import { describe, it, expect, beforeEach, afterEach, vi } from 'vitest';
import { getScenarioRuntime, RudderClient } from '../../src/client/RudderClient.js';
import { createFakeTokenStore } from '../helpers/FakeTokenStore.js';
import { createFakeGateway, type FakeGateway } from '../helpers/fakeGateway.js';
import { stubDeterministicUuid } from '../helpers/memoryPlanStore.js';
import { effect } from '../helpers/plan.js';
import type { StoreOfferEffect, WaitEffect } from '../../src/index.js';

const MINUTE = 60_000;

describe('E2E: pending effects resume after a new login', () => {
  let gateway: FakeGateway;

  function makeClient(): RudderClient {
    return new RudderClient({
      baseUrl: 'https://api.test.rudder.build',
      projectKey: 'test-project',
      tokenStore: createFakeTokenStore(),
      runtime: { loginEvent: null },
    });
  }

  beforeEach(() => {
    stubDeterministicUuid();
    vi.useFakeTimers();
    gateway = createFakeGateway({
      stores: [{ slug: 'starter', name: 'Starter', offers: [{ id: 'pack_1', slug: 'pack-1', name: 'Pack' }] }],
    });
    const now = Date.now();
    const wait = effect('wait', {}, {
      scenarioSlug: 'offer_flow',
      runId: 'offer_flow-run',
      nodeId: 'wait_intro',
      waitDeadline: new Date(now + MINUTE).toISOString(),
    });
    const offer = effect('store', { message: 'Limited starter pack!', storeSlug: 'starter' }, {
      scenarioSlug: 'offer_flow',
      runId: 'offer_flow-run',
      nodeId: 'offer',
    });
    gateway.onEvent('session_start', wait);
    gateway.onCallback('wait_intro', 'onComplete', offer);
    gateway.install();
  });

  afterEach(() => {
    vi.useRealTimers();
    vi.unstubAllGlobals();
  });

  it('a wait started before reload resumes from GET pending after login', async () => {
    const client1 = makeClient();
    await client1.auth.loginWithDevice();
    const runtime1 = await getScenarioRuntime(client1);
    await runtime1.send('session_start');
    expect(runtime1.isRunning).toBe(true);

    const client2 = makeClient();
    const resumedWaits: WaitEffect[] = [];
    let offer: StoreOfferEffect | undefined;
    client2.effects.onWait((s) => { resumedWaits.push(s); });
    client2.effects.onStoreOffer((s) => { offer = s; });

    await client2.auth.loginWithDevice();

    expect(resumedWaits).toHaveLength(1);
    expect(offer).toBeUndefined();

    await vi.advanceTimersByTimeAsync(MINUTE);
    await vi.waitFor(() => expect(offer).toBeDefined());
    expect(offer!.message).toBe('Limited starter pack!');
  });
});