import { beforeEach, describe, expect, it, vi } from 'vitest';

const hostApiFetchMock = vi.fn();
const chatStateMock = vi.hoisted(() => ({
  state: {
    currentSessionKey: 'agent:main:main',
    currentAgentId: 'main',
    sessions: [] as Array<{ key: string; displayName?: string; label?: string; updatedAt?: number }>,
    messages: [] as Array<{ id?: string; role: string; content: unknown; timestamp?: number }>,
    sessionLabels: {} as Record<string, string>,
    sessionLastActivity: {} as Record<string, number>,
    sending: false,
    activeRunId: null as string | null,
    activeRunSessionKey: null as string | null,
    pendingFinal: false,
    lastUserMessageAt: null as number | null,
    error: null as string | null,
    loadHistory: vi.fn(),
  },
}));

vi.mock('@/lib/host-api', () => ({
  hostApiFetch: (...args: unknown[]) => hostApiFetchMock(...args),
}));

vi.mock('@/stores/chat', () => ({
  useChatStore: {
    getState: () => chatStateMock.state,
    setState: (patch: Record<string, unknown> | ((state: typeof chatStateMock.state) => Record<string, unknown>)) => {
      Object.assign(chatStateMock.state, typeof patch === 'function' ? patch(chatStateMock.state) : patch);
    },
  },
}));

function deferred<T>() {
  let resolve!: (value: T) => void;
  let reject!: (reason?: unknown) => void;
  const promise = new Promise<T>((res, rej) => {
    resolve = res;
    reject = rej;
  });
  return { promise, resolve, reject };
}

describe('cron store fetchJobs dedupe', () => {
  beforeEach(() => {
    vi.resetModules();
    vi.clearAllMocks();
    Object.assign(chatStateMock.state, {
      currentSessionKey: 'agent:main:main',
      currentAgentId: 'main',
      sessions: [],
      messages: [],
      sessionLabels: {},
      sessionLastActivity: {},
      sending: false,
      activeRunId: null,
      activeRunSessionKey: null,
      pendingFinal: false,
      lastUserMessageAt: null,
      error: null,
      loadHistory: vi.fn().mockResolvedValue(undefined),
    });
  });

  it('reuses in-flight fetchJobs request when called concurrently', async () => {
    const listDeferred = deferred<Array<{ id: string }>>();
    hostApiFetchMock.mockReturnValueOnce(listDeferred.promise);

    const { useCronStore } = await import('@/stores/cron');
    useCronStore.setState({ jobs: [], loading: false, error: null });

    const first = useCronStore.getState().fetchJobs();
    const second = useCronStore.getState().fetchJobs();
    await Promise.resolve();

    expect(hostApiFetchMock).toHaveBeenCalledTimes(1);
    expect(hostApiFetchMock).toHaveBeenCalledWith('/api/cron/jobs');

    listDeferred.resolve([{ id: 'job-1' }]);
    await Promise.all([first, second]);

    expect(useCronStore.getState().jobs.map((job) => job.id)).toEqual(['job-1']);
  });

  it('normalizes object-wrapped job lists', async () => {
    hostApiFetchMock.mockResolvedValueOnce({ jobs: [{ id: 'job-2' }] });

    const { useCronStore } = await import('@/stores/cron');
    useCronStore.setState({ jobs: [], loading: false, error: null });

    await useCronStore.getState().fetchJobs();

    expect(useCronStore.getState().jobs.map((job) => job.id)).toEqual(['job-2']);
    expect(useCronStore.getState().error).toBeNull();
  });

  it('surfaces invalid job list responses without throwing map errors', async () => {
    hostApiFetchMock.mockResolvedValueOnce({ success: false, error: 'Gateway unavailable' });

    const { useCronStore } = await import('@/stores/cron');
    useCronStore.setState({ jobs: [], loading: false, error: null });

    await useCronStore.getState().fetchJobs();

    expect(useCronStore.getState().jobs).toEqual([]);
    expect(useCronStore.getState().error).toContain('Gateway unavailable');
  });

  it('marks triggered cron sessions visible immediately', async () => {
    const nowSpy = vi.spyOn(Date, 'now').mockReturnValue(1773300000000);
    hostApiFetchMock.mockImplementation(async (path: string) => {
      if (path === '/api/cron/trigger') return { success: true };
      if (path === '/api/cron/jobs') return { jobs: [] };
      return { success: true };
    });

    const { useCronStore } = await import('@/stores/cron');
    useCronStore.setState({
      jobs: [{
        id: 'job-1',
        name: '每日经营日报',
        message: '生成日报',
        schedule: '0 9 * * *',
        enabled: true,
        createdAt: '2026-05-13T00:00:00.000Z',
        updatedAt: '2026-05-13T00:00:00.000Z',
        agentId: 'main',
      }],
      loading: false,
      error: null,
    });

    await useCronStore.getState().triggerJob('job-1');

    expect(chatStateMock.state.sessions).toContainEqual(expect.objectContaining({
      key: 'agent:main:cron:job-1',
      label: '每日经营日报',
      updatedAt: 1773300000000,
    }));
    expect(chatStateMock.state.sessionLabels['agent:main:cron:job-1']).toBe('每日经营日报');
    expect(chatStateMock.state.sessionLastActivity['agent:main:cron:job-1']).toBe(1773300000000);
    nowSpy.mockRestore();
  });

  it('shows the current cron query immediately and refreshes the fixed task conversation after trigger completion', async () => {
    const nowSpy = vi.spyOn(Date, 'now').mockReturnValue(1773300000000);
    const triggerDeferred = deferred<{ success: boolean }>();
    hostApiFetchMock.mockImplementation(async (path: string) => {
      if (path === '/api/cron/trigger') return triggerDeferred.promise;
      if (path === '/api/cron/jobs') return { jobs: [] };
      return { success: true };
    });
    chatStateMock.state.currentSessionKey = 'agent:main:cron:job-1';

    const { useCronStore } = await import('@/stores/cron');
    useCronStore.setState({
      jobs: [{
        id: 'job-1',
        name: '每日经营日报',
        message: '生成日报',
        schedule: '0 9 * * *',
        enabled: true,
        createdAt: '2026-05-13T00:00:00.000Z',
        updatedAt: '2026-05-13T00:00:00.000Z',
        agentId: 'main',
      }],
      loading: false,
      error: null,
    });

    const triggerPromise = useCronStore.getState().triggerJob('job-1');
    await Promise.resolve();

    expect(chatStateMock.state.sending).toBe(true);
    expect(chatStateMock.state.activeRunSessionKey).toBe('agent:main:cron:job-1');
    expect(chatStateMock.state.pendingFinal).toBe(true);
    expect(chatStateMock.state.lastUserMessageAt).toBe(1773300000000);
    expect(chatStateMock.state.messages).toContainEqual(expect.objectContaining({
      role: 'user',
      content: '生成日报',
      timestamp: 1773300000000,
    }));
    expect(chatStateMock.state.messages).toContainEqual(expect.objectContaining({
      role: 'assistant',
      content: '任务已开始执行，完成后会自动在这里显示结果。',
    }));

    triggerDeferred.resolve({ success: true });
    await triggerPromise;

    expect(chatStateMock.state.loadHistory).toHaveBeenCalledWith(false);
    expect(chatStateMock.state.sending).toBe(false);
    expect(chatStateMock.state.activeRunSessionKey).toBeNull();
    expect(chatStateMock.state.pendingFinal).toBe(false);
    expect(chatStateMock.state.lastUserMessageAt).toBeNull();
    nowSpy.mockRestore();
  });
});