// A module that keeps state through the SDK (novox/hq ADR 0201): it watches its servers as it is
// imported, and writes each change it is handed to STATE_LOG; one tool registers a server.
import { appendFileSync } from "node:fs";
import { state } from "@novox/mesh-sdk/state";
import { registerModuleTools } from "@novox/mesh-sdk/tools";

const servers = state("servers");
await servers.watch((c) => appendFileSync(process.env.STATE_LOG, `${c.current ? "was" : "now"} ${c.op} ${c.key}\n`));
await servers.watch((c) => appendFileSync(process.env.STATE_LOG, `narrow ${c.op} ${c.key}\n`), { key: "anchor.*" });
appendFileSync(process.env.STATE_LOG, "current\n");
registerModuleTools("sdkkeeper", () => [
  { name: "register", description: "put a server", input: {}, run: async (a) => servers.put(a.key, { url: a.url }) },
]);