1use anyhow::{anyhow, Result};
2use collections::BTreeMap;
3use editor::{Editor, EditorElement, EditorStyle};
4use futures::{future::BoxFuture, FutureExt, StreamExt};
5use google_ai::stream_generate_content;
6use gpui::{
7 AnyView, AppContext, AsyncAppContext, FontStyle, Subscription, Task, TextStyle, View,
8 WhiteSpace,
9};
10use http_client::HttpClient;
11use schemars::JsonSchema;
12use serde::{Deserialize, Serialize};
13use settings::{Settings, SettingsStore};
14use std::{future, sync::Arc, time::Duration};
15use strum::IntoEnumIterator;
16use theme::ThemeSettings;
17use ui::prelude::*;
18use util::ResultExt;
19
20use crate::{
21 settings::AllLanguageModelSettings, LanguageModel, LanguageModelId, LanguageModelName,
22 LanguageModelProvider, LanguageModelProviderId, LanguageModelProviderName,
23 LanguageModelProviderState, LanguageModelRequest, RateLimiter,
24};
25
26const PROVIDER_ID: &str = "google";
27const PROVIDER_NAME: &str = "Google AI";
28
29#[derive(Default, Clone, Debug, PartialEq)]
30pub struct GoogleSettings {
31 pub api_url: String,
32 pub low_speed_timeout: Option<Duration>,
33 pub available_models: Vec<AvailableModel>,
34}
35
36#[derive(Clone, Debug, PartialEq, Serialize, Deserialize, JsonSchema)]
37pub struct AvailableModel {
38 name: String,
39 max_tokens: usize,
40}
41
42pub struct GoogleLanguageModelProvider {
43 http_client: Arc<dyn HttpClient>,
44 state: gpui::Model<State>,
45}
46
47pub struct State {
48 api_key: Option<String>,
49 _subscription: Subscription,
50}
51
52impl GoogleLanguageModelProvider {
53 pub fn new(http_client: Arc<dyn HttpClient>, cx: &mut AppContext) -> Self {
54 let state = cx.new_model(|cx| State {
55 api_key: None,
56 _subscription: cx.observe_global::<SettingsStore>(|_, cx| {
57 cx.notify();
58 }),
59 });
60
61 Self { http_client, state }
62 }
63}
64
65impl LanguageModelProviderState for GoogleLanguageModelProvider {
66 type ObservableEntity = State;
67
68 fn observable_entity(&self) -> Option<gpui::Model<Self::ObservableEntity>> {
69 Some(self.state.clone())
70 }
71}
72
73impl LanguageModelProvider for GoogleLanguageModelProvider {
74 fn id(&self) -> LanguageModelProviderId {
75 LanguageModelProviderId(PROVIDER_ID.into())
76 }
77
78 fn name(&self) -> LanguageModelProviderName {
79 LanguageModelProviderName(PROVIDER_NAME.into())
80 }
81
82 fn provided_models(&self, cx: &AppContext) -> Vec<Arc<dyn LanguageModel>> {
83 let mut models = BTreeMap::default();
84
85 // Add base models from google_ai::Model::iter()
86 for model in google_ai::Model::iter() {
87 if !matches!(model, google_ai::Model::Custom { .. }) {
88 models.insert(model.id().to_string(), model);
89 }
90 }
91
92 // Override with available models from settings
93 for model in &AllLanguageModelSettings::get_global(cx)
94 .google
95 .available_models
96 {
97 models.insert(
98 model.name.clone(),
99 google_ai::Model::Custom {
100 name: model.name.clone(),
101 max_tokens: model.max_tokens,
102 },
103 );
104 }
105
106 models
107 .into_values()
108 .map(|model| {
109 Arc::new(GoogleLanguageModel {
110 id: LanguageModelId::from(model.id().to_string()),
111 model,
112 state: self.state.clone(),
113 http_client: self.http_client.clone(),
114 rate_limiter: RateLimiter::new(4),
115 }) as Arc<dyn LanguageModel>
116 })
117 .collect()
118 }
119
120 fn is_authenticated(&self, cx: &AppContext) -> bool {
121 self.state.read(cx).api_key.is_some()
122 }
123
124 fn authenticate(&self, cx: &mut AppContext) -> Task<Result<()>> {
125 if self.is_authenticated(cx) {
126 Task::ready(Ok(()))
127 } else {
128 let api_url = AllLanguageModelSettings::get_global(cx)
129 .google
130 .api_url
131 .clone();
132 let state = self.state.clone();
133 cx.spawn(|mut cx| async move {
134 let api_key = if let Ok(api_key) = std::env::var("GOOGLE_AI_API_KEY") {
135 api_key
136 } else {
137 let (_, api_key) = cx
138 .update(|cx| cx.read_credentials(&api_url))?
139 .await?
140 .ok_or_else(|| anyhow!("credentials not found"))?;
141 String::from_utf8(api_key)?
142 };
143
144 state.update(&mut cx, |this, cx| {
145 this.api_key = Some(api_key);
146 cx.notify();
147 })
148 })
149 }
150 }
151
152 fn authentication_prompt(&self, cx: &mut WindowContext) -> AnyView {
153 cx.new_view(|cx| AuthenticationPrompt::new(self.state.clone(), cx))
154 .into()
155 }
156
157 fn reset_credentials(&self, cx: &mut AppContext) -> Task<Result<()>> {
158 let state = self.state.clone();
159 let delete_credentials =
160 cx.delete_credentials(&AllLanguageModelSettings::get_global(cx).google.api_url);
161 cx.spawn(|mut cx| async move {
162 delete_credentials.await.log_err();
163 state.update(&mut cx, |this, cx| {
164 this.api_key = None;
165 cx.notify();
166 })
167 })
168 }
169}
170
171pub struct GoogleLanguageModel {
172 id: LanguageModelId,
173 model: google_ai::Model,
174 state: gpui::Model<State>,
175 http_client: Arc<dyn HttpClient>,
176 rate_limiter: RateLimiter,
177}
178
179impl LanguageModel for GoogleLanguageModel {
180 fn id(&self) -> LanguageModelId {
181 self.id.clone()
182 }
183
184 fn name(&self) -> LanguageModelName {
185 LanguageModelName::from(self.model.display_name().to_string())
186 }
187
188 fn provider_id(&self) -> LanguageModelProviderId {
189 LanguageModelProviderId(PROVIDER_ID.into())
190 }
191
192 fn provider_name(&self) -> LanguageModelProviderName {
193 LanguageModelProviderName(PROVIDER_NAME.into())
194 }
195
196 fn telemetry_id(&self) -> String {
197 format!("google/{}", self.model.id())
198 }
199
200 fn max_token_count(&self) -> usize {
201 self.model.max_token_count()
202 }
203
204 fn count_tokens(
205 &self,
206 request: LanguageModelRequest,
207 cx: &AppContext,
208 ) -> BoxFuture<'static, Result<usize>> {
209 let request = request.into_google(self.model.id().to_string());
210 let http_client = self.http_client.clone();
211 let api_key = self.state.read(cx).api_key.clone();
212 let api_url = AllLanguageModelSettings::get_global(cx)
213 .google
214 .api_url
215 .clone();
216
217 async move {
218 let api_key = api_key.ok_or_else(|| anyhow!("missing api key"))?;
219 let response = google_ai::count_tokens(
220 http_client.as_ref(),
221 &api_url,
222 &api_key,
223 google_ai::CountTokensRequest {
224 contents: request.contents,
225 },
226 )
227 .await?;
228 Ok(response.total_tokens)
229 }
230 .boxed()
231 }
232
233 fn stream_completion(
234 &self,
235 request: LanguageModelRequest,
236 cx: &AsyncAppContext,
237 ) -> BoxFuture<'static, Result<futures::stream::BoxStream<'static, Result<String>>>> {
238 let request = request.into_google(self.model.id().to_string());
239
240 let http_client = self.http_client.clone();
241 let Ok((api_key, api_url)) = cx.read_model(&self.state, |state, cx| {
242 let settings = &AllLanguageModelSettings::get_global(cx).google;
243 (state.api_key.clone(), settings.api_url.clone())
244 }) else {
245 return futures::future::ready(Err(anyhow!("App state dropped"))).boxed();
246 };
247
248 let future = self.rate_limiter.stream(async move {
249 let api_key = api_key.ok_or_else(|| anyhow!("missing api key"))?;
250 let response =
251 stream_generate_content(http_client.as_ref(), &api_url, &api_key, request);
252 let events = response.await?;
253 Ok(google_ai::extract_text_from_events(events).boxed())
254 });
255 async move { Ok(future.await?.boxed()) }.boxed()
256 }
257
258 fn use_any_tool(
259 &self,
260 _request: LanguageModelRequest,
261 _name: String,
262 _description: String,
263 _schema: serde_json::Value,
264 _cx: &AsyncAppContext,
265 ) -> BoxFuture<'static, Result<serde_json::Value>> {
266 future::ready(Err(anyhow!("not implemented"))).boxed()
267 }
268}
269
270struct AuthenticationPrompt {
271 api_key: View<Editor>,
272 state: gpui::Model<State>,
273}
274
275impl AuthenticationPrompt {
276 fn new(state: gpui::Model<State>, cx: &mut WindowContext) -> Self {
277 Self {
278 api_key: cx.new_view(|cx| {
279 let mut editor = Editor::single_line(cx);
280 editor.set_placeholder_text("AIzaSy...", cx);
281 editor
282 }),
283 state,
284 }
285 }
286
287 fn save_api_key(&mut self, _: &menu::Confirm, cx: &mut ViewContext<Self>) {
288 let api_key = self.api_key.read(cx).text(cx);
289 if api_key.is_empty() {
290 return;
291 }
292
293 let settings = &AllLanguageModelSettings::get_global(cx).google;
294 let write_credentials =
295 cx.write_credentials(&settings.api_url, "Bearer", api_key.as_bytes());
296 let state = self.state.clone();
297 cx.spawn(|_, mut cx| async move {
298 write_credentials.await?;
299 state.update(&mut cx, |this, cx| {
300 this.api_key = Some(api_key);
301 cx.notify();
302 })
303 })
304 .detach_and_log_err(cx);
305 }
306
307 fn render_api_key_editor(&self, cx: &mut ViewContext<Self>) -> impl IntoElement {
308 let settings = ThemeSettings::get_global(cx);
309 let text_style = TextStyle {
310 color: cx.theme().colors().text,
311 font_family: settings.ui_font.family.clone(),
312 font_features: settings.ui_font.features.clone(),
313 font_fallbacks: settings.ui_font.fallbacks.clone(),
314 font_size: rems(0.875).into(),
315 font_weight: settings.ui_font.weight,
316 font_style: FontStyle::Normal,
317 line_height: relative(1.3),
318 background_color: None,
319 underline: None,
320 strikethrough: None,
321 white_space: WhiteSpace::Normal,
322 };
323 EditorElement::new(
324 &self.api_key,
325 EditorStyle {
326 background: cx.theme().colors().editor_background,
327 local_player: cx.theme().players().local(),
328 text: text_style,
329 ..Default::default()
330 },
331 )
332 }
333}
334
335impl Render for AuthenticationPrompt {
336 fn render(&mut self, cx: &mut ViewContext<Self>) -> impl IntoElement {
337 const INSTRUCTIONS: [&str; 4] = [
338 "To use the Google AI assistant, you need to add your Google AI API key.",
339 "You can create an API key at: https://makersuite.google.com/app/apikey",
340 "",
341 "Paste your Google AI API key below and hit enter to use the assistant:",
342 ];
343
344 v_flex()
345 .p_4()
346 .size_full()
347 .on_action(cx.listener(Self::save_api_key))
348 .children(
349 INSTRUCTIONS.map(|instruction| Label::new(instruction).size(LabelSize::Small)),
350 )
351 .child(
352 h_flex()
353 .w_full()
354 .my_2()
355 .px_2()
356 .py_1()
357 .bg(cx.theme().colors().editor_background)
358 .rounded_md()
359 .child(self.render_api_key_editor(cx)),
360 )
361 .child(
362 Label::new(
363 "You can also assign the GOOGLE_AI_API_KEY environment variable and restart Zed.",
364 )
365 .size(LabelSize::Small),
366 )
367 .child(
368 h_flex()
369 .gap_2()
370 .child(Label::new("Click on").size(LabelSize::Small))
371 .child(Icon::new(IconName::ZedAssistant).size(IconSize::XSmall))
372 .child(
373 Label::new("in the status bar to close this panel.").size(LabelSize::Small),
374 ),
375 )
376 .into_any()
377 }
378}