Archived
80 lines
2.8 KiB
TypeScript
80 lines
2.8 KiB
TypeScript
import { getApiProvider, type Api, type AssistantMessage, type Model } from "@earendil-works/pi-ai";
|
|
import type { ModelRegistry } from "@earendil-works/pi-coding-agent";
|
|
|
|
const SESSION_NAME_TIMEOUT_MS = 10_000;
|
|
const SESSION_NAME_MAX_INPUT_CHARS = 4_000;
|
|
const SESSION_NAME_MAX_LENGTH = 60;
|
|
const FALLBACK_SESSION_NAME_MAX_WORDS = 6;
|
|
|
|
export async function generateShortSessionName<TApi extends Api>(modelRegistry: ModelRegistry, model: Model<TApi>, firstMessage: string): Promise<string | undefined> {
|
|
const provider = getApiProvider(model.api);
|
|
if (provider === undefined) return undefined;
|
|
|
|
const auth = await modelRegistry.getApiKeyAndHeaders(model);
|
|
if (!auth.ok) return undefined;
|
|
|
|
const stream = provider.streamSimple(
|
|
model,
|
|
{
|
|
systemPrompt: "Generate a concise title for a coding-agent chat session. Return only the title, with no quotes or punctuation wrapper.",
|
|
messages: [{
|
|
role: "user",
|
|
content: `Create a 2-6 word title for this request:\n\n${truncateInput(firstMessage)}`,
|
|
timestamp: Date.now(),
|
|
}],
|
|
},
|
|
{
|
|
maxTokens: 24,
|
|
reasoning: "minimal",
|
|
signal: AbortSignal.timeout(SESSION_NAME_TIMEOUT_MS),
|
|
...(auth.apiKey === undefined ? {} : { apiKey: auth.apiKey }),
|
|
...(auth.headers === undefined ? {} : { headers: auth.headers }),
|
|
},
|
|
);
|
|
|
|
let streamedText = "";
|
|
let finalMessage: AssistantMessage | undefined;
|
|
for await (const event of stream) {
|
|
if (event.type === "text_delta") streamedText += event.delta;
|
|
if (event.type === "done") finalMessage = event.message;
|
|
if (event.type === "error") return undefined;
|
|
}
|
|
|
|
return cleanSessionName(finalMessage === undefined ? streamedText : textFromAssistant(finalMessage));
|
|
}
|
|
|
|
export function fallbackSessionName(firstMessage: unknown): string | undefined {
|
|
if (typeof firstMessage !== "string") return undefined;
|
|
|
|
return cleanSessionName(firstMessage
|
|
.replace(/<skill name="[^"]+" location="[^"]+">[\s\S]*?<\/skill>/g, "")
|
|
.replace(/```[\s\S]*?```/g, " ")
|
|
.replace(/[`*_#[\](){}<>]/g, " ")
|
|
.split(/\s+/)
|
|
.filter(Boolean)
|
|
.slice(0, FALLBACK_SESSION_NAME_MAX_WORDS)
|
|
.join(" "));
|
|
}
|
|
|
|
export function cleanSessionName(value: string): string | undefined {
|
|
const title = (value.split("\n", 1)[0] ?? "")
|
|
.replace(/^\s*(title|session title)\s*:\s*/i, "")
|
|
.replace(/^\s*["'`]+|["'`.]+\s*$/g, "")
|
|
.replace(/\s+/g, " ")
|
|
.trim()
|
|
.slice(0, SESSION_NAME_MAX_LENGTH)
|
|
.trim();
|
|
return title === "" ? undefined : title;
|
|
}
|
|
|
|
function textFromAssistant(message: AssistantMessage): string {
|
|
return message.content
|
|
.filter((part) => part.type === "text")
|
|
.map((part) => part.text)
|
|
.join("");
|
|
}
|
|
|
|
function truncateInput(value: string): string {
|
|
return value.length <= SESSION_NAME_MAX_INPUT_CHARS ? value : `${value.slice(0, SESSION_NAME_MAX_INPUT_CHARS)}…`;
|
|
}
|