import { Injectable, Logger } from '@nestjs/common';
import { Player } from './player';
import {
  InvalidPlayerNameException,
  MissingPlayerNameException,
  PlayerNotFoundException,
} from 'src/exceptions';
import { Socket } from 'socket.io/dist/socket';

@Injectable()
export class PlayerService {
  private readonly logger = new Logger(PlayerService.name);
  private readonly players: Map<string, Player> = new Map();
  private readonly userNameValidator: RegExp = /^[a-zA-Z\s]{1,20}$/;

  createPlayer(socket: Socket) {
    const player: Player = new Player(socket);
    this.players.set(player.socketId, player);
  }

  addUserName(socketId: string, userName: string) {
    if (!userName) {
      throw new MissingPlayerNameException();
    }
    if (!this.userNameValidator.test(userName)) {
      throw new InvalidPlayerNameException(userName);
    }
    this.players.get(socketId).userName = userName;
  }

  getPlayer(socketId: string): Player {
    const player = this.players.get(socketId);
    if (!player) {
      throw new PlayerNotFoundException(socketId);
    }
    return player;
  }
}