限制用户对消息的反应

Question

我正在用 JavaScript 为 Discord 构建一个简单的轮询机器人，现在我正在尝试实现每个用户对消息的最大反应数。

例如，假设我们有以下投票问题选项：

问题？

1. 选项 A

2. 选项 B

3. 选项 C

4. 选项 D

5. 选项 E

每个“选项”都是对机器人给出的消息的反应，我想确保用户不能对超过3个选项做出反应。

• 我的思路是做一个messageReactionAdd监听器，然后当用户4th time反应4th time ，删除最后一个反应，给他发送一条消息“你已经投票3 times ，请删除一个反应再投票”。
• 尽管如此，我仍然试图浏览对象以找到每个用户的总反应计数我可以找到每个表情符号的总反应计数但这不是我需要的。

有人可以让我对此有所了解吗？

编辑

用于发送消息的代码：

Embed = new Discord.MessageEmbed()
                .setColor(0x6666ff)
                .setTitle(question)
                .setDescription(optionsList);

                message.channel.send(Embed).then(messageReaction => {

                for (var i = 0; i < options.length; i++){
                    messageReaction.react(emojiAlphabet[i][0]);
                }

                message.delete().catch(console.error);
              });

Answer 1

尝试这个：

const {Collection} = require('discord.js')

// the messages that users can only react 3 times with
const polls = new Set()
// Collection<Message, Collection<User, number>>: stores how many times a user has reacted on a message
const reactionCount = new Collection()

// when you send a poll add the message the bot sent to the set:
polls.add(message)

client.on('messageReactionAdd', (reaction, user) => {
  // edit: so that this does not run when the bot reacts
  if (user.id === client.user.id) return

  const {message} = reaction

  // only do the following if the message is one of the polls
  if (polls.has(message)) {
    // if message hasn't been added to collection add it
    if (!reactionCount.get(message)) reactionCount.set(message, new Collection())
    // reaction counts for this message
    const userCount = reactionCount.get(message)
    // add 1 to the user's reaction count
    userCount.set(user, (userCount.get(user) || 0) + 1)

    if (userCount.get(user) > 3) {
      reaction.users.remove(user)
      // <@!id> mentions the user (using their nickname if they have one)
      message.channel.send(`<@!${user.id}>, you've already voted 3 times, please remove a reaction to vote again.`)
    }
  }
})

client.on('messageReactionRemove', (reaction, user) => {
  // edit: so that this does not run when the bot reacts
  if (user.id === client.user.id) return

  const {message} = reaction
  const userCount = reactionCount.get(message)
  // subtract 1 from user's reaction count
  if (polls.has(message)) userCount.set(user, reactionCount.get(message).get(user) - 1)
})