/**
 * Leaderboards Feature Flow Tests
 * 
 * These tests verify routing, guards, navigation, cross-screen state, and user flows
 * for the leaderboards module. They run with real frontend and mocked contracts.
 * 
 * Contracts are defined in apps/website/lib/types/generated
 * 
 * @file apps/website/tests/flows/leaderboards.test.ts
 */

describe('Leaderboards Feature Flow', () => {
  describe('Leaderboards Navigation', () => {
    it('should redirect to login when accessing leaderboards without authentication', () => {
      // TODO: Implement test
      // - Navigate to /leaderboards
      // - Verify redirect to /auth/login
      // - Check return URL parameter
    });

    it('should allow access to leaderboards with valid authentication', () => {
      // TODO: Implement test
      // - Mock AuthSessionDTO
      // - Navigate to /leaderboards
      // - Verify leaderboards page loads successfully
      // - Check for expected leaderboards elements
    });

    it('should navigate from leaderboards to drivers leaderboard', () => {
      // TODO: Implement test
      // - Login and navigate to /leaderboards
      // - Click "Drivers" tab or link
      // - Verify navigation to /leaderboards/drivers
    });

    it('should navigate from leaderboards to teams leaderboard', () => {
      // TODO: Implement test
      // - Login and navigate to /leaderboards
      // - Click "Teams" tab or link
      // - Verify navigation to /leaderboards/teams
    });

    it('should handle direct navigation to drivers leaderboard', () => {
      // TODO: Implement test
      // - Login and attempt direct navigation to /leaderboards/drivers
      // - Verify drivers leaderboard renders correctly
      // - Check URL remains /leaderboards/drivers
    });

    it('should handle direct navigation to teams leaderboard', () => {
      // TODO: Implement test
      // - Login and attempt direct navigation to /leaderboards/teams
      // - Verify teams leaderboard renders correctly
      // - Check URL remains /leaderboards/teams
    });

    it('should navigate from driver leaderboard to driver profile', () => {
      // TODO: Implement test
      // - Navigate to /leaderboards/drivers
      // - Click on a driver row
      // - Verify navigation to driver profile page
    });

    it('should navigate from team leaderboard to team details', () => {
      // TODO: Implement test
      // - Navigate to /leaderboards/teams
      // - Click on a team row
      // - Verify navigation to team details page
    });
  });

  describe('Leaderboards Data Flow', () => {
    it('should load and display drivers leaderboard data', () => {
      // TODO: Implement test
      // - Mock DriversLeaderboardDTO response
      // - Navigate to /leaderboards/drivers
      // - Verify driver list is displayed
      // - Check for driver name, rating, rank, wins, podiums, etc.
    });

    it('should load and display teams leaderboard data', () => {
      // TODO: Implement test
      // - Mock GetTeamsLeaderboardOutputDTO response
      // - Navigate to /leaderboards/teams
      // - Verify team list is displayed
      // - Check for team name, tag, member count, rating, wins, etc.
    });

    it('should handle empty drivers leaderboard', () => {
      // TODO: Implement test
      // - Mock DriversLeaderboardDTO with empty drivers array
      // - Navigate to /leaderboards/drivers
      // - Verify empty state message is shown
    });

    it('should handle empty teams leaderboard', () => {
      // TODO: Implement test
      // - Mock GetTeamsLeaderboardOutputDTO with empty teams array
      // - Navigate to /leaderboards/teams
      // - Verify empty state message is shown
    });

    it('should display leaderboard metadata', () => {
      // TODO: Implement test
      // - Mock DriversLeaderboardDTO with totalRaces, totalWins, activeCount
      // - Navigate to /leaderboards/drivers
      // - Verify metadata is displayed (total races, total wins, active drivers)
    });

    it('should handle leaderboard data loading errors', () => {
      // TODO: Implement test
      // - Mock leaderboard API to return error
      // - Navigate to /leaderboards
      // - Verify error handling (likely redirects to notFound)
      // - Check error logging
    });

    it('should handle leaderboard access denied (403/401)', () => {
      // TODO: Implement test
      // - Mock API to return 403/401 error
      // - Navigate to /leaderboards
      // - Verify redirect to login or error page
    });

    it('should refresh leaderboard data on page refresh', () => {
      // TODO: Implement test
      // - Login and navigate to /leaderboards/drivers
      // - Trigger browser refresh or router.refresh()
      // - Verify leaderboard query is called again
      // - Verify data is reloaded
    });
  });

  describe('Leaderboards Filtering and Sorting', () => {
    it('should filter drivers by skill level', () => {
      // TODO: Implement test
      // - Navigate to /leaderboards/drivers
      // - Select skill level filter
      // - Verify filtered results match selected skill level
      // - Check API call includes filter parameter
    });

    it('should filter teams by performance level', () => {
      // TODO: Implement test
      // - Navigate to /leaderboards/teams
      // - Select performance level filter
      // - Verify filtered results match selected performance level
      // - Check API call includes filter parameter
    });

    it('should sort drivers by rating', () => {
      // TODO: Implement test
      // - Navigate to /leaderboards/drivers
      // - Select sort by rating
      // - Verify drivers are sorted by rating (descending)
    });

    it('should sort drivers by wins', () => {
      // TODO: Implement test
      // - Navigate to /leaderboards/drivers
      // - Select sort by wins
      // - Verify drivers are sorted by wins (descending)
    });

    it('should sort teams by rating', () => {
      // TODO: Implement test
      // - Navigate to /leaderboards/teams
      // - Select sort by rating
      // - Verify teams are sorted by rating (descending)
    });

    it('should sort teams by total wins', () => {
      // TODO: Implement test
      // - Navigate to /leaderboards/teams
      // - Select sort by total wins
      // - Verify teams are sorted by total wins (descending)
    });

    it('should handle combined filtering and sorting', () => {
      // TODO: Implement test
      // - Navigate to /leaderboards/drivers
      // - Apply skill level filter
      // - Apply rating sort
      // - Verify results are both filtered and sorted correctly
    });

    it('should clear filters and sorting', () => {
      // TODO: Implement test
      // - Navigate to /leaderboards/drivers
      // - Apply filters and sorting
      // - Click "Clear Filters" button
      // - Verify all filters are reset
      // - Verify default sorting is applied
    });

    it('should persist filters in URL', () => {
      // TODO: Implement test
      // - Navigate to /leaderboards/drivers
      // - Apply filters
      // - Verify URL contains filter parameters
      // - Refresh page
      // - Verify filters are restored from URL
    });
  });

  describe('Leaderboards Route Guard Integration', () => {
    it('should enforce authentication on leaderboards access', () => {
      // TODO: Implement test
      // - Navigate to /leaderboards without auth
      // - Verify redirect to /auth/login
      // - Check return URL includes /leaderboards
    });

    it('should handle session expiration during leaderboard viewing', () => {
      // TODO: Implement test
      // - Login and navigate to /leaderboards/drivers
      // - Mock session expiration
      // - Attempt interaction (e.g., click a driver)
      // - Verify redirect to login
    });

    it('should maintain return URL after leaderboards authentication', () => {
      // TODO: Implement test
      // - Attempt to access /leaderboards without auth
      // - Verify redirect to login with return URL
      // - Login successfully
      // - Verify redirect back to /leaderboards
    });

    it('should redirect authenticated users away from auth pages', () => {
      // TODO: Implement test
      // - Mock existing AuthSessionDTO
      // - Navigate to /auth/login
      // - Verify redirect to /leaderboards
    });
  });

  describe('Leaderboards Cross-Screen State Management', () => {
    it('should preserve leaderboard state when navigating away and back', () => {
      // TODO: Implement test
      // - Navigate to /leaderboards/drivers
      // - Apply filters and sorting
      // - Navigate to another page (e.g., /dashboard)
      // - Navigate back to /leaderboards/drivers
      // - Verify filters and sorting are preserved
    });

    it('should handle concurrent leaderboard operations', () => {
      // TODO: Implement test
      // - Navigate to /leaderboards/drivers
      // - Trigger multiple operations quickly (e.g., filter, sort, refresh)
      // - Verify loading states are managed
      // - Verify no race conditions
    });

    it('should maintain leaderboard scroll position on return', () => {
      // TODO: Implement test
      // - Navigate to /leaderboards/drivers
      // - Scroll down
      // - Navigate to /leaderboards/teams
      // - Navigate back to /leaderboards/drivers
      // - Verify scroll position is preserved
    });

    it('should preserve selected tab when navigating between leaderboards', () => {
      // TODO: Implement test
      // - Navigate to /leaderboards/drivers
      // - Navigate to /leaderboards/teams
      // - Navigate back to /leaderboards
      // - Verify "Teams" tab is still selected
    });
  });

  describe('Leaderboards UI State Management', () => {
    it('should show loading states during data operations', () => {
      // TODO: Implement test
      // - Mock delayed leaderboard API response
      // - Navigate to /leaderboards/drivers
      // - Verify loading state is shown
      // - Verify loading state is cleared after data loads
    });

    it('should handle empty states gracefully', () => {
      // TODO: Implement test
      // - Mock empty leaderboard data
      // - Navigate to /leaderboards
      // - Verify empty state messages are shown
      // - Verify UI remains functional
    });

    it('should handle error states gracefully', () => {
      // TODO: Implement test
      // - Mock various error scenarios
      // - Navigate to /leaderboards
      // - Verify error handling (redirects, error pages)
      // - Verify UI remains usable
    });

    it('should handle network connectivity issues', () => {
      // TODO: Implement test
      // - Mock network failure
      // - Navigate to /leaderboards
      // - Verify appropriate error handling
      // - Check if retry mechanism exists
    });

    it('should show active tab indicator', () => {
      // TODO: Implement test
      // - Navigate to /leaderboards/drivers
      // - Verify "Drivers" tab is highlighted
      // - Navigate to /leaderboards/teams
      // - Verify "Teams" tab is highlighted
    });
  });

  describe('Leaderboards User Interaction Flows', () => {
    it('should handle driver row click interactions', () => {
      // TODO: Implement test
      // - Navigate to /leaderboards/drivers
      // - Click on a driver row
      // - Verify navigation to driver profile page
      // - Check URL changes correctly
    });

    it('should handle team row click interactions', () => {
      // TODO: Implement test
      // - Navigate to /leaderboards/teams
      // - Click on a team row
      // - Verify navigation to team details page
      // - Check URL changes correctly
    });

    it('should handle filter dropdown interactions', () => {
      // TODO: Implement test
      // - Navigate to /leaderboards/drivers
      // - Click filter dropdown
      // - Select filter option
      // - Verify filter is applied
    });

    it('should handle sort button interactions', () => {
      // TODO: Implement test
      // - Navigate to /leaderboards/drivers
      // - Click sort button
      // - Select sort option
      // - Verify sort is applied
    });

    it('should handle pagination interactions', () => {
      // TODO: Implement test
      // - Navigate to /leaderboards/drivers
      // - Mock large dataset requiring pagination
      // - Click next page button
      // - Verify next page of results is loaded
    });

    it('should handle search functionality', () => {
      // TODO: Implement test
      // - Navigate to /leaderboards/drivers
      // - Type in search box
      // - Verify filtered results match search query
      // - Check API call includes search parameter
    });
  });

  describe('Leaderboards Performance and Edge Cases', () => {
    it('should handle large driver leaderboard datasets', () => {
      // TODO: Implement test
      // - Mock DriversLeaderboardDTO with many drivers
      // - Navigate to /leaderboards/drivers
      // - Verify UI handles large list (virtualization, performance)
      // - Check rendering performance
    });

    it('should handle large team leaderboard datasets', () => {
      // TODO: Implement test
      // - Mock GetTeamsLeaderboardOutputDTO with many teams
      // - Navigate to /leaderboards/teams
      // - Verify UI handles large list
      // - Check rendering performance
    });

    it('should handle malformed leaderboard data', () => {
      // TODO: Implement test
      // - Mock leaderboard API with malformed data
      // - Navigate to /leaderboards
      // - Verify graceful error handling
      // - Check error logging
    });

    it('should handle leaderboard data with special characters', () => {
      // TODO: Implement test
      // - Mock leaderboard data with special characters in names
      // - Navigate to /leaderboards
      // - Verify proper rendering and escaping
    });

    it('should handle leaderboard data with very long strings', () => {
      // TODO: Implement test
      // - Mock leaderboard data with very long names, descriptions, etc.
      // - Navigate to /leaderboards
      // - Verify text truncation or wrapping works correctly
    });

    it('should handle leaderboard data with missing optional fields', () => {
      // TODO: Implement test
      // - Mock DriverLeaderboardItemDTO with missing optional fields (avatarUrl, category)
      // - Navigate to /leaderboards/drivers
      // - Verify UI handles missing data gracefully
      // - Check for fallback UI elements
    });

    it('should handle leaderboard data with null values', () => {
      // TODO: Implement test
      // - Mock leaderboard data with null values
      // - Navigate to /leaderboards
      // - Verify null values are handled gracefully
    });

    it('should handle leaderboard data with extreme values', () => {
      // TODO: Implement test
      // - Mock leaderboard data with extreme values (very high/low ratings, wins, etc.)
      // - Navigate to /leaderboards
      // - Verify UI handles extreme values correctly
      // - Check for proper formatting
    });
  });
});
