1use anyhow::{anyhow, Result};
2use collections::BTreeMap;
3use editor::{Editor, EditorElement, EditorStyle};
4use futures::{future::BoxFuture, stream::BoxStream, FutureExt, StreamExt};
5use gpui::{
6 AnyView, AppContext as _, AsyncApp, Entity, FontStyle, Subscription, Task, TextStyle,
7 WhiteSpace,
8};
9use http_client::HttpClient;
10use language_model::{
11 LanguageModel, LanguageModelCompletionEvent, LanguageModelId, LanguageModelName,
12 LanguageModelProvider, LanguageModelProviderId, LanguageModelProviderName,
13 LanguageModelProviderState, LanguageModelRequest, RateLimiter, Role,
14};
15use schemars::JsonSchema;
16use serde::{Deserialize, Serialize};
17use settings::{Settings, SettingsStore};
18use std::sync::Arc;
19use theme::ThemeSettings;
20use ui::{prelude::*, Icon, IconName};
21use util::ResultExt;
22
23use crate::AllLanguageModelSettings;
24
25const PROVIDER_ID: &str = "deepseek";
26const PROVIDER_NAME: &str = "DeepSeek";
27const DEEPSEEK_API_KEY_VAR: &str = "DEEPSEEK_API_KEY";
28
29#[derive(Default, Clone, Debug, PartialEq)]
30pub struct DeepSeekSettings {
31 pub api_url: String,
32 pub available_models: Vec<AvailableModel>,
33}
34
35#[derive(Clone, Debug, PartialEq, Serialize, Deserialize, JsonSchema)]
36pub struct AvailableModel {
37 pub name: String,
38 pub display_name: Option<String>,
39 pub max_tokens: usize,
40 pub max_output_tokens: Option<u32>,
41}
42
43pub struct DeepSeekLanguageModelProvider {
44 http_client: Arc<dyn HttpClient>,
45 state: Entity<State>,
46}
47
48pub struct State {
49 api_key: Option<String>,
50 api_key_from_env: bool,
51 _subscription: Subscription,
52}
53
54impl State {
55 fn is_authenticated(&self) -> bool {
56 self.api_key.is_some()
57 }
58
59 fn reset_api_key(&self, cx: &mut Context<Self>) -> Task<Result<()>> {
60 let settings = &AllLanguageModelSettings::get_global(cx).deepseek;
61 let delete_credentials = cx.delete_credentials(&settings.api_url);
62 cx.spawn(|this, mut cx| async move {
63 delete_credentials.await.log_err();
64 this.update(&mut cx, |this, cx| {
65 this.api_key = None;
66 this.api_key_from_env = false;
67 cx.notify();
68 })
69 })
70 }
71
72 fn set_api_key(&mut self, api_key: String, cx: &mut Context<Self>) -> Task<Result<()>> {
73 let settings = &AllLanguageModelSettings::get_global(cx).deepseek;
74 let write_credentials =
75 cx.write_credentials(&settings.api_url, "Bearer", api_key.as_bytes());
76
77 cx.spawn(|this, mut cx| async move {
78 write_credentials.await?;
79 this.update(&mut cx, |this, cx| {
80 this.api_key = Some(api_key);
81 cx.notify();
82 })
83 })
84 }
85
86 fn authenticate(&self, cx: &mut Context<Self>) -> Task<Result<()>> {
87 if self.is_authenticated() {
88 Task::ready(Ok(()))
89 } else {
90 let api_url = AllLanguageModelSettings::get_global(cx)
91 .deepseek
92 .api_url
93 .clone();
94
95 cx.spawn(|this, mut cx| async move {
96 let (api_key, from_env) = if let Ok(api_key) = std::env::var(DEEPSEEK_API_KEY_VAR) {
97 (api_key, true)
98 } else {
99 let (_, api_key) = cx
100 .update(|cx| cx.read_credentials(&api_url))?
101 .await?
102 .ok_or_else(|| anyhow!("credentials not found"))?;
103 (String::from_utf8(api_key)?, false)
104 };
105
106 this.update(&mut cx, |this, cx| {
107 this.api_key = Some(api_key);
108 this.api_key_from_env = from_env;
109 cx.notify();
110 })
111 })
112 }
113 }
114}
115
116impl DeepSeekLanguageModelProvider {
117 pub fn new(http_client: Arc<dyn HttpClient>, cx: &mut App) -> Self {
118 let state = cx.new(|cx| State {
119 api_key: None,
120 api_key_from_env: false,
121 _subscription: cx.observe_global::<SettingsStore>(|_this: &mut State, cx| {
122 cx.notify();
123 }),
124 });
125
126 Self { http_client, state }
127 }
128}
129
130impl LanguageModelProviderState for DeepSeekLanguageModelProvider {
131 type ObservableEntity = State;
132
133 fn observable_entity(&self) -> Option<Entity<Self::ObservableEntity>> {
134 Some(self.state.clone())
135 }
136}
137
138impl LanguageModelProvider for DeepSeekLanguageModelProvider {
139 fn id(&self) -> LanguageModelProviderId {
140 LanguageModelProviderId(PROVIDER_ID.into())
141 }
142
143 fn name(&self) -> LanguageModelProviderName {
144 LanguageModelProviderName(PROVIDER_NAME.into())
145 }
146
147 fn icon(&self) -> IconName {
148 IconName::AiDeepSeek
149 }
150
151 fn provided_models(&self, cx: &App) -> Vec<Arc<dyn LanguageModel>> {
152 let mut models = BTreeMap::default();
153
154 models.insert("deepseek-chat", deepseek::Model::Chat);
155 models.insert("deepseek-reasoner", deepseek::Model::Reasoner);
156
157 for available_model in AllLanguageModelSettings::get_global(cx)
158 .deepseek
159 .available_models
160 .iter()
161 {
162 models.insert(
163 &available_model.name,
164 deepseek::Model::Custom {
165 name: available_model.name.clone(),
166 display_name: available_model.display_name.clone(),
167 max_tokens: available_model.max_tokens,
168 max_output_tokens: available_model.max_output_tokens,
169 },
170 );
171 }
172
173 models
174 .into_values()
175 .map(|model| {
176 Arc::new(DeepSeekLanguageModel {
177 id: LanguageModelId::from(model.id().to_string()),
178 model,
179 state: self.state.clone(),
180 http_client: self.http_client.clone(),
181 request_limiter: RateLimiter::new(4),
182 }) as Arc<dyn LanguageModel>
183 })
184 .collect()
185 }
186
187 fn is_authenticated(&self, cx: &App) -> bool {
188 self.state.read(cx).is_authenticated()
189 }
190
191 fn authenticate(&self, cx: &mut App) -> Task<Result<()>> {
192 self.state.update(cx, |state, cx| state.authenticate(cx))
193 }
194
195 fn configuration_view(&self, window: &mut Window, cx: &mut App) -> AnyView {
196 cx.new(|cx| ConfigurationView::new(self.state.clone(), window, cx))
197 .into()
198 }
199
200 fn reset_credentials(&self, cx: &mut App) -> Task<Result<()>> {
201 self.state.update(cx, |state, cx| state.reset_api_key(cx))
202 }
203}
204
205pub struct DeepSeekLanguageModel {
206 id: LanguageModelId,
207 model: deepseek::Model,
208 state: Entity<State>,
209 http_client: Arc<dyn HttpClient>,
210 request_limiter: RateLimiter,
211}
212
213impl DeepSeekLanguageModel {
214 fn stream_completion(
215 &self,
216 request: deepseek::Request,
217 cx: &AsyncApp,
218 ) -> BoxFuture<'static, Result<BoxStream<'static, Result<deepseek::StreamResponse>>>> {
219 let http_client = self.http_client.clone();
220 let Ok((api_key, api_url)) = cx.read_entity(&self.state, |state, cx| {
221 let settings = &AllLanguageModelSettings::get_global(cx).deepseek;
222 (state.api_key.clone(), settings.api_url.clone())
223 }) else {
224 return futures::future::ready(Err(anyhow!("App state dropped"))).boxed();
225 };
226
227 let future = self.request_limiter.stream(async move {
228 let api_key = api_key.ok_or_else(|| anyhow!("Missing DeepSeek API Key"))?;
229 let request =
230 deepseek::stream_completion(http_client.as_ref(), &api_url, &api_key, request);
231 let response = request.await?;
232 Ok(response)
233 });
234
235 async move { Ok(future.await?.boxed()) }.boxed()
236 }
237}
238
239impl LanguageModel for DeepSeekLanguageModel {
240 fn id(&self) -> LanguageModelId {
241 self.id.clone()
242 }
243
244 fn name(&self) -> LanguageModelName {
245 LanguageModelName::from(self.model.display_name().to_string())
246 }
247
248 fn provider_id(&self) -> LanguageModelProviderId {
249 LanguageModelProviderId(PROVIDER_ID.into())
250 }
251
252 fn provider_name(&self) -> LanguageModelProviderName {
253 LanguageModelProviderName(PROVIDER_NAME.into())
254 }
255
256 fn telemetry_id(&self) -> String {
257 format!("deepseek/{}", self.model.id())
258 }
259
260 fn max_token_count(&self) -> usize {
261 self.model.max_token_count()
262 }
263
264 fn max_output_tokens(&self) -> Option<u32> {
265 self.model.max_output_tokens()
266 }
267
268 fn count_tokens(
269 &self,
270 request: LanguageModelRequest,
271 cx: &App,
272 ) -> BoxFuture<'static, Result<usize>> {
273 cx.background_spawn(async move {
274 let messages = request
275 .messages
276 .into_iter()
277 .map(|message| tiktoken_rs::ChatCompletionRequestMessage {
278 role: match message.role {
279 Role::User => "user".into(),
280 Role::Assistant => "assistant".into(),
281 Role::System => "system".into(),
282 },
283 content: Some(message.string_contents()),
284 name: None,
285 function_call: None,
286 })
287 .collect::<Vec<_>>();
288
289 tiktoken_rs::num_tokens_from_messages("gpt-4", &messages)
290 })
291 .boxed()
292 }
293
294 fn stream_completion(
295 &self,
296 request: LanguageModelRequest,
297 cx: &AsyncApp,
298 ) -> BoxFuture<'static, Result<BoxStream<'static, Result<LanguageModelCompletionEvent>>>> {
299 let request = request.into_deepseek(self.model.id().to_string(), self.max_output_tokens());
300 let stream = self.stream_completion(request, cx);
301
302 async move {
303 let stream = stream.await?;
304 Ok(stream
305 .map(|result| {
306 result.and_then(|response| {
307 response
308 .choices
309 .first()
310 .ok_or_else(|| anyhow!("Empty response"))
311 .map(|choice| {
312 choice
313 .delta
314 .content
315 .clone()
316 .unwrap_or_default()
317 .map(LanguageModelCompletionEvent::Text)
318 })
319 })
320 })
321 .boxed())
322 }
323 .boxed()
324 }
325 fn use_any_tool(
326 &self,
327 request: LanguageModelRequest,
328 name: String,
329 description: String,
330 schema: serde_json::Value,
331 cx: &AsyncApp,
332 ) -> BoxFuture<'static, Result<futures::stream::BoxStream<'static, Result<String>>>> {
333 let mut deepseek_request =
334 request.into_deepseek(self.model.id().to_string(), self.max_output_tokens());
335
336 deepseek_request.tools = vec![deepseek::ToolDefinition::Function {
337 function: deepseek::FunctionDefinition {
338 name: name.clone(),
339 description: Some(description),
340 parameters: Some(schema),
341 },
342 }];
343
344 let response_stream = self.stream_completion(deepseek_request, cx);
345
346 self.request_limiter
347 .run(async move {
348 let stream = response_stream.await?;
349
350 let tool_args_stream = stream
351 .filter_map(move |response| async move {
352 match response {
353 Ok(response) => {
354 for choice in response.choices {
355 if let Some(tool_calls) = choice.delta.tool_calls {
356 for tool_call in tool_calls {
357 if let Some(function) = tool_call.function {
358 if let Some(args) = function.arguments {
359 return Some(Ok(args));
360 }
361 }
362 }
363 }
364 }
365 None
366 }
367 Err(e) => Some(Err(e)),
368 }
369 })
370 .boxed();
371
372 Ok(tool_args_stream)
373 })
374 .boxed()
375 }
376}
377
378struct ConfigurationView {
379 api_key_editor: Entity<Editor>,
380 state: Entity<State>,
381 load_credentials_task: Option<Task<()>>,
382}
383
384impl ConfigurationView {
385 fn new(state: Entity<State>, window: &mut Window, cx: &mut Context<Self>) -> Self {
386 let api_key_editor = cx.new(|cx| {
387 let mut editor = Editor::single_line(window, cx);
388 editor.set_placeholder_text("sk-00000000000000000000000000000000", cx);
389 editor
390 });
391
392 cx.observe(&state, |_, _, cx| {
393 cx.notify();
394 })
395 .detach();
396
397 let load_credentials_task = Some(cx.spawn({
398 let state = state.clone();
399 |this, mut cx| async move {
400 if let Some(task) = state
401 .update(&mut cx, |state, cx| state.authenticate(cx))
402 .log_err()
403 {
404 let _ = task.await;
405 }
406
407 this.update(&mut cx, |this, cx| {
408 this.load_credentials_task = None;
409 cx.notify();
410 })
411 .log_err();
412 }
413 }));
414
415 Self {
416 api_key_editor,
417 state,
418 load_credentials_task,
419 }
420 }
421
422 fn save_api_key(&mut self, _: &menu::Confirm, _window: &mut Window, cx: &mut Context<Self>) {
423 let api_key = self.api_key_editor.read(cx).text(cx);
424 if api_key.is_empty() {
425 return;
426 }
427
428 let state = self.state.clone();
429 cx.spawn(|_, mut cx| async move {
430 state
431 .update(&mut cx, |state, cx| state.set_api_key(api_key, cx))?
432 .await
433 })
434 .detach_and_log_err(cx);
435
436 cx.notify();
437 }
438
439 fn reset_api_key(&mut self, window: &mut Window, cx: &mut Context<Self>) {
440 self.api_key_editor
441 .update(cx, |editor, cx| editor.set_text("", window, cx));
442
443 let state = self.state.clone();
444 cx.spawn(|_, mut cx| async move {
445 state
446 .update(&mut cx, |state, cx| state.reset_api_key(cx))?
447 .await
448 })
449 .detach_and_log_err(cx);
450
451 cx.notify();
452 }
453
454 fn render_api_key_editor(&self, cx: &mut Context<Self>) -> impl IntoElement {
455 let settings = ThemeSettings::get_global(cx);
456 let text_style = TextStyle {
457 color: cx.theme().colors().text,
458 font_family: settings.ui_font.family.clone(),
459 font_features: settings.ui_font.features.clone(),
460 font_fallbacks: settings.ui_font.fallbacks.clone(),
461 font_size: rems(0.875).into(),
462 font_weight: settings.ui_font.weight,
463 font_style: FontStyle::Normal,
464 line_height: relative(1.3),
465 background_color: None,
466 underline: None,
467 strikethrough: None,
468 white_space: WhiteSpace::Normal,
469 ..Default::default()
470 };
471 EditorElement::new(
472 &self.api_key_editor,
473 EditorStyle {
474 background: cx.theme().colors().editor_background,
475 local_player: cx.theme().players().local(),
476 text: text_style,
477 ..Default::default()
478 },
479 )
480 }
481
482 fn should_render_editor(&self, cx: &mut Context<Self>) -> bool {
483 !self.state.read(cx).is_authenticated()
484 }
485}
486
487impl Render for ConfigurationView {
488 fn render(&mut self, _window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
489 const DEEPSEEK_CONSOLE_URL: &str = "https://platform.deepseek.com/api_keys";
490 const INSTRUCTIONS: [&str; 3] = [
491 "To use DeepSeek in Zed, you need an API key:",
492 "- Get your API key from:",
493 "- Paste it below and press enter:",
494 ];
495
496 let env_var_set = self.state.read(cx).api_key_from_env;
497
498 if self.load_credentials_task.is_some() {
499 div().child(Label::new("Loading credentials...")).into_any()
500 } else if self.should_render_editor(cx) {
501 v_flex()
502 .size_full()
503 .on_action(cx.listener(Self::save_api_key))
504 .child(Label::new(INSTRUCTIONS[0]))
505 .child(
506 h_flex().child(Label::new(INSTRUCTIONS[1])).child(
507 Button::new("deepseek_console", DEEPSEEK_CONSOLE_URL)
508 .style(ButtonStyle::Subtle)
509 .icon(IconName::ArrowUpRight)
510 .icon_size(IconSize::XSmall)
511 .icon_color(Color::Muted)
512 .on_click(move |_, _window, cx| cx.open_url(DEEPSEEK_CONSOLE_URL)),
513 ),
514 )
515 .child(Label::new(INSTRUCTIONS[2]))
516 .child(
517 h_flex()
518 .w_full()
519 .my_2()
520 .px_2()
521 .py_1()
522 .bg(cx.theme().colors().editor_background)
523 .border_1()
524 .border_color(cx.theme().colors().border_variant)
525 .rounded_md()
526 .child(self.render_api_key_editor(cx)),
527 )
528 .child(
529 Label::new(format!(
530 "Or set the {} environment variable.",
531 DEEPSEEK_API_KEY_VAR
532 ))
533 .size(LabelSize::Small),
534 )
535 .into_any()
536 } else {
537 h_flex()
538 .size_full()
539 .justify_between()
540 .child(
541 h_flex()
542 .gap_1()
543 .child(Icon::new(IconName::Check).color(Color::Success))
544 .child(Label::new(if env_var_set {
545 format!("API key set in {}", DEEPSEEK_API_KEY_VAR)
546 } else {
547 "API key configured".to_string()
548 })),
549 )
550 .child(
551 Button::new("reset-key", "Reset")
552 .icon(IconName::Trash)
553 .disabled(env_var_set)
554 .on_click(
555 cx.listener(|this, _, window, cx| this.reset_api_key(window, cx)),
556 ),
557 )
558 .into_any()
559 }
560 }
561}