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|
use super::*;
use anyhow::{anyhow, Result};
use reqwest::{Client as ReqwestClient, RequestBuilder};
use serde::Deserialize;
use serde_json::{json, Value};
const CHAT_COMPLETIONS_API_URL: &str = "https://api.reka.ai/v1/chat";
#[derive(Debug, Clone, Deserialize, Default)]
pub struct RekaConfig {
pub name: Option<String>,
pub api_key: Option<String>,
#[serde(default)]
pub models: Vec<ModelData>,
pub patches: Option<ModelPatches>,
pub extra: Option<ExtraConfig>,
}
impl RekaClient {
config_get_fn!(api_key, get_api_key);
pub const PROMPTS: [PromptAction<'static>; 1] =
[("api_key", "API Key:", true, PromptKind::String)];
fn chat_completions_builder(
&self,
client: &ReqwestClient,
data: ChatCompletionsData,
) -> Result<RequestBuilder> {
let api_key = self.get_api_key()?;
let mut body = build_chat_completions_body(data, &self.model);
self.patch_chat_completions_body(&mut body);
let url = CHAT_COMPLETIONS_API_URL;
debug!("Reka Chat Completions Request: {url} {body}");
let builder = client.post(url).header("x-api-key", api_key).json(&body);
Ok(builder)
}
}
impl_client_trait!(
RekaClient,
chat_completions,
chat_completions_streaming
);
async fn chat_completions(builder: RequestBuilder) -> Result<ChatCompletionsOutput> {
let res = builder.send().await?;
let status = res.status();
let data: Value = res.json().await?;
if !status.is_success() {
catch_error(&data, status.as_u16())?;
}
debug!("non-stream-data: {data}");
extract_chat_completions(&data)
}
async fn chat_completions_streaming(
builder: RequestBuilder,
handler: &mut SseHandler,
) -> Result<()> {
let mut prev_text = String::new();
let handle = |message: SseMmessage| -> Result<bool> {
let data: Value = serde_json::from_str(&message.data)?;
debug!("stream-data: {data}");
if let Some(text) = data["responses"][0]["chunk"]["content"].as_str() {
let delta_text = &text[prev_text.len()..];
prev_text = text.to_string();
handler.text(delta_text)?;
}
Ok(false)
};
sse_stream(builder, handle).await
}
fn build_chat_completions_body(data: ChatCompletionsData, model: &Model) -> Value {
let ChatCompletionsData {
mut messages,
temperature,
top_p,
functions: _,
stream,
} = data;
patch_system_message(&mut messages);
let mut body = json!({
"model": &model.name(),
"messages": messages,
});
if let Some(v) = model.max_tokens_param() {
body["max_tokens"] = v.into();
}
if let Some(v) = temperature {
body["temperature"] = v.into();
}
if let Some(v) = top_p {
body["top_p"] = v.into();
}
if stream {
body["stream"] = true.into();
}
body
}
fn extract_chat_completions(data: &Value) -> Result<ChatCompletionsOutput> {
let text = data["responses"][0]["message"]["content"].as_str().ok_or_else(|| anyhow!("Invalid response data: {data}"))?;
let output = ChatCompletionsOutput {
text: text.to_string(),
tool_calls: vec![],
id: data["id"].as_str().map(|v| v.to_string()),
input_tokens: data["usage"]["input_tokens"].as_u64(),
output_tokens: data["usage"]["output_tokens"].as_u64(),
};
Ok(output)
}
|
