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

import { v4 as uuidv4 } from 'uuid';
import { Driver } from '@gridpilot/racing/domain/entities/Driver';
import type { IDriverRepository } from '@gridpilot/racing/domain/repositories/IDriverRepository';
import type { ILogger } from '@gridpilot/shared/logging/ILogger';

export class InMemoryDriverRepository implements IDriverRepository {
  private drivers: Map<string, Driver>;
  private readonly logger: ILogger;

  constructor(logger: ILogger, seedData?: Driver[]) {
    this.logger = logger;
    this.logger.info('InMemoryDriverRepository initialized.');
    this.drivers = new Map();
    
    if (seedData) {
      seedData.forEach(driver => {
        this.drivers.set(driver.id, driver);
        this.logger.debug(`Seeded driver: ${driver.id}.`);
      });
    }
  }

  async findById(id: string): Promise<Driver | null> {
    this.logger.debug(`Finding driver by id: ${id}`);
    try {
      const driver = this.drivers.get(id) ?? null;
      if (driver) {
        this.logger.info(`Found driver: ${id}.`);
      } else {
        this.logger.warn(`Driver with id ${id} not found.`);
      }
      return driver;
    } catch (error) {
      this.logger.error(`Error finding driver by id ${id}:`, error);
      throw error;
    }
  }

  async findByIRacingId(iracingId: string): Promise<Driver | null> {
    this.logger.debug(`Finding driver by iRacing id: ${iracingId}`);
    try {
      const driver = Array.from(this.drivers.values()).find(
        d => d.iracingId === iracingId
      );
      if (driver) {
        this.logger.info(`Found driver with iRacing id: ${iracingId}.`);
      } else {
        this.logger.warn(`Driver with iRacing id ${iracingId} not found.`);
      }
      return driver ?? null;
    } catch (error) {
      this.logger.error(`Error finding driver by iRacing id ${iracingId}:`, error);
      throw error;
    }
  }

  async findAll(): Promise<Driver[]> {
    this.logger.debug('Finding all drivers.');
    try {
      const drivers = Array.from(this.drivers.values());
      this.logger.info(`Found ${drivers.length} drivers.`);
      return drivers;
    } catch (error) {
      this.logger.error('Error finding all drivers:', error);
      throw error;
    }
  }

  async create(driver: Driver): Promise<Driver> {
    this.logger.debug(`Creating driver: ${driver.id}`);
    try {
      if (await this.exists(driver.id)) {
        this.logger.warn(`Driver with ID ${driver.id} already exists.`);
        throw new Error(`Driver with ID ${driver.id} already exists`);
      }

      if (await this.existsByIRacingId(driver.iracingId)) {
        this.logger.warn(`Driver with iRacing ID ${driver.iracingId} already exists.`);
        throw new Error(`Driver with iRacing ID ${driver.iracingId} already exists`);
      }

      this.drivers.set(driver.id, driver);
      this.logger.info(`Driver ${driver.id} created successfully.`);
      return driver;
    } catch (error) {
      this.logger.error(`Error creating driver ${driver.id}:`, error);
      throw error;
    }
  }

  async update(driver: Driver): Promise<Driver> {
    this.logger.debug(`Updating driver: ${driver.id}`);
    try {
      if (!await this.exists(driver.id)) {
        this.logger.warn(`Driver with ID ${driver.id} not found for update.`);
        throw new Error(`Driver with ID ${driver.id} not found`);
      }

      this.drivers.set(driver.id, driver);
      this.logger.info(`Driver ${driver.id} updated successfully.`);
      return driver;
    } catch (error) {
      this.logger.error(`Error updating driver ${driver.id}:`, error);
      throw error;
    }
  }

  async delete(id: string): Promise<void> {
    this.logger.debug(`Deleting driver: ${id}`);
    try {
      if (!await this.exists(id)) {
        this.logger.warn(`Driver with ID ${id} not found for deletion.`);
        throw new Error(`Driver with ID ${id} not found`);
      }

      this.drivers.delete(id);
      this.logger.info(`Driver ${id} deleted successfully.`);
    } catch (error) {
      this.logger.error(`Error deleting driver ${id}:`, error);
      throw error;
    }
  }

  async exists(id: string): Promise<boolean> {
    this.logger.debug(`Checking existence of driver with id: ${id}`);
    try {
      const exists = this.drivers.has(id);
      this.logger.debug(`Driver ${id} exists: ${exists}.`);
      return exists;
    } catch (error) {
      this.logger.error(`Error checking existence of driver with id ${id}:`, error);
      throw error;
    }
  }

  async existsByIRacingId(iracingId: string): Promise<boolean> {
    this.logger.debug(`Checking existence of driver with iRacing id: ${iracingId}`);
    try {
      const exists = Array.from(this.drivers.values()).some(
        d => d.iracingId === iracingId
      );
      this.logger.debug(`Driver with iRacing id ${iracingId} exists: ${exists}.`);
      return exists;
    } catch (error) {
      this.logger.error(`Error checking existence of driver with iRacing id ${iracingId}:`, error);
      throw error;
    }
  }

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