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/*
Spacebar: A FOSS re-implementation and extension of the Discord.com backend.
Copyright (C) 2023 Spacebar and Spacebar Contributors
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published
by the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
import { Snowflake } from "@spacebar/util";
import crypto from "node:crypto";
// TODO: 'random'? seriously? who named this?
// And why is this even here? Just use cryto.randomBytes?
export function randomString(length = 6) {
// Declare all characters
const chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
// Pick characers randomly
let str = "";
for (let i = 0; i < length; i++) {
str += chars.charAt(Math.floor(crypto.randomInt(chars.length)));
}
return str;
}
export function snowflakeBasedInvite() {
// Declare all characters
const chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
const base = BigInt(chars.length);
let snowflake = Snowflake.generateWorkerProcess();
// snowflakes hold ~10.75 characters worth of entropy;
// safe to generate a 8-char invite out of them
const str = "";
for (let i = 0; i < 10; i++) {
str.concat(chars.charAt(Number(snowflake % base)));
snowflake = snowflake / base;
}
return str
.slice(3, 3 + 8)
.split("")
.reverse()
.join("");
}
export function randomUpperString(length: number = 10) {
const chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
let result = "";
for (let i = 0; i < length; i++) {
result += chars.charAt(Math.floor(Math.random() * chars.length));
}
return result;
}
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