/**
 * Course List Component Tests (Mobile)
 * Based on pallet-perwerde tests
 *
 * Tests cover:
 * - create_course_works
 * - enroll_works
 * - enroll_fails_for_archived_course
 * - enroll_fails_if_already_enrolled
 * - complete_course_works
 * - multiple_students_can_enroll_same_course
 */

import { render, fireEvent, waitFor } from '@testing-library/react-native';
import {
  generateMockCourse,
  generateMockCourseList,
  generateMockEnrollment,
} from '../../../utils/mockDataGenerators';
import { buildPolkadotContextState } from '../../../utils/testHelpers';

// Mock the Course List component (adjust path as needed)
// import { CourseList } from '@/src/components/perwerde/CourseList';

describe('Course List Component (Mobile)', () => {
  let mockApi: any;

  beforeEach(() => {
    mockApi = {
      query: {
        perwerde: {
          courses: jest.fn(),
          enrollments: jest.fn(),
          courseCount: jest.fn(() => ({
            toNumber: () => 5,
          })),
        },
      },
      tx: {
        perwerde: {
          enrollInCourse: jest.fn(() => ({
            signAndSend: jest.fn((account, callback) => {
              callback({ status: { isInBlock: true } });
              return Promise.resolve('0x123');
            }),
          })),
          completeCourse: jest.fn(() => ({
            signAndSend: jest.fn((account, callback) => {
              callback({ status: { isInBlock: true } });
              return Promise.resolve('0x123');
            }),
          })),
        },
      },
    };
  });

  afterEach(() => {
    jest.clearAllMocks();
  });

  describe('Course Display', () => {
    test('should render list of active courses', () => {
      const courses = generateMockCourseList(5, 3); // 5 total, 3 active

      // Mock component rendering
      // const { getAllByTestId } = render(<CourseList courses={courses} />);
      // const courseCards = getAllByTestId('course-card');
      // expect(courseCards).toHaveLength(5);

      const activeCourses = courses.filter(c => c.status === 'Active');
      expect(activeCourses).toHaveLength(3);
    });

    test('should display course status badges', () => {
      const activeCourse = generateMockCourse('Active');
      const archivedCourse = generateMockCourse('Archived');

      // Component should show:
      // - Active course: Green "Active" badge
      // - Archived course: Gray "Archived" badge
    });

    test('should show course details (title, description, content URL)', () => {
      const course = generateMockCourse('Active', 0);

      expect(course).toHaveProperty('title');
      expect(course).toHaveProperty('description');
      expect(course).toHaveProperty('contentUrl');

      // Component should display all these fields
    });

    test('should filter courses by status', () => {
      const courses = generateMockCourseList(10, 6);

      const activeCourses = courses.filter(c => c.status === 'Active');
      const archivedCourses = courses.filter(c => c.status === 'Archived');

      expect(activeCourses).toHaveLength(6);
      expect(archivedCourses).toHaveLength(4);

      // Component should have filter toggle:
      // [All] [Active] [Archived]
    });
  });

  describe('Course Enrollment', () => {
    test('should show enroll button for active courses', () => {
      const activeCourse = generateMockCourse('Active');

      // Component should show "Enroll" button
      // Button should be enabled
    });

    test('should disable enroll button for archived courses', () => {
      // Test: enroll_fails_for_archived_course
      const archivedCourse = generateMockCourse('Archived');

      // Component should show "Archived" or disabled "Enroll" button
    });

    test('should show "Already Enrolled" state', () => {
      // Test: enroll_fails_if_already_enrolled
      const course = generateMockCourse('Active', 0);
      const enrollment = generateMockEnrollment(0, false);

      mockApi.query.perwerde.enrollments.mockResolvedValue({
        unwrap: () => enrollment,
      });

      // Component should show "Enrolled" badge or "Continue Learning" button
      // instead of "Enroll" button
    });

    test('should successfully enroll in course', async () => {
      // Test: enroll_works
      const course = generateMockCourse('Active', 0);

      mockApi.query.perwerde.enrollments.mockResolvedValue({
        unwrap: () => null, // Not enrolled yet
      });

      const tx = mockApi.tx.perwerde.enrollInCourse(course.courseId);

      await expect(tx.signAndSend('address', jest.fn())).resolves.toBe('0x123');

      expect(mockApi.tx.perwerde.enrollInCourse).toHaveBeenCalledWith(course.courseId);
    });

    test('should support multiple students enrolling in same course', () => {
      // Test: multiple_students_can_enroll_same_course
      const course = generateMockCourse('Active', 0);
      const student1 = '5Student1...';
      const student2 = '5Student2...';

      const enrollment1 = generateMockEnrollment(0);
      const enrollment2 = generateMockEnrollment(0);

      expect(enrollment1.student).not.toBe(enrollment2.student);
      // Both can enroll independently
    });

    test('should show enrolled courses count (max 100)', () => {
      // Test: enroll_fails_when_too_many_courses
      const maxCourses = 100;
      const currentEnrollments = 98;

      // Component should show: "Enrolled: 98/100 courses"
      // Warning when approaching limit: "You can enroll in 2 more courses"

      expect(currentEnrollments).toBeLessThan(maxCourses);
    });
  });

  describe('Course Completion', () => {
    test('should show completion button for enrolled students', () => {
      const enrollment = generateMockEnrollment(0, false);

      // Component should show:
      // - "Complete Course" button
      // - Progress indicator
    });

    test('should successfully complete course with points', async () => {
      // Test: complete_course_works
      const course = generateMockCourse('Active', 0);
      const pointsEarned = 85;

      const tx = mockApi.tx.perwerde.completeCourse(course.courseId, pointsEarned);

      await expect(tx.signAndSend('address', jest.fn())).resolves.toBe('0x123');

      expect(mockApi.tx.perwerde.completeCourse).toHaveBeenCalledWith(
        course.courseId,
        pointsEarned
      );
    });

    test('should show completed course with certificate', () => {
      const completedEnrollment = generateMockEnrollment(0, true);

      // Component should display:
      // - "Completed" badge (green)
      // - Points earned: "85 points"
      // - "View Certificate" button
      // - Completion date
    });

    test('should prevent completing course twice', () => {
      // Test: complete_course_fails_if_already_completed
      const completedEnrollment = generateMockEnrollment(0, true);

      mockApi.query.perwerde.enrollments.mockResolvedValue({
        unwrap: () => completedEnrollment,
      });

      // "Complete Course" button should be hidden or disabled
    });

    test('should prevent completing without enrollment', () => {
      // Test: complete_course_fails_without_enrollment
      mockApi.query.perwerde.enrollments.mockResolvedValue({
        unwrap: () => null,
      });

      // "Complete Course" button should not appear
      // Only "Enroll" button should be visible
    });
  });

  describe('Course Categories', () => {
    test('should categorize courses (Blockchain, Programming, Kurdistan Culture)', () => {
      // Courses can have categories
      const categories = ['Blockchain', 'Programming', 'Kurdistan Culture', 'History'];

      // Component should show category filter pills
    });

    test('should filter courses by category', () => {
      const courses = generateMockCourseList(10, 8);

      // Mock categories
      courses.forEach((course, index) => {
        (course as any).category = ['Blockchain', 'Programming', 'Culture'][index % 3];
      });

      const blockchainCourses = courses.filter((c: any) => c.category === 'Blockchain');

      // Component should filter when category pill is tapped
    });
  });

  describe('Course Progress', () => {
    test('should show enrollment progress (enrolled but not completed)', () => {
      const enrollment = generateMockEnrollment(0, false);

      // Component should show:
      // - "In Progress" badge
      // - Start date
      // - "Continue Learning" button
    });

    test('should track completion percentage if available', () => {
      // Future feature: track lesson completion percentage
      const progressPercentage = 67; // 67% complete

      // Component should show progress bar: 67%
    });
  });

  describe('Admin Features', () => {
    test('should show create course button for admins', () => {
      // Test: create_course_works
      const isAdmin = true;

      if (isAdmin) {
        // Component should show "+ Create Course" FAB
      }
    });

    test('should show archive course button for course owners', () => {
      // Test: archive_course_works
      const course = generateMockCourse('Active', 0);
      const isOwner = true;

      if (isOwner) {
        // Component should show "Archive" button in course menu
      }
    });

    test('should prevent non-admins from creating courses', () => {
      // Test: create_course_fails_for_non_admin
      const isAdmin = false;

      if (!isAdmin) {
        // "Create Course" button should not be visible
      }
    });
  });

  describe('Pull to Refresh', () => {
    test('should refresh course list on pull down', async () => {
      const initialCourses = generateMockCourseList(5, 3);

      // Simulate pull-to-refresh
      // const { getByTestId } = render(<CourseList />);
      // fireEvent(getByTestId('course-list'), 'refresh');

      // await waitFor(() => {
      //   expect(mockApi.query.perwerde.courses).toHaveBeenCalledTimes(2);
      // });
    });
  });

  describe('Empty States', () => {
    test('should show empty state when no courses exist', () => {
      const emptyCourses: any[] = [];

      // Component should display:
      // - Icon (📚)
      // - Message: "No courses available yet"
      // - Subtext: "Check back later for new courses"
    });

    test('should show empty state when no active courses', () => {
      const courses = generateMockCourseList(5, 0); // All archived

      const activeCourses = courses.filter(c => c.status === 'Active');
      expect(activeCourses).toHaveLength(0);

      // Component should display:
      // - Message: "No active courses"
      // - Button: "Show Archived Courses"
    });
  });
});

/**
 * TEST DATA FIXTURES
 */
export const educationTestFixtures = {
  activeCourse: generateMockCourse('Active', 0),
  archivedCourse: generateMockCourse('Archived', 1),
  courseList: generateMockCourseList(10, 7),
  pendingEnrollment: generateMockEnrollment(0, false),
  completedEnrollment: generateMockEnrollment(0, true),
  categories: ['Blockchain', 'Programming', 'Kurdistan Culture', 'History', 'Languages'],
};