1use anyhow::{Context as _, Result, anyhow};
2use collections::BTreeMap;
3use credentials_provider::CredentialsProvider;
4use editor::{Editor, EditorElement, EditorStyle};
5use futures::{FutureExt, StreamExt, future::BoxFuture, stream::BoxStream};
6use gpui::{
7 AnyView, AppContext as _, AsyncApp, Entity, FontStyle, Subscription, Task, TextStyle,
8 WhiteSpace,
9};
10use http_client::HttpClient;
11use language_model::{
12 AuthenticateError, LanguageModel, LanguageModelCompletionError, LanguageModelCompletionEvent,
13 LanguageModelId, LanguageModelName, LanguageModelProvider, LanguageModelProviderId,
14 LanguageModelProviderName, LanguageModelProviderState, LanguageModelRequest,
15 LanguageModelToolChoice, RateLimiter, Role,
16};
17use schemars::JsonSchema;
18use serde::{Deserialize, Serialize};
19use settings::{Settings, SettingsStore};
20use std::sync::Arc;
21use theme::ThemeSettings;
22use ui::{Icon, IconName, List, prelude::*};
23use util::ResultExt;
24
25use crate::{AllLanguageModelSettings, ui::InstructionListItem};
26
27const PROVIDER_ID: &str = "deepseek";
28const PROVIDER_NAME: &str = "DeepSeek";
29const DEEPSEEK_API_KEY_VAR: &str = "DEEPSEEK_API_KEY";
30
31#[derive(Default, Clone, Debug, PartialEq)]
32pub struct DeepSeekSettings {
33 pub api_url: String,
34 pub available_models: Vec<AvailableModel>,
35}
36
37#[derive(Clone, Debug, PartialEq, Serialize, Deserialize, JsonSchema)]
38pub struct AvailableModel {
39 pub name: String,
40 pub display_name: Option<String>,
41 pub max_tokens: usize,
42 pub max_output_tokens: Option<u32>,
43}
44
45pub struct DeepSeekLanguageModelProvider {
46 http_client: Arc<dyn HttpClient>,
47 state: Entity<State>,
48}
49
50pub struct State {
51 api_key: Option<String>,
52 api_key_from_env: bool,
53 _subscription: Subscription,
54}
55
56impl State {
57 fn is_authenticated(&self) -> bool {
58 self.api_key.is_some()
59 }
60
61 fn reset_api_key(&self, cx: &mut Context<Self>) -> Task<Result<()>> {
62 let credentials_provider = <dyn CredentialsProvider>::global(cx);
63 let api_url = AllLanguageModelSettings::get_global(cx)
64 .deepseek
65 .api_url
66 .clone();
67 cx.spawn(async move |this, cx| {
68 credentials_provider
69 .delete_credentials(&api_url, &cx)
70 .await
71 .log_err();
72 this.update(cx, |this, cx| {
73 this.api_key = None;
74 this.api_key_from_env = false;
75 cx.notify();
76 })
77 })
78 }
79
80 fn set_api_key(&mut self, api_key: String, cx: &mut Context<Self>) -> Task<Result<()>> {
81 let credentials_provider = <dyn CredentialsProvider>::global(cx);
82 let api_url = AllLanguageModelSettings::get_global(cx)
83 .deepseek
84 .api_url
85 .clone();
86 cx.spawn(async move |this, cx| {
87 credentials_provider
88 .write_credentials(&api_url, "Bearer", api_key.as_bytes(), &cx)
89 .await?;
90 this.update(cx, |this, cx| {
91 this.api_key = Some(api_key);
92 cx.notify();
93 })
94 })
95 }
96
97 fn authenticate(&self, cx: &mut Context<Self>) -> Task<Result<(), AuthenticateError>> {
98 if self.is_authenticated() {
99 return Task::ready(Ok(()));
100 }
101
102 let credentials_provider = <dyn CredentialsProvider>::global(cx);
103 let api_url = AllLanguageModelSettings::get_global(cx)
104 .deepseek
105 .api_url
106 .clone();
107 cx.spawn(async move |this, cx| {
108 let (api_key, from_env) = if let Ok(api_key) = std::env::var(DEEPSEEK_API_KEY_VAR) {
109 (api_key, true)
110 } else {
111 let (_, api_key) = credentials_provider
112 .read_credentials(&api_url, &cx)
113 .await?
114 .ok_or(AuthenticateError::CredentialsNotFound)?;
115 (
116 String::from_utf8(api_key).context("invalid {PROVIDER_NAME} API key")?,
117 false,
118 )
119 };
120
121 this.update(cx, |this, cx| {
122 this.api_key = Some(api_key);
123 this.api_key_from_env = from_env;
124 cx.notify();
125 })?;
126
127 Ok(())
128 })
129 }
130}
131
132impl DeepSeekLanguageModelProvider {
133 pub fn new(http_client: Arc<dyn HttpClient>, cx: &mut App) -> Self {
134 let state = cx.new(|cx| State {
135 api_key: None,
136 api_key_from_env: false,
137 _subscription: cx.observe_global::<SettingsStore>(|_this: &mut State, cx| {
138 cx.notify();
139 }),
140 });
141
142 Self { http_client, state }
143 }
144
145 fn create_language_model(&self, model: deepseek::Model) -> Arc<dyn LanguageModel> {
146 Arc::new(DeepSeekLanguageModel {
147 id: LanguageModelId::from(model.id().to_string()),
148 model,
149 state: self.state.clone(),
150 http_client: self.http_client.clone(),
151 request_limiter: RateLimiter::new(4),
152 }) as Arc<dyn LanguageModel>
153 }
154}
155
156impl LanguageModelProviderState for DeepSeekLanguageModelProvider {
157 type ObservableEntity = State;
158
159 fn observable_entity(&self) -> Option<Entity<Self::ObservableEntity>> {
160 Some(self.state.clone())
161 }
162}
163
164impl LanguageModelProvider for DeepSeekLanguageModelProvider {
165 fn id(&self) -> LanguageModelProviderId {
166 LanguageModelProviderId(PROVIDER_ID.into())
167 }
168
169 fn name(&self) -> LanguageModelProviderName {
170 LanguageModelProviderName(PROVIDER_NAME.into())
171 }
172
173 fn icon(&self) -> IconName {
174 IconName::AiDeepSeek
175 }
176
177 fn default_model(&self, _cx: &App) -> Option<Arc<dyn LanguageModel>> {
178 Some(self.create_language_model(deepseek::Model::default()))
179 }
180
181 fn default_fast_model(&self, _cx: &App) -> Option<Arc<dyn LanguageModel>> {
182 Some(self.create_language_model(deepseek::Model::default_fast()))
183 }
184
185 fn provided_models(&self, cx: &App) -> Vec<Arc<dyn LanguageModel>> {
186 let mut models = BTreeMap::default();
187
188 models.insert("deepseek-chat", deepseek::Model::Chat);
189 models.insert("deepseek-reasoner", deepseek::Model::Reasoner);
190
191 for available_model in AllLanguageModelSettings::get_global(cx)
192 .deepseek
193 .available_models
194 .iter()
195 {
196 models.insert(
197 &available_model.name,
198 deepseek::Model::Custom {
199 name: available_model.name.clone(),
200 display_name: available_model.display_name.clone(),
201 max_tokens: available_model.max_tokens,
202 max_output_tokens: available_model.max_output_tokens,
203 },
204 );
205 }
206
207 models
208 .into_values()
209 .map(|model| self.create_language_model(model))
210 .collect()
211 }
212
213 fn is_authenticated(&self, cx: &App) -> bool {
214 self.state.read(cx).is_authenticated()
215 }
216
217 fn authenticate(&self, cx: &mut App) -> Task<Result<(), AuthenticateError>> {
218 self.state.update(cx, |state, cx| state.authenticate(cx))
219 }
220
221 fn configuration_view(&self, window: &mut Window, cx: &mut App) -> AnyView {
222 cx.new(|cx| ConfigurationView::new(self.state.clone(), window, cx))
223 .into()
224 }
225
226 fn reset_credentials(&self, cx: &mut App) -> Task<Result<()>> {
227 self.state.update(cx, |state, cx| state.reset_api_key(cx))
228 }
229}
230
231pub struct DeepSeekLanguageModel {
232 id: LanguageModelId,
233 model: deepseek::Model,
234 state: Entity<State>,
235 http_client: Arc<dyn HttpClient>,
236 request_limiter: RateLimiter,
237}
238
239impl DeepSeekLanguageModel {
240 fn stream_completion(
241 &self,
242 request: deepseek::Request,
243 cx: &AsyncApp,
244 ) -> BoxFuture<'static, Result<BoxStream<'static, Result<deepseek::StreamResponse>>>> {
245 let http_client = self.http_client.clone();
246 let Ok((api_key, api_url)) = cx.read_entity(&self.state, |state, cx| {
247 let settings = &AllLanguageModelSettings::get_global(cx).deepseek;
248 (state.api_key.clone(), settings.api_url.clone())
249 }) else {
250 return futures::future::ready(Err(anyhow!("App state dropped"))).boxed();
251 };
252
253 let future = self.request_limiter.stream(async move {
254 let api_key = api_key.context("Missing DeepSeek API Key")?;
255 let request =
256 deepseek::stream_completion(http_client.as_ref(), &api_url, &api_key, request);
257 let response = request.await?;
258 Ok(response)
259 });
260
261 async move { Ok(future.await?.boxed()) }.boxed()
262 }
263}
264
265impl LanguageModel for DeepSeekLanguageModel {
266 fn id(&self) -> LanguageModelId {
267 self.id.clone()
268 }
269
270 fn name(&self) -> LanguageModelName {
271 LanguageModelName::from(self.model.display_name().to_string())
272 }
273
274 fn provider_id(&self) -> LanguageModelProviderId {
275 LanguageModelProviderId(PROVIDER_ID.into())
276 }
277
278 fn provider_name(&self) -> LanguageModelProviderName {
279 LanguageModelProviderName(PROVIDER_NAME.into())
280 }
281
282 fn supports_tools(&self) -> bool {
283 false
284 }
285
286 fn supports_tool_choice(&self, _choice: LanguageModelToolChoice) -> bool {
287 false
288 }
289
290 fn supports_images(&self) -> bool {
291 false
292 }
293
294 fn telemetry_id(&self) -> String {
295 format!("deepseek/{}", self.model.id())
296 }
297
298 fn max_token_count(&self) -> usize {
299 self.model.max_token_count()
300 }
301
302 fn max_output_tokens(&self) -> Option<u32> {
303 self.model.max_output_tokens()
304 }
305
306 fn count_tokens(
307 &self,
308 request: LanguageModelRequest,
309 cx: &App,
310 ) -> BoxFuture<'static, Result<usize>> {
311 cx.background_spawn(async move {
312 let messages = request
313 .messages
314 .into_iter()
315 .map(|message| tiktoken_rs::ChatCompletionRequestMessage {
316 role: match message.role {
317 Role::User => "user".into(),
318 Role::Assistant => "assistant".into(),
319 Role::System => "system".into(),
320 },
321 content: Some(message.string_contents()),
322 name: None,
323 function_call: None,
324 })
325 .collect::<Vec<_>>();
326
327 tiktoken_rs::num_tokens_from_messages("gpt-4", &messages)
328 })
329 .boxed()
330 }
331
332 fn stream_completion(
333 &self,
334 request: LanguageModelRequest,
335 cx: &AsyncApp,
336 ) -> BoxFuture<
337 'static,
338 Result<
339 BoxStream<'static, Result<LanguageModelCompletionEvent, LanguageModelCompletionError>>,
340 >,
341 > {
342 let request = into_deepseek(
343 request,
344 self.model.id().to_string(),
345 self.max_output_tokens(),
346 );
347 let stream = self.stream_completion(request, cx);
348
349 async move {
350 let stream = stream.await?;
351 Ok(stream
352 .map(|result| {
353 result
354 .and_then(|response| {
355 response
356 .choices
357 .first()
358 .context("Empty response")
359 .map(|choice| {
360 choice
361 .delta
362 .content
363 .clone()
364 .unwrap_or_default()
365 .map(LanguageModelCompletionEvent::Text)
366 })
367 })
368 .map_err(LanguageModelCompletionError::Other)
369 })
370 .boxed())
371 }
372 .boxed()
373 }
374}
375
376pub fn into_deepseek(
377 request: LanguageModelRequest,
378 model: String,
379 max_output_tokens: Option<u32>,
380) -> deepseek::Request {
381 let is_reasoner = model == "deepseek-reasoner";
382
383 let len = request.messages.len();
384 let merged_messages =
385 request
386 .messages
387 .into_iter()
388 .fold(Vec::with_capacity(len), |mut acc, msg| {
389 let role = msg.role;
390 let content = msg.string_contents();
391
392 if is_reasoner {
393 if let Some(last_msg) = acc.last_mut() {
394 match (last_msg, role) {
395 (deepseek::RequestMessage::User { content: last }, Role::User) => {
396 last.push(' ');
397 last.push_str(&content);
398 return acc;
399 }
400
401 (
402 deepseek::RequestMessage::Assistant {
403 content: last_content,
404 ..
405 },
406 Role::Assistant,
407 ) => {
408 *last_content = last_content
409 .take()
410 .map(|c| {
411 let mut s =
412 String::with_capacity(c.len() + content.len() + 1);
413 s.push_str(&c);
414 s.push(' ');
415 s.push_str(&content);
416 s
417 })
418 .or(Some(content));
419
420 return acc;
421 }
422 _ => {}
423 }
424 }
425 }
426
427 acc.push(match role {
428 Role::User => deepseek::RequestMessage::User { content },
429 Role::Assistant => deepseek::RequestMessage::Assistant {
430 content: Some(content),
431 tool_calls: Vec::new(),
432 },
433 Role::System => deepseek::RequestMessage::System { content },
434 });
435 acc
436 });
437
438 deepseek::Request {
439 model,
440 messages: merged_messages,
441 stream: true,
442 max_tokens: max_output_tokens,
443 temperature: if is_reasoner {
444 None
445 } else {
446 request.temperature
447 },
448 response_format: None,
449 tools: request
450 .tools
451 .into_iter()
452 .map(|tool| deepseek::ToolDefinition::Function {
453 function: deepseek::FunctionDefinition {
454 name: tool.name,
455 description: Some(tool.description),
456 parameters: Some(tool.input_schema),
457 },
458 })
459 .collect(),
460 }
461}
462
463struct ConfigurationView {
464 api_key_editor: Entity<Editor>,
465 state: Entity<State>,
466 load_credentials_task: Option<Task<()>>,
467}
468
469impl ConfigurationView {
470 fn new(state: Entity<State>, window: &mut Window, cx: &mut Context<Self>) -> Self {
471 let api_key_editor = cx.new(|cx| {
472 let mut editor = Editor::single_line(window, cx);
473 editor.set_placeholder_text("sk-00000000000000000000000000000000", cx);
474 editor
475 });
476
477 cx.observe(&state, |_, _, cx| {
478 cx.notify();
479 })
480 .detach();
481
482 let load_credentials_task = Some(cx.spawn({
483 let state = state.clone();
484 async move |this, cx| {
485 if let Some(task) = state
486 .update(cx, |state, cx| state.authenticate(cx))
487 .log_err()
488 {
489 let _ = task.await;
490 }
491
492 this.update(cx, |this, cx| {
493 this.load_credentials_task = None;
494 cx.notify();
495 })
496 .log_err();
497 }
498 }));
499
500 Self {
501 api_key_editor,
502 state,
503 load_credentials_task,
504 }
505 }
506
507 fn save_api_key(&mut self, _: &menu::Confirm, _window: &mut Window, cx: &mut Context<Self>) {
508 let api_key = self.api_key_editor.read(cx).text(cx);
509 if api_key.is_empty() {
510 return;
511 }
512
513 let state = self.state.clone();
514 cx.spawn(async move |_, cx| {
515 state
516 .update(cx, |state, cx| state.set_api_key(api_key, cx))?
517 .await
518 })
519 .detach_and_log_err(cx);
520
521 cx.notify();
522 }
523
524 fn reset_api_key(&mut self, window: &mut Window, cx: &mut Context<Self>) {
525 self.api_key_editor
526 .update(cx, |editor, cx| editor.set_text("", window, cx));
527
528 let state = self.state.clone();
529 cx.spawn(async move |_, cx| state.update(cx, |state, cx| state.reset_api_key(cx))?.await)
530 .detach_and_log_err(cx);
531
532 cx.notify();
533 }
534
535 fn render_api_key_editor(&self, cx: &mut Context<Self>) -> impl IntoElement {
536 let settings = ThemeSettings::get_global(cx);
537 let text_style = TextStyle {
538 color: cx.theme().colors().text,
539 font_family: settings.ui_font.family.clone(),
540 font_features: settings.ui_font.features.clone(),
541 font_fallbacks: settings.ui_font.fallbacks.clone(),
542 font_size: rems(0.875).into(),
543 font_weight: settings.ui_font.weight,
544 font_style: FontStyle::Normal,
545 line_height: relative(1.3),
546 background_color: None,
547 underline: None,
548 strikethrough: None,
549 white_space: WhiteSpace::Normal,
550 ..Default::default()
551 };
552 EditorElement::new(
553 &self.api_key_editor,
554 EditorStyle {
555 background: cx.theme().colors().editor_background,
556 local_player: cx.theme().players().local(),
557 text: text_style,
558 ..Default::default()
559 },
560 )
561 }
562
563 fn should_render_editor(&self, cx: &mut Context<Self>) -> bool {
564 !self.state.read(cx).is_authenticated()
565 }
566}
567
568impl Render for ConfigurationView {
569 fn render(&mut self, _window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
570 let env_var_set = self.state.read(cx).api_key_from_env;
571
572 if self.load_credentials_task.is_some() {
573 div().child(Label::new("Loading credentials...")).into_any()
574 } else if self.should_render_editor(cx) {
575 v_flex()
576 .size_full()
577 .on_action(cx.listener(Self::save_api_key))
578 .child(Label::new("To use DeepSeek in Zed, you need an API key:"))
579 .child(
580 List::new()
581 .child(InstructionListItem::new(
582 "Get your API key from the",
583 Some("DeepSeek console"),
584 Some("https://platform.deepseek.com/api_keys"),
585 ))
586 .child(InstructionListItem::text_only(
587 "Paste your API key below and hit enter to start using the assistant",
588 )),
589 )
590 .child(
591 h_flex()
592 .w_full()
593 .my_2()
594 .px_2()
595 .py_1()
596 .bg(cx.theme().colors().editor_background)
597 .border_1()
598 .border_color(cx.theme().colors().border)
599 .rounded_sm()
600 .child(self.render_api_key_editor(cx)),
601 )
602 .child(
603 Label::new(format!(
604 "Or set the {} environment variable.",
605 DEEPSEEK_API_KEY_VAR
606 ))
607 .size(LabelSize::Small)
608 .color(Color::Muted),
609 )
610 .into_any()
611 } else {
612 h_flex()
613 .mt_1()
614 .p_1()
615 .justify_between()
616 .rounded_md()
617 .border_1()
618 .border_color(cx.theme().colors().border)
619 .bg(cx.theme().colors().background)
620 .child(
621 h_flex()
622 .gap_1()
623 .child(Icon::new(IconName::Check).color(Color::Success))
624 .child(Label::new(if env_var_set {
625 format!("API key set in {}", DEEPSEEK_API_KEY_VAR)
626 } else {
627 "API key configured".to_string()
628 })),
629 )
630 .child(
631 Button::new("reset-key", "Reset Key")
632 .label_size(LabelSize::Small)
633 .icon(Some(IconName::Trash))
634 .icon_size(IconSize::Small)
635 .icon_position(IconPosition::Start)
636 .disabled(env_var_set)
637 .on_click(
638 cx.listener(|this, _, window, cx| this.reset_api_key(window, cx)),
639 ),
640 )
641 .into_any()
642 }
643 }
644}