我正在为JavaScript中的Discord构建一个简单的poll bot，现在我正在尝试实现每个用户对消息的最大反应数。
例如，假设我们对一个投票问题有以下选项:
那个问题？
>
选项A
备选案文B
备选案文C
选项D
备选案文E
每个“选项”都是对bot给出的消息的反应，我希望确保用户对这些选项中的3以上的反应。
MessageReactionAdd侦听器，然后当用户对4次作出反应时，删除最后一次反应，向他发送一条消息，如“您已经对3次投票了，请删除一个反应以再次投票”。有人能给我一些关于这方面的见解吗？
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);
});
请尝试以下操作:
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)
})
