41 lines
1.5 KiB
TypeScript
41 lines
1.5 KiB
TypeScript
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import type { BootstrapResponse } from "./types";
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/**
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* Fetch a short-lived token + the WebSocket path from the gateway's
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* ``/webui/bootstrap`` endpoint. Localhost-only on the server side.
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*/
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export async function fetchBootstrap(
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baseUrl: string = "",
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): Promise<BootstrapResponse> {
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const res = await fetch(`${baseUrl}/webui/bootstrap`, {
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method: "GET",
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credentials: "same-origin",
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});
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if (!res.ok) {
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throw new Error(`bootstrap failed: HTTP ${res.status}`);
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}
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const body = (await res.json()) as BootstrapResponse;
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if (!body.token || !body.ws_path) {
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throw new Error("bootstrap response missing token or ws_path");
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}
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return body;
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}
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/** Derive a WebSocket URL from the current window location and the server-provided path.
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*
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* Keeps the path segment exactly as the server registered it: the root ``/``
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* stays ``/`` and non-root paths are not given an extra trailing slash. This
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* matters because some WS servers dispatch handshakes based on the literal
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* path, not a normalised form.
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*/
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export function deriveWsUrl(wsPath: string, token: string): string {
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const path = wsPath && wsPath.startsWith("/") ? wsPath : `/${wsPath || ""}`;
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const query = `?token=${encodeURIComponent(token)}`;
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if (typeof window === "undefined") {
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return `ws://127.0.0.1:8765${path}${query}`;
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}
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const scheme = window.location.protocol === "https:" ? "wss" : "ws";
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const host = window.location.host;
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return `${scheme}://${host}${path}${query}`;
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}
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