/**
 * Infrastructure Adapter: InMemoryLeagueRepository
 * 
 * In-memory implementation of ILeagueRepository.
 * Stores data in Map structure with UUID generation.
 */

import { v4 as uuidv4 } from 'uuid';
import { League } from '@gridpilot/racing/domain/entities/League';
import type { ILeagueRepository } from '@gridpilot/racing/domain/repositories/ILeagueRepository';

export class InMemoryLeagueRepository implements ILeagueRepository {
  private leagues: Map<string, League>;

  constructor(seedData?: League[]) {
    this.leagues = new Map();
    
    if (seedData) {
      seedData.forEach(league => {
        this.leagues.set(league.id, league);
      });
    }
  }

  async findById(id: string): Promise<League | null> {
    return this.leagues.get(id) ?? null;
  }

  async findAll(): Promise<League[]> {
    return Array.from(this.leagues.values());
  }

  async findByOwnerId(ownerId: string): Promise<League[]> {
    return Array.from(this.leagues.values()).filter(
      league => league.ownerId === ownerId
    );
  }

  async create(league: League): Promise<League> {
    if (await this.exists(league.id)) {
      throw new Error(`League with ID ${league.id} already exists`);
    }

    this.leagues.set(league.id, league);
    return league;
  }

  async update(league: League): Promise<League> {
    if (!await this.exists(league.id)) {
      throw new Error(`League with ID ${league.id} not found`);
    }

    this.leagues.set(league.id, league);
    return league;
  }

  async delete(id: string): Promise<void> {
    if (!await this.exists(id)) {
      throw new Error(`League with ID ${id} not found`);
    }

    this.leagues.delete(id);
  }

  async exists(id: string): Promise<boolean> {
    return this.leagues.has(id);
  }

  async searchByName(query: string): Promise<League[]> {
    const normalizedQuery = query.toLowerCase();
    return Array.from(this.leagues.values()).filter(league =>
      league.name.toLowerCase().includes(normalizedQuery)
    );
  }

  /**
   * Utility method to generate a new UUID
   */
  static generateId(): string {
    return uuidv4();
  }
}