TUTO DEV #4 - CREER UN BOT DISCORD : FAIRE UN REACTION ROLE

// index.js
const Discord = require('discord.js'),
    client = new Discord.Client({
        fetchAllMembers: true,
        partials: ['MESSAGE', 'REACTION']
    }),
    config = require('./config.json'),
    fs = require('fs')

client.login(config.token)
client.commands = new Discord.Collection()

fs.readdir('./commands', (err, files) => {
    if (err) throw err
    files.forEach(file => {
        if (!file.endsWith('.js')) return
        const command = require(`./commands/${file}`)
        client.commands.set(command.name, command)
    })
})

client.on('message', message => {
    if (message.type !== 'DEFAULT' || message.author.bot) return

    const args = message.content.trim().split(/ +/g)
    const commandName = args.shift().toLowerCase()
    if (!commandName.startsWith(config.prefix)) return
    const command = client.commands.get(commandName.slice(config.prefix.length))
    if (!command) return
    command.run(message, args, client)
})

client.on('guildMemberAdd', member => {
    member.guild.channels.cache.get(config.greeting.channel).send(`${member}`, new Discord.MessageEmbed()
        .setDescription(`${member} a rejoint le serveur. Nous sommes désormais ${member.guild.memberCount} ! 🎉`)
        .setColor('#00ff00'))
    member.roles.add(config.greeting.role)
})

client.on('guildMemberRemove', member => {
    member.guild.channels.cache.get(config.greeting.channel).send(new Discord.MessageEmbed()
        .setDescription(`${member.user.tag} a quitté le serveur... 😢`)
        .setColor('#ff0000'))
})

client.on('messageReactionAdd', (reaction, user) => {
    if (!reaction.message.guild || user.bot) return
    const reactionRoleElem = config.reactionRole[reaction.message.id]
    if (!reactionRoleElem) return
    const prop = reaction.emoji.id ? 'id' : 'name'
    const emoji = reactionRoleElem.emojis.find(emoji => emoji[prop] === reaction.emoji[prop])
    if (emoji) reaction.message.guild.member(user).roles.add(emoji.roles)
    else reaction.users.remove(user)
})

client.on('messageReactionRemove', (reaction, user) => {
    if (!reaction.message.guild || user.bot) return
    const reactionRoleElem = config.reactionRole[reaction.message.id]
    if (!reactionRoleElem || !reactionRoleElem.removable) return
    const prop = reaction.emoji.id ? 'id' : 'name'
    const emoji = reactionRoleElem.emojis.find(emoji => emoji[prop] === reaction.emoji[prop])
    if (emoji) reaction.message.guild.member(user).roles.remove(emoji.roles)
})

// config.json
{
    "token": "votre token",
    "prefix": "!",
    "greeting": {
        "channel": "718970110164992041",
        "role": "718970160647635056"
    },
    "reactionRole": {
        "721812281347932311": {
            "emojis": [{
                "id": "719563468008718348",
                "roles": "722404495371534358"
            }]
        },
        "721812680763244596": {
            "removable": true,
            "emojis": [{
                "name": "💻",
                "roles": ["722088168458813584", "722088234963828747"]
            }, {
                "name": "🎮",
                "roles": "722088255402672139"
            }]
        }
    }
}