import { describe, it, expect, beforeEach, vi } from 'vitest';
import { screen, fireEvent, waitFor } from '@testing-library/react';
import { Routes, Route } from 'react-router-dom';
import { renderWithProviders } from '../test/utils';

vi.mock('sonner', () => ({ toast: { success: vi.fn(), error: vi.fn() } }));
vi.mock('../lib/api', () => ({
  api: { get: vi.fn(), post: vi.fn(), patch: vi.fn(), put: vi.fn(), delete: vi.fn() },
  ApiError: class extends Error {},
}));

import { api } from '../lib/api';
import { formatRial } from '../lib/utils';
import SessionPaymentPage from './SessionPaymentPage';

const get = api.get as ReturnType<typeof vi.fn>;
const post = api.post as ReturnType<typeof vi.fn>;
const patch = api.patch as ReturnType<typeof vi.fn>;

const session = (over: object = {}) => ({
  uuid: 's1',
  services: [{ service_name: 'کاشت مو' }],
  doctor_name: 'دکتر فتحی',
  visit_price_rials: 0,
  final_price_rials: 2_500_000,
  is_paid: false,
  patient_debt_rials: 2_300_000,
  discount_rials: 200_000,
  paid_total_rials: 0,
  payments: [] as object[],
  created_at: 1_700_000_000,
  ...over,
});

function mockGets(sessions: object[]) {
  get.mockImplementation((url: string) => {
    if (url === '/api/v1/patient/r1') {
      return Promise.resolve({ success: true, data: { uuid: 'r1', user_name: 'ساغر صابری', profile: {} } });
    }
    if (url === '/api/v1/patient/r1/sessions') return Promise.resolve({ success: true, data: sessions });
    if (url === '/api/v1/patient/r1/wallet') {
      return Promise.resolve({ success: true, data: { balance_rials: 300_000, recent_transactions: [] } });
    }
    return Promise.resolve({ success: true, data: [] });
  });
}

function renderPage() {
  return renderWithProviders(
    <Routes>
      <Route path="/admin/patients/:recordUuid/session/:sessionUuid/pay" element={<SessionPaymentPage />} />
    </Routes>,
    { route: '/admin/patients/r1/session/s1/pay' },
  );
}

beforeEach(() => {
  get.mockReset();
  post.mockReset();
  patch.mockReset();
});

describe('SessionPaymentPage (تکمیل پرداخت مراجعه)', () => {
  it('renders payment step with real cost, wallet balance and remaining debt', async () => {
    mockGets([session()]);
    renderPage();

    expect(await screen.findByText('هزینه سرویس:')).toBeInTheDocument();
    expect(screen.getAllByText(formatRial(2_500_000)).length).toBeGreaterThan(0);
    // استپر دو گام حالت payment
    expect(screen.getByText('پرداخت')).toBeInTheDocument();
    expect(screen.getByText('جزییات')).toBeInTheDocument();
    // موجودی کیف پول
    expect(screen.getByText('موجودی کیف پول:')).toBeInTheDocument();
    // چهار روش پرداخت tauri
    expect(screen.getByText('پرداخت از طریق کیف پول')).toBeInTheDocument();
    expect(screen.getByText('پرداخت از طریق کارت خوان')).toBeInTheDocument();
    expect(screen.getByText('پرداخت نقدی')).toBeInTheDocument();
    expect(screen.getByText('کارت به کارت')).toBeInTheDocument();
    // breadcrumb با نام بیمار
    expect(screen.getByText('ساغر صابری')).toBeInTheDocument();
  });

  it('submits a partial payment via the accordion (POST /session/{uuid}/payments)', async () => {
    mockGets([session()]);
    post.mockResolvedValue({ success: true, data: session({ paid_total_rials: 500_000 }) });
    renderPage();

    fireEvent.click(await screen.findByText('پرداخت نقدی'));
    fireEvent.change(screen.getByPlaceholderText('مبلغ (تومان)'), { target: { value: '500000' } });
    fireEvent.click(screen.getByText('ثبت پرداخت'));

    await waitFor(() => expect(post).toHaveBeenCalledTimes(1));
    const [url, body] = post.mock.calls[0];
    expect(url).toBe('/api/v1/session/s1/payments');
    expect(body).toMatchObject({ method: 'cash', amount_rials: 500000 });
    expect(typeof (body as any).paid_at).toBe('number');
  });

  it('applies and removes settlement discount (PATCH /session/{uuid})', async () => {
    mockGets([session()]);
    patch.mockResolvedValue({ success: true, data: session() });
    renderPage();

    await screen.findByText('هزینه سرویس:');
    // حذف تخفیف → discount_type: null
    fireEvent.click(screen.getByText('حذف تخفیف'));
    await waitFor(() => expect(patch).toHaveBeenCalledWith('/api/v1/session/s1', { discount_type: null }));
  });

  it('shows registered payments and moves to details step', async () => {
    mockGets([session({
      payments: [
        { uuid: 'p1', method: 'cash', amount_rials: 1_000_000, paid_at: 1_700_000_000 },
        { uuid: 'p2', method: 'wallet', amount_rials: 300_000, paid_at: 1_700_000_000 },
      ],
      paid_total_rials: 1_300_000,
      patient_debt_rials: 1_000_000,
    })]);
    renderPage();

    // «پرداخت نقدی» هم عنوان آکاردئون است هم برچسب پرداخت ثبت‌شده
    expect((await screen.findAllByText('پرداخت نقدی')).length).toBeGreaterThanOrEqual(2);
    expect(screen.getByText('پرداخت از کیف پول')).toBeInTheDocument();

    // گام جزییات
    fireEvent.click(screen.getByText('ثبت و ادامه'));
    expect(screen.getByText('صدور فاکتور')).toBeInTheDocument();
    expect(screen.getByText('کاشت مو')).toBeInTheDocument();
    expect(screen.getByText('دکتر فتحی')).toBeInTheDocument();
    expect(screen.getByText('مبلغ باقی مانده:')).toBeInTheDocument();
  });

  it('renders empty payments state (پرداختی ثبت نشده است)', async () => {
    mockGets([session({ payments: [], discount_rials: 0 })]);
    renderPage();

    expect(await screen.findByText('پرداختی ثبت نشده است')).toBeInTheDocument();
  });

  it('shows not-found message when session uuid does not exist', async () => {
    mockGets([session({ uuid: 'other' })]);
    renderPage();

    expect(await screen.findByText('مراجعه یافت نشد')).toBeInTheDocument();
  });
});