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

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

export function dateToLocaleString(date: string) {
  return new Date(date).toLocaleString("en-US",
    { timeZone: "Europe/Istanbul", hour12: false, year: "numeric", month: "2-digit", day: "2-digit", hour: "2-digit", minute: "2-digit", second: "2-digit" }
  );
}

export function toISOIfNotZ(val: string): string {
  if (val.endsWith("Z")) return val;
  const [d, m, yAndTime] = val.split("/");
  if (!yAndTime) return val;
  const [y, time] = yAndTime.split(" ");
  if (!time) return val;
  const [h, min, s] = time.split(":").map(Number);
  try {
    const date = new Date(Number(y), Number(m) - 1, Number(d), h, min, s);
    return date ? date.toISOString() : "";
  } catch (error) {
    console.error("Error converting date:", error);
    return val;
  }
}