import { getPairingTokenFromUrl } from "../../pairingUrl"; export interface ResolvedRemotePairingTarget {  readonly credential: string;  readonly httpBaseUrl: string;  readonly wsBaseUrl: string;} function normalizeRemoteBaseUrl(rawValue: string): URL {  const trimmed = rawValue.trim();  if (!trimmed) {    throw new Error("Enter a backend URL.");  }   const normalizedInput =    /^[a-zA-Z][a-zA-Z\d+-]*:\/\//.test(trimmed) || trimmed.startsWith("//")      ? trimmed      : `https://${trimmed}`;  const url = new URL(normalizedInput, window.location.origin);  url.pathname = "/";  url.search = "";  url.hash = "";  return url;} function toHttpBaseUrl(url: URL): string {  const next = new URL(url.toString());  if (next.protocol === "ws:") {    next.protocol = "http:";  } else if (next.protocol === "wss:") {    next.protocol = "https:";  }  next.pathname = "/";  next.search = "";  next.hash = "";  return next.toString();} function toWsBaseUrl(url: URL): string {  const next = new URL(url.toString());  if (next.protocol === "http:") {    next.protocol = "ws:";  } else if (next.protocol === "https:") {    next.protocol = "wss:";  }  next.pathname = "/";  next.search = "";  next.hash = "";  return next.toString();} export function resolveRemotePairingTarget(input: {  readonly pairingUrl?: string;  readonly host?: string;  readonly pairingCode?: string;}): ResolvedRemotePairingTarget {  const pairingUrl = input.pairingUrl?.trim() ?? "";  if (pairingUrl.length > 0) {    const url = new URL(pairingUrl, window.location.origin);    const credential = getPairingTokenFromUrl(url) ?? "";    if (!credential) {      throw new Error("Pairing URL is missing its token.");    }    return {      credential,      httpBaseUrl: toHttpBaseUrl(url),      wsBaseUrl: toWsBaseUrl(url),    };  }   const host = input.host?.trim() ?? "";  const pairingCode = input.pairingCode?.trim() ?? "";  if (!host) {    throw new Error("Enter a backend URL.");  }  if (!pairingCode) {    throw new Error("Enter a pairing code.");  }   const normalizedHost = normalizeRemoteBaseUrl(host);  return {    credential: pairingCode,    httpBaseUrl: toHttpBaseUrl(normalizedHost),    wsBaseUrl: toWsBaseUrl(normalizedHost),  };}