import type { IRankingService, DriverRanking } from '@core/racing/domain/services/IRankingService';
import type { Logger } from '@core/shared/application';
import { DriverStatsStore } from './DriverStatsStore';

export class InMemoryRankingService implements IRankingService {
  constructor(private readonly logger: Logger) {
    this.logger.info('InMemoryRankingService initialized.');
  }

  getAllDriverRankings(): DriverRanking[] {
    this.logger.debug('[InMemoryRankingService] Getting all driver rankings.');

    // Get stats from the DriverStatsStore
    const statsStore = DriverStatsStore.getInstance();
    const allStats = statsStore.getAllStats();
    
    // Convert stats to rankings
    const rankings: DriverRanking[] = [];
    
    allStats.forEach((stats, driverId) => {
      rankings.push({
        driverId,
        rating: stats.rating,
        overallRank: stats.overallRank ?? 0,
      });
    });

    // Sort by rating descending to get proper rankings
    rankings.sort((a, b) => b.rating - a.rating);
    
    // Assign ranks
    rankings.forEach((ranking, index) => {
      ranking.overallRank = index + 1;
    });

    return rankings;
  }
}