import React from 'react';
import { beforeEach, describe, expect, it, vi } from 'vitest';
import { render, screen } from '@testing-library/react';
import { MemoryRouter } from 'react-router-dom';
import AppRoutes from './AppRoutes';

const mockUseAuth = vi.fn();

vi.mock('./contexts/AuthContext', () => ({
  useAuth: () => mockUseAuth(),
}));

vi.mock('./contexts/UserContext', () => ({
  useUser: () => ({ isInitialized: true }),
}));

vi.mock('./debugConfig', () => ({
  logger: { debug: vi.fn(), info: vi.fn(), warn: vi.fn(), error: vi.fn() },
}));

vi.mock('./pages/Layout', () => ({
  default: ({ children }: { children: React.ReactNode }) => <div>{children}</div>,
}));
vi.mock('./pages/auth/PlatformAdminPage', () => ({ default: () => <div>Platform Admin Page</div> }));
vi.mock('./pages/auth/adminPage', () => ({ default: () => <div>Legacy Admin</div> }));
vi.mock('./pages/auth/loginPage', () => ({ default: () => <div>Login Page</div> }));
vi.mock('./pages/auth/signupPage', () => ({ default: () => <div>Signup Page</div> }));
vi.mock('./pages/user/dashboardPage', () => ({ default: () => <div>Dashboard Page</div> }));
vi.mock('./pages/user/NotFound', () => ({ default: () => <div>Private Not Found</div> }));
vi.mock('./pages/NotFoundPublic', () => ({ default: () => <div>Public Not Found</div> }));
vi.mock('./pages/tldraw/TLDrawCanvas', () => ({ default: () => <div>Public Home</div> }));
vi.mock('./pages/tldraw/singlePlayerPage', () => ({ default: () => <div>Single Player</div> }));
vi.mock('./pages/tldraw/multiplayerUser', () => ({ default: () => <div>Multiplayer</div> }));
vi.mock('./pages/exam', () => ({ ExamDashboardPage: () => <div>Exam Marker</div> }));
vi.mock('./pages/user/calendarPage', () => ({ default: () => <div>Calendar</div> }));
vi.mock('./pages/user/settingsPage', () => ({ default: () => <div>Settings</div> }));
vi.mock('./pages/tldraw/devPlayerPage', () => ({ default: () => <div>TLDraw Dev</div> }));
vi.mock('./pages/tldraw/devPage', () => ({ default: () => <div>Dev</div> }));
vi.mock('./pages/react-flow/teacherPlanner', () => ({ default: () => <div>Teacher Planner</div> }));
vi.mock('./pages/morphicPage', () => ({ default: () => <div>Morphic</div> }));
vi.mock('./pages/tldraw/ShareHandler', () => ({ default: () => <div>Share</div> }));
vi.mock('./pages/searxngPage', () => ({ default: () => <div>Search</div> }));
vi.mock('./pages/dev/SimpleUploadTest', () => ({ default: () => <div>Upload Test</div> }));
vi.mock('./pages/tldraw/CCDocumentIntelligence/CCDocumentIntelligence', () => ({
  CCDocumentIntelligence: () => <div>Doc Intelligence</div>,
}));
vi.mock('./pages/timetable', () => ({
  TimetablePage: () => <div>Timetable</div>,
  TimetableListPage: () => <div>Timetable List</div>,
  ClassesPage: () => <div>Classes</div>,
  LessonPage: () => <div>Lesson</div>,
  TaughtLessonsPage: () => <div>Taught Lessons</div>,
  MyClassesPage: () => <div>My Classes</div>,
  EnrollmentRequestsPage: () => <div>Enrollment Requests</div>,
  StaffManagerPage: () => <div>Staff Manager</div>,
  StudentManagerPage: () => <div>Student Manager</div>,
  SchoolSettingsPage: () => <div>School Settings</div>,
  ClassDetailPage: () => <div>Class Detail</div>,
  StudentLessonsPage: () => <div>Student Lessons</div>,
  LessonPlansPage: () => <div>Lesson Plans</div>,
  LessonPlanDetailPage: () => <div>Lesson Plan Detail</div>,
}));

function renderAt(path: string) {
  return render(
    <MemoryRouter initialEntries={[path]}>
      <AppRoutes />
    </MemoryRouter>
  );
}

function authState(overrides: Record<string, unknown>) {
  return {
    user: null,
    user_role: null,
    accessToken: null,
    loading: false,
    error: null,
    signIn: vi.fn(),
    signOut: vi.fn(),
    clearError: vi.fn(),
    ...overrides,
  };
}

describe('/admin route authorization', () => {
  beforeEach(() => {
    mockUseAuth.mockReset();
  });

  it('redirects anonymous users away from /admin', () => {
    mockUseAuth.mockReturnValue(authState({ user: null, user_role: null }));

    renderAt('/admin');

    expect(screen.queryByText('Platform Admin Page')).not.toBeInTheDocument();
    expect(screen.getByText('Login Page')).toBeInTheDocument();
  });

  it('redirects authenticated non-admin users away from /admin', () => {
    mockUseAuth.mockReturnValue(authState({
      user: { id: 'user-1', email: 'teacher@example.com', user_type: 'email_teacher' },
      user_role: 'email_teacher',
      accessToken: 'token',
    }));

    renderAt('/admin');

    expect(screen.queryByText('Platform Admin Page')).not.toBeInTheDocument();
    expect(screen.getByText('Dashboard Page')).toBeInTheDocument();
  });

  it('allows super_admin users to access /admin', () => {
    mockUseAuth.mockReturnValue(authState({
      user: { id: 'admin-1', email: 'admin@example.com', user_type: 'super_admin' },
      user_role: 'super_admin',
      accessToken: 'token',
    }));

    renderAt('/admin');

    expect(screen.getByText('Platform Admin Page')).toBeInTheDocument();
  });
});