37 lines
1.8 KiB
TypeScript
37 lines
1.8 KiB
TypeScript
import type { ILeagueMembershipRepository } from '../../domain/repositories/ILeagueMembershipRepository';
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import type { IRaceRepository } from '../../domain/repositories/IRaceRepository';
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import type { LeagueStatsViewModel } from '../presenters/ILeagueStatsPresenter';
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import type { DriverRatingProvider } from '../ports/DriverRatingProvider';
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import { Result } from '@core/shared/application/Result';
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import type { ApplicationErrorCode } from '@core/shared/errors/ApplicationErrorCode';
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export interface GetLeagueStatsUseCaseParams {
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leagueId: string;
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}
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export class GetLeagueStatsUseCase {
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constructor(
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private readonly leagueMembershipRepository: ILeagueMembershipRepository,
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private readonly raceRepository: IRaceRepository,
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private readonly driverRatingProvider: DriverRatingProvider,
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) {}
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async execute(params: GetLeagueStatsUseCaseParams): Promise<Result<LeagueStatsViewModel, ApplicationErrorCode<'REPOSITORY_ERROR'>>> {
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try {
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const memberships = await this.leagueMembershipRepository.getLeagueMembers(params.leagueId);
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const races = await this.raceRepository.findByLeagueId(params.leagueId);
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const driverIds = memberships.map(m => m.driverId);
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const ratings = this.driverRatingProvider.getRatings(driverIds);
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const validRatings = Array.from(ratings.values()).filter(r => r !== null) as number[];
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const averageRating = validRatings.length > 0 ? Math.round(validRatings.reduce((sum, r) => sum + r, 0) / validRatings.length) : 0;
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const viewModel: LeagueStatsViewModel = {
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totalMembers: memberships.length,
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totalRaces: races.length,
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averageRating,
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};
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return Result.ok(viewModel);
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} catch {
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return Result.err({ code: 'REPOSITORY_ERROR', message: 'Failed to fetch league stats' });
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}
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}
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} |