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.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 supports_tool_choice(&self, _choice: LanguageModelToolChoice) -> bool {
287 false
288 }
289
290 fn telemetry_id(&self) -> String {
291 format!("deepseek/{}", self.model.id())
292 }
293
294 fn max_token_count(&self) -> usize {
295 self.model.max_token_count()
296 }
297
298 fn max_output_tokens(&self) -> Option<u32> {
299 self.model.max_output_tokens()
300 }
301
302 fn count_tokens(
303 &self,
304 request: LanguageModelRequest,
305 cx: &App,
306 ) -> BoxFuture<'static, Result<usize>> {
307 cx.background_spawn(async move {
308 let messages = request
309 .messages
310 .into_iter()
311 .map(|message| tiktoken_rs::ChatCompletionRequestMessage {
312 role: match message.role {
313 Role::User => "user".into(),
314 Role::Assistant => "assistant".into(),
315 Role::System => "system".into(),
316 },
317 content: Some(message.string_contents()),
318 name: None,
319 function_call: None,
320 })
321 .collect::<Vec<_>>();
322
323 tiktoken_rs::num_tokens_from_messages("gpt-4", &messages)
324 })
325 .boxed()
326 }
327
328 fn stream_completion(
329 &self,
330 request: LanguageModelRequest,
331 cx: &AsyncApp,
332 ) -> BoxFuture<
333 'static,
334 Result<
335 BoxStream<'static, Result<LanguageModelCompletionEvent, LanguageModelCompletionError>>,
336 >,
337 > {
338 let request = into_deepseek(
339 request,
340 self.model.id().to_string(),
341 self.max_output_tokens(),
342 );
343 let stream = self.stream_completion(request, cx);
344
345 async move {
346 let stream = stream.await?;
347 Ok(stream
348 .map(|result| {
349 result
350 .and_then(|response| {
351 response
352 .choices
353 .first()
354 .ok_or_else(|| anyhow!("Empty response"))
355 .map(|choice| {
356 choice
357 .delta
358 .content
359 .clone()
360 .unwrap_or_default()
361 .map(LanguageModelCompletionEvent::Text)
362 })
363 })
364 .map_err(LanguageModelCompletionError::Other)
365 })
366 .boxed())
367 }
368 .boxed()
369 }
370}
371
372pub fn into_deepseek(
373 request: LanguageModelRequest,
374 model: String,
375 max_output_tokens: Option<u32>,
376) -> deepseek::Request {
377 let is_reasoner = model == "deepseek-reasoner";
378
379 let len = request.messages.len();
380 let merged_messages =
381 request
382 .messages
383 .into_iter()
384 .fold(Vec::with_capacity(len), |mut acc, msg| {
385 let role = msg.role;
386 let content = msg.string_contents();
387
388 if is_reasoner {
389 if let Some(last_msg) = acc.last_mut() {
390 match (last_msg, role) {
391 (deepseek::RequestMessage::User { content: last }, Role::User) => {
392 last.push(' ');
393 last.push_str(&content);
394 return acc;
395 }
396
397 (
398 deepseek::RequestMessage::Assistant {
399 content: last_content,
400 ..
401 },
402 Role::Assistant,
403 ) => {
404 *last_content = last_content
405 .take()
406 .map(|c| {
407 let mut s =
408 String::with_capacity(c.len() + content.len() + 1);
409 s.push_str(&c);
410 s.push(' ');
411 s.push_str(&content);
412 s
413 })
414 .or(Some(content));
415
416 return acc;
417 }
418 _ => {}
419 }
420 }
421 }
422
423 acc.push(match role {
424 Role::User => deepseek::RequestMessage::User { content },
425 Role::Assistant => deepseek::RequestMessage::Assistant {
426 content: Some(content),
427 tool_calls: Vec::new(),
428 },
429 Role::System => deepseek::RequestMessage::System { content },
430 });
431 acc
432 });
433
434 deepseek::Request {
435 model,
436 messages: merged_messages,
437 stream: true,
438 max_tokens: max_output_tokens,
439 temperature: if is_reasoner {
440 None
441 } else {
442 request.temperature
443 },
444 response_format: None,
445 tools: request
446 .tools
447 .into_iter()
448 .map(|tool| deepseek::ToolDefinition::Function {
449 function: deepseek::FunctionDefinition {
450 name: tool.name,
451 description: Some(tool.description),
452 parameters: Some(tool.input_schema),
453 },
454 })
455 .collect(),
456 }
457}
458
459struct ConfigurationView {
460 api_key_editor: Entity<Editor>,
461 state: Entity<State>,
462 load_credentials_task: Option<Task<()>>,
463}
464
465impl ConfigurationView {
466 fn new(state: Entity<State>, window: &mut Window, cx: &mut Context<Self>) -> Self {
467 let api_key_editor = cx.new(|cx| {
468 let mut editor = Editor::single_line(window, cx);
469 editor.set_placeholder_text("sk-00000000000000000000000000000000", cx);
470 editor
471 });
472
473 cx.observe(&state, |_, _, cx| {
474 cx.notify();
475 })
476 .detach();
477
478 let load_credentials_task = Some(cx.spawn({
479 let state = state.clone();
480 async move |this, cx| {
481 if let Some(task) = state
482 .update(cx, |state, cx| state.authenticate(cx))
483 .log_err()
484 {
485 let _ = task.await;
486 }
487
488 this.update(cx, |this, cx| {
489 this.load_credentials_task = None;
490 cx.notify();
491 })
492 .log_err();
493 }
494 }));
495
496 Self {
497 api_key_editor,
498 state,
499 load_credentials_task,
500 }
501 }
502
503 fn save_api_key(&mut self, _: &menu::Confirm, _window: &mut Window, cx: &mut Context<Self>) {
504 let api_key = self.api_key_editor.read(cx).text(cx);
505 if api_key.is_empty() {
506 return;
507 }
508
509 let state = self.state.clone();
510 cx.spawn(async move |_, cx| {
511 state
512 .update(cx, |state, cx| state.set_api_key(api_key, cx))?
513 .await
514 })
515 .detach_and_log_err(cx);
516
517 cx.notify();
518 }
519
520 fn reset_api_key(&mut self, window: &mut Window, cx: &mut Context<Self>) {
521 self.api_key_editor
522 .update(cx, |editor, cx| editor.set_text("", window, cx));
523
524 let state = self.state.clone();
525 cx.spawn(async move |_, cx| state.update(cx, |state, cx| state.reset_api_key(cx))?.await)
526 .detach_and_log_err(cx);
527
528 cx.notify();
529 }
530
531 fn render_api_key_editor(&self, cx: &mut Context<Self>) -> impl IntoElement {
532 let settings = ThemeSettings::get_global(cx);
533 let text_style = TextStyle {
534 color: cx.theme().colors().text,
535 font_family: settings.ui_font.family.clone(),
536 font_features: settings.ui_font.features.clone(),
537 font_fallbacks: settings.ui_font.fallbacks.clone(),
538 font_size: rems(0.875).into(),
539 font_weight: settings.ui_font.weight,
540 font_style: FontStyle::Normal,
541 line_height: relative(1.3),
542 background_color: None,
543 underline: None,
544 strikethrough: None,
545 white_space: WhiteSpace::Normal,
546 ..Default::default()
547 };
548 EditorElement::new(
549 &self.api_key_editor,
550 EditorStyle {
551 background: cx.theme().colors().editor_background,
552 local_player: cx.theme().players().local(),
553 text: text_style,
554 ..Default::default()
555 },
556 )
557 }
558
559 fn should_render_editor(&self, cx: &mut Context<Self>) -> bool {
560 !self.state.read(cx).is_authenticated()
561 }
562}
563
564impl Render for ConfigurationView {
565 fn render(&mut self, _window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
566 let env_var_set = self.state.read(cx).api_key_from_env;
567
568 if self.load_credentials_task.is_some() {
569 div().child(Label::new("Loading credentials...")).into_any()
570 } else if self.should_render_editor(cx) {
571 v_flex()
572 .size_full()
573 .on_action(cx.listener(Self::save_api_key))
574 .child(Label::new("To use DeepSeek in Zed, you need an API key:"))
575 .child(
576 List::new()
577 .child(InstructionListItem::new(
578 "Get your API key from the",
579 Some("DeepSeek console"),
580 Some("https://platform.deepseek.com/api_keys"),
581 ))
582 .child(InstructionListItem::text_only(
583 "Paste your API key below and hit enter to start using the assistant",
584 )),
585 )
586 .child(
587 h_flex()
588 .w_full()
589 .my_2()
590 .px_2()
591 .py_1()
592 .bg(cx.theme().colors().editor_background)
593 .border_1()
594 .border_color(cx.theme().colors().border)
595 .rounded_sm()
596 .child(self.render_api_key_editor(cx)),
597 )
598 .child(
599 Label::new(format!(
600 "Or set the {} environment variable.",
601 DEEPSEEK_API_KEY_VAR
602 ))
603 .size(LabelSize::Small)
604 .color(Color::Muted),
605 )
606 .into_any()
607 } else {
608 h_flex()
609 .mt_1()
610 .p_1()
611 .justify_between()
612 .rounded_md()
613 .border_1()
614 .border_color(cx.theme().colors().border)
615 .bg(cx.theme().colors().background)
616 .child(
617 h_flex()
618 .gap_1()
619 .child(Icon::new(IconName::Check).color(Color::Success))
620 .child(Label::new(if env_var_set {
621 format!("API key set in {}", DEEPSEEK_API_KEY_VAR)
622 } else {
623 "API key configured".to_string()
624 })),
625 )
626 .child(
627 Button::new("reset-key", "Reset Key")
628 .label_size(LabelSize::Small)
629 .icon(Some(IconName::Trash))
630 .icon_size(IconSize::Small)
631 .icon_position(IconPosition::Start)
632 .disabled(env_var_set)
633 .on_click(
634 cx.listener(|this, _, window, cx| this.reset_api_key(window, cx)),
635 ),
636 )
637 .into_any()
638 }
639 }
640}