import { nanoid } from 'nanoid';
import { nanoidDictionary } from 'nanoid-dictionary';

export function generateId(length = 21): string {
  return nanoid(length);
}

export function generateVerificationCode(): string {
  const dictionary = 'ABCDEFGHJKLMNPQRSTUVWXYZ23456789'; // Remove confusing chars: I, O, 0, 1
  let code = '';
  for (let i = 0; i < 6; i++) {
    code += dictionary[Math.floor(Math.random() * dictionary.length)];
  }
  return code;
}

export function generateSecureToken(length = 32): string {
  return nanoid(length);
}

export function slugify(text: string): string {
  return text
    .toLowerCase()
    .trim()
    .replace(/[^\w\s-]/g, '')
    .replace(/[\s_-]+/g, '-')
    .replace(/^-+|-+$/g, '');
}

export function generateChannelSlug(name: string): string {
  const base = slugify(name);
  const suffix = nanoid(6).toLowerCase();
  return `${base}-${suffix}`;
}