How can i add role when member has 10 invites? - discord

Question

im making discord bot with discord.js v12 and im trying to give role when member has 10 invites
i found invitation code from here and modified it:
if(message.channel.type != "dm" && message.channel.id === '768475421953915093') {
message.delete();
var user = message.author;
message.guild.fetchInvites()
.then
(invites =>
{
const userInvites = invites.array().filter(o => o.inviter.id === user.id);
var userInviteCount = 0;
for(var i=0; i < userInvites.length; i++)
{
var invite = userInvites[i];
userInviteCount += invite['uses'];
}
if(userInviteCount >= 10){
const guildMember = message.member;
guildMember.addRole('767542365812886656');
message.author.send(`you have access now`)
}else {
message.author.send(`sry u have ${userInviteCount} invitations. u need at least five`)
}
}
)
}
yes, it works but you can trick the system easily. If you keep rejoining from the server, the invite counter increases. How can i stop that?

Answer 1

To do this, you will need an external database since Discord API doesn't provide any information about who used that invite and how many times.
ALERT: It's a simple feature but can be very hard for people that don't have any coding experience, so if it's your first project, don't give up and keep trying! :D
You can use MongoDB Atlas, which is very simples and free.
And the logic will be very simple:
1 - Create a collection to store the invites data, you can do something like in this example
2 - Create a collection (you can give any name, but in this example, I will refer to this collection as new_members) to store the new members data, it should have the fields serverId (to store the guild ID), userId (to store the user ID) and inviteCode (to store the invite code or url)
3 - When a user joins the discord server, it will trigger the "guildMemberAdd" event, and you will get the invite that was used (with the example that I give in the first step), and create a new doc in the new_members collection.
4 - After creating this new data, you will search for all the docs from the same invite, and filter them by userId (there are many ways to do this, this is one of them).
5 - With this array of docs, you can use his length to determine how many people were invited, and give the role.
VERY SIMPLE EXAMPLE, THAT SHOULDN'T BE USED:
DiscordClient.on("guildMemberAdd", async (member) => {
/**
* https://github.com/AnIdiotsGuide/discordjs-bot-guide/blob/master/coding-guides/tracking-used-invites.md
* Here you will get the invite that was used, and store in the "inviteCode" variable
*/
const inviteCode = await getInviteUsed()
await NewMemberRepository.insert({
serverId: member.guild.id,
userId: member.id,
inviteCode: inviteCode
});
const joinedMembersFromTheInvite = await NewMemberRepository.find({
inviteCode: inviteCode
});
/**
* https://stackoverflow.com/questions/43374112/filter-unique-values-from-an-array-of-objects
* Here you will filter the results by userId
*/
const invitesWithUniqueUsers = filterJoinedMembersByUserId(joinedMembers)
if (invitesWithUniqueUsers >= REQUIRED_INVITES_QTD) {
/**
* Gives the role to the creator of the invite
*/
}
});
Hope it helps, good luck! :D
OBS:
Yes, Discord API provides how many times an invite was used, but not how many a specific person used this invite.
In the examples, I used something like TypeORM, but if you are using JavaScript instead TypeScript, you can use Mongoose