utils.ts

import { clsx, type ClassValue } from "clsx"
import { twMerge } from "tailwind-merge"

export function cn(...inputs: ClassValue[]) {
  return twMerge(clsx(inputs))
}

export function calcReadTime(text: string | undefined | null): number {
  if (!text) return 1;
  const wordCount = text.trim().split(/\s+/).filter(Boolean).length;
  return Math.max(1, Math.ceil(wordCount / 265));
}

export function formatRelativeDate(dateStr: string): string {
  const date = new Date(dateStr);
  const now = new Date();
  const diffDays = Math.floor((now.getTime() - date.getTime()) / (1000 * 60 * 60 * 24));

  if (diffDays < 0) return date.toLocaleDateString("en-US", { year: "numeric", month: "short", day: "numeric" });
  if (diffDays === 0) return "today";
  if (diffDays === 1) return "yesterday";
  if (diffDays <= 30) return `${diffDays} days ago`;
  return date.toLocaleDateString("en-US", { year: "numeric", month: "short" });
}