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

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

// This check can be removed, it is just for tutorial purposes
export const hasEnvVars =
  (process.env.SUPABASE_URL || process.env.NEXT_PUBLIC_SUPABASE_URL) &&
  (process.env.SUPABASE_ANON_KEY ||
    process.env.NEXT_PUBLIC_SUPABASE_PUBLISHABLE_KEY ||
    process.env.NEXT_PUBLIC_SUPABASE_ANON_KEY);

export function resolveSupabaseUrl(url: string | undefined): string | undefined {
  if (!url) return url;
  if (typeof window !== 'undefined') {
    try {
      const parsed = new URL(url);
      if (parsed.hostname === 'supabase-kong' || parsed.hostname === 'kong') {
        parsed.hostname = window.location.hostname;
        return parsed.toString().replace(/\/$/, '');
      }
    } catch {
      return url
        .replace('//supabase-kong', `//${window.location.hostname}`)
        .replace('//kong', `//${window.location.hostname}`);
    }
  }
  return url;
}