import { defineConfig, loadEnv } from "vite";

// Where the dev proxy forwards `/api/*` (and the events WS) to. Default to a
// local `maestro-registry` on 127.0.0.1:8080. Override by exporting either:
//   MAESTRO_REGISTRY=https://maestro-registry.example.com   (preferred)
//   MAESTRO_REGISTRY=wss://maestro-registry.example.com/daemon
// The second form (the daemon-facing URL) is normalised: ws/wss → http/https
// and any trailing `/daemon` is stripped, since the proxy needs the base URL.
function resolveProxyTarget(raw: string | undefined): string {
  if (!raw) return "http://127.0.0.1:8080";
  return raw
    .replace(/^wss:\/\//, "https://")
    .replace(/^ws:\/\//, "http://")
    .replace(/\/daemon\/?$/, "")
    .replace(/\/+$/, "");
}

export default defineConfig(({ mode }) => {
  const env = loadEnv(mode, process.cwd(), "");
  const target = resolveProxyTarget(env.MAESTRO_REGISTRY);
  const secure = target.startsWith("https://");
  // `/api/attach/:id` is a DAEMON-served broker WebSocket (NAP-243), not a
  // registry route — the registry returns 404 for it. In production the
  // `maestro-web` binary splits this traffic; in dev we replicate that here by
  // forwarding `/api/attach` straight to the local daemon. Override with
  // MAESTRO_DAEMON; defaults to the standard local daemon bind.
  const daemonTarget = env.MAESTRO_DAEMON
    ? resolveProxyTarget(env.MAESTRO_DAEMON)
    : "http://127.0.0.1:7070";
  return {
    build: {
      target: "es2022",
      outDir: "dist",
      emptyOutDir: true,
      sourcemap: false,
    },
    server: {
      port: 5173,
      // NOTE: order matters — Vite uses the first matching key, so the more
      // specific `/api/attach` must come before the catch-all `/api`.
      proxy: {
        "/api/attach": {
          target: daemonTarget,
          changeOrigin: false,
          ws: true,
          secure: false,
        },
        "/api": {
          target,
          changeOrigin: secure,
          ws: true,
          secure: false,
        },
      },
    },
  };
});