@jsprismarine/prismarine/dist/ban/BanManager.es.js

Dedicated Minecraft Bedrock Edition server written in TypeScript

import fs from 'node:fs';
import { parseJSON5 } from 'confbox';
import { withCwd } from '../utils/cwd.es.js';

const FILE_NAME = "banned-players.json";
class BanManager {
  server;
  banned = /* @__PURE__ */ new Map();
  constructor(server) {
    this.server = server;
  }
  /**
   * On enable hook.
   * @group Lifecycle
   */
  async enable() {
    await this.parseBanned();
  }
  /**
   * On disable hook.
   * @group Lifecycle
   */
  async disable() {
    this.banned.clear();
  }
  async parseBanned() {
    try {
      const dir = withCwd(FILE_NAME);
      if (!fs.existsSync(dir)) {
        this.server.getLogger().warn(`Failed to load ban list!`);
        fs.writeFileSync(dir, "[]");
      }
      const banned = parseJSON5((await fs.promises.readFile(dir)).toString());
      for (const player of banned) this.banned.set(player.name, player);
    } catch (error) {
      this.server.getLogger().error(error);
    }
  }
  async setBanned(username, reason = "") {
    this.banned.set(username, {
      reason
    });
    await fs.promises.writeFile(
      // FIXME: This overwrites comments in the file.
      withCwd(FILE_NAME),
      JSON.stringify(
        Array.from(this.banned).map((entry) => ({
          name: entry[0],
          reason: entry[1].reason
        })),
        null,
        4
      )
    );
    return true;
  }
  async setUnbanned(username) {
    this.banned.delete(username);
    await fs.promises.writeFile(
      // FIXME: This overwrites comments in the file.
      withCwd(FILE_NAME),
      JSON.stringify(
        Array.from(this.banned).map((entry) => ({
          name: entry[0],
          reason: entry[1].reason
        })),
        null,
        4
      )
    );
  }
  /**
   * Check if player is banned.
   * @param {Player} player - Player to check.
   * @returns {string | boolean} Reason if banned, false if not banned.
   */
  isBanned(player) {
    if (this.banned.has(player.getName())) {
      return this.banned.get(player.getName())?.reason || true;
    }
    return false;
  }
}

export { BanManager as default };
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