/**
 * Integration Test: Dashboard Use Case Orchestration
 * 
 * Tests the orchestration logic of dashboard-related Use Cases:
 * - GetDashboardUseCase: Retrieves driver statistics, upcoming races, standings, and activity
 * - Validates that Use Cases correctly interact with their Ports (Repositories, Event Publishers)
 * - Uses In-Memory adapters for fast, deterministic testing
 * 
 * Focus: Business logic orchestration, NOT UI rendering
 */

import { describe, it, expect, beforeAll, afterAll, beforeEach } from 'vitest';
import { InMemoryDriverRepository } from '../../../adapters/drivers/persistence/inmemory/InMemoryDriverRepository';
import { InMemoryRaceRepository } from '../../../adapters/races/persistence/inmemory/InMemoryRaceRepository';
import { InMemoryLeagueRepository } from '../../../adapters/leagues/persistence/inmemory/InMemoryLeagueRepository';
import { InMemoryActivityRepository } from '../../../adapters/activity/persistence/inmemory/InMemoryActivityRepository';
import { InMemoryEventPublisher } from '../../../adapters/events/InMemoryEventPublisher';
import { GetDashboardUseCase } from '../../../core/dashboard/application/use-cases/GetDashboardUseCase';
import { DashboardQuery } from '../../../core/dashboard/application/ports/DashboardQuery';

describe('Dashboard Use Case Orchestration', () => {
  let driverRepository: InMemoryDriverRepository;
  let raceRepository: InMemoryRaceRepository;
  let leagueRepository: InMemoryLeagueRepository;
  let activityRepository: InMemoryActivityRepository;
  let eventPublisher: InMemoryEventPublisher;
  let getDashboardUseCase: GetDashboardUseCase;

  beforeAll(() => {
    driverRepository = new InMemoryDriverRepository();
    raceRepository = new InMemoryRaceRepository();
    leagueRepository = new InMemoryLeagueRepository();
    activityRepository = new InMemoryActivityRepository();
    eventPublisher = new InMemoryEventPublisher();
    getDashboardUseCase = new GetDashboardUseCase({
      driverRepository,
      raceRepository,
      leagueRepository,
      activityRepository,
      eventPublisher,
    });
  });

  beforeEach(() => {
    driverRepository.clear();
    raceRepository.clear();
    leagueRepository.clear();
    activityRepository.clear();
    eventPublisher.clear();
  });

  describe('GetDashboardUseCase - Success Path', () => {
    it('should retrieve complete dashboard data for a driver with all data', async () => {
      // Scenario: Driver with complete data
      // Given: A driver exists with statistics (rating, rank, starts, wins, podiums)
      const driverId = 'driver-123';
      driverRepository.addDriver({
        id: driverId,
        name: 'John Doe',
        avatar: 'https://example.com/avatar.jpg',
        rating: 1500,
        rank: 123,
        starts: 10,
        wins: 3,
        podiums: 5,
        leagues: 2,
      });

      // And: The driver has upcoming races scheduled
      raceRepository.addUpcomingRaces(driverId, [
        {
          id: 'race-1',
          trackName: 'Monza',
          carType: 'GT3',
          scheduledDate: new Date(Date.now() + 2 * 24 * 60 * 60 * 1000), // 2 days from now
        },
        {
          id: 'race-2',
          trackName: 'Spa',
          carType: 'GT3',
          scheduledDate: new Date(Date.now() + 5 * 24 * 60 * 60 * 1000), // 5 days from now
        },
        {
          id: 'race-3',
          trackName: 'Nürburgring',
          carType: 'GT3',
          scheduledDate: new Date(Date.now() + 1 * 24 * 60 * 60 * 1000), // 1 day from now
        },
        {
          id: 'race-4',
          trackName: 'Silverstone',
          carType: 'GT3',
          scheduledDate: new Date(Date.now() + 7 * 24 * 60 * 60 * 1000), // 7 days from now
        },
        {
          id: 'race-5',
          trackName: 'Imola',
          carType: 'GT3',
          scheduledDate: new Date(Date.now() + 3 * 24 * 60 * 60 * 1000), // 3 days from now
        },
      ]);

      // And: The driver is participating in active championships
      leagueRepository.addLeagueStandings(driverId, [
        {
          leagueId: 'league-1',
          leagueName: 'GT3 Championship',
          position: 5,
          points: 150,
          totalDrivers: 20,
        },
        {
          leagueId: 'league-2',
          leagueName: 'Endurance Series',
          position: 12,
          points: 85,
          totalDrivers: 15,
        },
      ]);

      // And: The driver has recent activity (race results, events)
      activityRepository.addRecentActivity(driverId, [
        {
          id: 'activity-1',
          type: 'race_result',
          description: 'Finished 3rd at Monza',
          timestamp: new Date(Date.now() - 1 * 24 * 60 * 60 * 1000), // 1 day ago
          status: 'success',
        },
        {
          id: 'activity-2',
          type: 'league_invitation',
          description: 'Invited to League XYZ',
          timestamp: new Date(Date.now() - 2 * 24 * 60 * 60 * 1000), // 2 days ago
          status: 'info',
        },
        {
          id: 'activity-3',
          type: 'achievement',
          description: 'Reached 1500 rating',
          timestamp: new Date(Date.now() - 3 * 24 * 60 * 60 * 1000), // 3 days ago
          status: 'success',
        },
      ]);

      // When: GetDashboardUseCase.execute() is called with driver ID
      const result = await getDashboardUseCase.execute({ driverId });

      // Then: The result should contain all dashboard sections
      expect(result).toBeDefined();
      expect(result.driver.id).toBe(driverId);
      expect(result.driver.name).toBe('John Doe');
      expect(result.driver.avatar).toBe('https://example.com/avatar.jpg');

      // And: Driver statistics should be correctly calculated
      expect(result.statistics.rating).toBe(1500);
      expect(result.statistics.rank).toBe(123);
      expect(result.statistics.starts).toBe(10);
      expect(result.statistics.wins).toBe(3);
      expect(result.statistics.podiums).toBe(5);
      expect(result.statistics.leagues).toBe(2);

      // And: Upcoming races should be limited to 3
      expect(result.upcomingRaces).toHaveLength(3);

      // And: The races should be sorted by scheduled date (earliest first)
      expect(result.upcomingRaces[0].trackName).toBe('Nürburgring'); // 1 day
      expect(result.upcomingRaces[1].trackName).toBe('Monza'); // 2 days
      expect(result.upcomingRaces[2].trackName).toBe('Imola'); // 3 days

      // And: Championship standings should include league info
      expect(result.championshipStandings).toHaveLength(2);
      expect(result.championshipStandings[0].leagueName).toBe('GT3 Championship');
      expect(result.championshipStandings[0].position).toBe(5);
      expect(result.championshipStandings[0].points).toBe(150);
      expect(result.championshipStandings[0].totalDrivers).toBe(20);

      // And: Recent activity should be sorted by timestamp (newest first)
      expect(result.recentActivity).toHaveLength(3);
      expect(result.recentActivity[0].description).toBe('Finished 3rd at Monza');
      expect(result.recentActivity[0].status).toBe('success');
      expect(result.recentActivity[1].description).toBe('Invited to League XYZ');
      expect(result.recentActivity[2].description).toBe('Reached 1500 rating');

      // And: EventPublisher should emit DashboardAccessedEvent
      expect(eventPublisher.getDashboardAccessedEventCount()).toBe(1);
    });

    it('should retrieve dashboard data for a new driver with no history', async () => {
      // Scenario: New driver with minimal data
      // Given: A newly registered driver exists
      const driverId = 'new-driver-456';
      driverRepository.addDriver({
        id: driverId,
        name: 'New Driver',
        rating: 1000,
        rank: 1000,
        starts: 0,
        wins: 0,
        podiums: 0,
        leagues: 0,
      });

      // And: The driver has no race history
      // And: The driver has no upcoming races
      // And: The driver is not in any championships
      // And: The driver has no recent activity
      // When: GetDashboardUseCase.execute() is called with driver ID
      const result = await getDashboardUseCase.execute({ driverId });

      // Then: The result should contain basic driver statistics
      expect(result).toBeDefined();
      expect(result.driver.id).toBe(driverId);
      expect(result.driver.name).toBe('New Driver');
      expect(result.statistics.rating).toBe(1000);
      expect(result.statistics.rank).toBe(1000);
      expect(result.statistics.starts).toBe(0);
      expect(result.statistics.wins).toBe(0);
      expect(result.statistics.podiums).toBe(0);
      expect(result.statistics.leagues).toBe(0);

      // And: Upcoming races section should be empty
      expect(result.upcomingRaces).toHaveLength(0);

      // And: Championship standings section should be empty
      expect(result.championshipStandings).toHaveLength(0);

      // And: Recent activity section should be empty
      expect(result.recentActivity).toHaveLength(0);

      // And: EventPublisher should emit DashboardAccessedEvent
      expect(eventPublisher.getDashboardAccessedEventCount()).toBe(1);
    });

    it('should retrieve dashboard data with upcoming races limited to 3', async () => {
      // Scenario: Driver with many upcoming races
      // Given: A driver exists
      const driverId = 'driver-789';
      driverRepository.addDriver({
        id: driverId,
        name: 'Race Driver',
        rating: 1200,
        rank: 500,
        starts: 5,
        wins: 1,
        podiums: 2,
        leagues: 1,
      });

      // And: The driver has 5 upcoming races scheduled
      raceRepository.addUpcomingRaces(driverId, [
        {
          id: 'race-1',
          trackName: 'Track A',
          carType: 'GT3',
          scheduledDate: new Date(Date.now() + 10 * 24 * 60 * 60 * 1000), // 10 days
        },
        {
          id: 'race-2',
          trackName: 'Track B',
          carType: 'GT3',
          scheduledDate: new Date(Date.now() + 2 * 24 * 60 * 60 * 1000), // 2 days
        },
        {
          id: 'race-3',
          trackName: 'Track C',
          carType: 'GT3',
          scheduledDate: new Date(Date.now() + 5 * 24 * 60 * 60 * 1000), // 5 days
        },
        {
          id: 'race-4',
          trackName: 'Track D',
          carType: 'GT3',
          scheduledDate: new Date(Date.now() + 1 * 24 * 60 * 60 * 1000), // 1 day
        },
        {
          id: 'race-5',
          trackName: 'Track E',
          carType: 'GT3',
          scheduledDate: new Date(Date.now() + 7 * 24 * 60 * 60 * 1000), // 7 days
        },
      ]);

      // When: GetDashboardUseCase.execute() is called with driver ID
      const result = await getDashboardUseCase.execute({ driverId });

      // Then: The result should contain only 3 upcoming races
      expect(result.upcomingRaces).toHaveLength(3);

      // And: The races should be sorted by scheduled date (earliest first)
      expect(result.upcomingRaces[0].trackName).toBe('Track D'); // 1 day
      expect(result.upcomingRaces[1].trackName).toBe('Track B'); // 2 days
      expect(result.upcomingRaces[2].trackName).toBe('Track C'); // 5 days

      // And: EventPublisher should emit DashboardAccessedEvent
      expect(eventPublisher.getDashboardAccessedEventCount()).toBe(1);
    });

    it('should retrieve dashboard data with championship standings for multiple leagues', async () => {
      // Scenario: Driver in multiple championships
      // Given: A driver exists
      const driverId = 'driver-champ';
      driverRepository.addDriver({
        id: driverId,
        name: 'Champion Driver',
        rating: 1800,
        rank: 50,
        starts: 20,
        wins: 8,
        podiums: 15,
        leagues: 3,
      });

      // And: The driver is participating in 3 active championships
      leagueRepository.addLeagueStandings(driverId, [
        {
          leagueId: 'league-1',
          leagueName: 'Championship A',
          position: 3,
          points: 200,
          totalDrivers: 25,
        },
        {
          leagueId: 'league-2',
          leagueName: 'Championship B',
          position: 8,
          points: 120,
          totalDrivers: 18,
        },
        {
          leagueId: 'league-3',
          leagueName: 'Championship C',
          position: 15,
          points: 60,
          totalDrivers: 30,
        },
      ]);

      // When: GetDashboardUseCase.execute() is called with driver ID
      const result = await getDashboardUseCase.execute({ driverId });

      // Then: The result should contain standings for all 3 leagues
      expect(result.championshipStandings).toHaveLength(3);

      // And: Each league should show position, points, and total drivers
      expect(result.championshipStandings[0].leagueName).toBe('Championship A');
      expect(result.championshipStandings[0].position).toBe(3);
      expect(result.championshipStandings[0].points).toBe(200);
      expect(result.championshipStandings[0].totalDrivers).toBe(25);

      expect(result.championshipStandings[1].leagueName).toBe('Championship B');
      expect(result.championshipStandings[1].position).toBe(8);
      expect(result.championshipStandings[1].points).toBe(120);
      expect(result.championshipStandings[1].totalDrivers).toBe(18);

      expect(result.championshipStandings[2].leagueName).toBe('Championship C');
      expect(result.championshipStandings[2].position).toBe(15);
      expect(result.championshipStandings[2].points).toBe(60);
      expect(result.championshipStandings[2].totalDrivers).toBe(30);

      // And: EventPublisher should emit DashboardAccessedEvent
      expect(eventPublisher.getDashboardAccessedEventCount()).toBe(1);
    });

    it('should retrieve dashboard data with recent activity sorted by timestamp', async () => {
      // Scenario: Driver with multiple recent activities
      // Given: A driver exists
      const driverId = 'driver-activity';
      driverRepository.addDriver({
        id: driverId,
        name: 'Active Driver',
        rating: 1400,
        rank: 200,
        starts: 15,
        wins: 4,
        podiums: 8,
        leagues: 1,
      });

      // And: The driver has 5 recent activities (race results, events)
      activityRepository.addRecentActivity(driverId, [
        {
          id: 'activity-1',
          type: 'race_result',
          description: 'Race 1',
          timestamp: new Date(Date.now() - 5 * 24 * 60 * 60 * 1000), // 5 days ago
          status: 'success',
        },
        {
          id: 'activity-2',
          type: 'race_result',
          description: 'Race 2',
          timestamp: new Date(Date.now() - 1 * 24 * 60 * 60 * 1000), // 1 day ago
          status: 'success',
        },
        {
          id: 'activity-3',
          type: 'achievement',
          description: 'Achievement 1',
          timestamp: new Date(Date.now() - 3 * 24 * 60 * 60 * 1000), // 3 days ago
          status: 'success',
        },
        {
          id: 'activity-4',
          type: 'league_invitation',
          description: 'Invitation',
          timestamp: new Date(Date.now() - 2 * 24 * 60 * 60 * 1000), // 2 days ago
          status: 'info',
        },
        {
          id: 'activity-5',
          type: 'other',
          description: 'Other event',
          timestamp: new Date(Date.now() - 4 * 24 * 60 * 60 * 1000), // 4 days ago
          status: 'info',
        },
      ]);

      // When: GetDashboardUseCase.execute() is called with driver ID
      const result = await getDashboardUseCase.execute({ driverId });

      // Then: The result should contain all activities
      expect(result.recentActivity).toHaveLength(5);

      // And: Activities should be sorted by timestamp (newest first)
      expect(result.recentActivity[0].description).toBe('Race 2'); // 1 day ago
      expect(result.recentActivity[1].description).toBe('Invitation'); // 2 days ago
      expect(result.recentActivity[2].description).toBe('Achievement 1'); // 3 days ago
      expect(result.recentActivity[3].description).toBe('Other event'); // 4 days ago
      expect(result.recentActivity[4].description).toBe('Race 1'); // 5 days ago

      // And: EventPublisher should emit DashboardAccessedEvent
      expect(eventPublisher.getDashboardAccessedEventCount()).toBe(1);
    });
  });

  describe('GetDashboardUseCase - Edge Cases', () => {
    it('should handle driver with no upcoming races but has completed races', async () => {
      // Scenario: Driver with completed races but no upcoming races
      // Given: A driver exists
      const driverId = 'driver-no-upcoming';
      driverRepository.addDriver({
        id: driverId,
        name: 'Past Driver',
        rating: 1300,
        rank: 300,
        starts: 8,
        wins: 2,
        podiums: 4,
        leagues: 1,
      });

      // And: The driver has completed races in the past
      // And: The driver has no upcoming races scheduled
      // When: GetDashboardUseCase.execute() is called with driver ID
      const result = await getDashboardUseCase.execute({ driverId });

      // Then: The result should contain driver statistics from completed races
      expect(result.statistics.starts).toBe(8);
      expect(result.statistics.wins).toBe(2);
      expect(result.statistics.podiums).toBe(4);

      // And: Upcoming races section should be empty
      expect(result.upcomingRaces).toHaveLength(0);

      // And: EventPublisher should emit DashboardAccessedEvent
      expect(eventPublisher.getDashboardAccessedEventCount()).toBe(1);
    });

    it('should handle driver with upcoming races but no completed races', async () => {
      // Scenario: Driver with upcoming races but no completed races
      // Given: A driver exists
      const driverId = 'driver-no-completed';
      driverRepository.addDriver({
        id: driverId,
        name: 'New Racer',
        rating: 1100,
        rank: 800,
        starts: 0,
        wins: 0,
        podiums: 0,
        leagues: 0,
      });

      // And: The driver has upcoming races scheduled
      raceRepository.addUpcomingRaces(driverId, [
        {
          id: 'race-1',
          trackName: 'Track A',
          carType: 'GT3',
          scheduledDate: new Date(Date.now() + 2 * 24 * 60 * 60 * 1000),
        },
      ]);

      // And: The driver has no completed races
      // When: GetDashboardUseCase.execute() is called with driver ID
      const result = await getDashboardUseCase.execute({ driverId });

      // Then: The result should contain upcoming races
      expect(result.upcomingRaces).toHaveLength(1);
      expect(result.upcomingRaces[0].trackName).toBe('Track A');

      // And: Driver statistics should show zeros for wins, podiums, etc.
      expect(result.statistics.starts).toBe(0);
      expect(result.statistics.wins).toBe(0);
      expect(result.statistics.podiums).toBe(0);

      // And: EventPublisher should emit DashboardAccessedEvent
      expect(eventPublisher.getDashboardAccessedEventCount()).toBe(1);
    });

    it('should handle driver with championship standings but no recent activity', async () => {
      // Scenario: Driver in championships but no recent activity
      // Given: A driver exists
      const driverId = 'driver-champ-only';
      driverRepository.addDriver({
        id: driverId,
        name: 'Champ Only',
        rating: 1600,
        rank: 100,
        starts: 12,
        wins: 5,
        podiums: 8,
        leagues: 2,
      });

      // And: The driver is participating in active championships
      leagueRepository.addLeagueStandings(driverId, [
        {
          leagueId: 'league-1',
          leagueName: 'Championship A',
          position: 10,
          points: 100,
          totalDrivers: 20,
        },
      ]);

      // And: The driver has no recent activity
      // When: GetDashboardUseCase.execute() is called with driver ID
      const result = await getDashboardUseCase.execute({ driverId });

      // Then: The result should contain championship standings
      expect(result.championshipStandings).toHaveLength(1);
      expect(result.championshipStandings[0].leagueName).toBe('Championship A');

      // And: Recent activity section should be empty
      expect(result.recentActivity).toHaveLength(0);

      // And: EventPublisher should emit DashboardAccessedEvent
      expect(eventPublisher.getDashboardAccessedEventCount()).toBe(1);
    });

    it('should handle driver with recent activity but no championship standings', async () => {
      // Scenario: Driver with recent activity but not in championships
      // Given: A driver exists
      const driverId = 'driver-activity-only';
      driverRepository.addDriver({
        id: driverId,
        name: 'Activity Only',
        rating: 1250,
        rank: 400,
        starts: 6,
        wins: 1,
        podiums: 2,
        leagues: 0,
      });

      // And: The driver has recent activity
      activityRepository.addRecentActivity(driverId, [
        {
          id: 'activity-1',
          type: 'race_result',
          description: 'Finished 5th',
          timestamp: new Date(Date.now() - 1 * 24 * 60 * 60 * 1000),
          status: 'success',
        },
      ]);

      // And: The driver is not participating in any championships
      // When: GetDashboardUseCase.execute() is called with driver ID
      const result = await getDashboardUseCase.execute({ driverId });

      // Then: The result should contain recent activity
      expect(result.recentActivity).toHaveLength(1);
      expect(result.recentActivity[0].description).toBe('Finished 5th');

      // And: Championship standings section should be empty
      expect(result.championshipStandings).toHaveLength(0);

      // And: EventPublisher should emit DashboardAccessedEvent
      expect(eventPublisher.getDashboardAccessedEventCount()).toBe(1);
    });

    it('should handle driver with no data at all', async () => {
      // TODO: Implement test
      // Scenario: Driver with absolutely no data
      // Given: A driver exists
      // And: The driver has no statistics
      // And: The driver has no upcoming races
      // And: The driver has no championship standings
      // And: The driver has no recent activity
      // When: GetDashboardUseCase.execute() is called with driver ID
      // Then: The result should contain basic driver info
      // And: All sections should be empty or show default values
      // And: EventPublisher should emit DashboardAccessedEvent
    });
  });

  describe('GetDashboardUseCase - Error Handling', () => {
    it('should throw error when driver does not exist', async () => {
      // TODO: Implement test
      // Scenario: Non-existent driver
      // Given: No driver exists with the given ID
      // When: GetDashboardUseCase.execute() is called with non-existent driver ID
      // Then: Should throw DriverNotFoundError
      // And: EventPublisher should NOT emit any events
    });

    it('should throw error when driver ID is invalid', async () => {
      // TODO: Implement test
      // Scenario: Invalid driver ID
      // Given: An invalid driver ID (e.g., empty string, null, undefined)
      // When: GetDashboardUseCase.execute() is called with invalid driver ID
      // Then: Should throw ValidationError
      // And: EventPublisher should NOT emit any events
    });

    it('should handle repository errors gracefully', async () => {
      // TODO: Implement test
      // Scenario: Repository throws error
      // Given: A driver exists
      // And: DriverRepository throws an error during query
      // When: GetDashboardUseCase.execute() is called
      // Then: Should propagate the error appropriately
      // And: EventPublisher should NOT emit any events
    });
  });

  describe('Dashboard Data Orchestration', () => {
    it('should correctly calculate driver statistics from race results', async () => {
      // TODO: Implement test
      // Scenario: Driver statistics calculation
      // Given: A driver exists
      // And: The driver has 10 completed races
      // And: The driver has 3 wins
      // And: The driver has 5 podiums
      // When: GetDashboardUseCase.execute() is called
      // Then: Driver statistics should show:
      // - Starts: 10
      // - Wins: 3
      // - Podiums: 5
      // - Rating: Calculated based on performance
      // - Rank: Calculated based on rating
    });

    it('should correctly format upcoming race time information', async () => {
      // TODO: Implement test
      // Scenario: Upcoming race time formatting
      // Given: A driver exists
      // And: The driver has an upcoming race scheduled in 2 days 4 hours
      // When: GetDashboardUseCase.execute() is called
      // Then: The upcoming race should include:
      // - Track name
      // - Car type
      // - Scheduled date and time
      // - Time until race (formatted as "2 days 4 hours")
    });

    it('should correctly aggregate championship standings across leagues', async () => {
      // TODO: Implement test
      // Scenario: Championship standings aggregation
      // Given: A driver exists
      // And: The driver is in 2 championships
      // And: In Championship A: Position 5, 150 points, 20 drivers
      // And: In Championship B: Position 12, 85 points, 15 drivers
      // When: GetDashboardUseCase.execute() is called
      // Then: Championship standings should show:
      // - League A: Position 5, 150 points, 20 drivers
      // - League B: Position 12, 85 points, 15 drivers
    });

    it('should correctly format recent activity with proper status', async () => {
      // TODO: Implement test
      // Scenario: Recent activity formatting
      // Given: A driver exists
      // And: The driver has a race result (finished 3rd)
      // And: The driver has a league invitation event
      // When: GetDashboardUseCase.execute() is called
      // Then: Recent activity should show:
      // - Race result: Type "race_result", Status "success", Description "Finished 3rd at Monza"
      // - League invitation: Type "league_invitation", Status "info", Description "Invited to League XYZ"
    });
  });
});
