如果用户在 discord.js 中提供了 20 条消息（超过 14 天）进行批量删除，我如何仅删除 10 条消息

Question

我是 Discord.js 的新手，我最近做了一个“清除”命令，它看起来像这样-

if (message.content.toLowerCase().startsWith(prefix + "purge") || message.content.toLowerCase().startsWith(prefix + "clear")) {
    const args = message.content.split(' ').slice(1); // All arguments behind the command name with the prefix
    const amount = args.join(' '); // Amount of messages which should be deleted
    if (message.channel.type === "DM") return message.reply('Cannot run command inside DMs.')
    if (!message.member.hasPermission('MANAGE_MESSAGES') || !message.member.hasPermission('ADMINISTRATOR')) return message.channel.reply('You do not have enough permissions to run this command')
    if (!message.guild.me.hasPermission('MANAGE_MESSAGES') || !message.guild.me.hasPermission('ADMINISTRATOR')) return message.reply('I do not have permission to delete messages.')
    if (!amount) return message.reply('You haven\'t given an amount of messages which should be deleted!'); // Checks if the `amount` parameter is given
    if (isNaN(amount)) return message.reply('The amount parameter isn`t a number!'); // Checks if the `amount` parameter is a number. If not, the command throws an error
    if (amount > 99) return message.reply('You can`t delete more than 99 messages at once!'); // Checks if the `amount` integer is bigger than 100
    if (amount < 1) return message.reply('You have to delete at least 1 message!'); // Checks if the `amount` integer is smaller than 1
    message.channel.messages.fetch({
        limit: amount
    }).then(messages => { // Fetches the messages
        message.channel.bulkDelete(messages) // Bulk deletes all messages that have been fetched and are not older than 14 days (due to the Discord API)
        message.channel.send(`Deleted ${amount} messages. Messages purged by ${message.author.username}`)
    });
}
}

所以问题是，当我在旧服务器上用旧消息测试我的机器人时，有 23 条新消息和 44 条旧消息。我试图删除 50 条消息。它所做的只是在控制台中记录错误并发送一条消息，指出 50 条消息已被删除。它并没有真正删除 50 条消息，但它发送了一条它确实删除的消息。是否可以仅删除可以删除的最大消息数，然后发送一条消息，说明实际删除了多少消息，这会有所帮助。我举个例子——我想删除 50 条消息，但 10 条不到 14 天，其余超过 14 天。该机器人将删除 10 条消息（它可以像 Carl 机器人一样删除的最大值。）

Answer 1

TextChannel.bulkDelete() 中有一个filterOld 参数。以下是你如何实现它：

<TextChannel>.bulkDelete(100, true);
//<TextChannel> just means instance of TextChannel, like message.channel

Answer 2

要删除号码消息，您只需在.bulkDelete 方法中提供号码消息。并且您需要等到使用.then 完成删除，而不是像提供代码一样在删除后立即发送它

示例代码

if (message.content.toLowerCase().startsWith(prefix + "purge") || message.content.toLowerCase().startsWith(prefix + "clear")) {
    const args = message.content.split(' ').slice(1); // All arguments behind the command name with the prefix
    const amount = args.join(' '); // Amount of messages which should be deleted
    if (message.channel.type === "DM") return message.reply('Cannot run command inside DMs.')
    if (!message.member.hasPermission('MANAGE_MESSAGES') || !message.member.hasPermission('ADMINISTRATOR')) return message.channel.reply('You do not have enough permissions to run this command')
    if (!message.guild.me.hasPermission('MANAGE_MESSAGES') || !message.guild.me.hasPermission('ADMINISTRATOR')) return message.reply('I do not have permission to delete messages.')
    if (!amount) return message.reply('You haven\'t given an amount of messages which should be deleted!'); // Checks if the `amount` parameter is given
    if (isNaN(amount)) return message.reply('The amount parameter isn`t a number!'); // Checks if the `amount` parameter is a number. If not, the command throws an error
    if (amount > 99) return message.reply('You can`t delete more than 99 messages at once!'); // Checks if the `amount` integer is bigger than 100
    if (amount < 1) return message.reply('You have to delete at least 1 message!'); // Checks if the `amount` integer is smaller than 1
    message.channel.bulkDelete(amount).then(messages => { // Fetches the messages
        message.channel.send(`Deleted ${messages.size} messages. Messages purged by ${message.author.username}`)
    });
}