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