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

import { v4 as uuidv4 } from 'uuid';
import { Track, TrackCategory } from '@gridpilot/racing/domain/entities/Track';
import type { ITrackRepository } from '@gridpilot/racing/domain/repositories/ITrackRepository';

export class InMemoryTrackRepository implements ITrackRepository {
  private tracks: Map<string, Track>;

  constructor(seedData?: Track[]) {
    this.tracks = new Map();
    
    if (seedData) {
      seedData.forEach(track => {
        this.tracks.set(track.id, track);
      });
    }
  }

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

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

  async findByGameId(gameId: string): Promise<Track[]> {
    return Array.from(this.tracks.values())
      .filter(track => track.gameId === gameId)
      .sort((a, b) => a.name.localeCompare(b.name));
  }

  async findByCategory(category: TrackCategory): Promise<Track[]> {
    return Array.from(this.tracks.values())
      .filter(track => track.category === category)
      .sort((a, b) => a.name.localeCompare(b.name));
  }

  async findByCountry(country: string): Promise<Track[]> {
    return Array.from(this.tracks.values())
      .filter(track => track.country.toLowerCase() === country.toLowerCase())
      .sort((a, b) => a.name.localeCompare(b.name));
  }

  async searchByName(query: string): Promise<Track[]> {
    const lowerQuery = query.toLowerCase();
    return Array.from(this.tracks.values())
      .filter(track => 
        track.name.toLowerCase().includes(lowerQuery) ||
        track.shortName.toLowerCase().includes(lowerQuery)
      )
      .sort((a, b) => a.name.localeCompare(b.name));
  }

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

    this.tracks.set(track.id, track);
    return track;
  }

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

    this.tracks.set(track.id, track);
    return track;
  }

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

    this.tracks.delete(id);
  }

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

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