import { mkdtemp, rm } from "node:fs/promises";
import os from "node:os";
import path from "node:path";
import { afterEach, beforeEach, vi } from "vitest";

/**
 * Points the registry and credential store at a fresh temp directory for each test and
 * resets the module cache, so modules that read env at import time pick it up.
 */
export function withTempDataDir() {
  const dir = { path: "" };

  beforeEach(async () => {
    dir.path = await mkdtemp(path.join(os.tmpdir(), "cameras-test-"));
    vi.stubEnv("CAMERA_REGISTRY_FILE", path.join(dir.path, "cameras.json"));
    vi.stubEnv("CAMERA_CREDENTIALS_FILE", path.join(dir.path, "credentials.json"));
    vi.stubEnv("CAMERA_CREDENTIALS_KEY", "test-key");
    vi.stubEnv("ONVIF_USERNAME", "");
    vi.stubEnv("ONVIF_PASSWORD", "");
    vi.resetModules();
  });

  afterEach(async () => {
    await rm(dir.path, { recursive: true, force: true });
  });

  return dir;
}