/**
 * Tests for PasswordChangeForm Component
 */

import { render, screen } from '@testing-library/react';
import userEvent from '@testing-library/user-event';
import { QueryClient, QueryClientProvider } from '@tanstack/react-query';
import { PasswordChangeForm } from '@/components/settings/PasswordChangeForm';
import * as useAuthModule from '@/lib/api/hooks/useAuth';
import { toast } from 'sonner';

jest.mock('@/lib/api/hooks/useAuth');
jest.mock('sonner', () => ({ toast: { success: jest.fn(), error: jest.fn() } }));

const mockUsePasswordChange = useAuthModule.usePasswordChange as jest.Mock;
const mockToast = toast as jest.Mocked<typeof toast>;

describe('PasswordChangeForm', () => {
  let queryClient: QueryClient;
  let user: ReturnType<typeof userEvent.setup>;
  const mockMutateAsync = jest.fn();

  beforeEach(() => {
    queryClient = new QueryClient({
      defaultOptions: { queries: { retry: false }, mutations: { retry: false } },
    });
    user = userEvent.setup();
    jest.clearAllMocks();
    mockUsePasswordChange.mockReturnValue({
      mutateAsync: mockMutateAsync,
      isPending: false,
      isError: false,
      isSuccess: false,
      error: null,
    });
  });

  const renderWithProvider = (component: React.ReactElement) =>
    render(<QueryClientProvider client={queryClient}>{component}</QueryClientProvider>);

  describe('Rendering', () => {
    it('renders all password fields', () => {
      renderWithProvider(<PasswordChangeForm />);
      expect(screen.getByLabelText(/current password/i)).toBeInTheDocument();
      expect(screen.getByLabelText(/^new password/i)).toBeInTheDocument();
      expect(screen.getByLabelText(/confirm new password/i)).toBeInTheDocument();
    });

    it('renders change password button', () => {
      renderWithProvider(<PasswordChangeForm />);
      expect(screen.getByRole('button', { name: /change password/i })).toBeInTheDocument();
    });

    it('shows password strength requirements', () => {
      renderWithProvider(<PasswordChangeForm />);
      expect(screen.getByText(/at least 8 characters/i)).toBeInTheDocument();
    });

    it('uses usePasswordChange hook', () => {
      renderWithProvider(<PasswordChangeForm />);
      expect(mockUsePasswordChange).toHaveBeenCalled();
    });
  });

  describe('Form State', () => {
    it('disables submit when pristine', () => {
      renderWithProvider(<PasswordChangeForm />);
      expect(screen.getByRole('button', { name: /change password/i })).toBeDisabled();
    });

    it('disables inputs while submitting', () => {
      mockUsePasswordChange.mockReturnValue({
        mutateAsync: mockMutateAsync,
        isPending: true,
        isError: false,
        isSuccess: false,
        error: null,
      });

      renderWithProvider(<PasswordChangeForm />);

      expect(screen.getByLabelText(/current password/i)).toBeDisabled();
      expect(screen.getByLabelText(/^new password/i)).toBeDisabled();
      expect(screen.getByLabelText(/confirm new password/i)).toBeDisabled();
    });

    it('shows loading text while submitting', () => {
      mockUsePasswordChange.mockReturnValue({
        mutateAsync: mockMutateAsync,
        isPending: true,
        isError: false,
        isSuccess: false,
        error: null,
      });

      renderWithProvider(<PasswordChangeForm />);

      expect(screen.getByText(/changing password/i)).toBeInTheDocument();
    });
  });

  describe('User Interactions', () => {
    it('allows typing in current password field', async () => {
      renderWithProvider(<PasswordChangeForm />);

      const currentPasswordInput = screen.getByLabelText(/current password/i) as HTMLInputElement;
      await user.type(currentPasswordInput, 'OldPassword123!');

      expect(currentPasswordInput.value).toBe('OldPassword123!');
    });

    it('allows typing in new password field', async () => {
      renderWithProvider(<PasswordChangeForm />);

      const newPasswordInput = screen.getByLabelText(/^new password/i) as HTMLInputElement;
      await user.type(newPasswordInput, 'NewPassword123!');

      expect(newPasswordInput.value).toBe('NewPassword123!');
    });

    it('allows typing in confirm password field', async () => {
      renderWithProvider(<PasswordChangeForm />);

      const confirmPasswordInput = screen.getByLabelText(
        /confirm new password/i
      ) as HTMLInputElement;
      await user.type(confirmPasswordInput, 'NewPassword123!');

      expect(confirmPasswordInput.value).toBe('NewPassword123!');
    });
  });

  describe('Form Submission - Success', () => {
    it('calls mutateAsync with correct data on successful submission', async () => {
      mockMutateAsync.mockResolvedValueOnce({});

      renderWithProvider(<PasswordChangeForm />);

      // Simulate the hook callback being triggered (success path)
      const hookCallback = mockUsePasswordChange.mock.calls[0][0];

      // Trigger the callback as if mutation succeeded
      hookCallback('Password changed successfully');

      expect(mockToast.success).toHaveBeenCalledWith('Password changed successfully');
    });

    it('calls onSuccess callback after successful password change', async () => {
      const onSuccess = jest.fn();
      mockMutateAsync.mockResolvedValueOnce({});

      renderWithProvider(<PasswordChangeForm onSuccess={onSuccess} />);

      // Simulate successful password change through hook callback
      const hookCallback = mockUsePasswordChange.mock.calls[0][0];
      hookCallback('Password changed successfully');

      expect(onSuccess).toHaveBeenCalled();
    });

    it('shows success toast with custom message', async () => {
      renderWithProvider(<PasswordChangeForm />);

      const hookCallback = mockUsePasswordChange.mock.calls[0][0];
      hookCallback('Your password has been updated');

      expect(mockToast.success).toHaveBeenCalledWith('Your password has been updated');
    });
  });
});