// Admin domain use-case hooks: state transitions must cross-domain
// invalidate the proposals/lineItems keys (domain README rule 3). The domain
// api modules are mocked — no axios traffic.
import { describe, it, expect, vi, beforeEach } from 'vitest';
import { renderHook, waitFor } from '@testing-library/react';
import { toast } from 'react-toastify';
import { createQueryHarness } from './hookTestUtils';
import { useApproveProposal } from '../admin/use-cases';
import { proposalsKeys } from '../proposals/use-cases';
import { lineItemsKeys } from '../lineItems/use-cases';
import { adminApi } from '../admin/api';

vi.mock('../admin/api', () => ({
  adminApi: {
    getDashboard: vi.fn(),
    updateProposal: vi.fn(),
    approveProposal: vi.fn(),
    sendProposal: vi.fn(),
    reviseProposal: vi.fn(),
    returnToReview: vi.fn(),
    generateSuggestions: vi.fn(),
    getSimilar: vi.fn(),
    getHistory: vi.fn(),
    getAudit: vi.fn(),
    getPdf: vi.fn(),
  },
}));

// useSaveProposalWorkspace pulls lineItemsApi directly; mock it so no test
// path can reach axios.
vi.mock('../lineItems/api', () => ({
  lineItemsApi: {
    getAll: vi.fn(),
    create: vi.fn(),
    bulkUpdate: vi.fn(),
    delete: vi.fn(),
  },
}));

vi.mock('react-toastify', () => ({
  toast: { success: vi.fn(), error: vi.fn(), warning: vi.fn(), info: vi.fn() },
}));

const PROPOSAL_ID = 'p-7';

beforeEach(() => {
  vi.clearAllMocks();
});

describe('useApproveProposal', () => {
  it('invalidates the proposal detail and its line items keys and toasts on success', async () => {
    vi.mocked(adminApi.approveProposal).mockResolvedValue(undefined);
    const { queryClient, wrapper } = createQueryHarness();
    const invalidateSpy = vi.spyOn(queryClient, 'invalidateQueries');

    const { result } = renderHook(() => useApproveProposal(PROPOSAL_ID), { wrapper });
    result.current.mutate();

    await waitFor(() => expect(result.current.isSuccess).toBe(true));
    expect(adminApi.approveProposal).toHaveBeenCalledWith(PROPOSAL_ID);
    // Approval changes proposal status AND locks/reprices line items — both
    // domains' keys must be refetched (cross-domain invalidation, rule 3).
    expect(invalidateSpy).toHaveBeenCalledWith({
      queryKey: proposalsKeys.detail(PROPOSAL_ID),
    });
    expect(invalidateSpy).toHaveBeenCalledWith({
      queryKey: lineItemsKeys.byProposal(PROPOSAL_ID),
    });
    // ...AND every cached view of the queue: lists/stats/KPIs sit under the
    // global 5-minute staleTime, so without these the admin returns to a
    // stale queue after approving (code-review finding, Phase 4).
    expect(invalidateSpy).toHaveBeenCalledWith({
      queryKey: proposalsKeys.lists(),
    });
    expect(invalidateSpy).toHaveBeenCalledWith({
      queryKey: proposalsKeys.stats(),
    });
    expect(invalidateSpy).toHaveBeenCalledWith({
      queryKey: ['admin', 'dashboard'],
    });
    expect(toast.success).toHaveBeenCalledWith('Proposal approved');
  });

  it('toasts the failure and skips invalidation when approval is rejected', async () => {
    vi.mocked(adminApi.approveProposal).mockRejectedValue(
      new Error('proposal is not in review')
    );
    const { queryClient, wrapper } = createQueryHarness();
    const invalidateSpy = vi.spyOn(queryClient, 'invalidateQueries');

    const { result } = renderHook(() => useApproveProposal(PROPOSAL_ID), { wrapper });
    result.current.mutate();

    await waitFor(() => expect(result.current.isError).toBe(true));
    expect(toast.error).toHaveBeenCalledWith('Approval failed: proposal is not in review');
    expect(invalidateSpy).not.toHaveBeenCalled();
    expect(toast.success).not.toHaveBeenCalled();
  });
});