import bs58 from 'bs58';

const hex: string[] = [];

for (var i = 0; i < 256; i++) {
    hex[i] = (i < 16 ? '0' : '') + (i).toString(16);
}

export function uuidV4(): string {
    const r = crypto.getRandomValues(new Uint8Array(16));

    r[6] = r[6] & 0x0f | 0x40;
    r[8] = r[8] & 0x3f | 0x80;

    return (
        hex[r[0]] +
        hex[r[1]] +
        hex[r[2]] +
        hex[r[3]] +
        "-" +
        hex[r[4]] +
        hex[r[5]] +
        "-" +
        hex[r[6]] +
        hex[r[7]] +
        "-" +
        hex[r[8]] +
        hex[r[9]] +
        "-" +
        hex[r[10]] +
        hex[r[11]] +
        hex[r[12]] +
        hex[r[13]] +
        hex[r[14]] +
        hex[r[15]]
    );
}

export function toUTF8Bytes(str: string): number[] {
    var utf8 = unescape(encodeURIComponent(str));

    var arr: number[] = [];
    for (var i = 0; i < utf8.length; i++) {
        arr.push(utf8.charCodeAt(i));
    }

    return arr
}

export function base58UUID(): string {
    const uuid = uuidV4();
    return bs58.encode(toUTF8Bytes(uuid));
}