/**
 * Generates a random unique ID (UUID v4 style)
 */
export function generateId(): string {
  return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, (c) => {
    const r = (Math.random() * 16) | 0;
    const v = c === 'x' ? r : (r & 0x3) | 0x8;
    return v.toString(16);
  });
}

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

/**
 * Safely get a nested value by dot-path e.g. "user.email"
 */
export function getNestedValue(obj: Record<string, any>, path: string): any {
  return path.split('.').reduce((acc, key) => acc?.[key], obj);
}

/**
 * Set a nested value by dot-path e.g. "user.email"
 */
export function setNestedValue(
  obj: Record<string, any>,
  path: string,
  value: any
): void {
  const keys = path.split('.');
  const last = keys.pop()!;
  const target = keys.reduce((acc, key) => {
    if (!acc[key]) acc[key] = {};
    return acc[key];
  }, obj);
  target[last] = value;
}