/**
 * Utility Functions Example
 *
 * This file contains utility functions that demonstrate different
 * change scenarios in the diff viewer.
 */

/**
 * Format a number as currency
 */
export function formatCurrency(amount: number, currency: string = 'USD'): string {
  return new Intl.NumberFormat('en-US', {
    style: 'currency',
    currency: currency,
  }).format(amount);
}

/**
 * Truncate text with ellipsis
 */
export function truncate(text: string, maxLength: number): string {
  if (text.length <= maxLength) {
    return text;
  }
  return text.slice(0, maxLength - 3) + '...';
}

/**
 * Deep clone an object
 */
export function deepClone<T>(obj: T): T {
  return JSON.parse(JSON.stringify(obj));
}

/**
 * Debounce a function
 */
export function debounce<T extends (...args: any[]) => any>(
  fn: T,
  delay: number
): (...args: Parameters<T>) => void {
  let timeoutId: ReturnType<typeof setTimeout>;

  return function (...args: Parameters<T>) {
    clearTimeout(timeoutId);
    timeoutId = setTimeout(() => fn(...args), delay);
  };
}

/**
 * Generate a random ID
 */
export function generateId(length: number = 8): string {
  const chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
  let result = '';
  for (let i = 0; i < length; i++) {
    result += chars.charAt(Math.floor(Math.random() * chars.length));
  }
  return result;
}

/**
 * Parse a date string safely
 */
export function parseDate(dateString: string): Date | null {
  const date = new Date(dateString);
  if (isNaN(date.getTime())) {
    return null;
  }
  return date;
}