Haha-Yes/utils/ratelimiter.js

97 lines
No EOL
3.2 KiB
JavaScript

const ratelimit = {};
const parallelLimit = {};
const { ownerId } = process.env;
import db from '../models/index.js';
export default {
check,
addParallel,
removeParallel,
checkParallel,
};
function check(user, commandName, commands) {
const userID = user.id;
const userTag = user.username;
// Don't apply the rate limit to bot owner
if (userID === ownerId) {
return false;
}
if (!ratelimit[userID]) {
ratelimit[userID] = {};
}
const date = new Date();
if (ratelimit[userID][commandName]) {
if (ratelimit[userID][commandName].cooldown && ratelimit[userID][commandName].limit === commands.ratelimit) {
if (date > ratelimit[userID][commandName].cooldown) {
ratelimit[userID][commandName].limit = 0;
ratelimit[userID][commandName].cooldown = undefined;
}
}
if (commands.ratelimit === ratelimit[userID][commandName].limit) {
const seconds = Math.floor((ratelimit[userID][commandName].cooldown - date) / 1000);
const minutes = Math.floor(seconds / 60);
const hours = Math.floor(minutes / 60);
const dateString = `${hours > 0 ? ` ${Math.floor(hours)} hours` : ''}${minutes > 0 ? ` ${Math.floor(minutes % 60)} minutes` : ''}${seconds > 0 ? ` ${Math.floor(seconds % 60)} seconds` : ''}`;
const isOptOut = db.optout.findOne({ where: { userID: userID } });
if (isOptOut) {
console.log(`A user is rate limited on \x1b[33m${commandName}\x1b[0m for${dateString}.`);
}
else {
console.log(`\x1b[33m${userTag} (${userID})\x1b[0m is rate limited on \x1b[33m${commandName}\x1b[0m for${dateString}.`);
}
return `You are being rate limited. You can try again in${dateString}.`;
}
}
if (commands.ratelimit) {
date.setSeconds(date.getSeconds() + commands.cooldown);
ratelimit[userID][commandName] = { limit: ratelimit[userID][commandName] ? ratelimit[userID][commandName].limit + 1 : 1, cooldown: date };
}
return false;
}
function addParallel(commandName) {
console.log(`[ADD] Adding parallel to ${commandName}`);
if (!parallelLimit[commandName]) parallelLimit[commandName] = 0;
const prevNumber = parallelLimit[commandName];
console.log(`[ADD] Previous parallel executions: ${prevNumber}`);
console.log(`[ADD] Current parallel executions: ${JSON.stringify(parallelLimit)}`);
parallelLimit[commandName] = prevNumber + 1;
}
function removeParallel(commandName) {
console.log(`[REMOVE] Removing parallel to ${commandName}`);
// This shouldn't be possible
if (!parallelLimit[commandName]) parallelLimit[commandName] = 0;
const prevNumber = parallelLimit[commandName];
console.log(`[REMOVE] previous number: ${prevNumber}`);
console.log(`[REMOVE] previous parallel limit: ${JSON.stringify(parallelLimit)}`);
parallelLimit[commandName] = prevNumber - 1;
console.log(`[REMOVE] current parallel limit: ${JSON.stringify(parallelLimit)}`);
}
function checkParallel(user, commandName, command) {
// Don't apply the rate limit to bot owner
// if (user.id === ownerId) return false;
console.log(`[CHECK] command limit: ${command.parallelLimit}`);
console.log(`[CHECK] current parallel executions: ${parallelLimit[commandName]}`);
if (parallelLimit[commandName] >= command.parallelLimit) {
return 'There are currently too many parallel execution of this command, please wait before retrying.';
}
return false;
}