数据库的MessageCreate.js前缀问题- Discord.js v13/MongoDB

const { MongoClient } = require('mongodb');
const { Client, Intents } = require('discord.js');

const client = new Client({ intents: [Intents.FLAGS.GUILDS, Intents.FLAGS.GUILD_MESSAGES] });

// MongoDB连接字符串
const mongoURI = 'mongodb://localhost:27017/mydatabase';

// 连接到MongoDB数据库
const connectToMongoDB = async () => {
  try {
    const client = new MongoClient(mongoURI);
    await client.connect();
    console.log('Connected to MongoDB');
    return client.db();
  } catch (error) {
    console.error('Failed to connect to MongoDB', error);
  }
};

// 处理消息事件
client.on('messageCreate', async (message) => {
  // 获取消息前缀
  const prefix = await getPrefixFromDatabase(message.guild.id);

  // 检查消息是否以前缀开头
  if (message.content.startsWith(prefix)) {
    // 提取命令和参数
    const [command, ...args] = message.content.slice(prefix.length).trim().split(' ');

    // 执行相应的命令逻辑
    if (command === 'ping') {
      message.reply('Pong!');
    } else if (command === 'say') {
      message.channel.send(args.join(' '));
    }
  }
});

// 从数据库中获取前缀
const getPrefixFromDatabase = async (guildId) => {
  const db = await connectToMongoDB();
  const guildCollection = db.collection('guilds');
  const guild = await guildCollection.findOne({ guildId });

  if (guild && guild.prefix) {
    return guild.prefix;
  }

  return '!';
};

// 启动Bot
client.login('YOUR_DISCORD_TOKEN');