export function browserRandomUUID(): string {
  const cryptoRef = globalThis.crypto;
  if (typeof cryptoRef?.randomUUID === "function") {
    try {
      return cryptoRef.randomUUID();
    } catch {
      // Fall through to byte generation when a browser exposes but rejects it.
    }
  }

  const bytes = new Uint8Array(16);
  if (typeof cryptoRef?.getRandomValues === "function") {
    cryptoRef.getRandomValues(bytes);
  } else {
    for (let index = 0; index < bytes.length; index += 1) {
      bytes[index] = Math.floor(Math.random() * 256);
    }
  }

  bytes[6] = (bytes[6] & 0x0f) | 0x40;
  bytes[8] = (bytes[8] & 0x3f) | 0x80;

  const hex = Array.from(bytes, (byte) =>
    byte.toString(16).padStart(2, "0"),
  );
  return [
    hex.slice(0, 4).join(""),
    hex.slice(4, 6).join(""),
    hex.slice(6, 8).join(""),
    hex.slice(8, 10).join(""),
    hex.slice(10, 16).join(""),
  ].join("-");
}

export function browserRandomId(prefix: string): string {
  return `${prefix}-${browserRandomUUID()}`;
}
