import WebSocket from "ws";
import { Character } from "./character.js";
import { Config } from "./../config.js";

/**
 * Player Account.
 *
 * Contain persistent player account info.
 */
export class Player {
  /** @protected @type {string} unique username */
  _username;
  get username() {
    return this._username;
  }

  /** @protected @type {string} */
  _passwordHash;
  get passwordHash() {
    return this._passwordHash;
  }

  /** @protected @type {string} random salt used for hashing */
  _salt;
  get salt() {
    return this._salt;
  }

  /** @protected @type {Date} */
  _createdAt = new Date();
  get createdAt() {
    return this._createdAt;
  }

  /** @type {Date} */
  blockedUntil;

  /** @type {Date|null} Date of the player's last websocket message. */
  lastActivityAt = null;

  /** @type {Date|null} Date of the player's last login. */
  lastSucessfulLoginAt = null;

  /** @type {number} Number of successful logins on this character */
  successfulLogins = 0;

  /** @type {number} Number of failed login attempts since the last good login attempt */
  failedPasswordsSinceLastLogin = 0;

  /** @protected @type {Set<Character>} */
  _characters = new Set(); // should this be a WeakSet? After all if the player is removed, their items might remain in the system, right?
  get characters() {
    return this._characters;
  }

  /**
   * @param {string} username
   * @param {string} passwordHash
   * @param {string} salt
   */
  constructor(username, passwordHash, salt) {
    this._username = username;
    this._passwordHash = passwordHash;
    this._salt = salt;
    this._createdAt = new Date();
  }

  setPasswordHash(hashedPassword) {
    this._passwordHash = hashedPassword;
  }

  /**
   * Add a character to the player's party
   *
   * @param {Character} character
   * @returns {number|false} the new size of the players party if successful, or false if the character could not be added.
   */
  addCharacter(character) {
    if (this._characters.has(character)) {
      return false;
    }

    if (this._characters.size >= Config.maxPartySize) {
      return false;
    }

    this._characters.add(character);

    return this._characters.size;
  }
}