import { mkdtempSync } from "node:fs";
import { tmpdir } from "node:os";
import { join } from "node:path";
import { vi } from "vitest";

/**
 * Carrega os módulos do servidor com um STORAGE_ROOT temporário.
 * O SessionManager lê a variável e cria o singleton no import, então o módulo
 * precisa ser reimportado a cada teste.
 */
export async function loadModules() {
    const storageRoot = mkdtempSync(join(tmpdir(), "downloader-test-"));
    process.env.STORAGE_ROOT = storageRoot;
    vi.resetModules();
    const { sessionManager } = await import("../src/lib/SessionManager.js");
    const { DownloadManager } = await import("../src/lib/DownloadManager.js");
    return { storageRoot, sessionManager, DownloadManager };
}