javascript 你如何编写清除命令

How do you code a purge command

提问by ilikecookies2015

So I have been search far and wide over the internet, trying to find a possible way to make a purge command. Now I have found quite a lot of different ways to make one, but none of them either suited me in the way I wanted, or simply worked for me. SO to start off, here is my code

所以我一直在互联网上广泛搜索，试图找到一种可能的方法来发出清除命令。现在我找到了很多不同的方法来制作一个，但没有一种方法适合我想要的方式，或者只是对我来说有效。所以开始，这是我的代码

const Discord = require("discord.js"); // use discord.js

const BOT_TOKEN = "secret bot token :)" // bot's token
const PREFIX = "*" // bot's prefix

var eightball = [ // sets the answers to an eightball
    "yes!",
    "no...",
    "maybe?",
    "probably",
    "I don't think so.",
    "never!",
    "you can try...",
    "up to you!",
]

var bot = new Discord.Client(); // sets Discord.Client to bot

bot.on("ready", function() { // when the bot starts up, set its game to Use *help and tell the console "Booted up!"
    bot.user.setGame("Use *info") // sets the game the bot is playing
    console.log("Booted up!") // messages the console Booted up!
});

bot.on("message", function(message) { // when a message is sent
    if (message.author.equals(bot.user)) return; // if the message is sent by a bot, ignore

    if (!message.content.startsWith(PREFIX)) return; // if the message doesn't contain PREFIX (*), then ignore

    var args = message.content.substring(PREFIX.length).split(" "); // removes the prefix from the message
    var command = args[0].toLowerCase(); // sets the command to lowercase (making it incase sensitive)
    var mutedrole = message.guild.roles.find("name", "muted");

    if (command == "help") { // creates a command *help
        var embedhelpmember = new Discord.RichEmbed() // sets a embed box to the variable embedhelpmember
            .setTitle("**List of Commands**\n") // sets the title to List of Commands
            .addField(" - help", "Displays this message (Correct usage: *help)") // sets the first field to explain the command *help
            .addField(" - info", "Tells info about myself :grin:") // sets the field information about the command *info
            .addField(" - ping", "Tests your ping (Correct usage: *ping)") // sets the second field to explain the command *ping
            .addField(" - cookie", "Sends a cookie to the desired player! :cookie: (Correct usage: *cookie @username)") // sets the third field to explain the command *cookie
            .addField(" - 8ball", "Answers to all of your questions! (Correct usage: *8ball [question])") // sets the field to the 8ball command
            .setColor(0xFFA500) // sets the color of the embed box to orange
            .setFooter("You need help, do you?") // sets the footer to "You need help, do you?"
        var embedhelpadmin = new Discord.RichEmbed() // sets a embed box to the var embedhelpadmin
            .setTitle("**List of Admin Commands**\n") // sets the title
            .addField(" - say", "Makes the bot say whatever you want (Correct usage: *say [message])")
            .addField(" - mute", "Mutes a desired member with a reason (Coorect usage: *mute @username [reason])") // sets a field
            .addField(" - unmute", "Unmutes a muted player (Correct usage: *unmute @username)")
            .addField(" - kick", "Kicks a desired member with a reason (Correct usage: *kick @username [reason])") //sets a field
            .setColor(0xFF0000) // sets a color
            .setFooter("Ooo, an admin!") // sets the footer
        message.channel.send(embedhelpmember); // sends the embed box "embedhelpmember" to the chatif
        if(message.member.roles.some(r=>["bot-admin"].includes(r.name)) ) return message.channel.send(embedhelpadmin); // if member is a botadmin, display this too
    }

    if (command == "info") { // creates the command *info
        message.channel.send("Hey! My name is cookie-bot and I'm here to assist you! You can do *help to see all of my commands! If you have any problems with the Minecraft/Discord server, you can contact an administrator! :smile:") // gives u info
    }

    if (command == "ping") { // creates a command *ping
        message.channel.send("Pong!"); // answers with "Pong!"
    }

    if (command == "cookie") { // creates the command cookie
        if (args[1]) message.channel.send(message.author.toString() + " has given " + args[1].toString() + " a cookie! :cookie:") // sends the message saying someone has given someone else a cookie if someone mentions someone else
        else message.channel.send("Who do you want to send a cookie to? :cookie: (Correct usage: *cookie @username)") // sends the error message if no-one is mentioned
    }

    if (command == "8ball") { // creates the command 8ball
        if (args[1] != null) message.reply(eightball[Math.floor(Math.random() * eightball.length).toString(16)]); // if args[1], post random answer
        else message.channel.send("Ummmm, what is your question? :rolling_eyes: (Correct usage: *8ball [question])"); // if not, error
    }

    if (command == "say") { // creates command say
        if (!message.member.roles.some(r=>["bot-admin"].includes(r.name)) ) return message.reply("Sorry, you do not have the permission to do this!");
        var sayMessage = message.content.substring(4)
        message.delete().catch(O_o=>{});
        message.channel.send(sayMessage);
    }

    if(command === "purge") {
        let messagecount = parseInt(args[1]) || 1;

        var deletedMessages = -1;

        message.channel.fetchMessages({limit: Math.min(messagecount + 1, 100)}).then(messages => {
            messages.forEach(m => {
                if (m.author.id == bot.user.id) {
                    m.delete().catch(console.error);
                    deletedMessages++;
                }
            });
        }).then(() => {
                if (deletedMessages === -1) deletedMessages = 0;
                message.channel.send(`:white_check_mark: Purged \`${deletedMessages}\` messages.`)
                    .then(m => m.delete(2000));
        }).catch(console.error);
    }

    if (command == "mute") { // creates the command mute
        if (!message.member.roles.some(r=>["bot-admin"].includes(r.name)) ) return message.reply("Sorry, you do not have the permission to do this!"); // if author has no perms
        var mutedmember = message.mentions.members.first(); // sets the mentioned user to the var kickedmember
        if (!mutedmember) return message.reply("Please mention a valid member of this server!") // if there is no kickedmmeber var
        if (mutedmember.hasPermission("ADMINISTRATOR")) return message.reply("I cannot mute this member!") // if memebr is an admin
        var mutereasondelete = 10 + mutedmember.user.id.length //sets the length of the kickreasondelete
        var mutereason = message.content.substring(mutereasondelete).split(" "); // deletes the first letters until it reaches the reason
        var mutereason = mutereason.join(" "); // joins the list kickreason into one line
        if (!mutereason) return message.reply("Please indicate a reason for the mute!") // if no reason
        mutedmember.addRole(mutedrole) //if reason, kick
            .catch(error => message.reply(`Sorry ${message.author} I couldn't mute because of : ${error}`)); //if error, display error
        message.reply(`${mutedmember.user} has been muted by ${message.author} because: ${mutereason}`); // sends a message saying he was kicked
    }

    if (command == "unmute") { // creates the command unmute
        if (!message.member.roles.some(r=>["bot-admin"].includes(r.name)) ) return message.reply("Sorry, you do not have the permission to do this!"); // if author has no perms
        var unmutedmember = message.mentions.members.first(); // sets the mentioned user to the var kickedmember
        if (!unmutedmember) return message.reply("Please mention a valid member of this server!") // if there is no kickedmmeber var
        unmutedmember.removeRole(mutedrole) //if reason, kick
            .catch(error => message.reply(`Sorry ${message.author} I couldn't mute because of : ${error}`)); //if error, display error
        message.reply(`${unmutedmember.user} has been unmuted by ${message.author}!`); // sends a message saying he was kicked
    }

    if (command == "kick") { // creates the command kick
        if (!message.member.roles.some(r=>["bot-admin"].includes(r.name)) ) return message.reply("Sorry, you do not have the permission to do this!"); // if author has no perms
        var kickedmember = message.mentions.members.first(); // sets the mentioned user to the var kickedmember
        if (!kickedmember) return message.reply("Please mention a valid member of this server!") // if there is no kickedmmeber var
        if (!kickedmember.kickable) return message.reply("I cannot kick this member!") // if the member is unkickable
        var kickreasondelete = 10 + kickedmember.user.id.length //sets the length of the kickreasondelete
        var kickreason = message.content.substring(kickreasondelete).split(" "); // deletes the first letters until it reaches the reason
        var kickreason = kickreason.join(" "); // joins the list kickreason into one line
        if (!kickreason) return message.reply("Please indicate a reason for the kick!") // if no reason
        kickedmember.kick(kickreason) //if reason, kick
            .catch(error => message.reply(`Sorry @${message.author} I couldn't kick because of : ${error}`)); //if error, display error
        message.reply(`${kickedmember.user.username} has been kicked by ${message.author.username} because: ${kickreason}`); // sends a message saying he was kicked
    }

});

bot.login(BOT_TOKEN); // connects to the bot

It is the only file in my bot folder except the package.json, package-lock.json and all the node_modules.

它是我的 bot 文件夹中唯一的文件，除了 package.json、package-lock.json 和所有 node_modules。

What I'm trying to do is type in discord *purge [number of messages I want to purge] and get the bot to delete the amount of the messages I asked it to delete, PLUS the command I entered (for example, if I ask the bot to delete 5 messages, he deletes 6 including the *purge 5 message.

我想要做的是输入 discord *purge [我想清除的消息数量] 并让机器人删除我要求它删除的消息数量，加上我输入的命令（例如，如果我要求机器人删除 5 条消息，他删除了 6 条，包括 *purge 5 消息。

Any help would be much appreciated, thanks!

任何帮助将不胜感激，谢谢！

回答by Kaynn

What you are looking for is this(bulkDelete()) method for Discord.js.

你所寻找的是这个（bulkDelete()）的方法Discord.js。

It bulk deletes a message, just simply pass in a collection of message in the method and it will do the job for you.
(You can use messagesproperty from channel, otherwise if you prefer promises, then try fetchMessages()method. )

它批量删除一条消息，只需在方法中传入一组消息，它就会为您完成这项工作。
（您可以使用messageschannel 中的属性，否则如果您更喜欢 promise，请尝试fetchMessages()方法。）

Just make sure that the channel is not a voice channel, or a DM channel. And finally, your bot needs to have permission too.

只需确保该频道不是语音频道或 DM 频道。最后，您的机器人也需要获得许可。

You can get your own bot's permission for the guild using message.guild.member(client).permissions, or you can just directly use message.guild.member(client).hasPermission(permission), which returns a boolean that determines if your bot have a desired permission.
(The method docs for hasPermission()is here)

您可以使用 获得您自己的机器人对公会的许可message.guild.member(client).permissions，或者您可以直接使用message.guild.member(client).hasPermission(permission)，它返回一个布尔值，以确定您的机器人是否具有所需的权限。
（对于该方法文档hasPermission()是这里）

回答by MSFT Server

note sure if this is still relevant but this what i use in my bots

请注意确定这是否仍然相关，但这是我在我的机器人中使用的

     if (!suffix) {
    var newamount = "2";
  } else {
    var amount = Number(suffix);
    var adding = 1;
    var newamount = amount + adding;
  }
  let messagecount = newamount.toString();
  msg.channel
    .fetchMessages({
      limit: messagecount
    })
    .then(messages => {
      msg.channel.bulkDelete(messages);
      // Logging the number of messages deleted on both the channel and console.
      msg.channel
        .send(
          "Deletion of messages successful. \n Total messages deleted including command: " +
            newamount
        )
        .then(message => message.delete(5000));
      console.log(
        "Deletion of messages successful. \n Total messages deleted including command: " +
          newamount
      );
    })
    .catch(err => {
      console.log("Error while doing Bulk Delete");
      console.log(err);
    });

basic function is to specify number of messages to purge and it will delete that many plus the command used, the full example is here

基本功能是指定要清除的消息数，它将删除那么多加上使用的命令，完整的例子是here