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