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 fn use_any_tool(
361 &self,
362 request: LanguageModelRequest,
363 name: String,
364 description: String,
365 schema: serde_json::Value,
366 cx: &AsyncApp,
367 ) -> BoxFuture<'static, Result<futures::stream::BoxStream<'static, Result<String>>>> {
368 let mut deepseek_request = into_deepseek(
369 request,
370 self.model.id().to_string(),
371 self.max_output_tokens(),
372 );
373
374 deepseek_request.tools = vec![deepseek::ToolDefinition::Function {
375 function: deepseek::FunctionDefinition {
376 name: name.clone(),
377 description: Some(description),
378 parameters: Some(schema),
379 },
380 }];
381
382 let response_stream = self.stream_completion(deepseek_request, cx);
383
384 self.request_limiter
385 .run(async move {
386 let stream = response_stream.await?;
387
388 let tool_args_stream = stream
389 .filter_map(move |response| async move {
390 match response {
391 Ok(response) => {
392 for choice in response.choices {
393 if let Some(tool_calls) = choice.delta.tool_calls {
394 for tool_call in tool_calls {
395 if let Some(function) = tool_call.function {
396 if let Some(args) = function.arguments {
397 return Some(Ok(args));
398 }
399 }
400 }
401 }
402 }
403 None
404 }
405 Err(e) => Some(Err(e)),
406 }
407 })
408 .boxed();
409
410 Ok(tool_args_stream)
411 })
412 .boxed()
413 }
414}
415
416pub fn into_deepseek(
417 request: LanguageModelRequest,
418 model: String,
419 max_output_tokens: Option<u32>,
420) -> deepseek::Request {
421 let is_reasoner = model == "deepseek-reasoner";
422
423 let len = request.messages.len();
424 let merged_messages =
425 request
426 .messages
427 .into_iter()
428 .fold(Vec::with_capacity(len), |mut acc, msg| {
429 let role = msg.role;
430 let content = msg.string_contents();
431
432 if is_reasoner {
433 if let Some(last_msg) = acc.last_mut() {
434 match (last_msg, role) {
435 (deepseek::RequestMessage::User { content: last }, Role::User) => {
436 last.push(' ');
437 last.push_str(&content);
438 return acc;
439 }
440
441 (
442 deepseek::RequestMessage::Assistant {
443 content: last_content,
444 ..
445 },
446 Role::Assistant,
447 ) => {
448 *last_content = last_content
449 .take()
450 .map(|c| {
451 let mut s =
452 String::with_capacity(c.len() + content.len() + 1);
453 s.push_str(&c);
454 s.push(' ');
455 s.push_str(&content);
456 s
457 })
458 .or(Some(content));
459
460 return acc;
461 }
462 _ => {}
463 }
464 }
465 }
466
467 acc.push(match role {
468 Role::User => deepseek::RequestMessage::User { content },
469 Role::Assistant => deepseek::RequestMessage::Assistant {
470 content: Some(content),
471 tool_calls: Vec::new(),
472 },
473 Role::System => deepseek::RequestMessage::System { content },
474 });
475 acc
476 });
477
478 deepseek::Request {
479 model,
480 messages: merged_messages,
481 stream: true,
482 max_tokens: max_output_tokens,
483 temperature: if is_reasoner {
484 None
485 } else {
486 request.temperature
487 },
488 response_format: None,
489 tools: request
490 .tools
491 .into_iter()
492 .map(|tool| deepseek::ToolDefinition::Function {
493 function: deepseek::FunctionDefinition {
494 name: tool.name,
495 description: Some(tool.description),
496 parameters: Some(tool.input_schema),
497 },
498 })
499 .collect(),
500 }
501}
502
503struct ConfigurationView {
504 api_key_editor: Entity<Editor>,
505 state: Entity<State>,
506 load_credentials_task: Option<Task<()>>,
507}
508
509impl ConfigurationView {
510 fn new(state: Entity<State>, window: &mut Window, cx: &mut Context<Self>) -> Self {
511 let api_key_editor = cx.new(|cx| {
512 let mut editor = Editor::single_line(window, cx);
513 editor.set_placeholder_text("sk-00000000000000000000000000000000", cx);
514 editor
515 });
516
517 cx.observe(&state, |_, _, cx| {
518 cx.notify();
519 })
520 .detach();
521
522 let load_credentials_task = Some(cx.spawn({
523 let state = state.clone();
524 async move |this, cx| {
525 if let Some(task) = state
526 .update(cx, |state, cx| state.authenticate(cx))
527 .log_err()
528 {
529 let _ = task.await;
530 }
531
532 this.update(cx, |this, cx| {
533 this.load_credentials_task = None;
534 cx.notify();
535 })
536 .log_err();
537 }
538 }));
539
540 Self {
541 api_key_editor,
542 state,
543 load_credentials_task,
544 }
545 }
546
547 fn save_api_key(&mut self, _: &menu::Confirm, _window: &mut Window, cx: &mut Context<Self>) {
548 let api_key = self.api_key_editor.read(cx).text(cx);
549 if api_key.is_empty() {
550 return;
551 }
552
553 let state = self.state.clone();
554 cx.spawn(async move |_, cx| {
555 state
556 .update(cx, |state, cx| state.set_api_key(api_key, cx))?
557 .await
558 })
559 .detach_and_log_err(cx);
560
561 cx.notify();
562 }
563
564 fn reset_api_key(&mut self, window: &mut Window, cx: &mut Context<Self>) {
565 self.api_key_editor
566 .update(cx, |editor, cx| editor.set_text("", window, cx));
567
568 let state = self.state.clone();
569 cx.spawn(async move |_, cx| state.update(cx, |state, cx| state.reset_api_key(cx))?.await)
570 .detach_and_log_err(cx);
571
572 cx.notify();
573 }
574
575 fn render_api_key_editor(&self, cx: &mut Context<Self>) -> impl IntoElement {
576 let settings = ThemeSettings::get_global(cx);
577 let text_style = TextStyle {
578 color: cx.theme().colors().text,
579 font_family: settings.ui_font.family.clone(),
580 font_features: settings.ui_font.features.clone(),
581 font_fallbacks: settings.ui_font.fallbacks.clone(),
582 font_size: rems(0.875).into(),
583 font_weight: settings.ui_font.weight,
584 font_style: FontStyle::Normal,
585 line_height: relative(1.3),
586 background_color: None,
587 underline: None,
588 strikethrough: None,
589 white_space: WhiteSpace::Normal,
590 ..Default::default()
591 };
592 EditorElement::new(
593 &self.api_key_editor,
594 EditorStyle {
595 background: cx.theme().colors().editor_background,
596 local_player: cx.theme().players().local(),
597 text: text_style,
598 ..Default::default()
599 },
600 )
601 }
602
603 fn should_render_editor(&self, cx: &mut Context<Self>) -> bool {
604 !self.state.read(cx).is_authenticated()
605 }
606}
607
608impl Render for ConfigurationView {
609 fn render(&mut self, _window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
610 let env_var_set = self.state.read(cx).api_key_from_env;
611
612 if self.load_credentials_task.is_some() {
613 div().child(Label::new("Loading credentials...")).into_any()
614 } else if self.should_render_editor(cx) {
615 v_flex()
616 .size_full()
617 .on_action(cx.listener(Self::save_api_key))
618 .child(Label::new("To use DeepSeek in Zed, you need an API key:"))
619 .child(
620 List::new()
621 .child(InstructionListItem::new(
622 "Get your API key from the",
623 Some("DeepSeek console"),
624 Some("https://platform.deepseek.com/api_keys"),
625 ))
626 .child(InstructionListItem::text_only(
627 "Paste your API key below and hit enter to start using the assistant",
628 )),
629 )
630 .child(
631 h_flex()
632 .w_full()
633 .my_2()
634 .px_2()
635 .py_1()
636 .bg(cx.theme().colors().editor_background)
637 .border_1()
638 .border_color(cx.theme().colors().border_variant)
639 .rounded_sm()
640 .child(self.render_api_key_editor(cx)),
641 )
642 .child(
643 Label::new(format!(
644 "Or set the {} environment variable.",
645 DEEPSEEK_API_KEY_VAR
646 ))
647 .size(LabelSize::Small)
648 .color(Color::Muted),
649 )
650 .into_any()
651 } else {
652 h_flex()
653 .size_full()
654 .justify_between()
655 .child(
656 h_flex()
657 .gap_1()
658 .child(Icon::new(IconName::Check).color(Color::Success))
659 .child(Label::new(if env_var_set {
660 format!("API key set in {}", DEEPSEEK_API_KEY_VAR)
661 } else {
662 "API key configured".to_string()
663 })),
664 )
665 .child(
666 Button::new("reset-key", "Reset")
667 .icon(IconName::Trash)
668 .disabled(env_var_set)
669 .on_click(
670 cx.listener(|this, _, window, cx| this.reset_api_key(window, cx)),
671 ),
672 )
673 .into_any()
674 }
675 }
676}