// Transport facade. The rest of the app (inbox-service, Messages) imports
// send/poll/stream/decrypt from here and never learns which pipe carries
// the bytes. Both transports expose an identical surface and both ship the
// same sealed envelope from crypto.ts — only the delivery mechanism differs.
//
//   VITE_TRANSPORT=server  (default) → kez-chat server inbox over HTTP/SSE
//   VITE_TRANSPORT=nostr            → Nostr relays
//
// Set it in .env / .env.local. Switching transports is build-time; there's
// no reason to flip it at runtime and keeping it static lets Vite tree-shake
// the unused transport out of the bundle.

import * as server from "./messages.js";
import * as nostr from "./nostr-transport.js";

const TRANSPORT = (import.meta.env.VITE_TRANSPORT ?? "server") as "server" | "nostr";

const impl = TRANSPORT === "nostr" ? nostr : server;

export const sendMessage = impl.sendMessage;
export const pollInbox = impl.pollInbox;
export const streamInbox = impl.streamInbox;
export const decrypt = impl.decrypt;

export type { InboxMessage, StreamHandle, SealedEnvelope, MessagePlaintext } from "./messages.js";

/** Which transport this build is using — handy for a debug line in the UI. */
export const activeTransport = TRANSPORT;