const fs = require("node:fs")
const path = require("node:path")
const crypto = require("node:crypto")
const logger = require("../modules/logger")
require("colors")

function initKeys() {
    if (!isExists("private.pem") && isExists("public.pem")) {
        logger.log(`[${"RSA Keys".blue}] Public key is missing.`)
        fs.unlinkSync("public.pem")
    }
    if (!isExists("public.pem") && isExists("private.pem")) {
        logger.log(`[${"RSA Keys".blue}] Private key is missing`)
        fs.unlinkSync("private.pem")
    }
    if (!isExists("private.pem") && !isExists("public.pem")) {
        logger.log(`[${"RSA Keys".blue}] RSA Keys are missings, generating`)
        const { privateKey, publicKey } = crypto.generateKeyPairSync("rsa", {
            modulusLength: 2048
        })
        fs.writeFileSync(path.join(__dirname, "..", "keys", "private.pem"), privateKey.export({ type: "pkcs1", format: "pem" }))
        fs.writeFileSync(path.join(__dirname, "..", "keys", "public.pem"), publicKey.export({ type: "spki", format: "pem" }))
        logger.log(`[${"RSA Keys".blue}] RSA Keys generated`)
    }
}

function isExists(filename) {
    return fs.existsSync(path.join(__dirname, "keys", filename))
}

module.exports = {
    initKeys
}