export type ClassValue = string | number | boolean | undefined | null | { [key: string]: boolean | undefined | null } | ClassValue[];

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

  function process(input: ClassValue) {
    if (!input) return;
    if (typeof input === "string" || typeof input === "number") {
      classes.push(String(input));
    } else if (Array.isArray(input)) {
      input.forEach(process);
    } else if (typeof input === "object") {
      Object.entries(input).forEach(([key, value]) => {
        if (value) classes.push(key);
      });
    }
  }

  inputs.forEach(process);
  return classes.join(" ");
}

export function formatCurrency(amount: number): string {
  return new Intl.NumberFormat("en-IN", {
    style: "currency",
    currency: "INR",
    maximumFractionDigits: 0,
  }).format(amount);
}

export function formatDate(dateString: string): string {
  if (!dateString) return "-";
  const date = new Date(dateString);
  if (isNaN(date.getTime())) return dateString;
  return new Intl.DateTimeFormat("en-IN", {
    day: "numeric",
    month: "short",
    year: "numeric",
  }).format(date);
}