1use std::str::FromStr;
2use std::sync::Arc;
3
4use anyhow::Context as _;
5use serde::{Deserialize, Serialize};
6use strum::{Display, EnumIter, EnumString};
7use uuid::Uuid;
8
9/// The name of the header used to indicate which version of Zed the client is running.
10pub const ZED_VERSION_HEADER_NAME: &str = "x-zed-version";
11
12/// The name of the header used to indicate when a request failed due to an
13/// expired LLM token.
14///
15/// The client may use this as a signal to refresh the token.
16pub const EXPIRED_LLM_TOKEN_HEADER_NAME: &str = "x-zed-expired-token";
17
18/// The name of the header used to indicate what plan the user is currently on.
19pub const CURRENT_PLAN_HEADER_NAME: &str = "x-zed-plan";
20
21/// The name of the header used to indicate the usage limit for model requests.
22pub const MODEL_REQUESTS_USAGE_LIMIT_HEADER_NAME: &str = "x-zed-model-requests-usage-limit";
23
24/// The name of the header used to indicate the usage amount for model requests.
25pub const MODEL_REQUESTS_USAGE_AMOUNT_HEADER_NAME: &str = "x-zed-model-requests-usage-amount";
26
27/// The name of the header used to indicate the usage limit for edit predictions.
28pub const EDIT_PREDICTIONS_USAGE_LIMIT_HEADER_NAME: &str = "x-zed-edit-predictions-usage-limit";
29
30/// The name of the header used to indicate the usage amount for edit predictions.
31pub const EDIT_PREDICTIONS_USAGE_AMOUNT_HEADER_NAME: &str = "x-zed-edit-predictions-usage-amount";
32
33/// The name of the header used to indicate the resource for which the subscription limit has been reached.
34pub const SUBSCRIPTION_LIMIT_RESOURCE_HEADER_NAME: &str = "x-zed-subscription-limit-resource";
35
36pub const MODEL_REQUESTS_RESOURCE_HEADER_VALUE: &str = "model_requests";
37pub const EDIT_PREDICTIONS_RESOURCE_HEADER_VALUE: &str = "edit_predictions";
38
39/// The name of the header used to indicate that the maximum number of consecutive tool uses has been reached.
40pub const TOOL_USE_LIMIT_REACHED_HEADER_NAME: &str = "x-zed-tool-use-limit-reached";
41
42/// The name of the header used to indicate the the minimum required Zed version.
43///
44/// This can be used to force a Zed upgrade in order to continue communicating
45/// with the LLM service.
46pub const MINIMUM_REQUIRED_VERSION_HEADER_NAME: &str = "x-zed-minimum-required-version";
47
48/// The name of the header used by the client to indicate to the server that it supports receiving status messages.
49pub const CLIENT_SUPPORTS_STATUS_MESSAGES_HEADER_NAME: &str =
50 "x-zed-client-supports-status-messages";
51
52/// The name of the header used by the server to indicate to the client that it supports sending status messages.
53pub const SERVER_SUPPORTS_STATUS_MESSAGES_HEADER_NAME: &str =
54 "x-zed-server-supports-status-messages";
55
56#[derive(Debug, PartialEq, Clone, Copy, Serialize, Deserialize)]
57#[serde(rename_all = "snake_case")]
58pub enum UsageLimit {
59 Limited(i32),
60 Unlimited,
61}
62
63impl FromStr for UsageLimit {
64 type Err = anyhow::Error;
65
66 fn from_str(value: &str) -> Result<Self, Self::Err> {
67 match value {
68 "unlimited" => Ok(Self::Unlimited),
69 limit => limit
70 .parse::<i32>()
71 .map(Self::Limited)
72 .context("failed to parse limit"),
73 }
74 }
75}
76
77#[derive(Debug, Clone, Copy, Default, PartialEq, Serialize, Deserialize)]
78#[serde(rename_all = "snake_case")]
79pub enum Plan {
80 #[default]
81 #[serde(alias = "Free")]
82 ZedFree,
83 #[serde(alias = "ZedPro")]
84 ZedPro,
85 #[serde(alias = "ZedProTrial")]
86 ZedProTrial,
87}
88
89impl Plan {
90 pub fn as_str(&self) -> &'static str {
91 match self {
92 Plan::ZedFree => "zed_free",
93 Plan::ZedPro => "zed_pro",
94 Plan::ZedProTrial => "zed_pro_trial",
95 }
96 }
97
98 pub fn model_requests_limit(&self) -> UsageLimit {
99 match self {
100 Plan::ZedPro => UsageLimit::Limited(500),
101 Plan::ZedProTrial => UsageLimit::Limited(150),
102 Plan::ZedFree => UsageLimit::Limited(50),
103 }
104 }
105
106 pub fn edit_predictions_limit(&self) -> UsageLimit {
107 match self {
108 Plan::ZedPro => UsageLimit::Unlimited,
109 Plan::ZedProTrial => UsageLimit::Unlimited,
110 Plan::ZedFree => UsageLimit::Limited(2_000),
111 }
112 }
113}
114
115impl FromStr for Plan {
116 type Err = anyhow::Error;
117
118 fn from_str(value: &str) -> Result<Self, Self::Err> {
119 match value {
120 "zed_free" => Ok(Plan::ZedFree),
121 "zed_pro" => Ok(Plan::ZedPro),
122 "zed_pro_trial" => Ok(Plan::ZedProTrial),
123 plan => Err(anyhow::anyhow!("invalid plan: {plan:?}")),
124 }
125 }
126}
127
128#[derive(
129 Debug, PartialEq, Eq, Hash, Clone, Copy, Serialize, Deserialize, EnumString, EnumIter, Display,
130)]
131#[serde(rename_all = "snake_case")]
132#[strum(serialize_all = "snake_case")]
133pub enum LanguageModelProvider {
134 Anthropic,
135 OpenAi,
136 Google,
137}
138
139#[derive(Debug, Clone, Serialize, Deserialize)]
140pub struct PredictEditsBody {
141 #[serde(skip_serializing_if = "Option::is_none", default)]
142 pub outline: Option<String>,
143 pub input_events: String,
144 pub input_excerpt: String,
145 #[serde(skip_serializing_if = "Option::is_none", default)]
146 pub speculated_output: Option<String>,
147 /// Whether the user provided consent for sampling this interaction.
148 #[serde(default, alias = "data_collection_permission")]
149 pub can_collect_data: bool,
150 #[serde(skip_serializing_if = "Option::is_none", default)]
151 pub diagnostic_groups: Option<Vec<(String, serde_json::Value)>>,
152 /// Info about the git repository state, only present when can_collect_data is true.
153 #[serde(skip_serializing_if = "Option::is_none", default)]
154 pub git_info: Option<PredictEditsGitInfo>,
155 #[serde(skip_serializing_if = "Option::is_none", default)]
156 pub recent_files: Option<Vec<PredictEditsRecentFile>>,
157}
158
159#[derive(Debug, Clone, Serialize, Deserialize)]
160pub struct PredictEditsGitInfo {
161 /// SHA of git HEAD commit at time of prediction.
162 #[serde(skip_serializing_if = "Option::is_none", default)]
163 pub head_sha: Option<String>,
164 /// URL of the remote called `origin`.
165 #[serde(skip_serializing_if = "Option::is_none", default)]
166 pub remote_origin_url: Option<String>,
167 /// URL of the remote called `upstream`.
168 #[serde(skip_serializing_if = "Option::is_none", default)]
169 pub remote_upstream_url: Option<String>,
170}
171
172#[derive(Debug, Clone, Serialize, Deserialize)]
173pub struct PredictEditsRecentFile {
174 pub repo_path: String,
175 pub active_to_now_ms: u32,
176}
177
178#[derive(Debug, Clone, Serialize, Deserialize)]
179pub struct PredictEditsResponse {
180 pub request_id: Uuid,
181 pub output_excerpt: String,
182}
183
184#[derive(Debug, Clone, Serialize, Deserialize)]
185pub struct AcceptEditPredictionBody {
186 pub request_id: Uuid,
187}
188
189#[derive(Debug, PartialEq, Eq, PartialOrd, Ord, Hash, Clone, Copy, Serialize, Deserialize)]
190#[serde(rename_all = "snake_case")]
191pub enum CompletionMode {
192 Normal,
193 Max,
194}
195
196#[derive(Debug, PartialEq, Eq, PartialOrd, Ord, Hash, Clone, Copy, Serialize, Deserialize)]
197#[serde(rename_all = "snake_case")]
198pub enum CompletionIntent {
199 UserPrompt,
200 ToolResults,
201 ThreadSummarization,
202 ThreadContextSummarization,
203 CreateFile,
204 EditFile,
205 InlineAssist,
206 TerminalInlineAssist,
207 GenerateGitCommitMessage,
208}
209
210#[derive(Debug, Serialize, Deserialize)]
211pub struct CompletionBody {
212 #[serde(skip_serializing_if = "Option::is_none", default)]
213 pub thread_id: Option<String>,
214 #[serde(skip_serializing_if = "Option::is_none", default)]
215 pub prompt_id: Option<String>,
216 #[serde(skip_serializing_if = "Option::is_none", default)]
217 pub intent: Option<CompletionIntent>,
218 #[serde(skip_serializing_if = "Option::is_none", default)]
219 pub mode: Option<CompletionMode>,
220 pub provider: LanguageModelProvider,
221 pub model: String,
222 pub provider_request: serde_json::Value,
223}
224
225#[derive(Debug, PartialEq, Clone, Serialize, Deserialize)]
226#[serde(rename_all = "snake_case")]
227pub enum CompletionRequestStatus {
228 Queued {
229 position: usize,
230 },
231 Started,
232 Failed {
233 code: String,
234 message: String,
235 request_id: Uuid,
236 /// Retry duration in seconds.
237 retry_after: Option<f64>,
238 },
239 UsageUpdated {
240 amount: usize,
241 limit: UsageLimit,
242 },
243 ToolUseLimitReached,
244}
245
246#[derive(Serialize, Deserialize)]
247#[serde(rename_all = "snake_case")]
248pub enum CompletionEvent<T> {
249 Status(CompletionRequestStatus),
250 Event(T),
251}
252
253impl<T> CompletionEvent<T> {
254 pub fn into_status(self) -> Option<CompletionRequestStatus> {
255 match self {
256 Self::Status(status) => Some(status),
257 Self::Event(_) => None,
258 }
259 }
260
261 pub fn into_event(self) -> Option<T> {
262 match self {
263 Self::Event(event) => Some(event),
264 Self::Status(_) => None,
265 }
266 }
267}
268
269#[derive(Serialize, Deserialize)]
270pub struct WebSearchBody {
271 pub query: String,
272}
273
274#[derive(Debug, Serialize, Deserialize, Clone)]
275pub struct WebSearchResponse {
276 pub results: Vec<WebSearchResult>,
277}
278
279#[derive(Debug, Serialize, Deserialize, Clone)]
280pub struct WebSearchResult {
281 pub title: String,
282 pub url: String,
283 pub text: String,
284}
285
286#[derive(Serialize, Deserialize)]
287pub struct CountTokensBody {
288 pub provider: LanguageModelProvider,
289 pub model: String,
290 pub provider_request: serde_json::Value,
291}
292
293#[derive(Serialize, Deserialize)]
294pub struct CountTokensResponse {
295 pub tokens: usize,
296}
297
298#[derive(Debug, PartialEq, Eq, Hash, Clone, Serialize, Deserialize)]
299pub struct LanguageModelId(pub Arc<str>);
300
301impl std::fmt::Display for LanguageModelId {
302 fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
303 write!(f, "{}", self.0)
304 }
305}
306
307#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
308pub struct LanguageModel {
309 pub provider: LanguageModelProvider,
310 pub id: LanguageModelId,
311 pub display_name: String,
312 pub max_token_count: usize,
313 pub max_token_count_in_max_mode: Option<usize>,
314 pub max_output_tokens: usize,
315 pub supports_tools: bool,
316 pub supports_images: bool,
317 pub supports_thinking: bool,
318 pub supports_max_mode: bool,
319}
320
321#[derive(Debug, Serialize, Deserialize)]
322pub struct ListModelsResponse {
323 pub models: Vec<LanguageModel>,
324 pub default_model: LanguageModelId,
325 pub default_fast_model: LanguageModelId,
326 pub recommended_models: Vec<LanguageModelId>,
327}
328
329#[derive(Debug, Serialize, Deserialize)]
330pub struct GetSubscriptionResponse {
331 pub plan: Plan,
332 pub usage: Option<CurrentUsage>,
333}
334
335#[derive(Debug, PartialEq, Serialize, Deserialize)]
336pub struct CurrentUsage {
337 pub model_requests: UsageData,
338 pub edit_predictions: UsageData,
339}
340
341#[derive(Debug, PartialEq, Serialize, Deserialize)]
342pub struct UsageData {
343 pub used: u32,
344 pub limit: UsageLimit,
345}
346
347#[cfg(test)]
348mod tests {
349 use pretty_assertions::assert_eq;
350 use serde_json::json;
351
352 use super::*;
353
354 #[test]
355 fn test_plan_deserialize_snake_case() {
356 let plan = serde_json::from_value::<Plan>(json!("zed_free")).unwrap();
357 assert_eq!(plan, Plan::ZedFree);
358
359 let plan = serde_json::from_value::<Plan>(json!("zed_pro")).unwrap();
360 assert_eq!(plan, Plan::ZedPro);
361
362 let plan = serde_json::from_value::<Plan>(json!("zed_pro_trial")).unwrap();
363 assert_eq!(plan, Plan::ZedProTrial);
364 }
365
366 #[test]
367 fn test_plan_deserialize_aliases() {
368 let plan = serde_json::from_value::<Plan>(json!("Free")).unwrap();
369 assert_eq!(plan, Plan::ZedFree);
370
371 let plan = serde_json::from_value::<Plan>(json!("ZedPro")).unwrap();
372 assert_eq!(plan, Plan::ZedPro);
373
374 let plan = serde_json::from_value::<Plan>(json!("ZedProTrial")).unwrap();
375 assert_eq!(plan, Plan::ZedProTrial);
376 }
377
378 #[test]
379 fn test_usage_limit_from_str() {
380 let limit = UsageLimit::from_str("unlimited").unwrap();
381 assert!(matches!(limit, UsageLimit::Unlimited));
382
383 let limit = UsageLimit::from_str(&0.to_string()).unwrap();
384 assert!(matches!(limit, UsageLimit::Limited(0)));
385
386 let limit = UsageLimit::from_str(&50.to_string()).unwrap();
387 assert!(matches!(limit, UsageLimit::Limited(50)));
388
389 for value in ["not_a_number", "50xyz"] {
390 let limit = UsageLimit::from_str(value);
391 assert!(limit.is_err());
392 }
393 }
394}