const crypto = require('crypto');
module.exports = {
    name:"ratelimit",
    async function(req){
        return new Promise(async (resolve,reject) => {
            // If developer key has been sent, skip ratelimiter
            if(req.headers.devkey){if(req.headers.devkey == config.ratelimit.devKey){resolve();return}}
            // If user is banned already, reject with code 3 (ignore)
            let bh = false
            await commands.get("banHandler").check(req).catch(err => {reject(3);bh=true})
            if(bh){return}

            if(!config.ratelimit.enabled){
                resolve()
                return
            }

            let hash = req.headers["cf-connecting-ip"] == undefined ? crypto.createHash('md5').update("localhost").digest('hex') : crypto.createHash('md5').update(req.headers["cf-connecting-ip"]).digest('hex')
            if(ratelimit[hash] == undefined){
                // Everything is fine
                ratelimit[hash] = [new Date().getTime()+1000,0]
                resolve()
                return
            }
            else{
                if(ratelimit[hash][0] > new Date().getTime()){
                    ratelimit[hash][1] = ratelimit[hash][1] + 1
                    if(ratelimit[hash][1] >= config.ratelimit.hitsUntilBan){
                        // User gets banned now, reject with code 2 (tell user about the ban)
                        commands.get("banHandler").ban(req)
                        reject(2)
                        console.log(`${new Date()}: Banning ${hash}`);
                        return
                    }
                    // User hits ratelimit, reject with code 1 (tell user about the hit)
                    reject(1)
                    // console.log(`Rate Limiting ${hash}`);
                    return
                }else{
                    // Everything is fine
                    ratelimit[hash][0] = new Date().getTime()+1000
                    resolve()
                    return
                }
            }
        })
    }
}