type ClassDictionary = Record<string, boolean | null | undefined>;
type ClassArray = ClassValue[];
type ClassValue = string | number | false | null | undefined | ClassDictionary | ClassArray;

export function cn(...values: ClassValue[]): string {
  const classes: string[] = [];

  for (const value of values) {
    if (!value) {
      continue;
    }

    if (typeof value === 'string' || typeof value === 'number') {
      classes.push(String(value));
      continue;
    }

    if (Array.isArray(value)) {
      const nested = cn(...value);
      if (nested) {
        classes.push(nested);
      }
      continue;
    }

    for (const [key, enabled] of Object.entries(value)) {
      if (enabled) {
        classes.push(key);
      }
    }
  }

  return classes.join(' ');
}

export const classNames = cn;