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

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

export function capFirstLetter(str: string) {
  let arr = str.split("");
  let first = arr.shift()?.toUpperCase();
  return (first || "") + arr.join("");
}

export function timeAgo(date: Date) {
  const seconds = Math.floor((new Date().getTime() - date.getTime()) / 1000);
  let interval = Math.floor(seconds / 31536000);

  // return date.toLocaleDateString("en-US");
  if (interval > 1) {
    const formatter = new Intl.DateTimeFormat("en-US", {
      year: "numeric",
      month: "short",
      day: "numeric",
      hour: "numeric",
      minute: "numeric",
    });
    return "on " + formatter.format(date);
  }
  interval = Math.floor(seconds / 86400);
  // return date without years
  if (interval > 1) {
    const formatter = new Intl.DateTimeFormat("en-US", {
      month: "short",
      day: "numeric",
      hour: "numeric",
      minute: "numeric",
    });
    return "on " + formatter.format(date);
  }
  interval = Math.floor(seconds / 3600);
  if (interval > 1) {
    return interval + " hours ago";
  }
  interval = Math.floor(seconds / 60);
  if (interval > 1) {
    return interval + " minutes ago";
  }
  return Math.floor(seconds) + " seconds ago";
}