import { Language } from './types';

export function formatConversationalTime(date: Date): string {
  const now = new Date();
  const diff = now.getTime() - date.getTime();
  const minutes = Math.floor(diff / 60000);
  const hours = Math.floor(diff / 3600000);
  const days = Math.floor(diff / 86400000);

  if (minutes < 1) return 'just now';
  if (minutes < 60) return `${minutes}m ago`;
  if (hours < 6) return `${hours}h ago`;
  if (days === 0) return 'today';
  if (days === 1) return 'yesterday';
  if (days < 7) return `${days} days ago`;

  return new Intl.DateTimeFormat('en-US', {
    month: 'short',
    day: 'numeric',
    hour: 'numeric',
    minute: '2-digit'
  }).format(date);
}

export function detectLanguage(text: string): Language {
  // Simple heuristic: check for common Spanish words
  const spanishCommon = /\b(el|la|los|las|en|y|que|es|por|para|con|un|una)\b/i;
  return spanishCommon.test(text) ? Language.ES : Language.EN;
}

export function generateId(): string {
  return Math.random().toString(36).substring(2, 15) + Math.random().toString(36).substring(2, 15);
}