javascript - 限制用户对消息的反应

Question

我正在为 JavaScript 中的 Discord 构建一个简单的投票机器人，现在我正在尝试实现每个用户对消息的最大反应数。

例如，假设我们对投票问题有以下选项：

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这些选项做出反应。 3

• 我的思路是做一个messageReactionAdd监听器，然后当用户对 做出反应时4th time，删除最后一个反应，向他发送一条消息，例如“您已经投票3 times，请删除反应以再次投票”。
• 尽管如此，我仍然试图在对象中导航以查找每个用户的总反应数，我可以找到 每个表情符号的总反应数，但这不是我需要的。

有人可以给我一些见解吗？

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);
              });

标签： javascriptdiscord.js

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)
})