import { Snowflake } from "@fosscord/util";

export function random(length = 6) {
	// Declare all characters
	let chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";

	// Pick characers randomly
	let str = "";
	for (let i = 0; i < length; i++) {
		str += chars.charAt(Math.floor(Math.random() * chars.length));
	}

	return str;
}

export function snowflakeBasedInvite() {
	// Declare all characters
	let chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
	
	let snowflake = Snowflake.generateWorkerProcess();
	
	// snowflakes hold ~10.75 characters worth of entropy;
	// safe to generate a 8-char invite out of them
	let str = "";
	for (let i=0; i < 10; i++) {
		str += chars.charAt((snowflake % chars.length));
		snowflake /= chars.length;
	}
	
	return str.substr(3,8).reverse(); // little-endianise for entropy
}