tool_use_prompt_token_count = Some(tool_use_prompt_token_count);
748    }
749    if let Some(thoughts_token_count) = new.thoughts_token_count {
750        usage.thoughts_token_count = Some(thoughts_token_count);
751    }
752    if let Some(total_token_count) = new.total_token_count {
753        usage.total_token_count = Some(total_token_count);
754    }
755}
756
757fn convert_usage(usage: &UsageMetadata) -> language_model::TokenUsage {
758    let prompt_tokens = usage.prompt_token_count.unwrap_or(0);
759    let cached_tokens = usage.cached_content_token_count.unwrap_or(0);
760    let input_tokens = prompt_tokens - cached_tokens;
761    let output_tokens = usage.candidates_token_count.unwrap_or(0);
762
763    language_model::TokenUsage {
764        input_tokens,
765        output_tokens,
766        cache_read_input_tokens: cached_tokens,
767        cache_creation_input_tokens: 0,
768    }
769}
770
771struct ConfigurationView {
772    api_key_editor: Entity<Editor>,
773    state: gpui::Entity<State>,
774    load_credentials_task: Option<Task<()>>,
775}
776
777impl ConfigurationView {
778    fn new(state: gpui::Entity<State>, window: &mut Window, cx: &mut Context<Self>) -> Self {
779        cx.observe(&state, |_, _, cx| {
780            cx.notify();
781        })
782        .detach();
783
784        let load_credentials_task = Some(cx.spawn_in(window, {
785            let state = state.clone();
786            async move |this, cx| {
787                if let Some(task) = state
788                    .update(cx, |state, cx| state.authenticate(cx))
789                    .log_err()
790                {
791                    // We don't log an error, because "not signed in" is also an error.
792                    let _ = task.await;
793                }
794                this.update(cx, |this, cx| {
795                    this.load_credentials_task = None;
796                    cx.notify();
797                })
798                .log_err();
799            }
800        }));
801
802        Self {
803            api_key_editor: cx.new(|cx| {
804                let mut editor = Editor::single_line(window, cx);
805                editor.set_placeholder_text("AIzaSy...", cx);
806                editor
807            }),
808            state,
809            load_credentials_task,
810        }
811    }
812
813    fn save_api_key(&mut self, _: &menu::Confirm, window: &mut Window, cx: &mut Context<Self>) {
814        let api_key = self.api_key_editor.read(cx).text(cx);
815        if api_key.is_empty() {
816            return;
817        }
818
819        let state = self.state.clone();
820        cx.spawn_in(window, async move |_, cx| {
821            state
822                .update(cx, |state, cx| state.set_api_key(api_key, cx))?
823                .await
824        })
825        .detach_and_log_err(cx);
826
827        cx.notify();
828    }
829
830    fn reset_api_key(&mut self, window: &mut Window, cx: &mut Context<Self>) {
831        self.api_key_editor
832            .update(cx, |editor, cx| editor.set_text("", window, cx));
833
834        let state = self.state.clone();
835        cx.spawn_in(window, async move |_, cx| {
836            state.update(cx, |state, cx| state.reset_api_key(cx))?.await
837        })
838        .detach_and_log_err(cx);
839
840        cx.notify();
841    }
842
843    fn render_api_key_editor(&self, cx: &mut Context<Self>) -> impl IntoElement {
844        let settings = ThemeSettings::get_global(cx);
845        let text_style = TextStyle {
846            color: cx.theme().colors().text,
847            font_family: settings.ui_font.family.clone(),
848            font_features: settings.ui_font.features.clone(),
849            font_fallbacks: settings.ui_font.fallbacks.clone(),
850            font_size: rems(0.875).into(),
851            font_weight: settings.ui_font.weight,
852            font_style: FontStyle::Normal,
853            line_height: relative(1.3),
854            white_space: WhiteSpace::Normal,
855            ..Default::default()
856        };
857        EditorElement::new(
858            &self.api_key_editor,
859            EditorStyle {
860                background: cx.theme().colors().editor_background,
861                local_player: cx.theme().players().local(),
862                text: text_style,
863                ..Default::default()
864            },
865        )
866    }
867
868    fn should_render_editor(&self, cx: &mut Context<Self>) -> bool {
869        !self.state.read(cx).is_authenticated()
870    }
871}
872
873impl Render for ConfigurationView {
874    fn render(&mut self, _: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
875        let env_var_set = self.state.read(cx).api_key_from_env;
876
877        if self.load_credentials_task.is_some() {
878            div().child(Label::new("Loading credentials...")).into_any()
879        } else if self.should_render_editor(cx) {
880            v_flex()
881                .size_full()
882                .on_action(cx.listener(Self::save_api_key))
883                .child(Label::new("To use Zed's agent with Google AI, you need to add an API key. Follow these steps:"))
884                .child(
885                    List::new()
886                        .child(InstructionListItem::new(
887                            "Create one by visiting",
888                            Some("Google AI's console"),
889                            Some("https://aistudio.google.com/app/apikey"),
890                        ))
891                        .child(InstructionListItem::text_only(
892                            "Paste your API key below and hit enter to start using the assistant",
893                        )),
894                )
895                .child(
896                    h_flex()
897                        .w_full()
898                        .my_2()
899                        .px_2()
900                        .py_1()
901                        .bg(cx.theme().colors().editor_background)
902                        .border_1()
903                        .border_color(cx.theme().colors().border)
904                        .rounded_sm()
905                        .child(self.render_api_key_editor(cx)),
906                )
907                .child(
908                    Label::new(
909                        format!("You can also assign the {GEMINI_API_KEY_VAR} environment variable and restart Zed."),
910                    )
911                    .size(LabelSize::Small).color(Color::Muted),
912                )
913                .into_any()
914        } else {
915            h_flex()
916                .mt_1()
917                .p_1()
918                .justify_between()
919                .rounded_md()
920                .border_1()
921                .border_color(cx.theme().colors().border)
922                .bg(cx.theme().colors().background)
923                .child(
924                    h_flex()
925                        .gap_1()
926                        .child(Icon::new(IconName::Check).color(Color::Success))
927                        .child(Label::new(if env_var_set {
928                            format!("API key set in {GEMINI_API_KEY_VAR} environment variable.")
929                        } else {
930                            "API key configured.".to_string()
931                        })),
932                )
933                .child(
934                    Button::new("reset-key", "Reset Key")
935                        .label_size(LabelSize::Small)
936                        .icon(Some(IconName::Trash))
937                        .icon_size(IconSize::Small)
938                        .icon_position(IconPosition::Start)
939                        .disabled(env_var_set)
940                        .when(env_var_set, |this| {
941                            this.tooltip(Tooltip::text(format!("To reset your API key, make sure {GEMINI_API_KEY_VAR} and {GOOGLE_AI_API_KEY_VAR} environment variables are unset.")))
942                        })
943                        .on_click(cx.listener(|this, _, window, cx| this.reset_api_key(window, cx))),
944                )
945                .into_any()
946        }
947    }
948}