import { readFileSync } from "node:fs";
import { join } from "node:path";
import { json, mockFetch } from "./fetchMock.ts";

// хаб в памяти для тестов обновления из Jira: снимок, список пакетов, пакет по id; счётчики запросов
export const fixture = (name: string) => readFileSync(join(import.meta.dirname, "..", "modules", "jira", "board", "__fixtures__", name), "utf8");
export const SNAP = JSON.parse(fixture("hub-basic.board.json"));
export const sleep = (ms: number) => new Promise((r) => setTimeout(r, ms));
export const deferred = <T,>() => { let resolve!: (v: T) => void; const promise = new Promise<T>((r) => { resolve = r; }); return { promise, resolve }; };

export function hub(over: Partial<Record<string, (url: URL, body: unknown) => Response | Promise<Response>>> = {}) {
  const calls: string[] = [];
  const inFlight: Record<string, number> = {}, maxInFlight: Record<string, number> = {};
  const fetch = mockFetch(async (method, url, body) => {
    const k = `${method} ${url.pathname}`;
    calls.push(k);
    inFlight[k] = (inFlight[k] ?? 0) + 1;
    maxInFlight[k] = Math.max(maxInFlight[k] ?? 0, inFlight[k]);
    try {
      const h = over[k] ?? over[`${method} ${url.pathname.replace(/\d+$/, ":id")}`];
      if (h) return await h(url, body);
      if (k === "GET /board") return json(200, SNAP);
      if (k === "GET /issues") return json(200, { issues: [] });
      if (k === "GET /projects") return json(200, { projects: [] });
      if (k === "GET /batches") return json(200, { batches: [] });
      if (k === "GET /agent") return json(200, { online: true, last_seen_at: null, warning: null });
      if (k === "POST /refresh") return json(201, { id: 7, estimate_seconds: 5, count: 1 });
      return json(404, { error: "not_found" });
    } finally { inFlight[k] -= 1; }
  });
  return { fetch, calls, count: (k: string) => calls.filter((c) => c === k).length, maxInFlight: (k: string) => maxInFlight[k] ?? 0 };
}

export const batch = (status: string, cmd: Record<string, unknown> = { status: "done" }) =>
  json(200, { id: 7, title: "Обновление", author: "viewer", created_at: "", cancelled_at: null, status, counts: {}, remaining_seconds: 0, commands: [{ id: 1, seq: 1, type: "refresh", error: null, finished_at: null, ...cmd }] });