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import type {  BrowserNavigationTarget,  EnvironmentId,  PreviewUrlResolution,} from "@t3tools/contracts";import { isLoopbackHost, normalizePreviewUrl } from "@t3tools/shared/preview"; import { readPreparedConnection } from "~/state/session"; const isPrivateNetworkHost = (host: string): boolean => {  const normalized = host.toLowerCase().replace(/^\[|\]$/g, "");  if (normalized === "localhost" || normalized === "::1" || normalized.endsWith(".local")) {    return true;  }  if (normalized.endsWith(".ts.net")) return true;  const parts = normalized.split(".").map(Number);  if (parts.length !== 4 || parts.some((part) => !Number.isInteger(part))) return false;  return (    parts[0] === 10 ||    (parts[0] === 172 && parts[1]! >= 16 && parts[1]! <= 31) ||    (parts[0] === 192 && parts[1] === 168) ||    parts[0] === 127 ||    (parts[0] === 169 && parts[1] === 254)  );}; const isLocalLoopbackHost = (host: string): boolean => {  const normalized = host.toLowerCase().replace(/^\[|\]$/g, "");  return normalized === "localhost" || normalized === "127.0.0.1" || normalized === "::1";}; export function resolveBrowserNavigationTarget(  environmentId: EnvironmentId,  target: BrowserNavigationTarget,): PreviewUrlResolution {  if (target.kind === "url") {    return {      requestedUrl: target.url,      resolvedUrl: target.url,      resolutionKind: "direct",      environmentId,    };  }  const connection = readPreparedConnection(environmentId);  if (!connection) throw new Error(`Environment ${environmentId} is not connected.`);  const environmentUrl = new URL(connection.httpBaseUrl);  if (!isPrivateNetworkHost(environmentUrl.hostname)) {    throw new Error(      "This environment port needs the planned authenticated preview gateway; its server address is not directly private-network reachable.",    );  }  const protocol = target.protocol ?? "http";  const path = target.path?.startsWith("/") ? target.path : `/${target.path ?? ""}`;  const requestedUrl = `${protocol}://localhost:${target.port}${path}`;  const normalizedEnvironmentHost = environmentUrl.hostname.replace(/^\[|\]$/g, "");  const resolvedHost = normalizedEnvironmentHost.includes(":")    ? `[${normalizedEnvironmentHost}]`    : normalizedEnvironmentHost;  const resolved = new URL(path, `${protocol}://${resolvedHost}:${target.port}`);  return {    requestedUrl,    resolvedUrl: resolved.toString(),    resolutionKind:      normalizedEnvironmentHost === "localhost" || normalizedEnvironmentHost === "127.0.0.1"        ? "direct"        : "direct-private-network",    environmentId,  };} export function resolveDiscoveredServerUrl(environmentId: EnvironmentId, rawUrl: string): string {  try {    const normalizedUrl = normalizePreviewUrl(rawUrl);    const parsed = new URL(normalizedUrl);    if (!isLoopbackHost(parsed.hostname)) return normalizedUrl;    const connection = readPreparedConnection(environmentId);    if (!connection) throw new Error(`Environment ${environmentId} is not connected.`);    const environmentUrl = new URL(connection.httpBaseUrl);    if (parsed.hostname !== "0.0.0.0" && isLocalLoopbackHost(environmentUrl.hostname)) {      return normalizedUrl;    }    const port = Number(parsed.port || (parsed.protocol === "https:" ? 443 : 80));    return resolveBrowserNavigationTarget(environmentId, {      kind: "environment-port",      port,      protocol: parsed.protocol === "https:" ? "https" : "http",      path: `${parsed.pathname}${parsed.search}${parsed.hash}`,    }).resolvedUrl;  } catch {    return rawUrl;  }}