具有用户权限、客户端权限和限制的 Discord.js 命令处理程序

Posted 2023-03-14

【中文标题】具有用户权限、客户端权限和限制的 Discord.js 命令处理程序

【英文标题】：Discord.js command handler with user permission ,client permission and throttling

【发布时间】：2020-06-24 03:54:41

【问题描述】：

我如何检查用户权限、客户端权限、添加限制和在导出中定义参数，就像 commando 所做的那样

我的消息事件如下所示

client.on('message', async (message) => 

    if (message.author.bot) return;
    if (!message.guild) return;
    let prefix
    await db.collection('guilds').doc(message.guild.id).get().then((q) => 
        if (q.exists) 
            prefix = q.data().prefix || config1.prefix_mention;
         else 
            prefix = "." || config1.prefix_mention;
        
    )
    const prefixRegex = new RegExp(`^(<@!?$client.user.id>|$escapeRegex(prefix))\\s*`);
    if (!prefixRegex.test(message.content)) return;

    const [ matchedPrefix ] = message.content.match(prefixRegex);
    const args = message.content.slice(matchedPrefix.length).trim().split(/ +/g);

    const cmd = args.shift().toLowerCase();
    if (cmd.length === 0) return;

    let command = client.commands.get(cmd);
    if (!command) command = client.commands.get(client.aliases.get(cmd));
    if (!message.channel.permissionsFor(client.user).has("SEND_MESSAGES")) return;

    if (command)
        command.run(client, message, args, db);
)

我如何检查其他权限，例如示例

name: 'osu',
group: 'search',
memberName: 'osu',
description: 'Responds with information on an osu! user.',
clientPermissions: ["EMBED_LINKS","SEND_MESSAGES"],
userPermissions:['VIEW_CHANNEL'],
args: [
 
  key: 'user',
  prompt: 'What user would you like to get information on?',
  type: 'string'
 
],
async run(client ,message ,args) 
  //some code here

【参考方案1】：

你可以得到client.user权限和message.member权限message.channel然后用has.检查一下

关于限流，可以使用cooldowns。这是很好的guide 使用方法。

const  Permissions  = require('discord.js');

if(command.clientPermissions.length > 0) 
    let clientChannelPermissions = message.channel.permissionsFor(message.guild.me);
    clientChannelPermissions = new Permissions(clientChannelPermissions.bitfield);
    if(!clientChannelPermissions.has(command.clientPermissions)) 
        let missingPermissions = command.clientPermissions.filter(perm => clientChannelPermissions.has(perm) === false).join(', ')
        return message.reply(`I can`t execute this command, missing permissions for $missingPermissions`)
    


if(command.userPermissions.length > 0) 
    let memberChannelPermissions = message.channel.permissionsFor(message.member);
    memberChannelPermissions = new Permissions(memberChannelPermissions.bitfield);
    if(!memberChannelPermissions.has(command.clientPermissions)) 
        let missingPermissions = command.clientPermissions.filter(perm => memberChannelPermissions.has(perm) === false).join(', ')
        return message.reply(`I can`t execute this command, you missing permissions for $missingPermissions`)
    

【讨论】：

检查参数怎么样

这个问题需要更详细的研究，命令args可以是用户、角色、频道、关键字，它们的顺序和严格遵守某些参数可以表示为ID、userTAG、提及，名字在某处也很重要。所以，我这里不能给你一些通用的简单的解决方案。

Uncaught Promise Rejection RangeError: 无效的权限字符串或数字。在行clientChannelPermissions = new Permissions(clientChannelPermissions);

我给的权限是clientPermissions:["EMBED_LINKS","SEND_MESSAGES"],

@ETHYT 我正在添加一些修复，忘记返回对象的权限...