import { describe, expect, it } from 'vitest';
import { LeaderboardDriverItem } from '../view-data/LeaderboardDriverItem';
import { LeaderboardsViewData } from '../view-data/LeaderboardsViewData';
import { DriverLeaderboardItemViewModel } from './DriverLeaderboardItemViewModel';
import { DriverLeaderboardViewModel } from './DriverLeaderboardViewModel';

const createDriverViewData = (overrides: Partial<LeaderboardDriverItem> = {}): LeaderboardDriverItem => ({
  id: 'driver-1',
  name: 'Driver One',
  rating: 1500,
  skillLevel: 'advanced',
  nationality: 'DE',
  racesCompleted: 10,
  wins: 3,
  podiums: 5,
  rank: 1,
  avatarUrl: 'https://example.com/avatar-1.jpg',
  position: 1,
  ...overrides,
});

describe('DriverLeaderboardViewModel', () => {
  it('wraps ViewData drivers into DriverLeaderboardItemViewModel instances', () => {
    const viewData: LeaderboardsViewData = {
      drivers: [
        createDriverViewData({ id: 'driver-1', position: 1 }),
        createDriverViewData({ id: 'driver-2', name: 'Driver Two', position: 2 })
      ],
      teams: []
    };
    const viewModel = new DriverLeaderboardViewModel(viewData);

    expect(viewModel.drivers).toHaveLength(2);
    expect(viewModel.drivers[0]).toBeInstanceOf(DriverLeaderboardItemViewModel);
    expect(viewModel.drivers[0].position).toBe(1);
    expect(viewModel.drivers[1].position).toBe(2);
  });

  it('computes aggregate totals', () => {
    const viewData: LeaderboardsViewData = {
      drivers: [
        createDriverViewData({ id: 'driver-1', racesCompleted: 10, wins: 3 }),
        createDriverViewData({ id: 'driver-2', racesCompleted: 5, wins: 1 }),
      ],
      teams: []
    };

    const viewModel = new DriverLeaderboardViewModel(viewData);

    expect(viewModel.totalRaces).toBe(15);
    expect(viewModel.totalWins).toBe(4);
  });

  it('passes previous rating to items when provided via Record', () => {
    const viewData: LeaderboardsViewData = {
      drivers: [
        createDriverViewData({ id: 'driver-1', rating: 1550 }),
        createDriverViewData({ id: 'driver-2', rating: 1400 }),
      ],
      teams: []
    };

    const previousRatings = {
      'driver-1': 1500,
      'driver-2': 1450,
    };

    const viewModel = new DriverLeaderboardViewModel(viewData, previousRatings);

    expect(viewModel.drivers[0].ratingTrend).toBe('up');
    expect(viewModel.drivers[1].ratingTrend).toBe('down');
  });
});