import { describe, it, expect } from 'vitest';
import { LeaguesViewDataBuilder } from '../../../apps/website/lib/builders/view-data/LeaguesViewDataBuilder';
import type { AllLeaguesWithCapacityAndScoringDTO } from '../../../apps/website/lib/types/generated/AllLeaguesWithCapacityAndScoringDTO';
import type { LeagueWithCapacityAndScoringDTO } from '../../../apps/website/lib/types/generated/LeagueWithCapacityAndScoringDTO';

describe('LeaguesViewDataBuilder', () => {
  const mockLeagues: LeagueWithCapacityAndScoringDTO[] = [
    {
      id: 'league-1',
      name: 'Test League 1',
      description: 'A test league description',
      ownerId: 'owner-1',
      createdAt: '2024-01-01T00:00:00Z',
      settings: {
        maxDrivers: 32,
        qualifyingFormat: 'Solo',
      },
      usedSlots: 15,
      category: 'Road',
      socialLinks: {
        discordUrl: 'https://discord.gg/test1',
        youtubeUrl: 'https://youtube.com/test1',
        websiteUrl: 'https://test1.com',
      },
      scoring: {
        gameId: 'game-1',
        gameName: 'Test Game 1',
        primaryChampionshipType: 'Solo',
        scoringPresetId: 'preset-1',
        scoringPresetName: 'Standard',
        dropPolicySummary: 'Drop 2 worst races',
        scoringPatternSummary: 'Points based on finish position',
      },
      timingSummary: 'Every Sunday at 8 PM',
      logoUrl: 'https://logo.com/test1.png',
      pendingJoinRequestsCount: 3,
      pendingProtestsCount: 1,
      walletBalance: 1000,
    },
    {
      id: 'league-2',
      name: 'Test League 2',
      description: 'Another test league',
      ownerId: 'owner-2',
      createdAt: '2024-01-02T00:00:00Z',
      settings: {
        maxDrivers: 16,
        qualifyingFormat: 'Team',
      },
      usedSlots: 8,
      category: 'Oval',
      socialLinks: {
        discordUrl: 'https://discord.gg/test2',
      },
      scoring: {
        gameId: 'game-2',
        gameName: 'Test Game 2',
        primaryChampionshipType: 'Team',
        scoringPresetId: 'preset-2',
        scoringPresetName: 'Advanced',
        dropPolicySummary: 'Drop 1 worst race',
        scoringPatternSummary: 'Points based on finish position with bonuses',
      },
      timingSummary: 'Every Saturday at 7 PM',
      logoUrl: 'https://logo.com/test2.png',
    },
    {
      id: 'league-3',
      name: 'Test League 3',
      description: 'A third test league',
      ownerId: 'owner-3',
      createdAt: '2024-01-03T00:00:00Z',
      settings: {
        maxDrivers: 24,
        qualifyingFormat: 'Solo',
      },
      usedSlots: 24,
      category: 'Road',
      scoring: {
        gameId: 'game-3',
        gameName: 'Test Game 3',
        primaryChampionshipType: 'Solo',
        scoringPresetId: 'preset-3',
        scoringPresetName: 'Custom',
        dropPolicySummary: 'No drops',
        scoringPatternSummary: 'Fixed points per position',
      },
      timingSummary: 'Every Friday at 9 PM',
    },
  ];

  describe('build()', () => {
    it('should transform all leagues correctly', () => {
      const apiDto: AllLeaguesWithCapacityAndScoringDTO = {
        leagues: mockLeagues,
        totalCount: 3,
      };

      const result = LeaguesViewDataBuilder.build(apiDto);

      expect(result.leagues).toHaveLength(3);

      // Check first league
      expect(result.leagues[0].id).toBe('league-1');
      expect(result.leagues[0].name).toBe('Test League 1');
      expect(result.leagues[0].description).toBe('A test league description');
      expect(result.leagues[0].logoUrl).toBe('https://logo.com/test1.png');
      expect(result.leagues[0].ownerId).toBe('owner-1');
      expect(result.leagues[0].createdAt).toBe('2024-01-01T00:00:00Z');
      expect(result.leagues[0].maxDrivers).toBe(32);
      expect(result.leagues[0].usedDriverSlots).toBe(15);
      expect(result.leagues[0].structureSummary).toBe('Solo');
      expect(result.leagues[0].timingSummary).toBe('Every Sunday at 8 PM');
      expect(result.leagues[0].category).toBe('Road');

      // Check scoring
      expect(result.leagues[0].scoring).toBeDefined();
      expect(result.leagues[0].scoring?.gameId).toBe('game-1');
      expect(result.leagues[0].scoring?.gameName).toBe('Test Game 1');
      expect(result.leagues[0].scoring?.primaryChampionshipType).toBe('Solo');
      expect(result.leagues[0].scoring?.scoringPresetId).toBe('preset-1');
      expect(result.leagues[0].scoring?.scoringPresetName).toBe('Standard');
      expect(result.leagues[0].scoring?.dropPolicySummary).toBe('Drop 2 worst races');
      expect(result.leagues[0].scoring?.scoringPatternSummary).toBe('Points based on finish position');
    });

    it('should handle leagues with missing description', () => {
      const leaguesWithoutDescription: LeagueWithCapacityAndScoringDTO[] = [
        {
          id: 'league-1',
          name: 'Test League',
          description: '',
          ownerId: 'owner-1',
          createdAt: '2024-01-01T00:00:00Z',
          settings: {
            maxDrivers: 32,
            qualifyingFormat: 'Solo',
          },
          usedSlots: 15,
          category: 'Road',
          scoring: {
            gameId: 'game-1',
            gameName: 'Test Game',
            primaryChampionshipType: 'Solo',
            scoringPresetId: 'preset-1',
            scoringPresetName: 'Standard',
            dropPolicySummary: 'Drop 2 worst races',
            scoringPatternSummary: 'Points based on finish position',
          },
          timingSummary: 'Every Sunday at 8 PM',
        },
      ];

      const apiDto: AllLeaguesWithCapacityAndScoringDTO = {
        leagues: leaguesWithoutDescription,
        totalCount: 1,
      };

      const result = LeaguesViewDataBuilder.build(apiDto);

      expect(result.leagues[0].description).toBe(null);
    });

    it('should handle leagues with missing logoUrl', () => {
      const leaguesWithoutLogo: LeagueWithCapacityAndScoringDTO[] = [
        {
          id: 'league-1',
          name: 'Test League',
          description: 'A test league',
          ownerId: 'owner-1',
          createdAt: '2024-01-01T00:00:00Z',
          settings: {
            maxDrivers: 32,
            qualifyingFormat: 'Solo',
          },
          usedSlots: 15,
          category: 'Road',
          scoring: {
            gameId: 'game-1',
            gameName: 'Test Game',
            primaryChampionshipType: 'Solo',
            scoringPresetId: 'preset-1',
            scoringPresetName: 'Standard',
            dropPolicySummary: 'Drop 2 worst races',
            scoringPatternSummary: 'Points based on finish position',
          },
          timingSummary: 'Every Sunday at 8 PM',
        },
      ];

      const apiDto: AllLeaguesWithCapacityAndScoringDTO = {
        leagues: leaguesWithoutLogo,
        totalCount: 1,
      };

      const result = LeaguesViewDataBuilder.build(apiDto);

      expect(result.leagues[0].logoUrl).toBe(null);
    });

    it('should handle leagues with missing category', () => {
      const leaguesWithoutCategory: LeagueWithCapacityAndScoringDTO[] = [
        {
          id: 'league-1',
          name: 'Test League',
          description: 'A test league',
          ownerId: 'owner-1',
          createdAt: '2024-01-01T00:00:00Z',
          settings: {
            maxDrivers: 32,
            qualifyingFormat: 'Solo',
          },
          usedSlots: 15,
          scoring: {
            gameId: 'game-1',
            gameName: 'Test Game',
            primaryChampionshipType: 'Solo',
            scoringPresetId: 'preset-1',
            scoringPresetName: 'Standard',
            dropPolicySummary: 'Drop 2 worst races',
            scoringPatternSummary: 'Points based on finish position',
          },
          timingSummary: 'Every Sunday at 8 PM',
        },
      ];

      const apiDto: AllLeaguesWithCapacityAndScoringDTO = {
        leagues: leaguesWithoutCategory,
        totalCount: 1,
      };

      const result = LeaguesViewDataBuilder.build(apiDto);

      expect(result.leagues[0].category).toBe(null);
    });

    it('should handle leagues with missing scoring', () => {
      const leaguesWithoutScoring: LeagueWithCapacityAndScoringDTO[] = [
        {
          id: 'league-1',
          name: 'Test League',
          description: 'A test league',
          ownerId: 'owner-1',
          createdAt: '2024-01-01T00:00:00Z',
          settings: {
            maxDrivers: 32,
            qualifyingFormat: 'Solo',
          },
          usedSlots: 15,
          category: 'Road',
          timingSummary: 'Every Sunday at 8 PM',
        },
      ];

      const apiDto: AllLeaguesWithCapacityAndScoringDTO = {
        leagues: leaguesWithoutScoring,
        totalCount: 1,
      };

      const result = LeaguesViewDataBuilder.build(apiDto);

      expect(result.leagues[0].scoring).toBeUndefined();
    });

    it('should handle leagues with missing social links', () => {
      const leaguesWithoutSocialLinks: LeagueWithCapacityAndScoringDTO[] = [
        {
          id: 'league-1',
          name: 'Test League',
          description: 'A test league',
          ownerId: 'owner-1',
          createdAt: '2024-01-01T00:00:00Z',
          settings: {
            maxDrivers: 32,
            qualifyingFormat: 'Solo',
          },
          usedSlots: 15,
          category: 'Road',
          scoring: {
            gameId: 'game-1',
            gameName: 'Test Game',
            primaryChampionshipType: 'Solo',
            scoringPresetId: 'preset-1',
            scoringPresetName: 'Standard',
            dropPolicySummary: 'Drop 2 worst races',
            scoringPatternSummary: 'Points based on finish position',
          },
          timingSummary: 'Every Sunday at 8 PM',
        },
      ];

      const apiDto: AllLeaguesWithCapacityAndScoringDTO = {
        leagues: leaguesWithoutSocialLinks,
        totalCount: 1,
      };

      const result = LeaguesViewDataBuilder.build(apiDto);

      expect(result.leagues[0]).toBeDefined();
    });

    it('should handle leagues with missing timingSummary', () => {
      const leaguesWithoutTimingSummary: LeagueWithCapacityAndScoringDTO[] = [
        {
          id: 'league-1',
          name: 'Test League',
          description: 'A test league',
          ownerId: 'owner-1',
          createdAt: '2024-01-01T00:00:00Z',
          settings: {
            maxDrivers: 32,
            qualifyingFormat: 'Solo',
          },
          usedSlots: 15,
          category: 'Road',
          scoring: {
            gameId: 'game-1',
            gameName: 'Test Game',
            primaryChampionshipType: 'Solo',
            scoringPresetId: 'preset-1',
            scoringPresetName: 'Standard',
            dropPolicySummary: 'Drop 2 worst races',
            scoringPatternSummary: 'Points based on finish position',
          },
        },
      ];

      const apiDto: AllLeaguesWithCapacityAndScoringDTO = {
        leagues: leaguesWithoutTimingSummary,
        totalCount: 1,
      };

      const result = LeaguesViewDataBuilder.build(apiDto);

      expect(result.leagues[0].timingSummary).toBe('');
    });

    it('should handle empty leagues array', () => {
      const apiDto: AllLeaguesWithCapacityAndScoringDTO = {
        leagues: [],
        totalCount: 0,
      };

      const result = LeaguesViewDataBuilder.build(apiDto);

      expect(result.leagues).toHaveLength(0);
    });

    it('should handle leagues with different categories', () => {
      const apiDto: AllLeaguesWithCapacityAndScoringDTO = {
        leagues: mockLeagues,
        totalCount: 3,
      };

      const result = LeaguesViewDataBuilder.build(apiDto);

      expect(result.leagues[0].category).toBe('Road');
      expect(result.leagues[1].category).toBe('Oval');
      expect(result.leagues[2].category).toBe('Road');
    });

    it('should handle leagues with different structures', () => {
      const apiDto: AllLeaguesWithCapacityAndScoringDTO = {
        leagues: mockLeagues,
        totalCount: 3,
      };

      const result = LeaguesViewDataBuilder.build(apiDto);

      expect(result.leagues[0].structureSummary).toBe('Solo');
      expect(result.leagues[1].structureSummary).toBe('Team');
      expect(result.leagues[2].structureSummary).toBe('Solo');
    });

    it('should handle leagues with different scoring presets', () => {
      const apiDto: AllLeaguesWithCapacityAndScoringDTO = {
        leagues: mockLeagues,
        totalCount: 3,
      };

      const result = LeaguesViewDataBuilder.build(apiDto);

      expect(result.leagues[0].scoring?.scoringPresetName).toBe('Standard');
      expect(result.leagues[1].scoring?.scoringPresetName).toBe('Advanced');
      expect(result.leagues[2].scoring?.scoringPresetName).toBe('Custom');
    });

    it('should handle leagues with different drop policies', () => {
      const apiDto: AllLeaguesWithCapacityAndScoringDTO = {
        leagues: mockLeagues,
        totalCount: 3,
      };

      const result = LeaguesViewDataBuilder.build(apiDto);

      expect(result.leagues[0].scoring?.dropPolicySummary).toBe('Drop 2 worst races');
      expect(result.leagues[1].scoring?.dropPolicySummary).toBe('Drop 1 worst race');
      expect(result.leagues[2].scoring?.dropPolicySummary).toBe('No drops');
    });

    it('should handle leagues with different scoring patterns', () => {
      const apiDto: AllLeaguesWithCapacityAndScoringDTO = {
        leagues: mockLeagues,
        totalCount: 3,
      };

      const result = LeaguesViewDataBuilder.build(apiDto);

      expect(result.leagues[0].scoring?.scoringPatternSummary).toBe('Points based on finish position');
      expect(result.leagues[1].scoring?.scoringPatternSummary).toBe('Points based on finish position with bonuses');
      expect(result.leagues[2].scoring?.scoringPatternSummary).toBe('Fixed points per position');
    });

    it('should handle leagues with different primary championship types', () => {
      const apiDto: AllLeaguesWithCapacityAndScoringDTO = {
        leagues: mockLeagues,
        totalCount: 3,
      };

      const result = LeaguesViewDataBuilder.build(apiDto);

      expect(result.leagues[0].scoring?.primaryChampionshipType).toBe('Solo');
      expect(result.leagues[1].scoring?.primaryChampionshipType).toBe('Team');
      expect(result.leagues[2].scoring?.primaryChampionshipType).toBe('Solo');
    });

    it('should handle leagues with different game names', () => {
      const apiDto: AllLeaguesWithCapacityAndScoringDTO = {
        leagues: mockLeagues,
        totalCount: 3,
      };

      const result = LeaguesViewDataBuilder.build(apiDto);

      expect(result.leagues[0].scoring?.gameName).toBe('Test Game 1');
      expect(result.leagues[1].scoring?.gameName).toBe('Test Game 2');
      expect(result.leagues[2].scoring?.gameName).toBe('Test Game 3');
    });

    it('should handle leagues with different game IDs', () => {
      const apiDto: AllLeaguesWithCapacityAndScoringDTO = {
        leagues: mockLeagues,
        totalCount: 3,
      };

      const result = LeaguesViewDataBuilder.build(apiDto);

      expect(result.leagues[0].scoring?.gameId).toBe('game-1');
      expect(result.leagues[1].scoring?.gameId).toBe('game-2');
      expect(result.leagues[2].scoring?.gameId).toBe('game-3');
    });

    it('should handle leagues with different max drivers', () => {
      const apiDto: AllLeaguesWithCapacityAndScoringDTO = {
        leagues: mockLeagues,
        totalCount: 3,
      };

      const result = LeaguesViewDataBuilder.build(apiDto);

      expect(result.leagues[0].maxDrivers).toBe(32);
      expect(result.leagues[1].maxDrivers).toBe(16);
      expect(result.leagues[2].maxDrivers).toBe(24);
    });

    it('should handle leagues with different used slots', () => {
      const apiDto: AllLeaguesWithCapacityAndScoringDTO = {
        leagues: mockLeagues,
        totalCount: 3,
      };

      const result = LeaguesViewDataBuilder.build(apiDto);

      expect(result.leagues[0].usedDriverSlots).toBe(15);
      expect(result.leagues[1].usedDriverSlots).toBe(8);
      expect(result.leagues[2].usedDriverSlots).toBe(24);
    });

    it('should handle leagues with different owners', () => {
      const apiDto: AllLeaguesWithCapacityAndScoringDTO = {
        leagues: mockLeagues,
        totalCount: 3,
      };

      const result = LeaguesViewDataBuilder.build(apiDto);

      expect(result.leagues[0].ownerId).toBe('owner-1');
      expect(result.leagues[1].ownerId).toBe('owner-2');
      expect(result.leagues[2].ownerId).toBe('owner-3');
    });

    it('should handle leagues with different creation dates', () => {
      const apiDto: AllLeaguesWithCapacityAndScoringDTO = {
        leagues: mockLeagues,
        totalCount: 3,
      };

      const result = LeaguesViewDataBuilder.build(apiDto);

      expect(result.leagues[0].createdAt).toBe('2024-01-01T00:00:00Z');
      expect(result.leagues[1].createdAt).toBe('2024-01-02T00:00:00Z');
      expect(result.leagues[2].createdAt).toBe('2024-01-03T00:00:00Z');
    });

    it('should handle leagues with different timing summaries', () => {
      const apiDto: AllLeaguesWithCapacityAndScoringDTO = {
        leagues: mockLeagues,
        totalCount: 3,
      };

      const result = LeaguesViewDataBuilder.build(apiDto);

      expect(result.leagues[0].timingSummary).toBe('Every Sunday at 8 PM');
      expect(result.leagues[1].timingSummary).toBe('Every Saturday at 7 PM');
      expect(result.leagues[2].timingSummary).toBe('Every Friday at 9 PM');
    });

    it('should handle leagues with different names', () => {
      const apiDto: AllLeaguesWithCapacityAndScoringDTO = {
        leagues: mockLeagues,
        totalCount: 3,
      };

      const result = LeaguesViewDataBuilder.build(apiDto);

      expect(result.leagues[0].name).toBe('Test League 1');
      expect(result.leagues[1].name).toBe('Test League 2');
      expect(result.leagues[2].name).toBe('Test League 3');
    });

    it('should handle leagues with different descriptions', () => {
      const apiDto: AllLeaguesWithCapacityAndScoringDTO = {
        leagues: mockLeagues,
        totalCount: 3,
      };

      const result = LeaguesViewDataBuilder.build(apiDto);

      expect(result.leagues[0].description).toBe('A test league description');
      expect(result.leagues[1].description).toBe('Another test league');
      expect(result.leagues[2].description).toBe('A third test league');
    });

    it('should handle leagues with different logo URLs', () => {
      const apiDto: AllLeaguesWithCapacityAndScoringDTO = {
        leagues: mockLeagues,
        totalCount: 3,
      };

      const result = LeaguesViewDataBuilder.build(apiDto);

      expect(result.leagues[0].logoUrl).toBe('https://logo.com/test1.png');
      expect(result.leagues[1].logoUrl).toBe('https://logo.com/test2.png');
      expect(result.leagues[2].logoUrl).toBeNull();
    });

    it('should handle leagues with activeDriversCount', () => {
      const leaguesWithActiveDrivers: LeagueWithCapacityAndScoringDTO[] = [
        {
          id: 'league-1',
          name: 'Test League',
          description: 'A test league',
          ownerId: 'owner-1',
          createdAt: '2024-01-01T00:00:00Z',
          settings: {
            maxDrivers: 32,
            qualifyingFormat: 'Solo',
          },
          usedSlots: 15,
          category: 'Road',
          scoring: {
            gameId: 'game-1',
            gameName: 'Test Game',
            primaryChampionshipType: 'Solo',
            scoringPresetId: 'preset-1',
            scoringPresetName: 'Standard',
            dropPolicySummary: 'Drop 2 worst races',
            scoringPatternSummary: 'Points based on finish position',
          },
          timingSummary: 'Every Sunday at 8 PM',
        },
      ];

      // Add activeDriversCount to the league
      (leaguesWithActiveDrivers[0] as any).activeDriversCount = 12;

      const apiDto: AllLeaguesWithCapacityAndScoringDTO = {
        leagues: leaguesWithActiveDrivers,
        totalCount: 1,
      };

      const result = LeaguesViewDataBuilder.build(apiDto);

      expect(result.leagues[0].activeDriversCount).toBe(12);
    });

    it('should handle leagues with nextRaceAt', () => {
      const leaguesWithNextRace: LeagueWithCapacityAndScoringDTO[] = [
        {
          id: 'league-1',
          name: 'Test League',
          description: 'A test league',
          ownerId: 'owner-1',
          createdAt: '2024-01-01T00:00:00Z',
          settings: {
            maxDrivers: 32,
            qualifyingFormat: 'Solo',
          },
          usedSlots: 15,
          category: 'Road',
          scoring: {
            gameId: 'game-1',
            gameName: 'Test Game',
            primaryChampionshipType: 'Solo',
            scoringPresetId: 'preset-1',
            scoringPresetName: 'Standard',
            dropPolicySummary: 'Drop 2 worst races',
            scoringPatternSummary: 'Points based on finish position',
          },
          timingSummary: 'Every Sunday at 8 PM',
        },
      ];

      // Add nextRaceAt to the league
      (leaguesWithNextRace[0] as any).nextRaceAt = '2024-02-01T18:00:00Z';

      const apiDto: AllLeaguesWithCapacityAndScoringDTO = {
        leagues: leaguesWithNextRace,
        totalCount: 1,
      };

      const result = LeaguesViewDataBuilder.build(apiDto);

      expect(result.leagues[0].nextRaceAt).toBe('2024-02-01T18:00:00Z');
    });

    it('should handle leagues without activeDriversCount and nextRaceAt', () => {
      const leaguesWithoutMetadata: LeagueWithCapacityAndScoringDTO[] = [
        {
          id: 'league-1',
          name: 'Test League',
          description: 'A test league',
          ownerId: 'owner-1',
          createdAt: '2024-01-01T00:00:00Z',
          settings: {
            maxDrivers: 32,
            qualifyingFormat: 'Solo',
          },
          usedSlots: 15,
          category: 'Road',
          scoring: {
            gameId: 'game-1',
            gameName: 'Test Game',
            primaryChampionshipType: 'Solo',
            scoringPresetId: 'preset-1',
            scoringPresetName: 'Standard',
            dropPolicySummary: 'Drop 2 worst races',
            scoringPatternSummary: 'Points based on finish position',
          },
          timingSummary: 'Every Sunday at 8 PM',
        },
      ];

      const apiDto: AllLeaguesWithCapacityAndScoringDTO = {
        leagues: leaguesWithoutMetadata,
        totalCount: 1,
      };

      const result = LeaguesViewDataBuilder.build(apiDto);

      expect(result.leagues[0].activeDriversCount).toBeUndefined();
      expect(result.leagues[0].nextRaceAt).toBeUndefined();
    });

    it('should handle leagues with different usedDriverSlots for featured leagues', () => {
      const leaguesWithDifferentSlots: LeagueWithCapacityAndScoringDTO[] = [
        {
          id: 'league-1',
          name: 'Small League',
          description: 'A small league',
          ownerId: 'owner-1',
          createdAt: '2024-01-01T00:00:00Z',
          settings: {
            maxDrivers: 16,
            qualifyingFormat: 'Solo',
          },
          usedSlots: 8,
          category: 'Road',
          scoring: {
            gameId: 'game-1',
            gameName: 'Test Game',
            primaryChampionshipType: 'Solo',
            scoringPresetId: 'preset-1',
            scoringPresetName: 'Standard',
            dropPolicySummary: 'Drop 2 worst races',
            scoringPatternSummary: 'Points based on finish position',
          },
          timingSummary: 'Every Sunday at 8 PM',
        },
        {
          id: 'league-2',
          name: 'Large League',
          description: 'A large league',
          ownerId: 'owner-2',
          createdAt: '2024-01-02T00:00:00Z',
          settings: {
            maxDrivers: 32,
            qualifyingFormat: 'Solo',
          },
          usedSlots: 25,
          category: 'Road',
          scoring: {
            gameId: 'game-2',
            gameName: 'Test Game 2',
            primaryChampionshipType: 'Solo',
            scoringPresetId: 'preset-2',
            scoringPresetName: 'Advanced',
            dropPolicySummary: 'Drop 1 worst race',
            scoringPatternSummary: 'Points based on finish position with bonuses',
          },
          timingSummary: 'Every Saturday at 7 PM',
        },
        {
          id: 'league-3',
          name: 'Medium League',
          description: 'A medium league',
          ownerId: 'owner-3',
          createdAt: '2024-01-03T00:00:00Z',
          settings: {
            maxDrivers: 24,
            qualifyingFormat: 'Team',
          },
          usedSlots: 20,
          category: 'Oval',
          scoring: {
            gameId: 'game-3',
            gameName: 'Test Game 3',
            primaryChampionshipType: 'Team',
            scoringPresetId: 'preset-3',
            scoringPresetName: 'Custom',
            dropPolicySummary: 'No drops',
            scoringPatternSummary: 'Fixed points per position',
          },
          timingSummary: 'Every Friday at 9 PM',
        },
      ];

      const apiDto: AllLeaguesWithCapacityAndScoringDTO = {
        leagues: leaguesWithDifferentSlots,
        totalCount: 3,
      };

      const result = LeaguesViewDataBuilder.build(apiDto);

      // Verify that usedDriverSlots is correctly mapped
      expect(result.leagues[0].usedDriverSlots).toBe(8);
      expect(result.leagues[1].usedDriverSlots).toBe(25);
      expect(result.leagues[2].usedDriverSlots).toBe(20);

      // Verify that leagues can be filtered for featured leagues (usedDriverSlots > 20)
      const featuredLeagues = result.leagues.filter(l => (l.usedDriverSlots ?? 0) > 20);
      expect(featuredLeagues).toHaveLength(1);
      expect(featuredLeagues[0].id).toBe('league-2');
    });

    it('should handle leagues with different categories for filtering', () => {
      const leaguesWithDifferentCategories: LeagueWithCapacityAndScoringDTO[] = [
        {
          id: 'league-1',
          name: 'Road League 1',
          description: 'A road league',
          ownerId: 'owner-1',
          createdAt: '2024-01-01T00:00:00Z',
          settings: {
            maxDrivers: 32,
            qualifyingFormat: 'Solo',
          },
          usedSlots: 15,
          category: 'Road',
          scoring: {
            gameId: 'game-1',
            gameName: 'Test Game',
            primaryChampionshipType: 'Solo',
            scoringPresetId: 'preset-1',
            scoringPresetName: 'Standard',
            dropPolicySummary: 'Drop 2 worst races',
            scoringPatternSummary: 'Points based on finish position',
          },
          timingSummary: 'Every Sunday at 8 PM',
        },
        {
          id: 'league-2',
          name: 'Oval League 1',
          description: 'An oval league',
          ownerId: 'owner-2',
          createdAt: '2024-01-02T00:00:00Z',
          settings: {
            maxDrivers: 16,
            qualifyingFormat: 'Solo',
          },
          usedSlots: 8,
          category: 'Oval',
          scoring: {
            gameId: 'game-2',
            gameName: 'Test Game 2',
            primaryChampionshipType: 'Solo',
            scoringPresetId: 'preset-2',
            scoringPresetName: 'Advanced',
            dropPolicySummary: 'Drop 1 worst race',
            scoringPatternSummary: 'Points based on finish position with bonuses',
          },
          timingSummary: 'Every Saturday at 7 PM',
        },
        {
          id: 'league-3',
          name: 'Road League 2',
          description: 'Another road league',
          ownerId: 'owner-3',
          createdAt: '2024-01-03T00:00:00Z',
          settings: {
            maxDrivers: 24,
            qualifyingFormat: 'Team',
          },
          usedSlots: 20,
          category: 'Road',
          scoring: {
            gameId: 'game-3',
            gameName: 'Test Game 3',
            primaryChampionshipType: 'Team',
            scoringPresetId: 'preset-3',
            scoringPresetName: 'Custom',
            dropPolicySummary: 'No drops',
            scoringPatternSummary: 'Fixed points per position',
          },
          timingSummary: 'Every Friday at 9 PM',
        },
      ];

      const apiDto: AllLeaguesWithCapacityAndScoringDTO = {
        leagues: leaguesWithDifferentCategories,
        totalCount: 3,
      };

      const result = LeaguesViewDataBuilder.build(apiDto);

      // Verify that category is correctly mapped
      expect(result.leagues[0].category).toBe('Road');
      expect(result.leagues[1].category).toBe('Oval');
      expect(result.leagues[2].category).toBe('Road');

      // Verify that leagues can be filtered by category
      const roadLeagues = result.leagues.filter(l => l.category === 'Road');
      expect(roadLeagues).toHaveLength(2);
      expect(roadLeagues[0].id).toBe('league-1');
      expect(roadLeagues[1].id).toBe('league-3');

      const ovalLeagues = result.leagues.filter(l => l.category === 'Oval');
      expect(ovalLeagues).toHaveLength(1);
      expect(ovalLeagues[0].id).toBe('league-2');
    });

    it('should handle leagues with null category for filtering', () => {
      const leaguesWithNullCategory: LeagueWithCapacityAndScoringDTO[] = [
        {
          id: 'league-1',
          name: 'League with Category',
          description: 'A league with category',
          ownerId: 'owner-1',
          createdAt: '2024-01-01T00:00:00Z',
          settings: {
            maxDrivers: 32,
            qualifyingFormat: 'Solo',
          },
          usedSlots: 15,
          category: 'Road',
          scoring: {
            gameId: 'game-1',
            gameName: 'Test Game',
            primaryChampionshipType: 'Solo',
            scoringPresetId: 'preset-1',
            scoringPresetName: 'Standard',
            dropPolicySummary: 'Drop 2 worst races',
            scoringPatternSummary: 'Points based on finish position',
          },
          timingSummary: 'Every Sunday at 8 PM',
        },
        {
          id: 'league-2',
          name: 'League without Category',
          description: 'A league without category',
          ownerId: 'owner-2',
          createdAt: '2024-01-02T00:00:00Z',
          settings: {
            maxDrivers: 16,
            qualifyingFormat: 'Solo',
          },
          usedSlots: 8,
          scoring: {
            gameId: 'game-2',
            gameName: 'Test Game 2',
            primaryChampionshipType: 'Solo',
            scoringPresetId: 'preset-2',
            scoringPresetName: 'Advanced',
            dropPolicySummary: 'Drop 1 worst race',
            scoringPatternSummary: 'Points based on finish position with bonuses',
          },
          timingSummary: 'Every Saturday at 7 PM',
        },
      ];

      const apiDto: AllLeaguesWithCapacityAndScoringDTO = {
        leagues: leaguesWithNullCategory,
        totalCount: 2,
      };

      const result = LeaguesViewDataBuilder.build(apiDto);

      // Verify that null category is handled correctly
      expect(result.leagues[0].category).toBe('Road');
      expect(result.leagues[1].category).toBe(null);

      // Verify that leagues can be filtered by category (null category should be filterable)
      const roadLeagues = result.leagues.filter(l => l.category === 'Road');
      expect(roadLeagues).toHaveLength(1);
      expect(roadLeagues[0].id).toBe('league-1');

      const noCategoryLeagues = result.leagues.filter(l => l.category === null);
      expect(noCategoryLeagues).toHaveLength(1);
      expect(noCategoryLeagues[0].id).toBe('league-2');
    });
  });
});