import { HelloPacket } from '../../net';

/**
 * @module core/models
 */
/**
 * An object representing the state of a client which is connecting to the game server.
 */
export interface GameState {
  /**
   * The build version of this state.
   */
  buildVersion: string;
  /**
   * The character id of this state.
   */
  characterId: number;
  /**
   * The game ID of this state.
   */
  gameId: number;
  /**
   * The key of this state.
   */
  key: number[];
  /**
   * The key time of this state.
   */
  keyTime: number;
}

/**
 * Checks whether the `gameState` object has the right
 * properties to implement the `GameState` interface.
 * @param gameState The object to check.
 */
export function isGameState(gameState: any): gameState is GameState {
  return gameState
    && typeof gameState.buildVersion === 'string'
    && typeof gameState.characterId === 'number'
    && typeof gameState.gameId === 'number';
}

/**
 * Creates a `HelloPacket` with the `gameState`
 * properties copied to the hello packet.
 * @param gameState The game state to use.
 */
export function createHello(gameState: GameState): HelloPacket {
  const helloPacket: HelloPacket = new HelloPacket();
  helloPacket.buildVersion = gameState.buildVersion;
  helloPacket.gameId = gameState.gameId;
  helloPacket.keyTime = gameState.keyTime;
  helloPacket.key = gameState.key;
  helloPacket.gameNet = 'rotmg';
  helloPacket.playPlatform = 'rotmg';
  return helloPacket;
}