/**
 * The console on this machine as a client asks it for every role's tools (novox/hq ADR 0571): the method `mesh/seats`
 * beside MCP's, answered in the shape the Go console's `seatsAnswer` gives (internal/console/mcp.go). Sets
 * MESH_CONSOLE to it, so a client, and a `mesh` it spawns, asks it.
 */
import { createServer } from "node:http";
import type { AddressInfo } from "node:net";

import { SEATS_METHOD } from "../dist/client.js";

export type SeatOfConsole = { seat: string; scope: string; tools: { name: string; description?: string; input?: unknown }[] };

export async function aConsoleWithSeats(seats: SeatOfConsole[]): Promise<{ url: string; close: () => Promise<void> }> {
  const local = createServer((req, res) => {
    let body = "";
    req.on("data", (c) => (body += c));
    req.on("end", () => {
      const asked = JSON.parse(body) as { id: number; method: string };
      res.setHeader("content-type", "application/json");
      if (req.url !== "/mcp" || asked.method !== SEATS_METHOD) {
        res.end(JSON.stringify({ jsonrpc: "2.0", id: asked.id, error: { code: -32601, message: "no such method" } }));
        return;
      }
      res.end(JSON.stringify({ jsonrpc: "2.0", id: asked.id, result: { seats: seats.map((s) => ({ ...s, holders: [] })) } }));
    });
  });
  await new Promise<void>((done) => local.listen(0, "127.0.0.1", done));
  const url = `http://127.0.0.1:${(local.address() as AddressInfo).port}`;
  process.env.MESH_CONSOLE = url;
  return { url, close: () => new Promise((done) => local.close(() => done())) };
}